Carter weather by month
What a typical year looks like in Carter, Wyoming: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Mountain View, 21 km from Carter; records cover 1966–2026.
The year at a glance
- Precipitation a year
- 11 in280 mm
- Snow a year
- 64 in162 cm
- Last spring freeze
- Jun 11
- First fall freeze
- Sep 13
- Heating degree days
- 8,848
- Cooling degree days
- 45
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −8°−22° (heating, 99%) and 88°31° (cooling, 1%).
Month by month
Carter in January
Highs average 32°0° and lows 11°−12°, with 0.61 in15 mm of precipitation and 9 in23 cm of snow in a typical January.
- Record high
- 57°14° (1974)
- Record low
- −26°−32° (1974)
- Heating degree days
- 1350
- Cooling degree days
- 0
Carter in February
Highs average 34°1° and lows 11°−12°, with 0.56 in14 mm of precipitation and 9 in23 cm of snow in a typical February.
- Record high
- 62°17° (1982)
- Record low
- −33°−36° (1989)
- Heating degree days
- 1193
- Cooling degree days
- 0
Carter in March
Highs average 44°7° and lows 20°−7°, with 0.76 in19 mm of precipitation and 9 in24 cm of snow in a typical March.
- Record high
- 78°26° (2026)
- Record low
- −22°−30° (1969)
- Heating degree days
- 1034
- Cooling degree days
- 0
Carter in April
Highs average 52°11° and lows 25°−4°, with 1.1 in28 mm of precipitation and 8 in19 cm of snow in a typical April.
- Record high
- 79°26° (1992)
- Record low
- −6°−21° (2023)
- Heating degree days
- 789
- Cooling degree days
- 0
Carter in May
Highs average 63°17° and lows 33°0°, with 1.4 in35 mm of precipitation and 3 in8 cm of snow in a typical May.
- Record high
- 87°31° (2003)
- Record low
- 13°−11° (2013)
- Heating degree days
- 536
- Cooling degree days
- 0
Carter in June
Highs average 73°23° and lows 40°4°, with 0.91 in23 mm of precipitation and 0.2 in0.5 cm of snow in a typical June.
- Record high
- 92°33° (1988)
- Record low
- 22°−6° (1976)
- Heating degree days
- 265
- Cooling degree days
- 4
Carter in July
Highs average 80°27° and lows 47°8°, with 1.1 in28 mm of precipitation in a typical July.
- Record high
- 94°34° (2002)
- Record low
- 30°−1° (1997)
- Heating degree days
- 82
- Cooling degree days
- 26
Carter in August
Highs average 78°26° and lows 45°7°, with 0.82 in21 mm of precipitation in a typical August.
- Record high
- 92°33° (1979)
- Record low
- 28°−2° (1993)
- Heating degree days
- 118
- Cooling degree days
- 14
Carter in September
Highs average 70°21° and lows 37°3°, with 1.3 in33 mm of precipitation and 1 in2.5 cm of snow in a typical September.
- Record high
- 93°34° (2017)
- Record low
- 9°−13° (1985)
- Heating degree days
- 343
- Cooling degree days
- 1
Carter in OctoberThis month
Highs average 57°14° and lows 28°−2°, with 0.98 in25 mm of precipitation and 6 in14 cm of snow in a typical October.
- Record high
- 82°28° (1974)
- Record low
- −16°−27° (2020)
- Heating degree days
- 701
- Cooling degree days
- 0
Carter in November
Highs average 41°5° and lows 17°−8°, with 0.76 in19 mm of precipitation and 10 in25 cm of snow in a typical November.
- Record high
- 74°23° (1975)
- Record low
- −19°−28° (1979)
- Heating degree days
- 1072
- Cooling degree days
- 0
Carter in December
Highs average 31°0° and lows 11°−12°, with 0.79 in20 mm of precipitation and 10 in24 cm of snow in a typical December.
- Record high
- 62°17° (1980)
- Record low
- −41° (1990)
- Heating degree days
- 1365
- Cooling degree days
- 0