Longmeadow climate — normals and trends
Longmeadow (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 9.9 °C and it receives 1,091 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (22.6 °C on average) and the coldest is January (-3.0 °C). Rainfall peaks in December.
Longmeadow averages 113 frost days, 21 hot days (≥ 30 °C) and 120 rainy days per year.
Longmeadow has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The number of frost days there went from about 123 to 103 per year over the period.
The hottest day of the period reached 38.4 °C (on 22 July 2011) and the coldest -27.9 °C (on 16 February 1943).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
LongmeadowMassachusetts
- coords
- 42.05°, -72.58°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.9°C
Average daily high
14.8°C
Average daily low
5.3°C
Annual rainfall
1,091mm
Sunshine / day
8.7h
Mean relative humidity
69%
Average peak wind
16.1km/h
Seasonal range
25.6°C
Frost days (< 0 °C)
113 d/yr
Hot days (≥ 30 °C)
21 d/yr
Rainy days (≥ 1 mm)
120 d/yr
Annual snowfall
101.3 cm
Average feels-like high
12.9 °C
Average feels-like low
2.6 °C
Average peak gust
38.8 km/h
Tropical nights (≥ 20 °C)
17 d/yr
Solar radiation
14.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.42 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
38.4 °C
22 July 2011
Coldest day
-27.9 °C
16 February 1943
Wettest day
168 mm
19 August 1955
Windiest day
46.7 km/h
25 November 1950
Strongest gust
135.4 km/h
25 November 1950
Hottest feels-like
43.3 °C
26 June 1952
Coldest feels-like
-32.6 °C
16 February 1943
Snowiest day
29.9 cm
9 February 1969
Sunniest day
14.7 h
15 June 2010
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 0.7 °C | -0.5 °C | 42 mm | -43 mm |
| Feb | 2.1 °C | -0.5 °C | 78 mm | -3 mm |
| Mar | 10.9 °C | +3.5 °C | 101 mm | +4 mm |
| Apr | 15.8 °C | +1.8 °C | 89 mm | -5 mm |
| May | 19.6 °C | -0.4 °C | 216 mm | +122 mm |
| Jun | 25.9 °C | +1.0 °C | 59 mm | -29 mm |
| Jul | 29.2 °C | +1.4 °C | 95 mm | +9 mm |
| Aug | 26.8 °C | +0.1 °C | 48 mm | -46 mm |
| Sep | 24.1 °C | +1.5 °C | 80 mm | -9 mm |
| Oct | 16.9 °C | +0.4 °C | 102 mm | +10 mm |
| Nov | 9.4 °C | -0.5 °C | 55 mm | -39 mm |
| Dec | 2.2 °C | -1.4 °C | 86 mm | -11 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Longmeadow?
Longmeadow has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 9.9 °C and it receives 1,091 mm of precipitation per year.
What is the hottest day ever recorded in Longmeadow?
The hottest day measured in Longmeadow between 1940 and 2025 was 22 July 2011, reaching 38.4 °C.
What is the coldest day in Longmeadow?
The coldest day measured in Longmeadow between 1940 and 2025 was 16 February 1943, at -27.9 °C.
Does it snow in Longmeadow?
Yes. Longmeadow gets on average 101.3 cm of snow per year and has around 113 frost days.
Has the climate of Longmeadow warmed?
Yes: Longmeadow warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Longmeadow?
The wettest day measured in Longmeadow between 1940 and 2025 was 19 August 1955, with 168 mm of rain in 24 hours.
What was the windiest day in Longmeadow?
The windiest day measured in Longmeadow between 1940 and 2025 was 25 November 1950, with winds reaching 46.7 km/h.
What is the warmest month in Longmeadow?
The warmest month in Longmeadow is July (22.6 °C on average); the coldest is January (-3.0 °C).
How much does it rain in Longmeadow?
Longmeadow receives on average 1,091 mm of precipitation per year, spread over about 120 rainy days.
Is it sunny in Longmeadow?
Longmeadow gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.
What is the biggest single-day snowfall in Longmeadow?
The heaviest 24-hour snowfall measured in Longmeadow between 1940 and 2025 was 9 February 1969, with 29.9 cm.
Are there tropical nights in Longmeadow?
Yes: Longmeadow has on average 17 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Longmeadow?
In Longmeadow, between 1940 and 2025, the highest apparent temperature reached 43.3 °C on 26 June 1952, and the lowest was -32.6 °C on 16 February 1943.
Compare Longmeadow with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Longmeadow