Climate averages 1991–2020
Winterthur weather
in January.
A cold, moderately wet month: the coolest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cold month in Winterthur: daytime highs average 4.5°C and nights cool to about -1.9°C. By daytime temperature it is the coolest month of the year.
Expect about 79 mm of rain on roughly 12 days, which makes January a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 8 h 55 min on an average January day.
The nearest other city in this atlas is Zürich (20 km away). In January its highs average 4.8°C, about as warm as Winterthur, with 92 mm of rain.
Among the 8 cities listed in Switzerland, Winterthur ranks 6th of 8 for the warmest January highs and 1st of 8 for the driest January (rainfall, lowest first). The mean January high of those 8 cities is 4.5°C; Winterthur is 0.1°C cooler than that mean.
From January to February, average highs rise by 1.3°C to 5.8°C, and monthly rainfall falls from 79 mm to 69 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Winterthur climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 4.5°C-1.9°C | -1.9°C | 79 | 12.3 | 8.99 h |
| February | 5.8°C-2.0°C | -2.0°C | 69 | 11.3 | 10.210 h |
| March | 9.9°C0.8°C | 0.8°C | 82 | 13.2 | 11.912 h |
| April | 13.8°C4.0°C | 4.0°C | 85 | 12.5 | 13.614 h |
| May | 17.6°C8.5°C | 8.5°C | 119 | 15.2 | 15.115 h |
| June | 21.2°C12.3°C | 12.3°C | 113 | 14.8 | 15.916 h |
| July | 23.1°C14.4°C | 14.4°C | 106 | 13.7 | 15.616 h |
| August | 23.1°C14.6°C | 14.6°C | 107 | 13.0 | 14.314 h |
| September | 18.7°C10.8°C | 10.8°C | 91 | 11.1 | 12.613 h |
| October | 14.4°C6.9°C | 6.9°C | 83 | 11.6 | 10.911 h |
| November | 8.6°C2.2°C | 2.2°C | 87 | 12.1 | 9.49 h |
| December | 4.9°C-0.9°C | -0.9°C | 93 | 13.7 | 8.59 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Zürich in JanuarySwitzerland · 20 kmHigh 4.8°C · Low -1.4°C · 92 mm rain
- Konstanz in JanuaryGermany · 38 kmHigh 3.6°C · Low -1.2°C · 71 mm rain
- Sankt Gallen in JanuarySwitzerland · 50 kmHigh 2.8°C · Low -4.8°C · 88 mm rain
- Luzern in JanuarySwitzerland · 60 kmHigh 4.6°C · Low -0.9°C · 117 mm rain
- Villingen-Schwenningen in JanuaryGermany · 64 kmHigh 2.3°C · Low -4.1°C · 87 mm rain
- Vaduz in JanuaryLiechtenstein · 72 kmHigh 4.5°C · Low -4.1°C · 110 mm rain
- Freiburg in JanuaryGermany · 85 kmHigh 5.3°C · Low -1.2°C · 91 mm rain
- Basel in JanuarySwitzerland · 87 kmHigh 5.4°C · Low -1.7°C · 80 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Winterthur) is explained once on the Winterthur year overview and on the Sources, method and limits page.