Douglas weather by month
What a typical year looks like in Douglas, Wyoming: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Converse County Airport Asos, 5 km from Douglas; records cover 1999–2026.
The year at a glance
- Precipitation a year
- 11.2 in285 mm
- Snow a year
- Rare
- Last spring freeze
- May 25
- First fall freeze
- Sep 14
- Heating degree days
- 7,303
- Cooling degree days
- 512
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −13°−25° (heating, 99%) and 99°37° (cooling, 1%).
Month by month
Douglas in January
Highs average 39°4° and lows 13°−11°, with 0.3 in7.6 mm of precipitation in a typical January.
- Record high
- 71°22° (2015)
- Record low
- −33°−36° (2009)
- Heating degree days
- 1215
- Cooling degree days
- 0
Douglas in February
Highs average 40°5° and lows 14°−10°, with 0.31 in7.9 mm of precipitation in a typical February.
- Record high
- 68°20° (2017)
- Record low
- −33°−36° (2006)
- Heating degree days
- 1061
- Cooling degree days
- 0
Douglas in March
Highs average 50°10° and lows 23°−5°, with 0.68 in17 mm of precipitation in a typical March.
- Record high
- 85°29° (2026)
- Record low
- −20°−29° (2022)
- Heating degree days
- 884
- Cooling degree days
- 0
Douglas in April
Highs average 58°14° and lows 30°−1°, with 1.6 in40 mm of precipitation in a typical April.
- Record high
- 87°31° (2012)
- Record low
- −7°−22° (2020)
- Heating degree days
- 644
- Cooling degree days
- 0
Douglas in May
Highs average 67°19° and lows 39°4°, with 2.3 in59 mm of precipitation in a typical May.
- Record high
- 97°36° (2003)
- Record low
- 16°−9° (2002)
- Heating degree days
- 383
- Cooling degree days
- 7
Douglas in June
Highs average 80°27° and lows 48°9°, with 1.6 in41 mm of precipitation in a typical June.
- Record high
- 102°39° (2012)
- Record low
- 29°−2° (2001)
- Heating degree days
- 107
- Cooling degree days
- 67
Douglas in July
Highs average 89°32° and lows 55°13°, with 0.85 in22 mm of precipitation in a typical July.
- Record high
- 105°41° (2005)
- Record low
- 40°4° (2008)
- Heating degree days
- 11
- Cooling degree days
- 225
Douglas in August
Highs average 87°31° and lows 53°12°, with 1 in26 mm of precipitation in a typical August.
- Record high
- 103°39° (2007)
- Record low
- 31°−1° (2015)
- Heating degree days
- 26
- Cooling degree days
- 178
Douglas in September
Highs average 77°25° and lows 43°6°, with 0.97 in25 mm of precipitation in a typical September.
- Record high
- 101°38° (2022)
- Record low
- 14°−10° (2000)
- Heating degree days
- 197
- Cooling degree days
- 35
Douglas in OctoberThis month
Highs average 61°16° and lows 30°−1°, with 0.92 in23 mm of precipitation in a typical October.
- Record high
- 89°32° (2011)
- Record low
- −15°−26° (2020)
- Heating degree days
- 602
- Cooling degree days
- 0
Douglas in November
Highs average 48°9° and lows 20°−7°, with 0.35 in8.9 mm of precipitation in a typical November.
- Record high
- 76°24° (1999)
- Record low
- −25°−32° (2014)
- Heating degree days
- 930
- Cooling degree days
- 0
Douglas in December
Highs average 38°3° and lows 12°−11°, with 0.27 in6.9 mm of precipitation in a typical December.
- Record high
- 71°22° (2021)
- Record low
- −29°−34° (2022)
- Heating degree days
- 1243
- Cooling degree days
- 0