Ellensburg (WA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Ellensburg.
Climate overview of Ellensburg
Temperatures in Ellensburg, Washington State, United States of America, vary greatly throughout the year. July is the hottest month at 31°C (88°F), while December is the coldest at 2°C (36°F).
The city has an arid climate, receiving only 228 mm (9 in) of rain/snowfall per year.
Ellensburg Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Ellensburg - and find the best time to visit.
Monthly Temperature in Ellensburg
The climate in Ellensburg is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a very warm 31°C (88°F) in July to a chilly 2°C (36°F) in December.
Nighttime temperatures range from 14°C (57°F) in July to -6°C (21°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Ellensburg
Ellensburg is known for its low rain/snowfall, with yearly precipitation amounts around 228 mm (9 in). The seasons in Ellensburg bring significant changes in precipitation. The wettest month, December, receives moderate snow/rainfall, with an average of 39 mm (1.5 in) of precipitation. This snow/rainfall is distributed across 11 snowy/rainy days.
In contrast, the driest month, August, experiences much less rainfall, totaling 4 mm (0.2 in) over 2 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Ellensburg Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Ellensburg
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June and September
- Warmest weather: July and August
- Fewest rainy days: July, August and September
- Seasonal pattern: Very little rainfall year-round, with very warm summers and cold winters
- Coldest conditions: December, with freezing nights around -6°C (21°F).
Frequently asked questions about the climate in Ellensburg
What is the best time to visit Ellensburg?
May, June and September typically offer the most optimal weather in Ellensburg. In contrast, January and December tend to have less optimal conditions. Ellensburg has very little rainfall year-round, with very warm summers and cold winters.
What temperatures can I expect in Ellensburg?
Daytime highs range from 2°C (36°F) in December to 31°C (88°F) in July. Nighttime lows range from -6°C (21°F) to 14°C (57°F). Temperatures vary considerably through the year.
How much rain does Ellensburg get?
Annual rainfall is around 228 mm (9 in). December is the wettest month with 39 mm (1.5 in), while August is the driest with 4 mm (0.2 in). In the coldest months, precipitation may fall as snow/rain.
Ellensburg 3-Day Forecast
Ellensburg on the map
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