Sisters (OR) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Sisters.
Climate overview of Sisters
Sisters, Oregon, United States of America, sees big temperature differences between seasons, with July peaking at 30°C (86°F) and December dropping to 4°C (39°F).
Rain/snowfall is modest, totalling around 336 mm (13 in) annually. The city experiences a distinct dry season from February to November. December tends to be the wettest month.
Sisters Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sisters — and find the best time to visit.
Monthly Temperature in Sisters
Visitors to Sisters can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 30°C (86°F) in July, the warmest time of the year, to a chilly 4°C (39°F) during cooler months like December.
At night, you can expect temperatures ranging from 7°C (45°F) in July to around -6°C (21°F) during December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Sisters
Sisters typically sees modest rain/snowfall throughout the year, with an average annual precipitation of 336 mm (13 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, December it receives moderate snow/rainfall, averaging 72 mm (2.8 in) of precipitation, recorded across 17 snowy/rainy days. In contrast, the driest month July brings less rainfall, with 6.7 mm (0.3 in) over 2 rainy days. For more details, please visit our Sisters 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 Sisters
The weather does bring rainfall during this period, between 7 mm (0.3 in) and 24 mm (0.9 in). Need help choosing your next travel destination? We offer a specialized tool that matches you with locations based on your weather preferences. Explore destinations that suit your climate preferences.
Frequently asked questions about the climate in Sisters
What is the best time to visit Sisters?
May, June, August and September typically offer the most optimal weather in Sisters. In contrast, January, February, November and December tend to have less optimal conditions. Sisters has a distinct dry season from February to November.
What temperatures can I expect in Sisters?
Daytime highs range from 4°C (39°F) in December to 30°C (86°F) in July. Nighttime lows range from -6°C (21°F) to 7°C (45°F). Temperatures vary considerably through the year.
How much rain does Sisters get?
Annual rainfall is around 336 mm (13 in). December is the wettest month with 72 mm (2.8 in), while July is the driest with 6.7 mm (0.3 in). In the coldest months, precipitation may fall as snow/rain.
Sisters 3-Day Forecast
Sisters (OR) 3-Day Forecast
Sisters on the map
Sisters is highlighted — select any city to see its climate.
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