Gloucester climate — normals and trends
Gloucester (Canada) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 6.6 °C and it receives 970 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 (20.9 °C on average) and the coldest is January (-9.6 °C). Rainfall peaks in July.
Gloucester averages 149 frost days, 12 hot days (≥ 30 °C) and 133 rainy days per year.
Gloucester has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The number of frost days there went from about 154 to 144 per year over the period.
The hottest day of the period reached 38.0 °C (on 1 August 1975) and the coldest -38.0 °C (on 15 January 1957).
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
GloucesterOntario
- coords
- 45.35°, -75.63°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
6.6°C
Average daily high
11.4°C
Average daily low
1.6°C
Annual rainfall
970mm
Sunshine / day
8.2h
Mean relative humidity
73%
Average peak wind
16.3km/h
Seasonal range
30.5°C
Frost days (< 0 °C)
149 d/yr
Hot days (≥ 30 °C)
12 d/yr
Rainy days (≥ 1 mm)
133 d/yr
Annual snowfall
141.9 cm
Average feels-like high
9.0 °C
Average feels-like low
-1.6 °C
Average peak gust
36.2 km/h
Tropical nights (≥ 20 °C)
6 d/yr
Solar radiation
13.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.22 · 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
1 August 1975
Coldest day
-38.0 °C
15 January 1957
Wettest day
91 mm
9 August 2024
Windiest day
45.1 km/h
10 March 2002
Strongest gust
105.1 km/h
13 November 1992
Hottest feels-like
41.9 °C
1 August 1975
Coldest feels-like
-43.5 °C
15 January 1957
Snowiest day
30.0 cm
3 April 1975
Sunniest day
15.4 h
16 June 2025
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 | -4.6 °C | +0.5 °C | 38 mm | -25 mm |
| Feb | -4.2 °C | -1.0 °C | 74 mm | +14 mm |
| Mar | 5.3 °C | +2.5 °C | 101 mm | +30 mm |
| Apr | 11.8 °C | +0.5 °C | 113 mm | +26 mm |
| May | 18.8 °C | -0.1 °C | 97 mm | +12 mm |
| Jun | 25.2 °C | +1.4 °C | 84 mm | -5 mm |
| Jul | 28.0 °C | +1.7 °C | 74 mm | -16 mm |
| Aug | 26.4 °C | +1.4 °C | 52 mm | -36 mm |
| Sep | 22.5 °C | +2.1 °C | 42 mm | -45 mm |
| Oct | 16.1 °C | +2.8 °C | 96 mm | +8 mm |
| Nov | 3.6 °C | -1.9 °C | 84 mm | +1 mm |
| Dec | -2.9 °C | -1.0 °C | 70 mm | -8 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 Gloucester?
Gloucester has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.6 °C and it receives 970 mm of precipitation per year.
What is the hottest day ever recorded in Gloucester?
The hottest day measured in Gloucester between 1940 and 2025 was 1 August 1975, reaching 38.0 °C.
What is the coldest day in Gloucester?
The coldest day measured in Gloucester between 1940 and 2025 was 15 January 1957, at -38.0 °C.
Does it snow in Gloucester?
Yes. Gloucester gets on average 141.9 cm of snow per year and has around 149 frost days.
Has the climate of Gloucester warmed?
Yes: Gloucester warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Gloucester?
The wettest day measured in Gloucester between 1940 and 2025 was 9 August 2024, with 91 mm of rain in 24 hours.
What was the windiest day in Gloucester?
The windiest day measured in Gloucester between 1940 and 2025 was 10 March 2002, with winds reaching 45.1 km/h.
What is the warmest month in Gloucester?
The warmest month in Gloucester is July (20.9 °C on average); the coldest is January (-9.6 °C).
How much does it rain in Gloucester?
Gloucester receives on average 970 mm of precipitation per year, spread over about 133 rainy days.
Is it sunny in Gloucester?
Gloucester gets on average 8.2 hours of sunshine per day, roughly 2,993 hours per year over 1940-2025.
What is the biggest single-day snowfall in Gloucester?
The heaviest 24-hour snowfall measured in Gloucester between 1940 and 2025 was 3 April 1975, with 30.0 cm.
Are there tropical nights in Gloucester?
Yes: Gloucester has on average 6 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Gloucester?
In Gloucester, between 1940 and 2025, the highest apparent temperature reached 41.9 °C on 1 August 1975, and the lowest was -43.5 °C on 15 January 1957.
Compare Gloucester with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Gloucester