Ukiah weather in April
In April, Ukiah sees average daytime highs of 63°F and overnight lows near 42°F, with 3.1 in of precipitation across 8.3 wet days and about 13 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.
Highs climb over the month, from about 61°F in the first days to 67°F by the end. The sky is clear or mostly clear about 38% of the time in April, and the air most often feels dry.
Daylight stretches from about 12 h 24 min at the start of April to 13 h 36 min by month's end. Set against the rest of the year, April is Ukiah's 7th-clearest and 2nd-windiest month. For the whole year in context, see Ukiah's year-round climate.
- Daytime high
- 63°
- 7th warmest
- Overnight low
- 42°
- 6th coldest
- Precipitation
- 3.1 in
- 8.3 wet days
- Daylight
- 13 hours
- 5:42 AM – 6:44 PM
- Cloud cover
- 52%
- 7th clearest
- Wind
- 5 mph
- 2nd windiest
- Solar energy
- 5.91 kWh/m²
- Travel score
- 5.9
- out of 10
Ukiah is city in and county seat of Mendocino County, California, United States.
- Density
- 1,301/km²
- people per km²
- Founded
- 1876
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in April
Highs climb over the month, from about 61°F in the first days to 67°F by the end.
A typical April day in Ukiah reaches about 63°F in the afternoon and slips back to 42°F overnight — a 21°F spread between the day's warmth and the night's chill. On most days the high lands between 51°F and 76°F. Set against its neighbours, April runs about 4°F warmer than March and about 7°F cooler than May.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 60 | 61 | 61 | 61 | 61 | 61 | 61 | 61 | 61 | 62 | 62 | 62 | 62 | 62 | 63 | 63 | 63 | 64 | 64 | 64 | 64 | 65 | 65 | 65 | 66 | 66 | 66 | 67 | 67 | 67 |
| Avg low (°F) | 40 | 40 | 40 | 40 | 40 | 40 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 42 | 42 | 42 | 42 | 42 | 42 | 43 | 43 | 43 | 43 | 44 | 44 | 44 | 44 | 44 | 45 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 60 | 40 |
| 2 | 61 | 40 |
| 3 | 61 | 40 |
| 4 | 61 | 40 |
| 5 | 61 | 40 |
| 6 | 61 | 40 |
| 7 | 61 | 41 |
| 8 | 61 | 41 |
| 9 | 61 | 41 |
| 10 | 62 | 41 |
| 11 | 62 | 41 |
| 12 | 62 | 41 |
| 13 | 62 | 41 |
| 14 | 62 | 41 |
| 15 | 63 | 42 |
| 16 | 63 | 42 |
| 17 | 63 | 42 |
| 18 | 64 | 42 |
| 19 | 64 | 42 |
| 20 | 64 | 42 |
| 21 | 64 | 43 |
| 22 | 65 | 43 |
| 23 | 65 | 43 |
| 24 | 65 | 43 |
| 25 | 66 | 44 |
| 26 | 66 | 44 |
| 27 | 66 | 44 |
| 28 | 67 | 44 |
| 29 | 67 | 44 |
| 30 | 67 | 45 |
How April really feels in Ukiah
Once humidity and wind are folded in, April averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
April sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Ukiah weather by month
How April compares with the rest of the year at a glance. April is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 54° / 37° | 7.2 | 12.4 | 1.9 | 9.6 | 3.0 |
| Feb | 56° / 38° | 6.7 | 10.8 | 2.3 | 10.5 | 3.6 |
| Mar | 59° / 40° | 6.0 | 11.8 | 2 | 11.7 | 4.5 |
| Apr | 63° / 42° | 3.1 | 8.3 | 0.5 | 13 | 5.9 |
| May | 70° / 47° | 1.9 | 5.4 | 0 | 14.1 | 7.5 |
| Jun | 78° / 53° | 0.6 | 2.2 | 0 | 14.7 | 8.6 |
| Jul | 85° / 57° | 0.0 | 0.3 | 0 | 14.5 | 7.1 |
| Aug | 85° / 57° | 0.1 | 0.4 | 0 | 13.5 | 7.2 |
| Sep | 82° / 54° | 0.3 | 1.4 | 0 | 12.3 | 8.3 |
| Oct | 73° / 47° | 2.2 | 4.6 | 0 | 11 | 8.1 |
| Nov | 60° / 40° | 4.3 | 8.5 | 0.3 | 9.9 | 5.0 |
| Dec | 53° / 36° | 7.8 | 12.2 | 1.3 | 9.3 | 2.9 |
Cloud cover in April
The sky is clear or mostly clear about 38% of the time in April.
