Belchertown, Massachusetts climate: Normal weather by month, frost dates and records
Belchertown's normal year runs from 15°F January nights to 82°F July afternoons, with 47.5 inches of precipitation and 48 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 8.7°C, January lows of −9°C, July highs of 28°C, 1,207 mm of precipitation a year.
- NOAA stationBelchertown
- Station IDUSC00190562
- Location42.28°N 72.35°W
- Elevation550 ft (168 m)
- From the center3 miles
- Population (town)15,372
- Census place2,299
On October 22, the normal high in Belchertown is 58°F and the normal low 37°F, and the chance of measurable rain or snow is 35%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Belchertown.
- Jan 33° 15°
- Feb 35° 15°
- Mar 44° 24°
- Apr 57° 34°
- May 68° 45°
- Jun 77° 54°
- Jul 82° 60°
- Aug 80° 58°
- Sep 73° 52°
- Oct 60° 40°
- Nov 49° 31°
- Dec 38° 22°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Belchertown each month?
July is the warmest month, with normal highs of 82°F; January the coldest, with normal lows of 15°F. The most precipitation falls in August (4.78 in), the least in February (3.09 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 33°F | 15°F | 24.2°F | 3.46 | 12.3 | 11 | <1 | 29 | 9 h 20 min |
| February | 35°F | 15°F | 25.2°F | 3.09 | 13.7 | 10 | <1 | 27 | 10 h 30 min |
| March | 44°F | 24°F | 33.7°F | 3.71 | 8.8 | 11 | <1 | 24 | 11 h 50 min |
| April | 57°F | 34°F | 45.2°F | 3.68 | 1.4 | 11 | <1 | 13 | 13 h 20 min |
| May | 68°F | 45°F | 56.5°F | 3.57 | 0.0 | 13 | <1 | 1 | 14 h 30 min |
| June | 77°F | 54°F | 65.5°F | 4.21 | 0.0 | 12 | 1 | <1 | 15 h 10 min |
| July | 82°F | 60°F | 70.8°F | 4.21 | 0.0 | 11 | 4 | <1 | 15 h |
| August | 80°F | 58°F | 69.0°F | 4.78 | 0.0 | 11 | 2 | <1 | 14 h |
| September | 73°F | 52°F | 62.1°F | 4.53 | 0.0 | 10 | 1 | <1 | 12 h 30 min |
| October | 60°F | 40°F | 50.0°F | 4.78 | 0.2 | 11 | <1 | 5 | 11 h 10 min |
| November | 49°F | 31°F | 39.6°F | 3.48 | 1.5 | 10 | <1 | 18 | 9 h 50 min |
| December | 38°F | 22°F | 29.9°F | 4.01 | 9.6 | 11 | <1 | 26 | 9 h 10 min |
| Year (annual) | 58°F | 37°F | 47.7°F | 47.51 | 47.5 | 132 | 8 | 143 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 1°C | −9°C | −4.3°C | 88 mm | 31 cm |
| February | 2°C | −9°C | −3.8°C | 78 mm | 35 cm |
| March | 7°C | −5°C | 0.9°C | 94 mm | 22 cm |
| April | 14°C | 1°C | 7.3°C | 93 mm | 4 cm |
| May | 20°C | 7°C | 13.6°C | 91 mm | 0 cm |
| June | 25°C | 12°C | 18.6°C | 107 mm | 0 cm |
| July | 28°C | 15°C | 21.6°C | 107 mm | 0 cm |
| August | 27°C | 14°C | 20.6°C | 121 mm | 0 cm |
| September | 23°C | 11°C | 16.7°C | 115 mm | 0 cm |
| October | 16°C | 4°C | 10.0°C | 121 mm | 1 cm |
| November | 9°C | −1°C | 4.2°C | 88 mm | 4 cm |
| December | 3°C | −6°C | −1.2°C | 102 mm | 24 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00190562; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Belchertown?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, September has the fewest days with rain (10).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00190562.
When is the last frost in Belchertown?
