Walla Walla weather in May
In May, Walla Walla sees average daytime highs of 66°F and overnight lows near 45°F, with 2.1 in of precipitation across 9.7 wet days and about 14.7 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.
Highs climb over the month, from about 63°F in the first days to 70°F by the end. The sky is clear or mostly clear about 32% of the time in May, and the air most often feels dry.
Daylight stretches from about 14 h 06 min at the start of May to 15 h 18 min by month's end. Set against the rest of the year, May is Walla Walla's 6th-clearest and 7th-windiest month. For the whole year in context, see Walla Walla's year-round climate.
- Daytime high
- 66°
- 5th warmest
- Overnight low
- 45°
- 8th coldest
- Precipitation
- 2.1 in
- 9.7 wet days
- Daylight
- 14 h 42 min
- 4:27 AM – 7:12 PM
- Cloud cover
- 57%
- 6th clearest
- Wind
- 6 mph
- 7th windiest
- Solar energy
- 6.55 kWh/m²
- Travel score
- 6.2
- out of 10
Walla Walla is city in Walla Walla County, Washington, United States.
- Density
- 970/km²
- people per km²
- Founded
- 1856
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in May
Highs climb over the month, from about 63°F in the first days to 70°F by the end.
A typical May day in Walla Walla reaches about 66°F in the afternoon and slips back to 45°F overnight — a 22°F spread between the day's warmth and the night's chill. On most days the high lands between 55°F and 80°F. Set against its neighbours, May runs about 9°F warmer than April and about 7°F cooler than June.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 62 | 63 | 63 | 63 | 64 | 64 | 64 | 64 | 65 | 65 | 65 | 66 | 66 | 66 | 66 | 67 | 67 | 67 | 67 | 67 | 68 | 68 | 68 | 68 | 69 | 69 | 69 | 69 | 70 | 70 | 70 |
| Avg low (°F) | 41 | 41 | 41 | 42 | 42 | 42 | 42 | 43 | 43 | 43 | 44 | 44 | 44 | 44 | 45 | 45 | 45 | 46 | 46 | 46 | 46 | 46 | 47 | 47 | 47 | 47 | 47 | 47 | 48 | 48 | 48 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 62 | 41 |
| 2 | 63 | 41 |
| 3 | 63 | 41 |
| 4 | 63 | 42 |
| 5 | 64 | 42 |
| 6 | 64 | 42 |
| 7 | 64 | 42 |
| 8 | 64 | 43 |
| 9 | 65 | 43 |
| 10 | 65 | 43 |
| 11 | 65 | 44 |
| 12 | 66 | 44 |
| 13 | 66 | 44 |
| 14 | 66 | 44 |
| 15 | 66 | 45 |
| 16 | 67 | 45 |
| 17 | 67 | 45 |
| 18 | 67 | 46 |
| 19 | 67 | 46 |
| 20 | 67 | 46 |
| 21 | 68 | 46 |
| 22 | 68 | 46 |
| 23 | 68 | 47 |
| 24 | 68 | 47 |
| 25 | 69 | 47 |
| 26 | 69 | 47 |
| 27 | 69 | 47 |
| 28 | 69 | 47 |
| 29 | 70 | 48 |
| 30 | 70 | 48 |
| 31 | 70 | 48 |
How May really feels in Walla Walla
Once humidity and wind are folded in, May 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.
May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Walla Walla weather by month
How May compares with the rest of the year at a glance. May is the 5th-warmest and 7th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 39° / 29° | 3.3 | 14.2 | 8.6 | 8.9 | 0.0 |
| Feb | 44° / 30° | 2.6 | 12 | 6.3 | 10 | 0.6 |
| Mar | 50° / 34° | 2.9 | 13.4 | 5 | 11.6 | 2.2 |
| Apr | 58° / 38° | 2.2 | 11.5 | 1.7 | 13.3 | 4.0 |
| May | 66° / 45° | 2.1 | 9.7 | 0.2 | 14.7 | 6.2 |
| Jun | 74° / 50° | 1.3 | 6.3 | 0 | 15.5 | 7.5 |
| Jul | 84° / 57° | 0.3 | 2 | 0 | 15.2 | 7.3 |
| Aug | 83° / 56° | 0.4 | 2.1 | 0 | 14 | 7.5 |
| Sep | 73° / 49° | 0.8 | 4.1 | 0 | 12.3 | 8.1 |
| Oct | 60° / 40° | 2.1 | 8.8 | 0.3 | 10.7 | 5.0 |
| Nov | 46° / 33° | 3.3 | 13.6 | 5.1 | 9.2 | 1.1 |
| Dec | 38° / 28° | 3.6 | 14.3 | 9.2 | 8.5 | 0.0 |
Cloud cover in May
The sky is clear or mostly clear about 32% of the time in May.
Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 51%.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 53 | 53 | 53 | 53 | 53 | 52 | 52 | 51 | 50 | 50 | 48 | 48 | 48 | 47 | 46 | 45 | 45 | 45 | 46 | 46 | 47 | 47 | 48 | 49 | 50 | 50 | 51 | 51 | 52 | 53 | 53 |
| Cloudier (%) | 47 | 47 | 47 | 47 | 47 | 48 | 48 | 49 | 50 | 50 | 52 | 52 | 52 | 53 | 54 | 55 | 55 | 55 | 54 | 54 | 53 | 53 | 52 | 51 | 50 | 50 | 49 | 49 | 48 | 47 | 47 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 53 | 47 |
| 2 | 53 | 47 |
| 3 | 53 | 47 |
| 4 | 53 | 47 |
| 5 | 53 | 47 |
| 6 | 52 | 48 |
| 7 | 52 | 48 |
| 8 | 51 | 49 |
| 9 | 50 | 50 |
| 10 | 50 | 50 |
| 11 | 48 | 52 |
| 12 | 48 | 52 |
| 13 | 48 | 52 |
| 14 | 47 | 53 |
| 15 | 46 | 54 |
| 16 | 45 | 55 |
| 17 | 45 | 55 |
| 18 | 45 | 55 |
| 19 | 46 | 54 |
| 20 | 46 | 54 |
| 21 | 47 | 53 |
| 22 | 47 | 53 |
| 23 | 48 | 52 |
| 24 | 49 | 51 |
| 25 | 50 | 50 |
| 26 | 50 | 50 |
| 27 | 51 | 49 |
| 28 | 51 | 49 |
| 29 | 52 | 48 |
| 30 | 53 | 47 |
| 31 | 53 | 47 |
Chance of precipitation in May
Walla Walla gets around 2.1 in of rain and snow over 9.7 wet days in May. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 31% and peaks near 34% on the wettest days, and about 0 day brings snow.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 30 | 30 | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 32 | 32 | 33 | 33 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 33 | 32 | 32 | 31 | 30 | 29 | 29 | 28 | 27 | 27 |
| Snow chance (%) | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 30 | 2 |
| 2 | 30 | 2 |
| 3 | 30 | 2 |
| 4 | 30 | 1 |
| 5 | 30 | 1 |
| 6 | 31 | 1 |
| 7 | 31 | 1 |
| 8 | 31 | 1 |
| 9 | 31 | 1 |
| 10 | 32 | 1 |
| 11 | 32 | 1 |
| 12 | 33 | 1 |
| 13 | 33 | 1 |
| 14 | 34 | 1 |
| 15 | 34 | 1 |
| 16 | 34 | 1 |
| 17 | 34 | 0 |
| 18 | 34 | 0 |
| 19 | 34 | 0 |
| 20 | 34 | 0 |
| 21 | 34 | 0 |
| 22 | 33 | 0 |
| 23 | 32 | 0 |
| 24 | 32 | 0 |
| 25 | 31 | 0 |
| 26 | 30 | 0 |
| 27 | 29 | 0 |
| 28 | 29 | 0 |
| 29 | 28 | 0 |
| 30 | 27 | 0 |
| 31 | 27 | 0 |
Humidity in May
Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, May 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 |
| Comfortable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | |
|---|---|---|
| 1 | 100 | 0 |
| 2 | 100 | 0 |
| 3 | 100 | 0 |
| 4 | 100 | 0 |
| 5 | 100 | 0 |
| 6 | 100 | 0 |
| 7 | 100 | 0 |
| 8 | 100 | 0 |
| 9 | 100 | 0 |
| 10 | 100 | 0 |
| 11 | 100 | 0 |
| 12 | 100 | 0 |
| 13 | 100 | 0 |
| 14 | 100 | 0 |
| 15 | 100 | 0 |
| 16 | 100 | 0 |
| 17 | 100 | 0 |
| 18 | 100 | 0 |
| 19 | 100 | 0 |
| 20 | 100 | 0 |
| 21 | 99 | 1 |
| 22 | 99 | 1 |
| 23 | 99 | 1 |
| 24 | 99 | 1 |
| 25 | 99 | 1 |
| 26 | 99 | 1 |
| 27 | 99 | 1 |
| 28 | 99 | 1 |
| 29 | 99 | 1 |
| 30 | 99 | 1 |
| 31 | 99 | 1 |
Wind in May
Winds average 6 mph in May.
