Last updated: March 2, 2024
Under the Köppen–Geiger climate classification Walla Walla East features a hot-summer Mediterranean climate (Csa). Temperatures typically range between 1 °C (34 °F) and 23 °C (74 °F) through the year, but rarely can drop to -19 °C (-1 °F) or can rise to as high as 43 °C (110 °F). The average annual precipitation amounts to about 688 mm (27.1 inches) and receives 113 rainy days on the 1 mm (0.04 inches) threshold annually. Walla Walla East enjoys an average of 3115 hours of sunshine throughout the year, and daylight varies from 8 hours 41 minutes to 15 hours 41 minutes per day.
The warmest months in Walla Walla East are June, July and August, with daily mean temperatures ranging from 18 to 23 °C (65 - 74 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 1 °C (34 - 34 °F) throughout the day. On average each year, Walla Walla East experiences 72 days above 25 °C (77.0 °F) and 85 days below 0 °C (32.0 °F).
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Maximum | 12°C (54°F) |
16°C (61°F) |
18°C (65°F) |
27°C (80°F) |
32°C (90°F) |
43°C (110°F) |
39°C (103°F) |
39°C (102°F) |
36°C (97°F) |
28°C (83°F) |
20°C (68°F) |
18°C (65°F) |
Mean maximum | 10°C (50°F) |
13°C (56°F) |
17°C (64°F) |
23°C (73°F) |
28°C (83°F) |
32°C (90°F) |
37°C (99°F) |
37°C (98°F) |
33°C (91°F) |
23°C (74°F) |
17°C (63°F) |
12°C (55°F) |
Average high | 4°C (40°F) |
5°C (41°F) |
10°C (50°F) |
14°C (58°F) |
20°C (67°F) |
24°C (76°F) |
30°C (87°F) |
29°C (85°F) |
23°C (74°F) |
15°C (59°F) |
9°C (48°F) |
4°C (39°F) |
Daily mean | 1°C (34°F) |
1°C (34°F) |
5°C (41°F) |
9°C (48°F) |
14°C (57°F) |
18°C (65°F) |
23°C (74°F) |
22°C (72°F) |
17°C (62°F) |
9°C (49°F) |
5°C (41°F) |
1°C (34°F) |
Average low | -1°C (30°F) |
-3°C (28°F) |
1°C (34°F) |
3°C (38°F) |
7°C (46°F) |
11°C (53°F) |
15°C (58°F) |
15°C (58°F) |
10°C (51°F) |
4°C (40°F) |
1°C (35°F) |
-2°C (29°F) |
Mean minimum | -10°C (14°F) |
-14°C (8°F) |
-6°C (21°F) |
-3°C (26°F) |
1°C (34°F) |
5°C (41°F) |
9°C (48°F) |
8°C (46°F) |
4°C (39°F) |
-4°C (25°F) |
-6°C (22°F) |
-11°C (12°F) |
Minimum | -19°C (-1°F) |
-17°C (2°F) |
-12°C (11°F) |
-7°C (20°F) |
-1°C (30°F) |
4°C (39°F) |
7°C (45°F) |
6°C (42°F) |
1°C (35°F) |
-11°C (13°F) |
-9°C (17°F) |
-14°C (6°F) |
Compare temperature, precipitation, sunshine, UV index in Walla Walla East, Washington, United States with other places around the world.
Walla Walla East usually has the most precipitation in February, November and December, with an average of 15 rainy days and 100 mm (4.0 inches) of precipitation per month. The driest months in Walla Walla East are July, August and September. On average, 12 mm (0.5 inches) of precipitation falls during these months.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Average precipitation mm (inches) | 77 (3.0) | 125 (4.9) | 75 (3.0) | 62 (2.4) | 48 (1.9) | 27 (1.1) | 2 (0.1) | 8 (0.3) | 25 (1.0) | 62 (2.4) | 84 (3.3) | 93 (3.7) |
Average precipitation days (≥ 1 mm) | 13 | 18 | 13 | 11 | 9 | 6 | 0 | 1 | 4 | 10 | 13 | 15 |
The sunniest months in Walla Walla East are June, July and August, when the sun shines an average of 12 hours 18 minutes a day. Least sunny months in Walla Walla East: January, February and December receive an average of 4 hours 26 minutes of sunshine daily.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mean monthly sunshine hours | 111 | 151 | 241 | 284 | 342 | 365 | 411 | 355 | 291 | 242 | 176 | 141 |
Mean daily daylight hours | 9h 5m | 10h 21m | 11h 57m | 13h 35m | 14h 59m | 15h 41m | 15h 17m | 14h 2m | 12h 28m | 10h 51m | 9h 25m | 8h 41m |
Walla Walla East experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure. January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Walla Walla East UV Index data.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
UV Index (month maximum) | 2 | 4 | 6 | 7 | 9 | 10 | 10 | 9 | 7 | 5 | 3 | 2 |
Discover in-depth weather details for every month in Walla Walla East. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Walla Walla East's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.
Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.