Canaan weather by month
What a typical year looks like in Canaan, Connecticut: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Norfolk 2 SW, 12 km from Canaan; records cover 1884–2026.
The year at a glance
- Precipitation a year
- 52.9 in1345 mm
- Snow a year
- 75 in190 cm
- Last spring freeze
- May 7
- First fall freeze
- Oct 13
- Heating degree days
- 7,312
- Cooling degree days
- 371
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −4°−20° (heating, 99%) and 88°31° (cooling, 1%).
Month by month
Canaan in January
Highs average 30°−1° and lows 14°−10°, with 4 in101 mm of precipitation and 18 in45 cm of snow in a typical January.
- Record high
- 62°17° (1950)
- Record low
- −22°−30° (1957)
- Heating degree days
- 1334
- Cooling degree days
- 0
Canaan in February
Highs average 32°0° and lows 15°−9°, with 3.3 in85 mm of precipitation and 18 in44 cm of snow in a typical February.
- Record high
- 70°21° (2018)
- Record low
- −25°−32° (1943)
- Heating degree days
- 1152
- Cooling degree days
- 0
Canaan in March
Highs average 40°5° and lows 23°−5°, with 4.2 in107 mm of precipitation and 15 in38 cm of snow in a typical March.
- Record high
- 81°27° (1945)
- Record low
- −11°−24° (1950)
- Heating degree days
- 1035
- Cooling degree days
- 0
Canaan in April
Highs average 54°12° and lows 34°1°, with 3.9 in100 mm of precipitation and 4 in10 cm of snow in a typical April.
- Record high
- 89°32° (2002)
- Record low
- 6°−14° (1954)
- Heating degree days
- 633
- Cooling degree days
- 3
Canaan in May
Highs average 65°19° and lows 45°7°, with 4.1 in105 mm of precipitation in a typical May.
- Record high
- 90°32° (2026)
- Record low
- 24°−4° (1885)
- Heating degree days
- 315
- Cooling degree days
- 16
Canaan in June
Highs average 73°23° and lows 55°13°, with 5 in126 mm of precipitation in a typical June.
- Record high
- 93°34° (2025)
- Record low
- 32°0° (1964)
- Heating degree days
- 98
- Cooling degree days
- 66
Canaan in July
Highs average 78°26° and lows 60°15°, with 4.8 in121 mm of precipitation in a typical July.
- Record high
- 94°34° (2026)
- Record low
- 41°5° (1885)
- Heating degree days
- 20
- Cooling degree days
- 143
Canaan in August
Highs average 76°25° and lows 58°15°, with 4.7 in119 mm of precipitation in a typical August.
- Record high
- 98°37° (2001)
- Record low
- 35°2° (1965)
- Heating degree days
- 38
- Cooling degree days
- 108
Canaan in September
Highs average 69°21° and lows 51°11°, with 4.9 in124 mm of precipitation in a typical September.
- Record high
- 93°34° (1953)
- Record low
- 26°−3° (1947)
- Heating degree days
- 185
- Cooling degree days
- 33
Canaan in OctoberThis month
Highs average 57°14° and lows 40°4°, with 5.1 in131 mm of precipitation and 1.4 in3.6 cm of snow in a typical October.
- Record high
- 81°27° (1986)
- Record low
- 17°−8° (1974)
- Heating degree days
- 526
- Cooling degree days
- 2
Canaan in November
Highs average 45°7° and lows 30°−1°, with 4.1 in103 mm of precipitation and 4 in11 cm of snow in a typical November.
- Record high
- 76°24° (2024)
- Record low
- 3°−16° (2018)
- Heating degree days
- 824
- Cooling degree days
- 0
Canaan in December
Highs average 35°1° and lows 21°−6°, with 4.9 in123 mm of precipitation and 15 in38 cm of snow in a typical December.
- Record high
- 67°19° (1998)
- Record low
- −23°−31° (1884)
- Heating degree days
- 1152
- Cooling degree days
- 0