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New Canaan, CT weather and climate

Fairfield County, CT · population 7,032 · about 308 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at New Canaan's own coordinates.

The year at a glance

Sunny days
200
clear or partly cloudy, per year
Precipitation
45 in
per year
Wet days
124
rain or snow per year
Snowfall
35 in
per year
Hot days
17
above 90 °F
Freezing nights
109
at or below 32 °F
Humidity
73%
average relative
Average temperature
53 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
20406080JanMarMayJulSepNovDaily high, Jan: 38 °FDaily high, Feb: 41 °FDaily high, Mar: 49 °FDaily high, Apr: 62 °FDaily high, May: 72 °FDaily high, Jun: 80 °FDaily high, Jul: 85 °FDaily high, Aug: 83 °FDaily high, Sep: 76 °FDaily high, Oct: 64 °FDaily high, Nov: 53 °FDaily high, Dec: 43 °FDaily low, Jan: 22 °FDaily low, Feb: 23 °FDaily low, Mar: 30 °FDaily low, Apr: 40 °FDaily low, May: 50 °FDaily low, Jun: 58 °FDaily low, Jul: 64 °FDaily low, Aug: 63 °FDaily low, Sep: 56 °FDaily low, Oct: 45 °FDaily low, Nov: 35 °FDaily low, Dec: 27 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high384149627280858376645343
Daily low222330405058646356453527

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.02.04.0JanMarMayJulSepNovNew Canaan, Jan: 3.4 inNew Canaan, Feb: 3.1 inNew Canaan, Mar: 4.2 inNew Canaan, Apr: 3.8 inNew Canaan, May: 3.5 inNew Canaan, Jun: 3.9 inNew Canaan, Jul: 3.7 inNew Canaan, Aug: 4.1 inNew Canaan, Sep: 3.9 inNew Canaan, Oct: 4.1 inNew Canaan, Nov: 3.3 inNew Canaan, Dec: 4.2 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
New Canaan3.43.14.23.83.53.93.74.13.94.13.34.2

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovNew Canaan, Jan: 17 daysNew Canaan, Feb: 16 daysNew Canaan, Mar: 16 daysNew Canaan, Apr: 15 daysNew Canaan, May: 15 daysNew Canaan, Jun: 15 daysNew Canaan, Jul: 19 daysNew Canaan, Aug: 18 daysNew Canaan, Sep: 17 daysNew Canaan, Oct: 19 daysNew Canaan, Nov: 17 daysNew Canaan, Dec: 16 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
New Canaan171616151515191817191716

Compare New Canaan with another city

Nearby cities and popular picks. Any two cities can be compared from the home page.

See weather for every covered Connecticut city

About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).