Monson, MA climate
Monson has chilly, snowy winters and pleasant summers, with plenty of rain. A typical July afternoon reaches 82°, a January night drops to 16°, and about 43 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Monson feels like
Winter
Spring
Summer
Fall
Monson 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° | 16° | 3.5" | 11.5" | 11 | 20 | 16° – 32° |
| February | 37° | 18° | 3.1" | 12.0" | 9 | 19 | 14° – 35° |
| March | 46° | 26° | 4.0" | 8.7" | 11 | 12 | 29° – 45° |
| April | 58° | 35° | 3.9" | 0.8" | 11 | 1 | 42° – 51° |
| May | 69° | 45° | 3.6" | 0 | 13 | 0 | 52° – 62° |
| June | 77° | 55° | 4.5" | 0 | 12 | 0 | 63° – 69° |
| July | 82° | 60° | 4.1" | 0 | 11 | 0 | 67° – 75° |
| August | 81° | 59° | 4.5" | 0 | 10 | 0 | 66° – 74° |
| September | 73° | 51° | 4.3" | 0 | 9 | 0 | 59° – 66° |
| October | 62° | 40° | 4.8" | 0 | 10 | 0 | 46° – 58° |
| November | 50° | 31° | 3.7" | 0.7" | 10 | 1 | 36° – 45° |
| December | 39° | 23° | 4.3" | 9.3" | 11 | 12 | 24° – 41° |
| Year | 59° | 38° | 48.1" | 43.0" | 128 | 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 Monson
Monson 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 128 days a year. Snow covers the ground about 64 days of the year.
About 169 frost-free days a year
In half of years the last 32° night comes by April 28 and the first one by October 15. That leaves about 169 frost-free days for gardens, shorter than 62% of U.S. towns.
Heating and cooling a home in Monson
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Monson, 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.
Monson and its neighbors
Monson borders 5 towns with climate data. January nights across them vary by 1.1°. Palmer Town has the coldest January nights (16°) and Hampden the hottest July afternoons (84°). Monson’s January low is 16° and its July high 82°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Monson 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 Monson averaged 1.7° warmer than the 1900s. The biggest change is in December (+3.5°). The shift is larger than in 84% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Monson’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 14° to 35°. June is the most reliable, staying within 6°.
Common questions about Monson’s climate
What is the coldest month in Monson?
January, with a typical high of 35° and a low of 16°.
What is the hottest month in Monson?
July, with a typical high of 82° and a low of 60°. About 5 days a year reach 90°.
How much snow does Monson get?
About 43 inches in a normal winter, most of it in February.
When is the first frost in Monson?
In half of years the first 32° night comes by October 15, and the last spring frost by April 28.
What is the rainiest month in Monson?
October, with 4.8 inches of rain and melted snow. The year totals 48 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Monson itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Ware, MA (12 mi, snow) and East Brimfield Lake, MA (10 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.