New Fairfield, CT climate
New Fairfield has chilly, snowy winters and pleasant summers, with plenty of rain. A typical July afternoon reaches 83°, a January night drops to 17°, and about 49 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in New Fairfield feels like
Winter
Spring
Summer
Fall
New Fairfield weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 35° | 17° | 3.5" | 15.7" | 12 | 15 | 16° – 34° |
| February | 38° | 19° | 2.9" | 11.0" | 11 | 13 | 16° – 35° |
| March | 46° | 26° | 4.1" | 10.4" | 12 | 8 | 31° – 46° |
| April | 59° | 36° | 4.1" | 1.7" | 12 | 0 | 42° – 52° |
| May | 70° | 47° | 3.9" | 0 | 13 | 0 | 53° – 63° |
| June | 78° | 56° | 4.5" | 0 | 12 | 0 | 64° – 70° |
| July | 83° | 61° | 4.7" | 0 | 11 | 0 | 67° – 76° |
| August | 81° | 60° | 4.5" | 0 | 10 | 0 | 66° – 74° |
| September | 73° | 52° | 4.6" | 0 | 10 | 0 | 60° – 68° |
| October | 62° | 41° | 4.8" | 0 | 10 | 0 | 47° – 58° |
| November | 50° | 32° | 4.0" | 1.9" | 10 | 1 | 36° – 46° |
| December | 40° | 24° | 4.2" | 8.6" | 12 | 9 | 25° – 43° |
| Year | 59° | 39° | 49.6" | 49.3" | 134 | 46 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in New Fairfield
New Fairfield gets 50 inches of rain and melted snow a year. October is the wettest month and February the driest. Rain or snow falls on about 134 days a year. Snow covers the ground about 46 days of the year.
About 166 frost-free days a year
In half of years the last 32° night comes by May 1 and the first one by October 14. That leaves about 166 frost-free days for gardens, shorter than 64% of U.S. towns.
Heating and cooling a home in New Fairfield
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In New Fairfield, 91% of that work is heating and 9% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
New Fairfield and its neighbors
New Fairfield borders 5 towns with climate data. January nights across them vary by 1.4°. New Milford has the coldest January nights (17°) and Brookfield the hottest July afternoons (84°). New Fairfield’s January low is 17° and its July high 83°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How New Fairfield compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in New Fairfield averaged 1.7° warmer than the 1900s. The biggest change is in December (+3.2°). The shift is larger than in 84% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at New Fairfield’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 16° to 35°. June is the most reliable, staying within 6°.
Common questions about New Fairfield’s climate
What is the coldest month in New Fairfield?
January, with a typical high of 35° and a low of 17°.
What is the hottest month in New Fairfield?
July, with a typical high of 83° and a low of 61°. About 8 days a year reach 90°.
How much snow does New Fairfield get?
About 49 inches in a normal winter, most of it in January.
When is the first frost in New Fairfield?
In half of years the first 32° night comes by October 14, and the last spring frost by May 1.
What is the rainiest month in New Fairfield?
October, with 4.8 inches of rain and melted snow. The year totals 50 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for New Fairfield itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Danbury, CT (6 mi, snow) and Danbury Municipal Airport, CT (8 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.