Roubaix Lake

Black Hills National Forest, South Dakota

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 55°F. The coldest are in February, when 1 night in 10 drops to -10°F. Frost is common in January, February, March, April, May, October, November and December.

Typical nightCold night (1 in 10)
  1. Jan16°F -2°FBag comfortable to 0°F · frost 98% · rain or snow 24% of days
  2. Feb13°F -10°FBag comfortable to -10°F · frost 96% · rain or snow 32% of days
  3. Mar20°F 10°FBag comfortable to 10°F · frost 94% · rain or snow 33% of days
  4. Apr27°F 11°FBag comfortable to 10°F · frost 76% · rain or snow 42% of days
  5. May37°F 27°FBag comfortable to 25°F · frost 27% · rain or snow 57% of days
  6. Jun49°F 41°FBag comfortable to 40°F · frost 0% · rain or snow 46% of days
  7. Jul55°F 49°FBag comfortable to 50°F · frost 0% · rain or snow 44% of days
  8. Aug53°F 46°FBag comfortable to 45°F · frost 0% · rain or snow 33% of days
  9. Sep47°F 37°FBag comfortable to 40°F · frost 2% · rain or snow 27% of days
  10. Oct34°F 19°FBag comfortable to 20°F · frost 43% · rain or snow 24% of days
  11. Nov (this month)26°F 13°FBag comfortable to 15°F · frost 81% · rain or snow 20% of days
  12. Dec18°F 2°FBag comfortable to 0°F · frost 94% · rain or snow 24% 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.

Tonight

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Checked for a double-wall tent, a 3-season bag and a thin air pad. Check your own gear here.

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