Walla Walla weather by month & the best time to visit
United States · small town · Mediterranean climate
The best time to visit Walla Walla is July — its sunniest month (Sunshine Score 93/100), with August and September close behind. Walla Walla averages about 2,744 hours of sunshine a year. Daytime highs around 31°C / 88°F and roughly 11 mm of rain in July.
When is the best time to visit Walla Walla?
For sunshine, the best time to visit Walla Walla is July, then August and September. The dullest month is January (0/100, 83 mm of rain). The full month-by-month picture is in the table below.
How sunny is Walla Walla?
Walla Walla gets a lot of sun: around 2,744 hours a year. 93 Sunshine Score points separate July (93) from January (0), so the month you pick matters. It ranks #131 of 580 destinations in United States for annual sunshine, above the national median of 2,279 hours. The year's 680 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | 6° / 43°F | -1° / 30°F | 83 mm | 1 |
| February | 0 | 8° / 46°F | 0° / 32°F | 69 mm | 2 |
| March | 27 | 12° / 54°F | 2° / 36°F | 82 mm | 3 |
| April | 49 | 15° / 59°F | 5° / 41°F | 61 mm | 5 |
| May | 84 | 21° / 70°F | 9° / 48°F | 62 mm | 6 |
| June | 87 | 25° / 77°F | 12° / 54°F | 47 mm | 7 |
| July | 93 | 31° / 88°F | 16° / 61°F | 11 mm | 8 |
| August | 92 | 31° / 88°F | 16° / 61°F | 16 mm | 7 |
| September | 91 | 26° / 79°F | 12° / 54°F | 23 mm | 5 |
| October | 71 | 18° / 64°F | 7° / 45°F | 54 mm | 3 |
| November | 14 | 10° / 50°F | 2° / 36°F | 77 mm | 1 |
| December | 0 | 6° / 43°F | -1° / 30°F | 95 mm | 1 |
Nearest destinations
Walla Walla: questions and answers
What kind of destination is Walla Walla?
Walla Walla is a small town in United States at 353 m elevation with a Mediterranean climate.
How many hours of sunshine does Walla Walla get a year?
Walla Walla gets about 2,744 hours of sunshine a year, at its best around July.
When is the best time to visit Walla Walla?
The sunniest time to visit Walla Walla is July, when the Sunshine Score peaks at 93/100 (with August and September close behind). Expect daytime highs around 31°C / 88°F.
What is the least sunny month in Walla Walla?
January is the least sunny month in Walla Walla, scoring 0/100 with about 83 mm of rain.
How strong is the sun in Walla Walla?
The typical midday UV index in Walla Walla peaks around 8 (very high) in July, easing to about 1 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
Put the Walla Walla sunshine badge on your site
A compact badge showing Walla Walla's sunshine at a glance — free to embed under CC BY 4.0. Paste this wherever you'd like it to appear:
Live preview — this is exactly what your readers see: