Wiehl, Germany Climate
The warmest month is July, with an average high of 25°C; the coldest is January, with an average low of 0°C. A normal year brings 802 mm of precipitation.
Temperature through the year
The normal daily high and low and the record for every date at Koln-Bonn, since 1931. The line marks today.
- Normal low
- Normal high
- Record high
- Record low
Normals for Sep 27
- Normal high
- 19°C
- Normal low
- 9°C
- Record high
- 27°Cin 1933
- Record low
- 2°Cin 1957
- Chance of a wet day
- 42%
- Daylight
- 11 h 53 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Record high | Record low | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | 6°C | 0°C | 16°C (1999) | -25°C (1942) | 62 mm | 15.5 |
| February | 7°C | 0°C | 21°C (2019) | -20°C (1942) | 53 mm | 14.1 |
| March | 11°C | 2°C | 27°C (2021) | -13°C (1971) | 55 mm | 15.5 |
| April | 16°C | 4°C | 31°C (1968) | -9°C (1986) | 48 mm | 12.0 |
| May | 20°C | 8°C | 34°C (2017) | -3°C (1979) | 62 mm | 12.4 |
| June | 23°C | 11°C | 38°C (2026) | 0°C (1962) | 86 mm | 15.0 |
| July | 25°C | 13°C | 40°C (2019) | 3°C (1984) | 87 mm | 15.5 |
| August | 25°C | 13°C | 39°C (2003) | 2°C (1993) | 83 mm | 12.4 |
| September | 20°C | 10°C | 34°C (2020) | -2°C (1931) | 67 mm | 12.0 |
| October | 15°C | 7°C | 28°C (1983) | -6°C (1935) | 65 mm | 12.4 |
| November | 10°C | 3°C | 21°C (2020) | -10°C (1965) | 64 mm | 15.0 |
| December | 6°C | 1°C | 18°C (2022) | -18°C (1973) | 69 mm | 18.6 |
| Year | 15°C | 6°C | 802 mm | 170 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
802 mm in a normal year, most in July.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Wiehl.
The muggiest month is June, when 1 percent of days are muggy or worse, with a mean dew point of 18°C or more.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | -1°C | 94% | 100% | 0% | 0% | 0% | 0% | 0% |
| February | 0°C | 92% | 100% | 0% | 0% | 0% | 0% | 0% |
| March | 2°C | 87% | 100% | 0% | 0% | 0% | 0% | 0% |
| April | 5°C | 81% | 100% | 0% | 0% | 0% | 0% | 0% |
| May | 9°C | 79% | 91% | 7% | 2% | 0% | 0% | 0% |
| June | 11°C | 76% | 68% | 24% | 8% | 1% | 0% | 0% |
| July | 13°C | 72% | 56% | 31% | 12% | 0% | 0% | 0% |
| August | 12°C | 71% | 61% | 31% | 8% | 0% | 0% | 0% |
| September | 9°C | 77% | 88% | 11% | 1% | 0% | 0% | 0% |
| October | 7°C | 86% | 97% | 3% | 0% | 0% | 0% | 0% |
| November | 3°C | 93% | 100% | 0% | 0% | 0% | 0% | 0% |
| December | 0°C | 95% | 100% | 0% | 0% | 0% | 0% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is September, with the sky 67 percent covered on average; the cloudiest is November, at 75 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is January, averaging 19.8 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 20, with 16 h 33 min of daylight; the shortest is Dec 18, with 7 h 55 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Wiehl in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
A record is the highest or lowest value on the date in every year the station has reported, back to 1931. It rests on one station, so a neighbor a few miles away can hold different ones.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Nearby
Sources
Records: NOAA GHCN-Daily, station GME00121042, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.