Gunnison weather by month
What a typical year looks like in Gunnison, Colorado: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at GUNNISON 3SW, 5 km from Gunnison; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 10.6 in269 mm
- Snow a year
- 46 in116 cm
- Last spring freeze
- Jun 16
- First fall freeze
- Sep 2
- Heating degree days
- 9,937
- Cooling degree days
- 16
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −24°−31° (heating, 99%) and 86°30° (cooling, 1%).
Month by month
Gunnison in January
Highs average 26°−3° and lows −6°−21°, with 0.82 in21 mm of precipitation and 11 in28 cm of snow in a typical January.
- Record high
- 55°13° (1971)
- Record low
- −45°−43° (1906)
- Heating degree days
- 1710
- Cooling degree days
- 0
Gunnison in February
Highs average 30°−1° and lows 1°−17°, with 0.67 in17 mm of precipitation and 9 in23 cm of snow in a typical February.
- Record high
- 61°16° (1904)
- Record low
- −44°−42° (1895)
- Heating degree days
- 1384
- Cooling degree days
- 0
Gunnison in March
Highs average 44°7° and lows 14°−10°, with 0.51 in13 mm of precipitation and 4 in11 cm of snow in a typical March.
- Record high
- 79°26° (2026)
- Record low
- −29°−34° (1903)
- Heating degree days
- 1114
- Cooling degree days
- 0
Gunnison in April
Highs average 56°13° and lows 23°−5°, with 0.74 in19 mm of precipitation and 4 in9 cm of snow in a typical April.
- Record high
- 78°26° (1930)
- Record low
- −14°−26° (1973)
- Heating degree days
- 770
- Cooling degree days
- 0
Gunnison in May
Highs average 66°19° and lows 30°−1°, with 1 in25 mm of precipitation and 0.6 in1.5 cm of snow in a typical May.
- Record high
- 87°31° (1936)
- Record low
- 7°−14° (1968)
- Heating degree days
- 527
- Cooling degree days
- 0
Gunnison in June
Highs average 76°25° and lows 37°3°, with 0.57 in14 mm of precipitation in a typical June.
- Record high
- 96°36° (1898)
- Record low
- 15°−9° (1919)
- Heating degree days
- 261
- Cooling degree days
- 1
Gunnison in July
Highs average 80°27° and lows 44°7°, with 1.3 in33 mm of precipitation in a typical July.
- Record high
- 95°35° (1932)
- Record low
- 23°−5° (1968)
- Heating degree days
- 108
- Cooling degree days
- 11
Gunnison in August
Highs average 77°25° and lows 43°6°, with 1.5 in37 mm of precipitation in a typical August.
- Record high
- 105°41° (1894)
- Record low
- 24°−4° (1962)
- Heating degree days
- 165
- Cooling degree days
- 4
Gunnison in September
Highs average 70°21° and lows 34°1°, with 1.2 in31 mm of precipitation and 0.2 in0.5 cm of snow in a typical September.
- Record high
- 92°33° (1983)
- Record low
- 9°−13° (1978)
- Heating degree days
- 392
- Cooling degree days
- 0
Gunnison in OctoberThis month
Highs average 60°15° and lows 22°−6°, with 0.73 in19 mm of precipitation and 1.2 in3 cm of snow in a typical October.
- Record high
- 82°28° (1938)
- Record low
- −11°−24° (2019)
- Heating degree days
- 752
- Cooling degree days
- 0
Gunnison in November
Highs average 44°6° and lows 11°−12°, with 0.65 in17 mm of precipitation and 5 in13 cm of snow in a typical November.
- Record high
- 75°24° (1893)
- Record low
- −26°−32° (1952)
- Heating degree days
- 1136
- Cooling degree days
- 0
Gunnison in December
Highs average 29°−2° and lows −3°−19°, with 0.93 in24 mm of precipitation and 10 in26 cm of snow in a typical December.
- Record high
- 62°17° (1939)
- Record low
- −47°−44° (1924)
- Heating degree days
- 1618
- Cooling degree days
- 0
UniColorado Heating & Cooling, a Denver HVAC installer
UniColorado Heating & Cooling installs heat pumps, furnaces and air conditioning across the Front Range. 12,000+ heat pumps installed since 2014.