Walla Walla weather in September
In September, Walla Walla sees average daytime highs of 73°F and overnight lows near 49°F, with 0.8 in of rain across 4.1 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.
Highs ease over the month, from about 78°F in the first days to 69°F by the end. The sky is clear or mostly clear about 59% of the time in September, and the air most often feels dry.
Daylight stretches from about 13 h 06 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is Walla Walla's 3rd-clearest and 12th-windiest month. For the whole year in context, see Walla Walla's year-round climate.
- Daytime high
- 73°
- 4th warmest
- Overnight low
- 49°
- 9th coldest
- Rainfall
- 0.8 in
- 4.1 wet days
- Daylight
- 12 h 18 min
- 5:38 AM – 5:57 PM
- Cloud cover
- 35%
- 3rd clearest
- Wind
- 5 mph
- 12th windiest
- Solar energy
- 5.01 kWh/m²
- Travel score
- 8.1
- 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 September
Highs ease over the month, from about 78°F in the first days to 69°F by the end.
A typical September day in Walla Walla reaches about 73°F in the afternoon and slips back to 49°F overnight — a 24°F spread between the day's warmth and the night's chill. On most days the high lands between 62°F and 85°F. Set against its neighbours, September runs about 10°F cooler than August and about 14°F warmer than October.
| 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) | 79 | 78 | 78 | 78 | 77 | 77 | 77 | 76 | 76 | 76 | 75 | 75 | 74 | 74 | 74 | 73 | 73 | 73 | 72 | 72 | 72 | 71 | 71 | 71 | 70 | 70 | 69 | 69 | 68 | 68 |
| Avg low (°F) | 53 | 53 | 52 | 52 | 52 | 52 | 51 | 51 | 51 | 51 | 50 | 50 | 50 | 50 | 49 | 49 | 49 | 49 | 48 | 48 | 48 | 47 | 47 | 47 | 47 | 46 | 46 | 46 | 46 | 45 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 79 | 53 |
| 2 | 78 | 53 |
| 3 | 78 | 52 |
| 4 | 78 | 52 |
| 5 | 77 | 52 |
| 6 | 77 | 52 |
| 7 | 77 | 51 |
| 8 | 76 | 51 |
| 9 | 76 | 51 |
| 10 | 76 | 51 |
| 11 | 75 | 50 |
| 12 | 75 | 50 |
| 13 | 74 | 50 |
| 14 | 74 | 50 |
| 15 | 74 | 49 |
| 16 | 73 | 49 |
| 17 | 73 | 49 |
| 18 | 73 | 49 |
| 19 | 72 | 48 |
| 20 | 72 | 48 |
| 21 | 72 | 48 |
| 22 | 71 | 47 |
| 23 | 71 | 47 |
| 24 | 71 | 47 |
| 25 | 70 | 47 |
| 26 | 70 | 46 |
| 27 | 69 | 46 |
| 28 | 69 | 46 |
| 29 | 68 | 46 |
| 30 | 68 | 45 |
How September really feels in Walla Walla
Once humidity and wind are folded in, September 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.
