Rocky Mountain National Park Glacier Basin Campground

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 July, typically 41°F. The coldest are in January, when 1 night in 10 drops to -5°F. Frost is common in January, February, March, April, May, June, September, October, November and December.

1. Jan8°F -5°FBag comfortable to -5°F · frost 100% · rain or snow 32% of days
2. Feb9°F -5°FBag comfortable to -5°F · frost 100% · rain or snow 40% of days
3. Mar12°F 2°FBag comfortable to 5°F · frost 100% · rain or snow 38% of days
4. Apr18°F 7°FBag comfortable to 5°F · frost 100% · rain or snow 40% of days
5. May25°F 18°FBag comfortable to 20°F · frost 97% · rain or snow 54% of days
6. Jun35°F 29°FBag comfortable to 30°F · frost 26% · rain or snow 52% of days
7. Jul41°F 36°FBag comfortable to 35°F · frost 2% · rain or snow 58% of days
8. Aug40°F 36°FBag comfortable to 35°F · frost 1% · rain or snow 54% of days
9. Sep (this month)35°F 28°FBag comfortable to 30°F · frost 31% · rain or snow 35% of days
10. Oct25°F 11°FBag comfortable to 10°F · frost 86% · rain or snow 26% of days
11. Nov16°F 2°FBag comfortable to 5°F · frost 99% · rain or snow 24% of days
12. Dec10°F -4°FBag comfortable to -5°F · frost 100% · rain or snow 33% 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.