Farmington, NH climate
Farmington has cold, snowy winters and pleasant summers, with plenty of rain. A typical July afternoon reaches 81°, a January night drops to 13°, and about 39 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Farmington feels like
Winter
Spring
Summer
Fall
Farmington 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 | 31° | 13° | 3.3" | 10.8" | 9 | 19 | 13° – 29° |
| February | 34° | 14° | 3.2" | 9.1" | 8 | 18 | 10° – 30° |
| March | 43° | 22° | 4.1" | 6.8" | 9 | 14 | 25° – 42° |
| April | 56° | 33° | 4.2" | 1.8" | 11 | 1 | 40° – 49° |
| May | 68° | 44° | 3.8" | 0 | 12 | 0 | 50° – 61° |
| June | 76° | 53° | 4.3" | 0 | 12 | 0 | 61° – 68° |
| July | 81° | 59° | 4.2" | 0 | 11 | 0 | 66° – 73° |
| August | 80° | 57° | 3.8" | 0 | 10 | 0 | 65° – 71° |
| September | 72° | 49° | 3.9" | 0 | 10 | 0 | 57° – 64° |
| October | 59° | 38° | 4.9" | 0.2" | 10 | 0 | 45° – 55° |
| November | 47° | 29° | 4.1" | 1.3" | 11 | 1 | 33° – 43° |
| December | 37° | 20° | 4.3" | 8.9" | 11 | 11 | 22° – 37° |
| Year | 57° | 36° | 48.0" | 38.9" | 121 | 64 |
“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 Farmington
Farmington gets 48 inches of rain and melted snow a year. October is the wettest month and February the driest. Rain or snow falls on about 121 days a year. Snow covers the ground about 64 days of the year.
About 161 frost-free days a year
In half of years the last 32° night comes by April 30 and the first one by October 9. That leaves about 161 frost-free days for gardens, shorter than 70% of U.S. towns.
Heating and cooling a home in Farmington
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Farmington, 93% of that work is heating and 7% 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.
Farmington and its neighbors
Farmington borders 6 towns with climate data. January nights across them vary by 1.3°. New Durham has the coldest January nights (12°) and Rochester the hottest July afternoons (82°). Farmington’s January low is 13° and its July high 81°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Farmington 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 Farmington averaged 1.6° warmer than the 1900s. The biggest change is in December (+3.2°). The shift is larger than in 77% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Farmington’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 10° to 30°. August is the most reliable, staying within 6°.
Common questions about Farmington’s climate
What is the coldest month in Farmington?
January, with a typical high of 31° and a low of 13°.
What is the hottest month in Farmington?
July, with a typical high of 81° and a low of 59°. About 11 days a year reach 90°.
How much snow does Farmington get?
About 39 inches in a normal winter, most of it in January.
When is the first frost in Farmington?
In half of years the first 32° night comes by October 9, and the last spring frost by April 30.
What is the rainiest month in Farmington?
October, with 4.9 inches of rain and melted snow. The year totals 48 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Farmington itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Durham, NH (16 mi, snow) and Rochester Skyhaven Airport, NH (9 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.