Across May, daily wind ranges from about 6 mph on the calmest days to 6 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| 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 | calm |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 6 | calm |
| 2 | 6 | calm |
| 3 | 6 | calm |
| 4 | 6 | calm |
| 5 | 6 | calm |
| 6 | 6 | calm |
| 7 | 6 | calm |
| 8 | 6 | calm |
| 9 | 6 | calm |
| 10 | 6 | calm |
| 11 | 6 | calm |
| 12 | 6 | calm |
| 13 | 6 | calm |
| 14 | 6 | calm |
| 15 | 6 | calm |
| 16 | 6 | calm |
| 17 | 6 | calm |
| 18 | 6 | calm |
| 19 | 6 | calm |
| 20 | 6 | calm |
| 21 | 6 | calm |
| 22 | 6 | calm |
| 23 | 6 | calm |
| 24 | 6 | calm |
| 25 | 6 | calm |
| 26 | 6 | calm |
| 27 | 6 | calm |
| 28 | 6 | calm |
| 29 | 6 | calm |
| 30 | 6 | calm |
| 31 | 6 | calm |
Sunrise & sunset in May
Daylight runs from about 14 h 06 min at the start of May to 15 h 18 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 72 minutes over May. Sunrise moves from 4:48 AM to 4:13 AM, and sunset from 6:53 PM to 7:28 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 14.1 | 14.1 | 14.2 | 14.2 | 14.3 | 14.3 | 14.4 | 14.4 | 14.4 | 14.5 | 14.5 | 14.6 | 14.6 | 14.7 | 14.7 | 14.7 | 14.8 | 14.8 | 14.9 | 14.9 | 14.9 | 15.0 | 15.0 | 15.0 | 15.1 | 15.1 | 15.1 | 15.2 | 15.2 | 15.2 | 15.3 |
| Sunrise (AM) | 4:48 | 4:47 | 4:45 | 4:44 | 4:42 | 4:41 | 4:39 | 4:38 | 4:36 | 4:35 | 4:34 | 4:32 | 4:31 | 4:30 | 4:28 | 4:27 | 4:26 | 4:25 | 4:24 | 4:23 | 4:22 | 4:21 | 4:20 | 4:19 | 4:18 | 4:17 | 4:16 | 4:15 | 4:15 | 4:14 | 4:13 |
| Sunset (PM) | 6:53 | 6:54 | 6:55 | 6:57 | 6:58 | 6:59 | 7:01 | 7:02 | 7:03 | 7:05 | 7:06 | 7:07 | 7:08 | 7:10 | 7:11 | 7:12 | 7:13 | 7:14 | 7:16 | 7:17 | 7:18 | 7:19 | 7:20 | 7:21 | 7:22 | 7:23 | 7:24 | 7:25 | 7:26 | 7:27 | 7:28 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.1 | 4:48 | 6:53 |
| 2 | 14.1 | 4:47 | 6:54 |
| 3 | 14.2 | 4:45 | 6:55 |
| 4 | 14.2 | 4:44 | 6:57 |
| 5 | 14.3 | 4:42 | 6:58 |
| 6 | 14.3 | 4:41 | 6:59 |
| 7 | 14.4 | 4:39 | 7:01 |
| 8 | 14.4 | 4:38 | 7:02 |
| 9 | 14.4 | 4:36 | 7:03 |
| 10 | 14.5 | 4:35 | 7:05 |
| 11 | 14.5 | 4:34 | 7:06 |
| 12 | 14.6 | 4:32 | 7:07 |
| 13 | 14.6 | 4:31 | 7:08 |
| 14 | 14.7 | 4:30 | 7:10 |
| 15 | 14.7 | 4:28 | 7:11 |
| 16 | 14.7 | 4:27 | 7:12 |
| 17 | 14.8 | 4:26 | 7:13 |
| 18 | 14.8 | 4:25 | 7:14 |
| 19 | 14.9 | 4:24 | 7:16 |
| 20 | 14.9 | 4:23 | 7:17 |
| 21 | 14.9 | 4:22 | 7:18 |
| 22 | 15.0 | 4:21 | 7:19 |
| 23 | 15.0 | 4:20 | 7:20 |
| 24 | 15.0 | 4:19 | 7:21 |
| 25 | 15.1 | 4:18 | 7:22 |
| 26 | 15.1 | 4:17 | 7:23 |
| 27 | 15.1 | 4:16 | 7:24 |
| 28 | 15.2 | 4:15 | 7:25 |
| 29 | 15.2 | 4:15 | 7:26 |
| 30 | 15.2 | 4:14 | 7:27 |
| 31 | 15.3 | 4:13 | 7:28 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 6.55 kWh/m².
