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Walla Walla, WA weather and climate

Walla Walla County, WA · population 33,766 · about 978 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at Walla Walla's own coordinates.

The year at a glance

Sunny days
210
clear or partly cloudy, per year
Precipitation
25 in
per year
Wet days
119
rain or snow per year
Snowfall
27 in
per year
Hot days
42
above 90 °F
Freezing nights
80
at or below 32 °F
Humidity
60%
average relative
Average temperature
54 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
406080JanMarMayJulSepNovDaily high, Jan: 42 °FDaily high, Feb: 47 °FDaily high, Mar: 56 °FDaily high, Apr: 63 °FDaily high, May: 72 °FDaily high, Jun: 79 °FDaily high, Jul: 90 °FDaily high, Aug: 89 °FDaily high, Sep: 79 °FDaily high, Oct: 64 °FDaily high, Nov: 50 °FDaily high, Dec: 41 °FDaily low, Jan: 30 °FDaily low, Feb: 32 °FDaily low, Mar: 37 °FDaily low, Apr: 42 °FDaily low, May: 48 °FDaily low, Jun: 54 °FDaily low, Jul: 61 °FDaily low, Aug: 60 °FDaily low, Sep: 52 °FDaily low, Oct: 42 °FDaily low, Nov: 35 °FDaily low, Dec: 30 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high424756637279908979645041
Daily low303237424854616052423530

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.01.02.03.0JanMarMayJulSepNovWalla Walla, Jan: 3.3 inWalla Walla, Feb: 2.6 inWalla Walla, Mar: 2.9 inWalla Walla, Apr: 2.2 inWalla Walla, May: 2.1 inWalla Walla, Jun: 1.3 inWalla Walla, Jul: 0.3 inWalla Walla, Aug: 0.4 inWalla Walla, Sep: 0.8 inWalla Walla, Oct: 2.1 inWalla Walla, Nov: 3.3 inWalla Walla, Dec: 3.6 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Walla Walla3.32.62.92.22.11.30.30.40.82.13.33.6

Monthly sunny days

Days each month with clear or partly cloudy skies.

0102030JanMarMayJulSepNovWalla Walla, Jan: 10 daysWalla Walla, Feb: 12 daysWalla Walla, Mar: 13 daysWalla Walla, Apr: 15 daysWalla Walla, May: 18 daysWalla Walla, Jun: 21 daysWalla Walla, Jul: 28 daysWalla Walla, Aug: 28 daysWalla Walla, Sep: 24 daysWalla Walla, Oct: 19 daysWalla Walla, Nov: 12 daysWalla Walla, Dec: 11 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Walla Walla101213151821282824191211

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About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).