Upton weather by month
What a typical year looks like in Upton, Wyoming: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Upton, 2 km from Upton; records cover 1909–2026.
The year at a glance
- Precipitation a year
- 16.2 in410 mm
- Snow a year
- 46 in118 cm
- Last spring freeze
- May 15
- First fall freeze
- Sep 20
- Heating degree days
- 7,876
- Cooling degree days
- 528
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −14°−26° (heating, 99%) and 98°37° (cooling, 1%).
Month by month
Upton in January
Highs average 33°0° and lows 10°−12°, with 0.45 in11 mm of precipitation and 8 in21 cm of snow in a typical January.
- Record high
- 65°18° (1989)
- Record low
- −45°−43° (1915)
- Heating degree days
- 1364
- Cooling degree days
- 0
Upton in February
Highs average 35°2° and lows 12°−11°, with 0.46 in12 mm of precipitation and 8 in21 cm of snow in a typical February.
- Record high
- 68°20° (1992)
- Record low
- −34°−37° (1917)
- Heating degree days
- 1165
- Cooling degree days
- 0
Upton in March
Highs average 47°8° and lows 22°−6°, with 0.82 in21 mm of precipitation and 6 in16 cm of snow in a typical March.
- Record high
- 86°30° (2026)
- Record low
- −29°−34° (1920)
- Heating degree days
- 947
- Cooling degree days
- 0
Upton in April
Highs average 56°13° and lows 30°−1°, with 1.8 in45 mm of precipitation and 5 in13 cm of snow in a typical April.
- Record high
- 88°31° (1989)
- Record low
- −11°−24° (1975)
- Heating degree days
- 668
- Cooling degree days
- 0
Upton in May
Highs average 65°19° and lows 40°4°, with 2.8 in72 mm of precipitation and 0.7 in1.8 cm of snow in a typical May.
- Record high
- 95°35° (1969)
- Record low
- 5°−15° (1954)
- Heating degree days
- 394
- Cooling degree days
- 5
Upton in June
Highs average 77°25° and lows 49°10°, with 2.6 in65 mm of precipitation and 0.1 in0.3 cm of snow in a typical June.
- Record high
- 105°41° (2021)
- Record low
- 26°−3° (1924)
- Heating degree days
- 122
- Cooling degree days
- 68
Upton in July
Highs average 87°31° and lows 57°14°, with 2.1 in54 mm of precipitation in a typical July.
- Record high
- 110°43° (1954)
- Record low
- 30°−1° (1971)
- Heating degree days
- 16
- Cooling degree days
- 227
Upton in August
Highs average 85°30° and lows 54°12°, with 1.4 in36 mm of precipitation in a typical August.
- Record high
- 104°40° (2026)
- Record low
- 24°−4° (2015)
- Heating degree days
- 34
- Cooling degree days
- 184
Upton in September
Highs average 75°24° and lows 44°7°, with 1.2 in30 mm of precipitation and 0.1 in0.3 cm of snow in a typical September.
- Record high
- 101°38° (1958)
- Record low
- 6°−14° (1926)
- Heating degree days
- 206
- Cooling degree days
- 43
Upton in OctoberThis month
Highs average 59°15° and lows 32°0°, with 1.5 in38 mm of precipitation and 3 in8 cm of snow in a typical October.
- Record high
- 91°33° (1914)
- Record low
- −10°−23° (2020)
- Heating degree days
- 614
- Cooling degree days
- 1
Upton in November
Highs average 44°6° and lows 20°−7°, with 0.58 in15 mm of precipitation and 6 in16 cm of snow in a typical November.
- Record high
- 85°29° (1924)
- Record low
- −26°−32° (1959)
- Heating degree days
- 1005
- Cooling degree days
- 0
Upton in December
Highs average 33°1° and lows 10°−12°, with 0.45 in11 mm of precipitation and 8 in21 cm of snow in a typical December.
- Record high
- 67°19° (2025)
- Record low
- −42°−41° (1983)
- Heating degree days
- 1341
- Cooling degree days
- 0