Little America weather by month
What a typical year looks like in Little America, Wyoming: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Church Buttes Gas Plant, 24 km from Little America; records cover 1891–2026.
The year at a glance
- Precipitation a year
- 7.9 in200 mm
- Snow a year
- 31 in78 cm
- Last spring freeze
- May 26
- First fall freeze
- Sep 22
- Heating degree days
- 8,206
- Cooling degree days
- 304
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −7°−22° (heating, 99%) and 91°33° (cooling, 1%).
Month by month
Little America in January
Highs average 31°0° and lows 13°−11°, with 0.53 in13 mm of precipitation and 7 in18 cm of snow in a typical January.
- Record high
- 54°12° (1969)
- Record low
- −35°−37° (1985)
- Heating degree days
- 1338
- Cooling degree days
- 0
Little America in February
Highs average 33°0° and lows 13°−10°, with 0.35 in8.9 mm of precipitation and 5 in12 cm of snow in a typical February.
- Record high
- 59°15° (2025)
- Record low
- −35°−37° (1989)
- Heating degree days
- 1179
- Cooling degree days
- 0
Little America in March
Highs average 43°6° and lows 23°−5°, with 0.48 in12 mm of precipitation and 4 in10 cm of snow in a typical March.
- Record high
- 80°27° (2026)
- Record low
- −15°−26° (2022)
- Heating degree days
- 994
- Cooling degree days
- 0
Little America in April
Highs average 52°11° and lows 28°−2°, with 0.79 in20 mm of precipitation and 2.3 in5.8 cm of snow in a typical April.
- Record high
- 80°27° (1989)
- Record low
- −2°−19° (1985)
- Heating degree days
- 753
- Cooling degree days
- 0
Little America in May
Highs average 63°17° and lows 37°3°, with 1.2 in31 mm of precipitation and 1.1 in2.8 cm of snow in a typical May.
- Record high
- 89°32° (1967)
- Record low
- 11°−12° (2013)
- Heating degree days
- 462
- Cooling degree days
- 3
Little America in June
Highs average 75°24° and lows 46°8°, with 0.86 in22 mm of precipitation in a typical June.
- Record high
- 100°38° (1985)
- Record low
- 25°−4° (1960)
- Heating degree days
- 164
- Cooling degree days
- 36
Little America in July
Highs average 83°29° and lows 55°13°, with 0.42 in11 mm of precipitation in a typical July.
- Record high
- 98°37° (2002)
- Record low
- 30°−1° (1987)
- Heating degree days
- 25
- Cooling degree days
- 147
Little America in August
Highs average 81°27° and lows 53°12°, with 0.7 in18 mm of precipitation in a typical August.
- Record high
- 98°37° (1981)
- Record low
- 29°−2° (1964)
- Heating degree days
- 40
- Cooling degree days
- 104
Little America in September
Highs average 71°22° and lows 44°6°, with 1.1 in28 mm of precipitation and 0.3 in0.8 cm of snow in a typical September.
- Record high
- 94°34° (2022)
- Record low
- 5°−15° (1965)
- Heating degree days
- 242
- Cooling degree days
- 14
Little America in OctoberThis month
Highs average 57°14° and lows 31°0°, with 0.73 in19 mm of precipitation and 1.1 in2.8 cm of snow in a typical October.
- Record high
- 82°28° (1974)
- Record low
- −19°−28° (2019)
- Heating degree days
- 650
- Cooling degree days
- 0
Little America in November
Highs average 41°5° and lows 21°−6°, with 0.47 in12 mm of precipitation and 6 in14 cm of snow in a typical November.
- Record high
- 67°19° (2020)
- Record low
- −16°−27° (1979)
- Heating degree days
- 1020
- Cooling degree days
- 0
Little America in December
Highs average 31°0° and lows 12°−11°, with 0.24 in6.1 mm of precipitation and 5 in12 cm of snow in a typical December.
- Record high
- 60°16° (1969)
- Record low
- −40° (1990)
- Heating degree days
- 1339
- Cooling degree days
- 0