What’s the climate like in Walla Walla?
The current climate of Walla Walla features average monthly temperatures ranging from highs of 33°C during the day to lows of 4°C. The average yearly temperature is around 18°C. At night, temperatures in the colder months average around -3°C and in the warmer months around 18°C.
The highest temperature recorded in Walla Walla in recent years was 47°C in June 2021. The lowest daytime temperature recorded was -15°C in December 2022.
On average, Walla Walla gets 567 mm of precipitation each year. Of this, about 60 cm is snowfall. For comparison, London gets 701 mm of precipitation each year.
Best time to visit Walla Walla?
The best time to visit Walla Walla for sunny weather is May through October. During this period, you'll have good temperatures and not too much rain, making it a great time to visit Walla Walla. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
Climate Table of Walla Walla
The climate table of Walla Walla shows the average temperatures, precipitation, snow, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 4 | 8 | 13 | 17 | 23 | 28 | 33 | 32 | 25 | 18 | 10 | 5 |
| Temp. min (°C) | -2 | 0 | 4 | 7 | 11 | 15 | 19 | 18 | 13 | 8 | 3 | 0 |
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| Precipitation (mm) | 60 | 44 | 64 | 63 | 53 | 24 | 4,2 | 8,1 | 22 | 60 | 72 | 92 |
| Snow (cm) | 17 | 17 | 4,1 | 2,1 | 0 | 0 | 0 | 0 | 0 | 0,2 | 2,5 | 17 |
| UV Index | 2 | 3 | 4 | 6 | 8 | 8 | 9 | 8 | 6 | 5 | 2 | 1 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 18°C
- Highest temperature: 33°C in July
- Lowest temperature: 4°C in January
- Precipitation*: 567 mm per year, averaging 47 mm per month
- Snowfall: 60 cm per year
- Driest months: 4,2 mm in July, 8,1 mm in August and 22 mm in September
- Wettest months: 92 mm in December, 72 mm in November and 64 mm in March
*Precipitation is measured as a combination of rain, snow, and hail
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Table of Contents
Average Temperature per Month in Walla Walla
This graph shows the average maximum temperatures per month in Walla Walla, Washington. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Walla Walla
This graph shows how much precipitation Walla Walla, Washington, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average Snowfall per Month in Walla Walla
This graph shows how much snow Walla Walla, Washington, gets on average per month. The amount of snowfall is measured in centimetres and the average is calculated based on the recorded snowfall per month from past years.
Average UV Index per Month in Walla Walla
This graph shows the average UV index per month in Walla Walla, Washington. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in Walla Walla
This graph shows the average yearly temperature in Walla Walla, Washington. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Walla Walla
This chart shows the total yearly precipitation in Walla Walla, Washington, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Total Yearly Snowfall in Walla Walla
This chart shows the total yearly snowfall in Walla Walla, Washington, over the past few years. The total yearly snowfall, measured in centimetres, is the sum of all the snow that fell in the twelve months of that year.
Weather experiences in Walla Walla
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Average Weather in Walla Walla by Month
Click on a month below to see detailed weather info for Walla Walla. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
