Windsor weather by month
What a typical year looks like in Windsor, Colorado: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at FORT COLLINS, 18 km from Windsor; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 15.9 in403 mm
- Snow a year
- 51 in131 cm
- Last spring freeze
- May 3
- First fall freeze
- Oct 7
- Heating degree days
- 5,797
- Cooling degree days
- 625
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 0°−18° (heating, 99%) and 96°36° (cooling, 1%).
Month by month
Windsor in January
Highs average 45°7° and lows 18°−8°, with 0.41 in10 mm of precipitation and 7 in17 cm of snow in a typical January.
- Record high
- 75°24° (2015)
- Record low
- −38°−39° (1930)
- Heating degree days
- 1034
- Cooling degree days
- 0
Windsor in February
Highs average 47°8° and lows 21°−6°, with 0.47 in12 mm of precipitation and 8 in19 cm of snow in a typical February.
- Record high
- 77°25° (2017)
- Record low
- −41° (1951)
- Heating degree days
- 875
- Cooling degree days
- 0
Windsor in March
Highs average 56°14° and lows 29°−2°, with 1.3 in33 mm of precipitation and 9 in24 cm of snow in a typical March.
- Record high
- 91°33° (2026)
- Record low
- −31°−35° (1943)
- Heating degree days
- 699
- Cooling degree days
- 0
Windsor in April
Highs average 63°17° and lows 35°2°, with 2.1 in53 mm of precipitation and 6 in16 cm of snow in a typical April.
- Record high
- 89°32° (1992)
- Record low
- −10°−23° (1945)
- Heating degree days
- 482
- Cooling degree days
- 0
Windsor in May
Highs average 71°22° and lows 44°7°, with 2.7 in69 mm of precipitation and 1.6 in4.1 cm of snow in a typical May.
- Record high
- 97°36° (2000)
- Record low
- 12°−11° (1917)
- Heating degree days
- 248
- Cooling degree days
- 16
Windsor in June
Highs average 82°28° and lows 53°12°, with 1.9 in48 mm of precipitation in a typical June.
- Record high
- 102°39° (1954)
- Record low
- 29°−2° (1947)
- Heating degree days
- 46
- Cooling degree days
- 115
Windsor in July
Highs average 87°31° and lows 59°15°, with 1.6 in41 mm of precipitation in a typical July.
- Record high
- 103°39° (2005)
- Record low
- 36°2° (1903)
- Heating degree days
- 4
- Cooling degree days
- 253
Windsor in August
Highs average 85°29° and lows 57°14°, with 1.5 in37 mm of precipitation in a typical August.
- Record high
- 102°39° (2026)
- Record low
- 32°0° (1910)
- Heating degree days
- 10
- Cooling degree days
- 189
Windsor in September
Highs average 77°25° and lows 48°9°, with 1.4 in36 mm of precipitation and 0.7 in1.8 cm of snow in a typical September.
- Record high
- 99°37° (2019)
- Record low
- 18°−8° (1985)
- Heating degree days
- 120
- Cooling degree days
- 51
Windsor in OctoberThis month
Highs average 64°18° and lows 36°2°, with 1.3 in32 mm of precipitation and 4 in10 cm of snow in a typical October.
- Record high
- 90°32° (2026)
- Record low
- −8°−22° (1905)
- Heating degree days
- 459
- Cooling degree days
- 1
Windsor in November
Highs average 53°11° and lows 26°−3°, with 0.74 in19 mm of precipitation and 8 in19 cm of snow in a typical November.
- Record high
- 81°27° (2006)
- Record low
- −21°−29° (1916)
- Heating degree days
- 771
- Cooling degree days
- 0
Windsor in December
Highs average 44°7° and lows 18°−8°, with 0.47 in12 mm of precipitation and 8 in19 cm of snow in a typical December.
- Record high
- 76°24° (1939)
- Record low
- −35°−37° (1919)
- Heating degree days
- 1049
- Cooling degree days
- 0
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