Gardner climate — normals and trends
Gardner (United States) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.8 °C and it receives 1,125 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 (21.8 °C on average) and the coldest is January (-4.5 °C). Rainfall peaks in December.
Gardner averages 125 frost days, 15 hot days (≥ 30 °C) and 125 rainy days per year.
Gardner 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 134 to 116 per year over the period.
The hottest day of the period reached 38.0 °C (on 10 June 2008) and the coldest -27.1 °C (on 20 December 1942).
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
GardnerMassachusetts
- coords
- 42.58°, -72.00°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.8°C
Average daily high
13.5°C
Average daily low
4.3°C
Annual rainfall
1,125mm
Sunshine / day
8.6h
Mean relative humidity
70%
Average peak wind
17.0km/h
Seasonal range
26.3°C
Frost days (< 0 °C)
125 d/yr
Hot days (≥ 30 °C)
15 d/yr
Rainy days (≥ 1 mm)
125 d/yr
Annual snowfall
135.9 cm
Average feels-like high
11.3 °C
Average feels-like low
1.2 °C
Average peak gust
40.6 km/h
Tropical nights (≥ 20 °C)
11 d/yr
Solar radiation
14.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.44 · 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
38.0 °C
10 June 2008
Coldest day
-27.1 °C
20 December 1942
Wettest day
165 mm
19 August 1955
Windiest day
51.7 km/h
31 August 1954
Strongest gust
126.0 km/h
25 November 1950
Hottest feels-like
42.4 °C
1 July 2018
Coldest feels-like
-33.8 °C
20 December 1942
Snowiest day
37.2 cm
14 March 2023
Sunniest day
14.8 h
16 June 2020
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -0.8 °C | -0.4 °C | 47 mm | -41 mm |
| Feb | 0.4 °C | -0.6 °C | 90 mm | +6 mm |
| Mar | 9.4 °C | +3.6 °C | 94 mm | -6 mm |
| Apr | 14.5 °C | +1.9 °C | 110 mm | +12 mm |
| May | 18.6 °C | -0.3 °C | 231 mm | +135 mm |
| Jun | 24.8 °C | +0.8 °C | 75 mm | -20 mm |
| Jul | 29.0 °C | +2.1 °C | 86 mm | -7 mm |
| Aug | 26.3 °C | +0.5 °C | 31 mm | -62 mm |
| Sep | 23.4 °C | +1.9 °C | 73 mm | -15 mm |
| Oct | 16.0 °C | +0.8 °C | 101 mm | +11 mm |
| Nov | 8.0 °C | -0.5 °C | 67 mm | -30 mm |
| Dec | 0.6 °C | -1.5 °C | 87 mm | -14 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 Gardner?
Gardner has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.8 °C and it receives 1,125 mm of precipitation per year.
What is the hottest day ever recorded in Gardner?
The hottest day measured in Gardner between 1940 and 2025 was 10 June 2008, reaching 38.0 °C.
What is the coldest day in Gardner?
The coldest day measured in Gardner between 1940 and 2025 was 20 December 1942, at -27.1 °C.
Does it snow in Gardner?
Yes. Gardner gets on average 135.9 cm of snow per year and has around 125 frost days.
Has the climate of Gardner warmed?
Yes: Gardner warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Gardner?
The wettest day measured in Gardner between 1940 and 2025 was 19 August 1955, with 165 mm of rain in 24 hours.
What was the windiest day in Gardner?
The windiest day measured in Gardner between 1940 and 2025 was 31 August 1954, with winds reaching 51.7 km/h.
What is the warmest month in Gardner?
The warmest month in Gardner is July (21.8 °C on average); the coldest is January (-4.5 °C).
How much does it rain in Gardner?
Gardner receives on average 1,125 mm of precipitation per year, spread over about 125 rainy days.
Is it sunny in Gardner?
Gardner gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.
What is the biggest single-day snowfall in Gardner?
The heaviest 24-hour snowfall measured in Gardner between 1940 and 2025 was 14 March 2023, with 37.2 cm.
Are there tropical nights in Gardner?
Yes: Gardner has on average 11 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Gardner?
In Gardner, between 1940 and 2025, the highest apparent temperature reached 42.4 °C on 1 July 2018, and the lowest was -33.8 °C on 20 December 1942.
Compare Gardner with another city
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Nearby cities
The climate around Gardner