Mjölby climate — normals and trends
Mjölby (Sweden) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 6.5 °C and it receives 612 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 (16.8 °C on average) and the coldest is February (-2.9 °C). Rainfall peaks in July.
Mjölby averages 117 frost days, 1 hot days (≥ 30 °C) and 123 rainy days per year.
Mjölby 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 130 to 104 per year over the period.
The hottest day of the period reached 35.6 °C (on 21 July 2022) and the coldest -26.6 °C (on 28 January 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
MjölbyÖstergötland County
- coords
- 58.33°, 15.12°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
6.5°C
Average daily high
9.7°C
Average daily low
3.3°C
Annual rainfall
612mm
Sunshine / day
7.4h
Mean relative humidity
80%
Average peak wind
17.9km/h
Seasonal range
19.7°C
Frost days (< 0 °C)
117 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
123 d/yr
Annual snowfall
82.8 cm
Average feels-like high
6.6 °C
Average feels-like low
-0.2 °C
Average peak gust
38.2 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.25 · 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
35.6 °C
21 July 2022
Coldest day
-26.6 °C
28 January 1942
Wettest day
59 mm
8 July 2012
Windiest day
51.5 km/h
9 January 2005
Strongest gust
112.7 km/h
13 January 1984
Hottest feels-like
35.1 °C
21 July 2022
Coldest feels-like
-33.0 °C
10 January 1987
Snowiest day
19.9 cm
4 April 1998
Sunniest day
17.9 h
20 June 2024
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 | 2.3 °C | +3.0 °C | 77 mm | +39 mm |
| Feb | 1.7 °C | +2.2 °C | 13 mm | -18 mm |
| Mar | 7.6 °C | +4.2 °C | 11 mm | -20 mm |
| Apr | 12.6 °C | +3.6 °C | 22 mm | -18 mm |
| May | 14.5 °C | -0.3 °C | 40 mm | -9 mm |
| Jun | 19.6 °C | +0.7 °C | 48 mm | -14 mm |
| Jul | 23.4 °C | +2.7 °C | 106 mm | +28 mm |
| Aug | 20.3 °C | +0.7 °C | 42 mm | -35 mm |
| Sep | 17.8 °C | +2.6 °C | 90 mm | +31 mm |
| Oct | 10.9 °C | +1.0 °C | 59 mm | +7 mm |
| Nov | 5.6 °C | +1.2 °C | 41 mm | -8 mm |
| Dec | 4.8 °C | +3.4 °C | 36 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 Mjölby?
Mjölby has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.5 °C and it receives 612 mm of precipitation per year.
What is the hottest day ever recorded in Mjölby?
The hottest day measured in Mjölby between 1940 and 2025 was 21 July 2022, reaching 35.6 °C.
What is the coldest day in Mjölby?
The coldest day measured in Mjölby between 1940 and 2025 was 28 January 1942, at -26.6 °C.
Does it snow in Mjölby?
Yes. Mjölby gets on average 82.8 cm of snow per year and has around 117 frost days.
Has the climate of Mjölby warmed?
Yes: Mjölby warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Mjölby?
The wettest day measured in Mjölby between 1940 and 2025 was 8 July 2012, with 59 mm of rain in 24 hours.
What was the windiest day in Mjölby?
The windiest day measured in Mjölby between 1940 and 2025 was 9 January 2005, with winds reaching 51.5 km/h.
What is the warmest month in Mjölby?
The warmest month in Mjölby is July (16.8 °C on average); the coldest is February (-2.9 °C).
How much does it rain in Mjölby?
Mjölby receives on average 612 mm of precipitation per year, spread over about 123 rainy days.
Is it sunny in Mjölby?
Mjölby 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 Mjölby?
The heaviest 24-hour snowfall measured in Mjölby between 1940 and 2025 was 4 April 1998, with 19.9 cm.
Are there tropical nights in Mjölby?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Mjölby.
What was the most extreme apparent temperature in Mjölby?
In Mjölby, between 1940 and 2025, the highest apparent temperature reached 35.1 °C on 21 July 2022, and the lowest was -33.0 °C on 10 January 1987.
Compare Mjölby with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Mjölby