Climate averages 1991–2020
Siegen weather
in July.
A mild, moderately wet month: the warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a mild month in Siegen: daytime highs average 21.9°C and nights cool to about 13.7°C. By daytime temperature it is the warmest month of the year.
Expect about 83 mm of rain on roughly 14 days, which makes July a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 16 h 02 min on an average July day.
The nearest other city in this atlas is Lüdenscheid (47 km away). In July its highs average 20.6°C, 1.2°C cooler than Siegen, with 105 mm of rain.
Among the 120 cities listed in Germany, Siegen ranks joint 108th of 120 for the warmest July highs and joint 83rd of 120 for the driest July (rainfall, lowest first). The mean July high of those 120 cities is 23.0°C; Siegen is 1.2°C cooler than that mean.
From July to August, average highs fall by 0.2°C to 21.6°C, and monthly rainfall falls from 83 mm to 81 mm.
The annual picture
July 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
Siegen climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.2°C-1.4°C | -1.4°C | 100 | 14.6 | 8.58 h |
| February | 4.3°C-1.6°C | -1.6°C | 79 | 12.1 | 10.010 h |
| March | 8.3°C1.0°C | 1.0°C | 82 | 13.7 | 11.812 h |
| April | 13.1°C4.4°C | 4.4°C | 62 | 11.7 | 13.814 h |
| May | 16.9°C8.4°C | 8.4°C | 72 | 12.6 | 15.515 h |
| June | 19.9°C11.5°C | 11.5°C | 76 | 12.8 | 16.416 h |
| July, selected | 21.9°C13.7°C | 13.7°C | 83 | 14.2 | 16.016 h |
| August | 21.6°C13.5°C | 13.5°C | 81 | 13.0 | 14.615 h |
| September | 17.6°C10.4°C | 10.4°C | 76 | 11.6 | 12.713 h |
| October | 12.7°C6.8°C | 6.8°C | 80 | 12.9 | 10.811 h |
| November | 7.4°C3.0°C | 3.0°C | 85 | 13.4 | 9.09 h |
| December | 4.0°C0.0°C | 0.0°C | 109 | 15.8 | 8.08 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
July in nearby cities
- Lüdenscheid in JulyGermany · 47 kmHigh 20.6°C · Low 12.9°C · 105 mm rain
- Marburg an der Lahn in JulyGermany · 53 kmHigh 22.7°C · Low 13.8°C · 66 mm rain
- Gießen in JulyGermany · 56 kmHigh 23.3°C · Low 14.3°C · 67 mm rain
- Arnsberg in JulyGermany · 57 kmHigh 21.3°C · Low 13.3°C · 85 mm rain
- Iserlohn in JulyGermany · 60 kmHigh 21.4°C · Low 13.6°C · 86 mm rain
- Troisdorf in JulyGermany · 62 kmHigh 23.2°C · Low 14.7°C · 77 mm rain
- Bergisch Gladbach in JulyGermany · 64 kmHigh 23.0°C · Low 14.8°C · 88 mm rain
- Koblenz in JulyGermany · 66 kmHigh 23.6°C · Low 14.9°C · 62 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 Siegen) is explained once on the Siegen year overview and on the Sources, method and limits page.