Basalt weather by month
What a typical year looks like in Basalt, Colorado: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Aspen Pitkin County Airport Sardy Field, 22 km from Basalt; records cover 1998–2026.
The year at a glance
- Precipitation a year
- 14.9 in379 mm
- Snow a year
- Rare
- Last spring freeze
- Jun 8
- First fall freeze
- Sep 20
- Heating degree days
- 8,143
- Cooling degree days
- 88
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −9°−23° (heating, 99%) and 88°31° (cooling, 1%).
Month by month
Basalt in January
Highs average 35°1° and lows 9°−13°, with 1.1 in27 mm of precipitation in a typical January.
- Record high
- 62°17° (2006)
- Record low
- −18°−28° (2007)
- Heating degree days
- 1344
- Cooling degree days
- 0
Basalt in February
Highs average 38°3° and lows 12°−11°, with 0.9 in23 mm of precipitation in a typical February.
- Record high
- 60°16° (2025)
- Record low
- −26°−32° (2011)
- Heating degree days
- 1114
- Cooling degree days
- 0
Basalt in March
Highs average 46°8° and lows 21°−6°, with 1 in26 mm of precipitation in a typical March.
- Record high
- 77°25° (2026)
- Record low
- −16°−27° (2002)
- Heating degree days
- 977
- Cooling degree days
- 0
Basalt in April
Highs average 55°13° and lows 28°−2°, with 1.8 in46 mm of precipitation in a typical April.
- Record high
- 75°24° (2012)
- Record low
- 1°−17° (2008)
- Heating degree days
- 710
- Cooling degree days
- 0
Basalt in May
Highs average 65°18° and lows 35°2°, with 1.5 in39 mm of precipitation in a typical May.
- Record high
- 86°30° (2002)
- Record low
- 17°−8° (1999)
- Heating degree days
- 464
- Cooling degree days
- 0
Basalt in June
Highs average 77°25° and lows 42°6°, with 0.88 in22 mm of precipitation in a typical June.
- Record high
- 92°33° (2016)
- Record low
- 25°−4° (1999)
- Heating degree days
- 175
- Cooling degree days
- 13
Basalt in July
Highs average 82°28° and lows 48°9°, with 1.6 in42 mm of precipitation in a typical July.
- Record high
- 93°34° (2026)
- Record low
- 35°2° (2010)
- Heating degree days
- 40
- Cooling degree days
- 47
Basalt in August
Highs average 80°26° and lows 47°8°, with 1.5 in38 mm of precipitation in a typical August.
- Record high
- 91°33° (2003)
- Record low
- 32°0° (2004)
- Heating degree days
- 77
- Cooling degree days
- 26
Basalt in September
Highs average 72°22° and lows 40°4°, with 1.4 in36 mm of precipitation in a typical September.
- Record high
- 89°32° (2019)
- Record low
- 17°−8° (1999)
- Heating degree days
- 269
- Cooling degree days
- 2
Basalt in OctoberThis month
Highs average 60°15° and lows 29°−2°, with 1.3 in34 mm of precipitation in a typical October.
- Record high
- 80°27° (2015)
- Record low
- −5°−21° (2019)
- Heating degree days
- 640
- Cooling degree days
- 0
Basalt in November
Highs average 45°7° and lows 19°−7°, with 1 in26 mm of precipitation in a typical November.
- Record high
- 67°19° (1999)
- Record low
- −16°−27° (2010)
- Heating degree days
- 992
- Cooling degree days
- 0
Basalt in December
Highs average 34°1° and lows 9°−13°, with 0.82 in21 mm of precipitation in a typical December.
- Record high
- 59°15° (1998)
- Record low
- −21°−29° (2005)
- Heating degree days
- 1341
- 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.