Juankoski climate — normals and trends
Juankoski (Finland) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 2.9 °C and it receives 666 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 (-9.7 °C). Rainfall peaks in August.
Juankoski averages 171 frost days, 0 hot days (≥ 30 °C) and 137 rainy days per year.
Juankoski has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.
The number of frost days there went from about 183 to 159 per year over the period.
The hottest day of the period reached 32.1 °C (on 29 July 2010) and the coldest -36.6 °C (on 8 January 1987).
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
JuankoskiNorth Savo
- coords
- 63.06°, 28.33°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
2.9°C
Average daily high
5.6°C
Average daily low
0.1°C
Annual rainfall
666mm
Sunshine / day
6.7h
Mean relative humidity
82%
Average peak wind
15.9km/h
Seasonal range
26.4°C
Frost days (< 0 °C)
171 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
137 d/yr
Annual snowfall
159.6 cm
Average feels-like high
2.4 °C
Average feels-like low
-3.5 °C
Average peak gust
33.5 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
8.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.29 · 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
32.1 °C
29 July 2010
Coldest day
-36.6 °C
8 January 1987
Wettest day
57 mm
21 August 1968
Windiest day
40.6 km/h
18 April 1976
Strongest gust
94.3 km/h
26 October 1985
Hottest feels-like
32.5 °C
28 July 2010
Coldest feels-like
-42.0 °C
8 January 1987
Snowiest day
16.0 cm
20 December 1970
Sunniest day
19.2 h
29 June 2010
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 | -3.2 °C | +4.1 °C | 51 mm | +10 mm |
| Feb | -3.4 °C | +3.4 °C | 16 mm | -17 mm |
| Mar | 2.5 °C | +4.2 °C | 48 mm | +13 mm |
| Apr | 6.8 °C | +2.4 °C | 26 mm | -13 mm |
| May | 11.2 °C | -0.2 °C | 52 mm | +5 mm |
| Jun | 16.6 °C | -0.3 °C | 89 mm | +23 mm |
| Jul | 23.5 °C | +3.7 °C | 54 mm | -26 mm |
| Aug | 19.0 °C | +1.2 °C | 56 mm | -30 mm |
| Sep | 15.9 °C | +3.7 °C | 75 mm | +4 mm |
| Oct | 7.5 °C | +1.9 °C | 62 mm | +1 mm |
| Nov | 3.2 °C | +3.4 °C | 74 mm | +16 mm |
| Dec | -0.2 °C | +4.2 °C | 78 mm | +27 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 Juankoski?
Juankoski has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 2.9 °C and it receives 666 mm of precipitation per year.
What is the hottest day ever recorded in Juankoski?
The hottest day measured in Juankoski between 1940 and 2025 was 29 July 2010, reaching 32.1 °C.
What is the coldest day in Juankoski?
The coldest day measured in Juankoski between 1940 and 2025 was 8 January 1987, at -36.6 °C.
Does it snow in Juankoski?
Yes. Juankoski gets on average 159.6 cm of snow per year and has around 171 frost days.
Has the climate of Juankoski warmed?
Yes: Juankoski warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Juankoski?
The wettest day measured in Juankoski between 1940 and 2025 was 21 August 1968, with 57 mm of rain in 24 hours.
What was the windiest day in Juankoski?
The windiest day measured in Juankoski between 1940 and 2025 was 18 April 1976, with winds reaching 40.6 km/h.
What is the warmest month in Juankoski?
The warmest month in Juankoski is July (16.7 °C on average); the coldest is January (-9.7 °C).
How much does it rain in Juankoski?
Juankoski receives on average 666 mm of precipitation per year, spread over about 137 rainy days.
Is it sunny in Juankoski?
Juankoski gets on average 6.7 hours of sunshine per day, roughly 2,446 hours per year over 1940-2025.
What is the biggest single-day snowfall in Juankoski?
The heaviest 24-hour snowfall measured in Juankoski between 1940 and 2025 was 20 December 1970, with 16.0 cm.
Are there tropical nights in Juankoski?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Juankoski.
What was the most extreme apparent temperature in Juankoski?
In Juankoski, between 1940 and 2025, the highest apparent temperature reached 32.5 °C on 28 July 2010, and the lowest was -42.0 °C on 8 January 1987.
Compare Juankoski with another city
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Nearby cities
The climate around Juankoski