Green Mountain Falls weather by month
What a typical year looks like in Green Mountain Falls, Colorado: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at RUXTON PARK, 11 km from Green Mountain Falls; records cover 1959–2026.
The year at a glance
- Precipitation a year
- 23.9 in608 mm
- Snow a year
- 134 in339 cm
- Last spring freeze
- Jun 14
- First fall freeze
- Aug 22
- Heating degree days
- 8,583
- Cooling degree days
- 17
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −10°−23° (heating, 99%) and 81°27° (cooling, 1%).
Month by month
Green Mountain Falls in January
Highs average 39°4° and lows 13°−11°, with 0.74 in19 mm of precipitation and 13 in32 cm of snow in a typical January.
- Record high
- 62°17° (2015)
- Record low
- −35°−37° (1963)
- Heating degree days
- 1220
- Cooling degree days
- 0
Green Mountain Falls in February
Highs average 39°4° and lows 14°−10°, with 0.97 in25 mm of precipitation and 14 in35 cm of snow in a typical February.
- Record high
- 60°16° (1963)
- Record low
- −33°−36° (1985)
- Heating degree days
- 1078
- Cooling degree days
- 0
Green Mountain Falls in March
Highs average 45°7° and lows 20°−7°, with 1.9 in48 mm of precipitation and 26 in67 cm of snow in a typical March.
- Record high
- 69°21° (2026)
- Record low
- −21°−29° (1965)
- Heating degree days
- 1008
- Cooling degree days
- 0
Green Mountain Falls in April
Highs average 51°10° and lows 26°−4°, with 3.1 in80 mm of precipitation and 32 in82 cm of snow in a typical April.
- Record high
- 72°22° (2012)
- Record low
- −18°−28° (1983)
- Heating degree days
- 808
- Cooling degree days
- 0
Green Mountain Falls in May
Highs average 59°15° and lows 33°0°, with 2.6 in65 mm of precipitation and 10 in24 cm of snow in a typical May.
- Record high
- 81°27° (2000)
- Record low
- 3°−16° (1970)
- Heating degree days
- 584
- Cooling degree days
- 0
Green Mountain Falls in June
Highs average 71°21° and lows 42°6°, with 2.1 in54 mm of precipitation and 0.4 in1 cm of snow in a typical June.
- Record high
- 88°31° (2012)
- Record low
- 14°−10° (1975)
- Heating degree days
- 267
- Cooling degree days
- 6
Green Mountain Falls in July
Highs average 74°23° and lows 47°8°, with 3.9 in99 mm of precipitation in a typical July.
- Record high
- 89°32° (2000)
- Record low
- 24°−4° (1982)
- Heating degree days
- 156
- Cooling degree days
- 9
Green Mountain Falls in August
Highs average 72°22° and lows 45°7°, with 3.9 in100 mm of precipitation in a typical August.
- Record high
- 86°30° (1979)
- Record low
- 23°−5° (2004)
- Heating degree days
- 218
- Cooling degree days
- 2
Green Mountain Falls in September
Highs average 66°19° and lows 39°4°, with 1.9 in49 mm of precipitation and 1.8 in4.6 cm of snow in a typical September.
- Record high
- 84°29° (2001)
- Record low
- 4°−16° (1985)
- Heating degree days
- 376
- Cooling degree days
- 0
Green Mountain Falls in OctoberThis month
Highs average 56°13° and lows 30°−1°, with 1.2 in30 mm of precipitation and 10 in26 cm of snow in a typical October.
- Record high
- 76°24° (1991)
- Record low
- −10°−23° (2019)
- Heating degree days
- 690
- Cooling degree days
- 0
Green Mountain Falls in November
Highs average 46°8° and lows 20°−7°, with 0.85 in22 mm of precipitation and 13 in32 cm of snow in a typical November.
- Record high
- 69°21° (1990)
- Record low
- −25°−32° (1976)
- Heating degree days
- 968
- Cooling degree days
- 0
Green Mountain Falls in December
Highs average 39°4° and lows 13°−11°, with 0.76 in19 mm of precipitation and 14 in36 cm of snow in a typical December.
- Record high
- 64°18° (2001)
- Record low
- −28°−33° (1978)
- Heating degree days
- 1210
- Cooling degree days
- 0
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