Beyond those clear spells, partly cloudy skies cover about 15% of April, with mostly cloudy or overcast conditions the remaining 47%. Skies tend to open up as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 48 | 50 | 50 | 51 | 51 | 51 | 51 | 52 | 52 | 52 | 52 | 52 | 52 | 52 | 52 | 53 | 53 | 53 | 54 | 54 | 55 | 55 | 55 | 55 | 56 | 56 | 57 | 58 | 59 | 59 |
| Cloudier (%) | 52 | 50 | 50 | 49 | 49 | 49 | 49 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 47 | 47 | 47 | 46 | 46 | 45 | 45 | 45 | 45 | 44 | 44 | 43 | 42 | 41 | 41 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 48 | 52 |
| 2 | 50 | 50 |
| 3 | 50 | 50 |
| 4 | 51 | 49 |
| 5 | 51 | 49 |
| 6 | 51 | 49 |
| 7 | 51 | 49 |
| 8 | 52 | 48 |
| 9 | 52 | 48 |
| 10 | 52 | 48 |
| 11 | 52 | 48 |
| 12 | 52 | 48 |
| 13 | 52 | 48 |
| 14 | 52 | 48 |
| 15 | 52 | 48 |
| 16 | 53 | 47 |
| 17 | 53 | 47 |
| 18 | 53 | 47 |
| 19 | 54 | 46 |
| 20 | 54 | 46 |
| 21 | 55 | 45 |
| 22 | 55 | 45 |
| 23 | 55 | 45 |
| 24 | 55 | 45 |
| 25 | 56 | 44 |
| 26 | 56 | 44 |
| 27 | 57 | 43 |
| 28 | 58 | 42 |
| 29 | 59 | 41 |
| 30 | 59 | 41 |
Chance of precipitation in April
Ukiah gets around 3.1 in of rain and snow over 8.3 wet days in April. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 28% and peaks near 32% on the wettest days, and about 1 day brings snow. The odds ease toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 32 | 32 | 31 | 31 | 31 | 31 | 31 | 32 | 32 | 32 | 32 | 32 | 32 | 31 | 31 | 30 | 29 | 29 | 28 | 27 | 26 | 26 | 25 | 24 | 23 | 23 | 22 | 22 | 21 | 21 |
| Snow chance (%) | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 32 | 5 |
| 2 | 32 | 5 |
| 3 | 31 | 5 |
| 4 | 31 | 4 |
| 5 | 31 | 4 |
| 6 | 31 | 4 |
| 7 | 31 | 4 |
| 8 | 32 | 3 |
| 9 | 32 | 3 |
| 10 | 32 | 3 |
| 11 | 32 | 3 |
| 12 | 32 | 3 |
| 13 | 32 | 2 |
| 14 | 31 | 2 |
| 15 | 31 | 2 |
| 16 | 30 | 2 |
| 17 | 29 | 2 |
| 18 | 29 | 1 |
| 19 | 28 | 1 |
| 20 | 27 | 1 |
| 21 | 26 | 1 |
| 22 | 26 | 1 |
| 23 | 25 | 1 |
| 24 | 24 | 1 |
| 25 | 23 | 0 |
| 26 | 23 | 0 |
| 27 | 22 | 0 |
| 28 | 22 | 0 |
| 29 | 21 | 0 |
| 30 | 21 | 0 |
Humidity in April
Most of April feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, April lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Dry (%) | |
|---|---|
| 1 | 100 |
| 2 | 100 |
| 3 | 100 |
| 4 | 100 |
| 5 | 100 |
| 6 | 100 |
| 7 | 100 |
| 8 | 100 |
| 9 | 100 |
| 10 | 100 |
| 11 | 100 |
| 12 | 100 |
| 13 | 100 |
| 14 | 100 |
| 15 | 100 |
| 16 | 100 |
| 17 | 100 |
| 18 | 100 |
| 19 | 100 |
| 20 | 100 |
| 21 | 100 |
| 22 | 100 |
| 23 | 100 |
| 24 | 100 |
| 25 | 100 |
| 26 | 100 |
| 27 | 100 |
| 28 | 100 |
| 29 | 100 |
| 30 | 100 |
Wind in April
Winds average 5 mph in April.
