Montreuil-le-Gast, France Climate
The warmest month is July, with an average high of 25°C; the coldest is February, with an average low of 3°C. A normal year brings 694 mm of precipitation.
Temperature through the year
The normal daily high and low and the record for every date at Rennes-St Jacques, since 1944. The line marks today.
- Normal low
- Normal high
- Record high
- Record low
Normals for Sep 30
- Normal high
- 20°C
- Normal low
- 10°C
- Record high
- 30°Cin 2011
- Record low
- 2°Cin 1972
- Chance of a wet day
- 45%
- Daylight
- 11 h 43 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 | 9°C | 3°C | 17°C (2003) | -15°C (1985) | 67 mm | 12.4 |
| February | 10°C | 3°C | 21°C (2019) | -11°C (1948) | 51 mm | 11.3 |
| March | 13°C | 5°C | 24°C (2021) | -7°C (2005) | 49 mm | 12.4 |
| April | 16°C | 6°C | 29°C (1945) | -3°C (1984) | 51 mm | 12.0 |
| May | 19°C | 9°C | 34°C (2026) | -1°C (1945) | 58 mm | 12.4 |
| June | 23°C | 12°C | 42°C (2026) | 2°C (1962) | 51 mm | 9.0 |
| July | 25°C | 14°C | 41°C (2022) | 6°C (1954) | 44 mm | 9.3 |
| August | 25°C | 14°C | 40°C (2026) | 4°C (1956) | 44 mm | 9.3 |
| September | 22°C | 11°C | 35°C (2023) | 2°C (1972) | 57 mm | 9.0 |
| October | 17°C | 9°C | 30°C (2011) | -5°C (1947) | 73 mm | 12.4 |
| November | 13°C | 6°C | 21°C (2015) | -7°C (1955) | 74 mm | 15.0 |
| December | 10°C | 4°C | 18°C (2022) | -13°C (1964) | 73 mm | 12.4 |
| Year | 17°C | 8°C | 694 mm | 137 |
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.
694 mm in a normal year, most in November.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Montreuil-le-Gast.
The muggiest month is July, when 3 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 | 4°C | 92% | 100% | 0% | 0% | 0% | 0% | 0% |
| February | 3°C | 88% | 100% | 0% | 0% | 0% | 0% | 0% |
| March | 5°C | 84% | 100% | 0% | 0% | 0% | 0% | 0% |
| April | 6°C | 80% | 99% | 1% | 0% | 0% | 0% | 0% |
| May | 9°C | 78% | 87% | 12% | 2% | 0% | 0% | 0% |
| June | 12°C | 76% | 62% | 27% | 10% | 1% | 0% | 0% |
| July | 14°C | 75% | 40% | 41% | 16% | 3% | 0% | 0% |
| August | 14°C | 75% | 41% | 37% | 20% | 2% | 0% | 0% |
| September | 11°C | 78% | 67% | 28% | 6% | 0% | 0% | 0% |
| October | 10°C | 86% | 83% | 16% | 1% | 0% | 0% | 0% |
| November | 7°C | 91% | 98% | 2% | 0% | 0% | 0% | 0% |
| December | 4°C | 93% | 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 60 percent covered on average; the cloudiest is January, at 71 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 18.7 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 22, with 16 h 06 min of daylight; the shortest is Dec 19, with 8 h 20 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 Montreuil-le-Gast 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 1944. 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 FR000007130, 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.