Onion Mountain Lookout

Nights by month

Night lows from 2016 to 2025: a typical night, and the cold one that comes 1 night in 10.

The mildest nights are in August, typically 58°F. The coldest are in February, when 1 night in 10 drops to 27°F. Frost is common in January, February, March and December.

1. Jan37°F 30°FBag comfortable to 30°F · frost 19% · rain or snow 54% of days
2. Feb35°F 27°FBag comfortable to 25°F · frost 33% · rain or snow 46% of days
3. Mar36°F 29°FBag comfortable to 30°F · frost 24% · rain or snow 50% of days
4. Apr40°F 33°FBag comfortable to 35°F · frost 7% · rain or snow 36% of days
5. May45°F 39°FBag comfortable to 40°F · frost 0% · rain or snow 24% of days
6. Jun51°F 44°FBag comfortable to 45°F · frost 0% · rain or snow 14% of days
7. Jul56°F 51°FBag comfortable to 50°F · frost 0% · rain or snow 3% of days
8. Aug58°F 52°FBag comfortable to 55°F · frost 0% · rain or snow 4% of days
9. Sep53°F 47°FBag comfortable to 45°F · frost 0% · rain or snow 16% of days
10. Oct46°F 40°FBag comfortable to 40°F · frost 0% · rain or snow 30% of days
11. Nov (this month)40°F 34°FBag comfortable to 35°F · frost 4% · rain or snow 47% of days
12. Dec36°F 30°FBag comfortable to 30°F · frost 18% · rain or snow 48% of days

| = 32°F

History: ERA5 and ERA5-Land reanalysis via Open-Meteo, corrected to the site's elevation. Bag rating: the comfort rating that keeps you warm in a tent on 9 of 10 nights that month.