Askim climate — normals and trends
Askim (Norway) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 6.1 °C and it receives 852 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 (16.7 °C on average) and the coldest is January (-4.2 °C). Rainfall peaks in August.
Askim averages 130 frost days, 1 hot days (≥ 30 °C) and 130 rainy days per year.
Askim has warmed by +2.4 °C between 1940 and 2025, or +0.29 °C per decade. This trend is statistically significant.
The number of frost days there went from about 147 to 113 per year over the period.
The hottest day of the period reached 33.3 °C (on 27 July 2018) and the coldest -30.2 °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
AskimØstfold
- coords
- 59.58°, 11.16°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
6.1°C
Average daily high
9.6°C
Average daily low
2.4°C
Annual rainfall
852mm
Sunshine / day
7.7h
Mean relative humidity
79%
Average peak wind
15.6km/h
Seasonal range
20.9°C
Frost days (< 0 °C)
130 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
130 d/yr
Annual snowfall
114.1 cm
Average feels-like high
6.7 °C
Average feels-like low
-0.8 °C
Average peak gust
34.7 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.34 · 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
33.3 °C
27 July 2018
Coldest day
-30.2 °C
10 February 1985
Wettest day
45 mm
19 June 1964
Windiest day
43.8 km/h
29 September 1969
Strongest gust
99.7 km/h
15 January 1952
Hottest feels-like
33.6 °C
26 July 2019
Coldest feels-like
-35.4 °C
10 February 1985
Snowiest day
24.4 cm
6 November 1971
Sunniest day
17.9 h
16 June 2004
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 | 1.0 °C | +2.7 °C | 100 mm | +42 mm |
| Feb | 2.1 °C | +2.8 °C | 33 mm | -12 mm |
| Mar | 8.0 °C | +4.2 °C | 16 mm | -29 mm |
| Apr | 13.7 °C | +4.2 °C | 52 mm | +1 mm |
| May | 16.6 °C | +1.2 °C | 41 mm | -27 mm |
| Jun | 19.4 °C | +0.2 °C | 83 mm | -5 mm |
| Jul | 24.7 °C | +3.7 °C | 103 mm | +5 mm |
| Aug | 20.3 °C | +0.5 °C | 82 mm | -16 mm |
| Sep | 17.0 °C | +1.6 °C | 146 mm | +64 mm |
| Oct | 10.6 °C | +1.0 °C | 132 mm | +51 mm |
| Nov | 5.6 °C | +1.9 °C | 89 mm | +14 mm |
| Dec | 4.0 °C | +3.9 °C | 78 mm | +15 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 Askim?
Askim has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.1 °C and it receives 852 mm of precipitation per year.
What is the hottest day ever recorded in Askim?
The hottest day measured in Askim between 1940 and 2025 was 27 July 2018, reaching 33.3 °C.
What is the coldest day in Askim?
The coldest day measured in Askim between 1940 and 2025 was 10 February 1985, at -30.2 °C.
Does it snow in Askim?
Yes. Askim gets on average 114.1 cm of snow per year and has around 130 frost days.
Has the climate of Askim warmed?
Yes: Askim warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Askim?
The wettest day measured in Askim between 1940 and 2025 was 19 June 1964, with 45 mm of rain in 24 hours.
What was the windiest day in Askim?
The windiest day measured in Askim between 1940 and 2025 was 29 September 1969, with winds reaching 43.8 km/h.
What is the warmest month in Askim?
The warmest month in Askim is July (16.7 °C on average); the coldest is January (-4.2 °C).
How much does it rain in Askim?
Askim receives on average 852 mm of precipitation per year, spread over about 130 rainy days.
Is it sunny in Askim?
Askim gets on average 7.7 hours of sunshine per day, roughly 2,811 hours per year over 1940-2025.
What is the biggest single-day snowfall in Askim?
The heaviest 24-hour snowfall measured in Askim between 1940 and 2025 was 6 November 1971, with 24.4 cm.
Are there tropical nights in Askim?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Askim.
What was the most extreme apparent temperature in Askim?
In Askim, between 1940 and 2025, the highest apparent temperature reached 33.6 °C on 26 July 2019, and the lowest was -35.4 °C on 10 February 1985.
Compare Askim with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Askim