September 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 September compares with the rest of the year at a glance. September is the 4th-warmest and 10th-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 September
The sky is clear or mostly clear about 59% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 26%. Skies tend to cloud over 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 (%) | 83 | 83 | 82 | 82 | 80 | 80 | 78 | 78 | 76 | 76 | 75 | 75 | 73 | 73 | 72 | 72 | 72 | 72 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 70 | 70 |
| Cloudier (%) | 17 | 17 | 18 | 18 | 20 | 20 | 22 | 22 | 24 | 24 | 25 | 25 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 30 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 83 | 17 |
| 2 | 83 | 17 |
| 3 | 82 | 18 |
| 4 | 82 | 18 |
| 5 | 80 | 20 |
| 6 | 80 | 20 |
| 7 | 78 | 22 |
| 8 | 78 | 22 |
| 9 | 76 | 24 |
| 10 | 76 | 24 |
| 11 | 75 | 25 |
| 12 | 75 | 25 |
| 13 | 73 | 27 |
| 14 | 73 | 27 |
| 15 | 72 | 28 |
| 16 | 72 | 28 |
| 17 | 72 | 28 |
| 18 | 72 | 28 |
| 19 | 71 | 29 |
| 20 | 71 | 29 |
| 21 | 71 | 29 |
| 22 | 71 | 29 |
| 23 | 71 | 29 |
| 24 | 71 | 29 |
| 25 | 71 | 29 |
| 26 | 71 | 29 |
| 27 | 71 | 29 |
| 28 | 71 | 29 |
| 29 | 70 | 30 |
| 30 | 70 | 30 |
Chance of precipitation in September
Walla Walla gets around 0.8 in of rain over 4.1 wet days in September. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 14% and peaks near 19% on the wettest days. The odds climb 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 (%) | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 11 | 11 | 12 | 13 | 13 | 13 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 18 | 18 | 19 |
| Rain chance (%) | |
|---|---|
| 1 | 9 |
| 2 | 9 |
| 3 | 9 |
| 4 | 9 |
| 5 | 10 |
| 6 | 10 |
| 7 | 10 |
| 8 | 11 |
| 9 | 11 |
| 10 | 12 |
| 11 | 13 |
| 12 | 13 |
| 13 | 13 |
| 14 | 14 |
| 15 | 14 |
| 16 | 14 |
| 17 | 15 |
| 18 | 15 |
| 19 | 15 |
| 20 | 15 |
| 21 | 16 |
| 22 | 16 |
| 23 | 16 |
| 24 | 17 |
| 25 | 17 |
| 26 | 17 |
| 27 | 17 |
| 28 | 18 |
| 29 | 18 |
| 30 | 19 |
Humidity in September
Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the dry band about 99% 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 (%) | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 100 | 100 | 100 | 100 | 100 |
| Comfortable (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | |
|---|---|---|
| 1 | 99 | 1 |
| 2 | 99 | 1 |
| 3 | 99 | 1 |
| 4 | 99 | 1 |
| 5 | 99 | 1 |
| 6 | 99 | 1 |
| 7 | 99 | 1 |
| 8 | 99 | 1 |
| 9 | 99 | 1 |
| 10 | 99 | 1 |
| 11 | 99 | 1 |
| 12 | 99 | 1 |
| 13 | 99 | 1 |
| 14 | 99 | 1 |
| 15 | 99 | 1 |
| 16 | 99 | 1 |
| 17 | 99 | 1 |
| 18 | 99 | 1 |
| 19 | 99 | 1 |
| 20 | 99 | 1 |
| 21 | 99 | 1 |
| 22 | 99 | 1 |
| 23 | 99 | 1 |
| 24 | 99 | 1 |
| 25 | 99 | 1 |
| 26 | 100 | 0 |
| 27 | 100 | 0 |
| 28 | 100 | 0 |
| 29 | 100 | 0 |
| 30 | 100 | 0 |
Wind in September
Winds average 5 mph in September, the calmest month.
Across September, 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 September
Daylight runs from about 13 h 06 min at the start of September to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 96 minutes over September. Sunrise moves from 5:19 AM to 5:56 AM, and sunset from 6:27 PM to 5:29 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) | 13.1 | 13.1 | 13.0 | 13.0 | 12.9 | 12.9 | 12.8 | 12.8 | 12.7 | 12.7 | 12.6 | 12.5 | 12.5 | 12.4 | 12.4 | 12.3 | 12.3 | 12.2 | 12.2 | 12.1 | 12.0 | 12.0 | 11.9 | 11.9 | 11.8 | 11.8 | 11.7 | 11.7 | 11.6 | 11.5 |
