Sisters Weather in September
Sisters in September averages 25°C (77°F) during the day and 3°C (37°F) at night. This is part of the summer season. Minimal rainfall is to be expected.
Rainfall in Sisters in September
Rain is expected on roughly 3 days, totalling around 10 mm (0.4 in) for the month. Rain days are few and the total is low, so this is a largely dry month. Any showers that do occur tend to be brief.
Temperature in Sisters in September
Sisters in September has perfect weather. Days reach 25°C (77°F) and nights cool to 3°C (37°F). September marks the summer season. Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights fall to 3°C (37°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Sisters.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Sisters's climate page.
Sisters Temperature in September
Min Temperature
3°C (37°F)
Max Temperature
25°C (77°F)
Chance of Rain
10%
Precipitation
10 mm (0.4 in)
Rainy days
3 days
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Sisters in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Dry conditions mean you won't need to worry about rain protection.What To Do in Sisters in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Sisters's climate page.
See the full Sisters climate overview or explore weather in the United States of America.
