Weather stations › Jämsä Halli lentoasema
Weather station · 101315
Jämsä Halli lentoasema
Coordinates
61.86°N, 24.80°E
Elevation
144 m
Data since
01.04.1964
Observation period
1964–2026 · 63 yr
Climate summary
Annual mean temperature
4.0 °C
whole-period average
Precipitation / year
595 mm
mean annual precipitation
Hot days / year
16
max ≥ 25 °C
Ice days / year
85
max < 0 °C
Annual mean temperature 1965–2025
▲ +2.7 °C over the period
Climate normals · monthly
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Record high | 8.8 | 8.2 | 16.5 | 23.7 | 29.2 | 31.4 | 33.1 | 31.6 | 24.0 | 18.2 | 12.5 | 9.8 | 33.1 |
| Mean maximum | 3.4 | 3.4 | 8.9 | 17.1 | 24.4 | 27.0 | 28.3 | 26.7 | 20.7 | 13.2 | 7.9 | 4.2 | 29.4 |
| Average high | -3.7 | -3.6 | 1.2 | 7.9 | 15.2 | 19.6 | 22.2 | 20.1 | 14.1 | 6.9 | 1.7 | -1.6 | 8.3 |
| Daily mean | -6.6 | -6.9 | -2.9 | 3.0 | 9.6 | 14.3 | 17.0 | 15.1 | 9.9 | 4.1 | -0.4 | -4.0 | 4.4 |
| Average low | -9.7 | -10.4 | -7.1 | -1.7 | 3.6 | 8.8 | 11.9 | 10.5 | 6.2 | 1.5 | -2.5 | -6.6 | 0.4 |
| Mean minimum | -25.1 | -24.6 | -18.4 | -9.7 | -3.7 | 2.4 | 5.7 | 3.9 | -1.5 | -7.0 | -12.1 | -19.0 | -29.0 |
| Record low | -36.4 | -35.1 | -28.3 | -15.3 | -8.2 | -1.5 | 1.5 | 0.3 | -6.7 | -17.6 | -22.8 | -34.1 | -36.4 |
| Precipitation (mm) | 48 | 32 | 34 | 30 | 38 | 66 | 86 | 73 | 54 | 68 | 53 | 48 | 631 |
| Maximum snow depth (cm) | 36 | 42 | 47 | 30 | 1 | 0 | 0 | 0 | 0 | 4 | 14 | 22 | 49 |
All values for the selected period · temperatures °C · snow: mean of the maximum snow depth; the Year column covers the whole year
Records
Extremes over the entire observation period
On this day · 28.7.
Measured for this calendar day
Warmest
32.0°
1994
Coldest
5.1°
1987
On average
17.2°
62-year average
Wettest
26.8 mm
2004
Open in tools
Source: Finnish Meteorological Institute open data. Statistics are computed over the station's entire observation period.