Hartsel weather by month
What a typical year looks like in Hartsel, Colorado: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at ANTERO RESERVOIR, 9 km from Hartsel; records cover 1961–2026.
The year at a glance
- Precipitation a year
- 10.6 in268 mm
- Snow a year
- 49 in125 cm
- Last spring freeze
- Jun 24
- First fall freeze
- Aug 18
- Heating degree days
- 10,758
- Cooling degree days
- 0
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −30°−34° (heating, 99%) and 83°28° (cooling, 1%).
Month by month
Hartsel in January
Highs average 32°0° and lows −4°−20°, with 0.28 in7.1 mm of precipitation and 5 in14 cm of snow in a typical January.
- Record high
- 60°16° (2003)
- Record low
- −54°−48° (1962)
- Heating degree days
- 1592
- Cooling degree days
- 0
Hartsel in February
Highs average 34°1° and lows −1°−18°, with 0.36 in9.1 mm of precipitation and 6 in16 cm of snow in a typical February.
- Record high
- 58°14° (1996)
- Record low
- −51°−46° (1989)
- Heating degree days
- 1364
- Cooling degree days
- 0
Hartsel in March
Highs average 42°5° and lows 10°−12°, with 0.54 in14 mm of precipitation and 8 in21 cm of snow in a typical March.
- Record high
- 71°22° (2026)
- Record low
- −43°−42° (1965)
- Heating degree days
- 1208
- Cooling degree days
- 0
Hartsel in April
Highs average 49°9° and lows 19°−7°, with 0.67 in17 mm of precipitation and 9 in24 cm of snow in a typical April.
- Record high
- 72°22° (1992)
- Record low
- −29°−34° (1970)
- Heating degree days
- 934
- Cooling degree days
- 0
Hartsel in May
Highs average 59°15° and lows 27°−3°, with 1.2 in31 mm of precipitation and 4 in10 cm of snow in a typical May.
- Record high
- 81°27° (2002)
- Record low
- 0°−18° (1982)
- Heating degree days
- 679
- Cooling degree days
- 0
Hartsel in June
Highs average 70°21° and lows 34°1°, with 0.9 in23 mm of precipitation in a typical June.
- Record high
- 88°31° (2021)
- Record low
- 15°−9° (1975)
- Heating degree days
- 380
- Cooling degree days
- 0
Hartsel in July
Highs average 76°24° and lows 41°5°, with 2 in50 mm of precipitation in a typical July.
- Record high
- 88°31° (1980)
- Record low
- 23°−5° (1968)
- Heating degree days
- 216
- Cooling degree days
- 0
Hartsel in August
Highs average 73°23° and lows 39°4°, with 2.2 in55 mm of precipitation in a typical August.
- Record high
- 87°31° (2002)
- Record low
- 19°−7° (1964)
- Heating degree days
- 279
- Cooling degree days
- 0
Hartsel in September
Highs average 67°19° and lows 30°−1°, with 1 in26 mm of precipitation and 0.4 in1 cm of snow in a typical September.
- Record high
- 84°29° (2019)
- Record low
- 3°−16° (1965)
- Heating degree days
- 494
- Cooling degree days
- 0
Hartsel in OctoberThis month
Highs average 55°13° and lows 19°−7°, with 0.7 in18 mm of precipitation and 4 in11 cm of snow in a typical October.
- Record high
- 78°26° (1980)
- Record low
- −22°−30° (2019)
- Heating degree days
- 865
- Cooling degree days
- 0
Hartsel in November
Highs average 42°6° and lows 9°−13°, with 0.33 in8.4 mm of precipitation and 5 in12 cm of snow in a typical November.
- Record high
- 68°20° (1999)
- Record low
- −33°−36° (1972)
- Heating degree days
- 1185
- Cooling degree days
- 0
Hartsel in December
Highs average 32°0° and lows −2°−19°, with 0.37 in9.4 mm of precipitation and 7 in17 cm of snow in a typical December.
- Record high
- 60°16° (2021)
- Record low
- −49°−45° (1978)
- Heating degree days
- 1562
- Cooling degree days
- 0
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