Across April, daily wind ranges from about 5 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 5 | calm |
| 2 | 5 | calm |
| 3 | 5 | calm |
| 4 | 5 | calm |
| 5 | 5 | calm |
| 6 | 5 | calm |
| 7 | 5 | calm |
| 8 | 5 | calm |
| 9 | 5 | calm |
| 10 | 5 | calm |
| 11 | 5 | calm |
| 12 | 5 | calm |
| 13 | 5 | calm |
| 14 | 5 | calm |
| 15 | 5 | calm |
| 16 | 5 | calm |
| 17 | 5 | calm |
| 18 | 5 | calm |
| 19 | 5 | calm |
| 20 | 5 | calm |
| 21 | 5 | calm |
| 22 | 5 | calm |
| 23 | 5 | calm |
| 24 | 5 | calm |
| 25 | 5 | calm |
| 26 | 5 | calm |
| 27 | 5 | calm |
| 28 | 5 | calm |
| 29 | 5 | calm |
| 30 | 5 | calm |
Sunrise & sunset in April
Daylight runs from about 12 h 24 min at the start of April to 13 h 36 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 72 minutes over April. Sunrise moves from 6:06 AM to 5:23 AM, and sunset from 6:29 PM to 6:58 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.4 | 12.4 | 12.5 | 12.5 | 12.6 | 12.6 | 12.6 | 12.7 | 12.7 | 12.8 | 12.8 | 12.9 | 12.9 | 12.9 | 13.0 | 13.0 | 13.1 | 13.1 | 13.1 | 13.2 | 13.2 | 13.3 | 13.3 | 13.3 | 13.4 | 13.4 | 13.5 | 13.5 | 13.5 | 13.6 |
| Sunrise (AM) | 6:06 | 6:04 | 6:03 | 6:01 | 6:00 | 5:58 | 5:56 | 5:55 | 5:53 | 5:52 | 5:50 | 5:48 | 5:47 | 5:45 | 5:44 | 5:42 | 5:41 | 5:39 | 5:38 | 5:36 | 5:35 | 5:34 | 5:32 | 5:31 | 5:29 | 5:28 | 5:27 | 5:25 | 5:24 | 5:23 |
| Sunset (PM) | 6:29 | 6:30 | 6:31 | 6:32 | 6:33 | 6:34 | 6:35 | 6:36 | 6:37 | 6:38 | 6:39 | 6:40 | 6:41 | 6:42 | 6:43 | 6:44 | 6:45 | 6:46 | 6:47 | 6:48 | 6:49 | 6:50 | 6:51 | 6:52 | 6:53 | 6:54 | 6:55 | 6:56 | 6:57 | 6:58 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.4 | 6:06 | 6:29 |
| 2 | 12.4 | 6:04 | 6:30 |
| 3 | 12.5 | 6:03 | 6:31 |
| 4 | 12.5 | 6:01 | 6:32 |
| 5 | 12.6 | 6:00 | 6:33 |
| 6 | 12.6 | 5:58 | 6:34 |
| 7 | 12.6 | 5:56 | 6:35 |
| 8 | 12.7 | 5:55 | 6:36 |
| 9 | 12.7 | 5:53 | 6:37 |
| 10 | 12.8 | 5:52 | 6:38 |
| 11 | 12.8 | 5:50 | 6:39 |
| 12 | 12.9 | 5:48 | 6:40 |
| 13 | 12.9 | 5:47 | 6:41 |
| 14 | 12.9 | 5:45 | 6:42 |
| 15 | 13.0 | 5:44 | 6:43 |
| 16 | 13.0 | 5:42 | 6:44 |
| 17 | 13.1 | 5:41 | 6:45 |
| 18 | 13.1 | 5:39 | 6:46 |
| 19 | 13.1 | 5:38 | 6:47 |
| 20 | 13.2 | 5:36 | 6:48 |
| 21 | 13.2 | 5:35 | 6:49 |
| 22 | 13.3 | 5:34 | 6:50 |
| 23 | 13.3 | 5:32 | 6:51 |
| 24 | 13.3 | 5:31 | 6:52 |
| 25 | 13.4 | 5:29 | 6:53 |
| 26 | 13.4 | 5:28 | 6:54 |
| 27 | 13.5 | 5:27 | 6:55 |
| 28 | 13.5 | 5:25 | 6:56 |
| 29 | 13.5 | 5:24 | 6:57 |
| 30 | 13.6 | 5:23 | 6:58 |
Solar energy in April
Average shortwave solar energy reaching the ground each day in April, about 5.91 kWh/m².