For context, solar energy here swings from a low near 1.28 kWh/m² to a high of 7.84 kWh/m² in July across the year — May's 6.55 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.2 | 6.3 | 6.3 | 6.3 | 6.3 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.6 | 6.6 | 6.6 | 6.7 | 6.7 | 6.7 | 6.8 | 6.8 | 6.8 | 6.8 | 6.8 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.2 | Intense |
| 2 | 6.3 | Intense |
| 3 | 6.3 | Intense |
| 4 | 6.3 | Intense |
| 5 | 6.3 | Intense |
| 6 | 6.4 | Intense |
| 7 | 6.4 | Intense |
| 8 | 6.4 | Intense |
| 9 | 6.4 | Intense |
| 10 | 6.4 | Intense |
| 11 | 6.4 | Intense |
| 12 | 6.5 | Intense |
| 13 | 6.5 | Intense |
| 14 | 6.5 | Intense |
| 15 | 6.5 | Intense |
| 16 | 6.5 | Intense |
| 17 | 6.5 | Intense |
| 18 | 6.5 | Intense |
| 19 | 6.5 | Intense |
| 20 | 6.5 | Intense |
| 21 | 6.6 | Intense |
| 22 | 6.6 | Intense |
| 23 | 6.6 | Intense |
| 24 | 6.7 | Intense |
| 25 | 6.7 | Intense |
| 26 | 6.7 | Intense |
| 27 | 6.8 | Intense |
| 28 | 6.8 | Intense |
| 29 | 6.8 | Intense |
| 30 | 6.8 | Intense |
| 31 | 6.8 | Intense |
Hazard calendar for Walla Walla
In May, Walla Walla sits inside its rainy season season. The full year is below, with each hazard's peak months called out.
Walla Walla's rainy season runs October–May, when most of the year's rain falls.
Is May a good time to visit Walla Walla?
Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
May is a reasonable time to visit Walla Walla for sightseeing.
What to pack for Walla Walla in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Walla Walla sees daytime highs around 66°F and nights near 45°F. Pack sun protection. Worth having: a warm layer and rain gear. About 10 days see rain.
UV index in Walla Walla in May
Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Walla Walla peaks around July 15 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 4 | 5 | 7 | 7 | 9 | 6 | 5 | 4 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | Very high | High | Very high | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 4 | Moderate |
| Apr | 5 | Moderate |
| May | 7 | Very high |
| Jun | 7 | High |
| Jul | 9 | Very high |
| Aug | 6 | High |
| Sep | 5 | Moderate |
| Oct | 4 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Air quality in Walla Walla in May
Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.
Air quality in Walla Walla is worst in August — around 29 µg/m³ PM2.5 (moderate), about 4.4× the cleanest month (December, 7 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) | 7 | 8 | 11 | 11 | 9 | 9 | 16 | 29 | 20 | 12 | 12 | 7 |
| Level | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 7 | Good |
| Feb | 8 | Good |
| Mar | 11 | Good |
| Apr | 11 | Good |
| May | 9 | Good |
| Jun | 9 | Good |
| Jul | 16 | Moderate |
| Aug | 29 | Moderate |
| Sep | 20 | Moderate |
| Oct | 12 | Moderate |
| Nov | 12 | Good |
| Dec | 7 | Good |
Where is Walla Walla?
Walla Walla sits at 46.1°N, 118.3°W, 942 ft above sea level, in United States. The nearest listed city is Pendleton, 35 mi away.
Topography around Walla Walla
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Walla Walla.
Within 2 miles, the terrain around Walla Walla has only modest variations in elevation — a maximum elevation change of 272 ft around an average of 945 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,333 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 6,115 ft.
The land around Walla Walla is covered by artificial surfaces (34%), trees (26%) and grassland (23%) within 2 miles, cropland (67%) and grassland (23%) within 10 miles, and grassland (44%), cropland (29%) and trees (24%) 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 Walla Walla (46.0646°, -118.343°, elevation 942 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. 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).