| Sunrise (AM) | 5:19 | 5:20 | 5:21 | 5:23 | 5:24 | 5:25 | 5:26 | 5:28 | 5:29 | 5:30 | 5:32 | 5:33 | 5:34 | 5:35 | 5:37 | 5:38 | 5:39 | 5:41 | 5:42 | 5:43 | 5:45 | 5:46 | 5:47 | 5:49 | 5:50 | 5:51 | 5:52 | 5:54 | 5:55 | 5:56 |
| Sunset (PM) | 6:27 | 6:26 | 6:24 | 6:22 | 6:20 | 6:18 | 6:16 | 6:14 | 6:12 | 6:10 | 6:08 | 6:05 | 6:03 | 6:01 | 5:59 | 5:57 | 5:55 | 5:53 | 5:51 | 5:49 | 5:47 | 5:45 | 5:43 | 5:41 | 5:39 | 5:37 | 5:35 | 5:33 | 5:31 | 5:29 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.1 | 5:19 | 6:27 |
| 2 | 13.1 | 5:20 | 6:26 |
| 3 | 13.0 | 5:21 | 6:24 |
| 4 | 13.0 | 5:23 | 6:22 |
| 5 | 12.9 | 5:24 | 6:20 |
| 6 | 12.9 | 5:25 | 6:18 |
| 7 | 12.8 | 5:26 | 6:16 |
| 8 | 12.8 | 5:28 | 6:14 |
| 9 | 12.7 | 5:29 | 6:12 |
| 10 | 12.7 | 5:30 | 6:10 |
| 11 | 12.6 | 5:32 | 6:08 |
| 12 | 12.5 | 5:33 | 6:05 |
| 13 | 12.5 | 5:34 | 6:03 |
| 14 | 12.4 | 5:35 | 6:01 |
| 15 | 12.4 | 5:37 | 5:59 |
| 16 | 12.3 | 5:38 | 5:57 |
| 17 | 12.3 | 5:39 | 5:55 |
| 18 | 12.2 | 5:41 | 5:53 |
| 19 | 12.2 | 5:42 | 5:51 |
| 20 | 12.1 | 5:43 | 5:49 |
| 21 | 12.0 | 5:45 | 5:47 |
| 22 | 12.0 | 5:46 | 5:45 |
| 23 | 11.9 | 5:47 | 5:43 |
| 24 | 11.9 | 5:49 | 5:41 |
| 25 | 11.8 | 5:50 | 5:39 |
| 26 | 11.8 | 5:51 | 5:37 |
| 27 | 11.7 | 5:52 | 5:35 |
| 28 | 11.7 | 5:54 | 5:33 |
| 29 | 11.6 | 5:55 | 5:31 |
| 30 | 11.5 | 5:56 | 5:29 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 5.01 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 — September's 5.01 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) | 5.9 | 5.8 | 5.8 | 5.7 | 5.7 | 5.6 | 5.5 | 5.5 | 5.4 | 5.3 | 5.3 | 5.2 | 5.2 | 5.1 | 5.0 | 5.0 | 4.9 | 4.8 | 4.8 | 4.7 | 4.7 | 4.6 | 4.5 | 4.5 | 4.4 | 4.4 | 4.3 | 4.2 | 4.2 | 4.1 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.9 | Bright |
| 2 | 5.8 | Bright |
| 3 | 5.8 | Bright |
| 4 | 5.7 | Bright |
| 5 | 5.7 | Bright |
| 6 | 5.6 | Bright |
| 7 | 5.5 | Bright |
| 8 | 5.5 | Bright |
| 9 | 5.4 | Bright |
| 10 | 5.3 | Bright |
| 11 | 5.3 | Bright |
| 12 | 5.2 | Bright |
| 13 | 5.2 | Bright |
| 14 | 5.1 | Bright |
| 15 | 5.0 | Bright |
| 16 | 5.0 | Bright |
| 17 | 4.9 | Bright |
| 18 | 4.8 | Bright |
| 19 | 4.8 | Bright |
| 20 | 4.7 | Bright |
| 21 | 4.7 | Bright |
| 22 | 4.6 | Bright |
| 23 | 4.5 | Bright |
| 24 | 4.5 | Bright |
| 25 | 4.4 | Bright |
| 26 | 4.4 | Bright |
| 27 | 4.3 | Bright |
| 28 | 4.2 | Bright |
| 29 | 4.2 | Bright |
| 30 | 4.1 | Bright |
Hazard calendar for Walla Walla
None of Walla Walla's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Walla Walla's rainy season runs October–May, when most of the year's rain falls.
Is September a good time to visit Walla Walla?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is one of the better times to visit Walla Walla for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Walla Walla in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Walla Walla sees daytime highs around 73°F and nights near 49°F. Worth packing: light clothes and sun protection. About 4 days see rain.
UV index in Walla Walla in September
Clear-sky midday UV in September peaks around 5 — 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 September
Average fine-particle pollution (PM2.5) through the year — so you can see where September 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).