Greenfield weather by month
What a typical year looks like in Greenfield, Massachusetts: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Greenfield No. 3, 5 km from Greenfield; records cover 2000–2026.
The year at a glance
- Precipitation a year
- 49.4 in1255 mm
- Snow a year
- Rare
- Last spring freeze
- May 5
- First fall freeze
- Oct 13
- Heating degree days
- 6,684
- Cooling degree days
- 517
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −5°−21° (heating, 99%) and 93°34° (cooling, 1%).
Month by month
Greenfield in January
Highs average 33°1° and lows 15°−10°, with 3.5 in89 mm of precipitation in a typical January.
- Record high
- 71°22° (2007)
- Record low
- −17°−27° (2018)
- Heating degree days
- 1272
- Cooling degree days
- 0
Greenfield in February
Highs average 37°3° and lows 14°−10°, with 3.1 in78 mm of precipitation in a typical February.
- Record high
- 76°24° (2018)
- Record low
- −17°−27° (2015)
- Heating degree days
- 1106
- Cooling degree days
- 0
Greenfield in March
Highs average 45°7° and lows 23°−5°, with 3.9 in100 mm of precipitation in a typical March.
- Record high
- 83°28° (2012)
- Record low
- −8°−22° (2015)
- Heating degree days
- 952
- Cooling degree days
- 0
Greenfield in April
Highs average 59°15° and lows 34°1°, with 3.8 in97 mm of precipitation in a typical April.
- Record high
- 94°34° (2002)
- Record low
- 13°−11° (2016)
- Heating degree days
- 560
- Cooling degree days
- 2
Greenfield in May
Highs average 70°21° and lows 45°7°, with 4 in101 mm of precipitation in a typical May.
- Record high
- 95°35° (2026)
- Record low
- 24°−4° (2002)
- Heating degree days
- 257
- Cooling degree days
- 21
Greenfield in June
Highs average 78°26° and lows 54°12°, with 4.8 in123 mm of precipitation in a typical June.
- Record high
- 97°36° (2025)
- Record low
- 34°1° (2001)
- Heating degree days
- 60
- Cooling degree days
- 90
Greenfield in July
Highs average 83°28° and lows 59°15°, with 4.1 in103 mm of precipitation in a typical July.
- Record high
- 98°37° (2002)
- Record low
- 39°4° (2007)
- Heating degree days
- 10
- Cooling degree days
- 196
Greenfield in August
Highs average 81°27° and lows 57°14°, with 4.7 in119 mm of precipitation in a typical August.
- Record high
- 101°38° (2001)
- Record low
- 35°2° (2008)
- Heating degree days
- 21
- Cooling degree days
- 151
Greenfield in September
Highs average 74°23° and lows 50°10°, with 4.2 in108 mm of precipitation in a typical September.
- Record high
- 93°34° (2010)
- Record low
- 26°−3° (2000)
- Heating degree days
- 140
- Cooling degree days
- 55
Greenfield in OctoberThis month
Highs average 62°17° and lows 39°4°, with 4.7 in120 mm of precipitation in a typical October.
- Record high
- 85°29° (2001)
- Record low
- 9°−13° (2000)
- Heating degree days
- 454
- Cooling degree days
- 2
Greenfield in November
Highs average 50°10° and lows 29°−2°, with 3.8 in97 mm of precipitation in a typical November.
- Record high
- 79°26° (2024)
- Record low
- 4°−16° (2018)
- Heating degree days
- 770
- Cooling degree days
- 0
Greenfield in December
Highs average 40°4° and lows 21°−6°, with 4.7 in120 mm of precipitation in a typical December.
- Record high
- 70°21° (2001)
- Record low
- −8°−22° (2025)
- Heating degree days
- 1082
- Cooling degree days
- 0