Climate in Winterthur: average temperature by month
In Winterthur the warmest month is July, with 23.4 °C on average in the afternoon; the coolest is January, with 3.0 °C.
The average of the weather stations Zuerich/Fluntern (18 km) and Saentis (55 km); nearer ones count more.
| Month | Average high | Coolest to warmest day |
|---|---|---|
| January | 3.0 °C | 2.4 °C – 3.8 °C |
| February | 5.2 °C | 3.9 °C – 6.8 °C |
| March | 9.4 °C | 6.8 °C – 11.5 °C |
| April | 13.4 °C | 11.6 °C – 15.1 °C |
| May | 17.5 °C | 15.3 °C – 19.8 °C |
| June | 21.7 °C | 19.9 °C – 23.2 °C |
| July | 23.4 °C | 22.8 °C – 24.0 °C |
| August | 23.0 °C | 21.1 °C – 23.8 °C |
| September | 18.7 °C | 15.8 °C – 21.0 °C |
| October | 13.4 °C | 10.7 °C – 15.6 °C |
| November | 7.0 °C | 4.2 °C – 10.5 °C |
| December | 3.6 °C | 3.4 °C – 4.2 °C |