Jessheim climate — normals and trends
Jessheim (Norway) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 4.7 °C and it receives 867 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 (16.0 °C on average) and the coldest is January (-6.6 °C). Rainfall peaks in August.
Jessheim averages 155 frost days, 0 hot days (≥ 30 °C) and 133 rainy days per year.
Jessheim has warmed by +2.8 °C between 1940 and 2025, or +0.33 °C per decade. This trend is statistically significant.
The number of frost days there went from about 174 to 136 per year over the period.
The hottest day of the period reached 32.9 °C (on 10 August 1975) and the coldest -31.8 °C (on 10 February 1985).
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
JessheimAkershus
- coords
- 60.14°, 11.18°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
4.7°C
Average daily high
8.2°C
Average daily low
1.0°C
Annual rainfall
867mm
Sunshine / day
7.4h
Mean relative humidity
79%
Average peak wind
13.5km/h
Seasonal range
22.6°C
Frost days (< 0 °C)
155 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
133 d/yr
Annual snowfall
178.6 cm
Average feels-like high
5.3 °C
Average feels-like low
-2.1 °C
Average peak gust
32.1 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.8 °C
since 1940
+0.3 °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
32.9 °C
10 August 1975
Coldest day
-31.8 °C
10 February 1985
Wettest day
58 mm
3 September 1988
Windiest day
38.4 km/h
19 April 1980
Strongest gust
99.7 km/h
16 October 1987
Hottest feels-like
32.5 °C
7 July 1991
Coldest feels-like
-37.5 °C
11 January 1987
Snowiest day
23.8 cm
31 March 1962
Sunniest day
18.1 h
21 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 | -0.9 °C | +3.2 °C | 93 mm | +36 mm |
| Feb | -0.2 °C | +2.3 °C | 35 mm | -10 mm |
| Mar | 7.4 °C | +4.8 °C | 10 mm | -36 mm |
| Apr | 13.4 °C | +5.4 °C | 24 mm | -28 mm |
| May | 15.9 °C | +1.4 °C | 46 mm | -22 mm |
| Jun | 18.4 °C | -0.1 °C | 120 mm | +34 mm |
| Jul | 23.7 °C | +3.5 °C | 136 mm | +40 mm |
| Aug | 19.2 °C | +0.4 °C | 81 mm | -19 mm |
| Sep | 15.8 °C | +1.6 °C | 145 mm | +62 mm |
| Oct | 9.3 °C | +1.3 °C | 136 mm | +51 mm |
| Nov | 4.5 °C | +2.5 °C | 74 mm | -7 mm |
| Dec | 2.9 °C | +4.9 °C | 91 mm | +25 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 Jessheim?
Jessheim has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 4.7 °C and it receives 867 mm of precipitation per year.
What is the hottest day ever recorded in Jessheim?
The hottest day measured in Jessheim between 1940 and 2025 was 10 August 1975, reaching 32.9 °C.
What is the coldest day in Jessheim?
The coldest day measured in Jessheim between 1940 and 2025 was 10 February 1985, at -31.8 °C.
Does it snow in Jessheim?
Yes. Jessheim gets on average 178.6 cm of snow per year and has around 155 frost days.
Has the climate of Jessheim warmed?
Yes: Jessheim warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Jessheim?
The wettest day measured in Jessheim between 1940 and 2025 was 3 September 1988, with 58 mm of rain in 24 hours.
What was the windiest day in Jessheim?
The windiest day measured in Jessheim between 1940 and 2025 was 19 April 1980, with winds reaching 38.4 km/h.
What is the warmest month in Jessheim?
The warmest month in Jessheim is July (16.0 °C on average); the coldest is January (-6.6 °C).
How much does it rain in Jessheim?
Jessheim receives on average 867 mm of precipitation per year, spread over about 133 rainy days.
Is it sunny in Jessheim?
Jessheim gets on average 7.4 hours of sunshine per day, roughly 2,701 hours per year over 1940-2025.
What is the biggest single-day snowfall in Jessheim?
The heaviest 24-hour snowfall measured in Jessheim between 1940 and 2025 was 31 March 1962, with 23.8 cm.
Are there tropical nights in Jessheim?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Jessheim.
What was the most extreme apparent temperature in Jessheim?
In Jessheim, between 1940 and 2025, the highest apparent temperature reached 32.5 °C on 7 July 1991, and the lowest was -37.5 °C on 11 January 1987.
Compare Jessheim with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Jessheim