For context, solar energy here swings from a low near 1.92 kWh/m² to a high of 8.22 kWh/m² in July across the year — April's 5.91 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.2 | 5.2 | 5.3 | 5.3 | 5.4 | 5.4 | 5.5 | 5.5 | 5.5 | 5.6 | 5.7 | 5.7 | 5.7 | 5.8 | 5.8 | 5.9 | 5.9 | 6.0 | 6.0 | 6.1 | 6.2 | 6.2 | 6.3 | 6.3 | 6.4 | 6.4 | 6.5 | 6.5 | 6.6 | 6.6 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.2 | Bright |
| 2 | 5.2 | Bright |
| 3 | 5.3 | Bright |
| 4 | 5.3 | Bright |
| 5 | 5.4 | Bright |
| 6 | 5.4 | Bright |
| 7 | 5.5 | Bright |
| 8 | 5.5 | Bright |
| 9 | 5.5 | Bright |
| 10 | 5.6 | Bright |
| 11 | 5.7 | Bright |
| 12 | 5.7 | Bright |
| 13 | 5.7 | Bright |
| 14 | 5.8 | Bright |
| 15 | 5.8 | Bright |
| 16 | 5.9 | Bright |
| 17 | 5.9 | Bright |
| 18 | 6.0 | Bright |
| 19 | 6.0 | Intense |
| 20 | 6.1 | Intense |
| 21 | 6.2 | Intense |
| 22 | 6.2 | Intense |
| 23 | 6.3 | Intense |
| 24 | 6.3 | Intense |
| 25 | 6.4 | Intense |
| 26 | 6.4 | Intense |
| 27 | 6.5 | Intense |
| 28 | 6.5 | Intense |
| 29 | 6.6 | Intense |
| 30 | 6.6 | Intense |
Hazard calendar for Ukiah
None of Ukiah's seasonal hazards are active in April. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Ukiah's rainy season runs November–March, when most of the year's rain falls.
Is April a good time to visit Ukiah?
Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
April is a reasonable time to visit Ukiah for sightseeing.
What to pack for Ukiah in April
From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In April, Ukiah sees daytime highs around 63°F and nights near 42°F. Worth packing: a warm layer, rain gear and sun protection. About 8 days see rain.
Sea temperature near Ukiah in April
The nearest coast averages about 52°F in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 29 mi away) is warmest in September at about 55°F and coldest in April near 52°F.
The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 53 | 53 | 53 | 52 | 52 | 52 | 53 | 54 | 55 | 55 | 55 | 54 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 53 | Bracing |
| Feb | 53 | Bracing |
| Mar | 53 | Bracing |
| Apr | 52 | Bracing |
| May | 52 | Bracing |
| Jun | 52 | Bracing |
| Jul | 53 | Bracing |
| Aug | 54 | Bracing |
| Sep | 55 | Bracing |
| Oct | 55 | Bracing |
| Nov | 55 | Bracing |
| Dec | 54 | Bracing |
UV index in Ukiah in April
Clear-sky midday UV in April peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Ukiah peaks around July 10 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 6 | 9 | 10 | 10 | 9 | 6 | 5 | 2 | 2 |
| Level | Moderate | Moderate | Moderate | High | Very high | Very high | Extreme | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 6 | High |
| May | 9 | Very high |
| Jun | 10 | Very high |
| Jul | 10 | Extreme |
| Aug | 9 | Very high |
| Sep | 6 | High |
| Oct | 5 | Moderate |
| Nov | 2 | Moderate |
| Dec | 2 | Low |
Air quality in Ukiah in April
Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.
Air quality in Ukiah is worst in September — around 31 µg/m³ PM2.5 (moderate), about 5.8× the cleanest month (June, 5 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 6 | 8 | 9 | 8 | 6 | 5 | 14 | 29 | 31 | 14 | 8 | 6 |
| Level | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 6 | Good |
| Feb | 8 | Good |
| Mar | 9 | Good |
| Apr | 8 | Good |
| May | 6 | Good |
| Jun | 5 | Good |
| Jul | 14 | Moderate |
| Aug | 29 | Moderate |
| Sep | 31 | Moderate |
| Oct | 14 | Moderate |
| Nov | 8 | Good |
| Dec | 6 | Good |
Where is Ukiah?
Ukiah sits at 39.2°N, 123.2°W, 633 ft above sea level, in United States. The nearest listed city is Clearlake, 34 mi away.
Topography around Ukiah
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Ukiah.
Within 2 miles, the terrain around Ukiah has significant variations in elevation — a maximum elevation change of 1,765 ft around an average of 827 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,415 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,362 ft.
The land around Ukiah is covered by trees (51%), artificial surfaces (25%) and grassland (20%) within 2 miles, trees (72%) and grassland (24%) within 10 miles, and trees (59%) and water (21%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Ukiah (39.1502°, -123.2078°, elevation 633 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).