La Grande (OR) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit La Grande.
Climate overview of La Grande
Temperatures in La Grande, Oregon, United States of America, vary greatly throughout the year. July is the hottest month at 30°C (86°F), while December is the coldest at 3°C (37°F).
The city has a relatively dry climate, receiving around 481 mm (19 in) of rain/snowfall per year. It does experience a distinct dry season from July to October, with warm summers and cold winters. December is the wettest month and August the driest.
La Grande Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in La Grande - and find the best time to visit.
Monthly Temperature in La Grande
The climate in La Grande is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a comfortable 30°C (86°F) in July to a chilly 3°C (37°F) in December.
Nighttime temperatures range from 11°C (52°F) in July to -4°C (25°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in La Grande
La Grande has a relatively dry climate with low precipitation, averaging 481 mm (19 in) of rain/snowfall annually. The seasons in La Grande bring significant changes in precipitation. The wettest month, December, receives moderate snowfall, with an average of 64 mm (2.5 in) of precipitation. This snowfall is distributed across 16 snowy days.
In contrast, the driest month, August, experiences much less rainfall, totaling 13 mm (0.5 in) over 4 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our La Grande 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 La Grande
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, August and September
- Warmest weather: July and August
- Fewest rainy days: July, August and September
- Seasonal pattern: A distinct dry season from July to October, with warm summers and cold winters
- Coldest conditions: December, with freezing nights around -4°C (25°F).
Frequently asked questions about the climate in La Grande
What is the best time to visit La Grande?
June, August and September typically offer the most optimal weather in La Grande. In contrast, January, February, March, November and December tend to have less optimal conditions. La Grande has a distinct dry season from July to October, with warm summers and cold winters.
What temperatures can I expect in La Grande?
Daytime highs range from 3°C (37°F) in December to 30°C (86°F) in July. Nighttime lows range from -4°C (25°F) to 11°C (52°F). Temperatures vary considerably through the year.
How much rain does La Grande get?
Annual rainfall is around 481 mm (19 in). December is the wettest month with 64 mm (2.5 in), while August is the driest with 13 mm (0.5 in). In the coldest months, precipitation may fall as snow.
La Grande 3-Day Forecast
La Grande (OR) 3-Day Forecast
La Grande on the map
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