Sweden
Weather in Sundsvall through the year
The average of the weather stations Harnosand (42 km) and Oestersund-Froesoen (168 km); nearer ones count more.
| Month | Average high | Coolest to warmest day |
|---|---|---|
| January | -1.4 °C | -1.8 °C – -1.1 °C |
| February | -0.8 °C | -2.0 °C – 0.7 °C |
| March | 3.1 °C | 1.0 °C – 4.9 °C |
| April | 7.5 °C | 5.0 °C – 10.0 °C |
| May | 13.2 °C | 10.1 °C – 16.1 °C |
| June | 18.3 °C | 16.3 °C – 19.9 °C |
| July | 20.8 °C | 20.1 °C – 21.2 °C |
| August | 19.1 °C | 16.9 °C – 20.9 °C |
| September | 14.5 °C | 11.6 °C – 16.8 °C |
| October | 8.4 °C | 5.7 °C – 11.4 °C |
| November | 2.9 °C | 1.0 °C – 5.5 °C |
| December | 0.0 °C | -1.5 °C – 0.9 °C |