Illkirch-Graffenstaden, France Climate
The warmest month is July, with an average high of 26°C; the coldest is January, with an average low of 0°C. A normal year brings 637 mm of precipitation.
Temperature through the year
The normal daily high and low and the record for every date at Strasbourg-Entzheim, since 1923. The line marks today.
- Normal low
- Normal high
- Record high
- Record low
Normals for Sep 27
- Normal high
- 20°C
- Normal low
- 10°C
- Record high
- 27°Cin 1934
- Record low
- -1°Cin 1943
- Chance of a wet day
- 39%
- Daylight
- 11 h 54 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 | 5°C | 0°C | 18°C (2025) | -24°C (1942) | 35 mm | 12.4 |
| February | 7°C | 0°C | 21°C (2026) | -22°C (1929) | 34 mm | 11.3 |
| March | 12°C | 3°C | 26°C (2021) | -17°C (1965) | 39 mm | 12.4 |
| April | 17°C | 6°C | 30°C (2018) | -6°C (1938) | 42 mm | 12.0 |
| May | 21°C | 10°C | 35°C (2022) | -4°C (1941) | 77 mm | 15.5 |
| June | 24°C | 13°C | 40°C (2026) | 1°C (1936) | 69 mm | 15.0 |
| July | 26°C | 15°C | 39°C (2019) | 5°C (1961) | 72 mm | 12.4 |
| August | 26°C | 14°C | 39°C (2015) | 5°C (1998) | 61 mm | 12.4 |
| September | 22°C | 11°C | 33°C (2023) | -1°C (1943) | 55 mm | 12.0 |
| October | 16°C | 7°C | 31°C (2023) | -8°C (1950) | 60 mm | 12.4 |
| November | 9°C | 3°C | 22°C (1926) | -11°C (1973) | 48 mm | 12.0 |
| December | 6°C | 1°C | 19°C (2022) | -23°C (1938) | 45 mm | 12.4 |
| Year | 16°C | 7°C | 637 mm | 152 |
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.
637 mm in a normal year, most in May.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Illkirch-Graffenstaden.
The muggiest month is July, when 2 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 | 91% | 100% | 0% | 0% | 0% | 0% | 0% |
| February | 0°C | 87% | 100% | 0% | 0% | 0% | 0% | 0% |
| March | 2°C | 81% | 100% | 0% | 0% | 0% | 0% | 0% |
| April | 5°C | 75% | 100% | 0% | 0% | 0% | 0% | 0% |
| May | 9°C | 74% | 87% | 10% | 2% | 0% | 0% | 0% |
| June | 12°C | 71% | 59% | 27% | 12% | 1% | 0% | 0% |
| July | 13°C | 68% | 46% | 31% | 20% | 2% | 0% | 0% |
| August | 13°C | 68% | 46% | 36% | 17% | 1% | 0% | 0% |
| September | 10°C | 74% | 80% | 17% | 3% | 0% | 0% | 0% |
| October | 7°C | 83% | 95% | 5% | 0% | 0% | 0% | 0% |
| November | 3°C | 90% | 100% | 0% | 0% | 0% | 0% | 0% |
| December | 0°C | 92% | 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 August, with the sky 62 percent covered on average; the cloudiest is November, at 77 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 13.7 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 19, with 16 h 08 min of daylight; the shortest is Dec 19, with 8 h 17 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 Illkirch-Graffenstaden 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 1923. 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 FR000007190, 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 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.