In Belchertown, the last spring frost (32°F) comes after May 3 in half of years and after May 16 in one year in ten; the first autumn frost comes before October 14 in half of years and before October 1 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 31 year in 10 after May 16; 9 in 10 after April 21
- First autumn frost, half of years before
- October 141 year in 10 before October 1; 9 in 10 before October 29
NOAA puts the median frost-free season at 164 days, and the season without a hard freeze (28°F) at 189 days.
A hard freeze (28°F) comes after April 20 in half of springs and before October 27 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Belchertown in zone 6a in ZIP code 01007, the nearest ZIP area.
Frost dates for every NOAA station in Massachusetts · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00190562; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Belchertown?
In a normal year in Belchertown, 8 days a year reach 90°F, 143 nights fall to 32°F or colder and 132 days bring measurable precipitation.
- Days at 90°F or more
- 8a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 143a normal year
- Days that stay below freezing
- 38high of 32°F or less
- Days with 0.01 inch of precipitation
- 132a normal year
- Days with 1 inch of snow or more
- 15a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00190562.
How sunny is Belchertown?
Over a year 71% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Belchertown, 3.8 kWh per square metre a day. August is the sunniest month (77%) and December the cloudiest (62%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 66% | 1.8 |
| February | 67% | 2.6 |
| March | 68% | 3.7 |
| April | 68% | 4.7 |
| May | 68% | 5.3 |
| June | 71% | 5.7 |
| July | 77% | 6.0 |
| August | 77% | 5.3 |
| September | 76% | 4.3 |
| October | 67% | 2.7 |
| November | 68% | 1.9 |
| December | 62% | 1.4 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Belchertown need?
A normal year in Belchertown brings 6,774 heating degree days, 26% more than the median U.S. place (5,373), and 488 cooling degree days, 46% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,467 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,265 | 0 |
| February | 1,113 | 0 |
| March | 970 | 0 |
| April | 597 | 2 |
| May | 279 | 17 |
| June | 67 | 82 |
| July | 11 | 190 |
| August | 18 | 144 |
| September | 136 | 51 |
| October | 466 | 2 |
| November | 764 | 0 |
| December | 1,088 | 0 |
| Year (annual) | 6,774 | 488 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00190562. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Belchertown been warmer than normal lately?
2025 averaged 48.5°F, 0.8°F above the 1991-2020 normal of 47.7°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 49.5°F | +1.8°F | 52.01 | 27.0 |
| 2022 | 49.2°F | +1.5°F | 48.53 | 40.0 |
| 2023 | 50.6°F | +2.9°F | 53.48 | 21.0 |
| 2024 | 50.5°F | +2.8°F | 42.09 | 28.0 |
| 2025 | 48.5°F | +0.8°F | 45.09 | 34.0 |
Source: observed years: ACIS, station USC00190562. A year counts only with all twelve months complete.
How does Belchertown's climate compare?
Belchertown is warmer than 4 of the other 34 places with their own NOAA record in Massachusetts, and wetter than 15. Across the 7,247 U.S. stations with normals, its annual mean of 47.7°F is warmer than 31%.
In the Köppen classification computed from these normals, Belchertown is Dfb: continental, no dry season, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Belchertown share this climate record?
Ware has no NOAA station with 1991-2020 normals of its own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Ware, MA10,142 people · 6 mi E
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Belchertown's climate
What is the coldest month in Belchertown?
January, with a normal high of 33°F and a normal low of 15°F. The warmest is July (82°F by day, 60°F at night).
Does it snow in Belchertown?
Yes: 48 inches in a normal year, falling on 19 days with 0.1 inch or more, the most in February (13.7 inches).
What is the rainiest month in Belchertown?
August, with 4.78 in of precipitation in a normal year; the driest is February with 3.09 in.
What plant hardiness zone is Belchertown in?
The USDA's 2023 map puts Belchertown in zone 6a in ZIP code 01007, the nearest ZIP area.
How late can frost come in Belchertown?
In half of years the last 32°F night comes after May 3; in one year in ten it comes after May 16. Waiting until May 16 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Massachusetts climateThe statewide normals and every place in the state
- Amherst, MA12 miles from this station, 48.2°F a year
- Leverett #2, MA15 miles from this station, 47.4°F a year
- East Brimfield Lake, MA16 miles from this station, 48.3°F a year
- Barre, MA19 miles from this station, 47.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made