Frosty mornings in Billy outnumber those of 91% of mainland French towns
Peak summer warmth arrives in July, with afternoons near 26.4°C. Wet weather is most frequent in October and least in February. By rainfall alone, it ranks drier than 69% of mainland French towns. Plan for rain on about 112 days a year, the days with 1 mm or more.
Figures from Météo-France’s Romorantin station, 11 km east.
A year in Billy at a glance
Each month’s typical high and low in °C, at the Romorantin station.
What a year in Billy feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Romorantin.
About 696 mm of rain a year
October is the wettest month and February the driest. About 20 days a year bring 10 mm or more. 6th wettest of 26 towns of 2,500+ in Loir-et-Cher.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Romorantin
A frosty town: 69 frosts and 66 days of 25°C a year
On about 69 nights a year the air drops to 0°C or below, and on about 3 days it stays below freezing all day. About 66 days a year reach 25°C, and 19 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Romorantin: a frost is a night of 0°C or below, a summer day (jour d’été) 25°C or more, a hot day (forte chaleur) 30°C or more.
The Météo-France station at Romorantin
Romorantin is 11 km east of Billy. Every figure on this page is the station’s, not a measurement in Billy itself.
| Station (Météo-France number) | Romorantin (41097001) |
| Distance from the town | 11 km east |
| Station altitude | 83 m |
| Town altitude (its center) | 87 m |
| Period | 1991–2020 |
| Nearest station of any kind | 9.6 km |
| Sunshine measured at | the same station |
TownRatings matches each commune to one station with at least 24 years of temperature and rain records: the nearest, counting every 100 m of height difference as 10 km, never across the sea.
How Billy compares
Against the 4,385 towns of 2,500 or more in mainland France, each read from its own matched station. The dots are the other towns of 2,500+ in Loir-et-Cher.
Nearby towns’ climate
The nearest towns of 2,500+ within 29 km. Where a neighbor uses the same station its figures are the same: the differences you’d feel over a few kilometers aren’t in the normals.
| Town | Station | July high | January low | Rain a year |
|---|---|---|---|---|
| Billy | Romorantin | 26.4°C | 1.1°C | 696 mm |
| Selles-sur-Cher 4 km | same station | 26.4°C about the same | 1.1°C about the same | 696 mm |
| Chabris 11 km | same station | 26.4°C about the same | 1.1°C about the same | 696 mm |
| Noyers-sur-Cher 11 km | Lye | 25.9°C 0.5°C cooler | 2.2°C 1.1°C milder | 673 mm |
| Saint-Aignan 14 km | Lye | 25.9°C 0.5°C cooler | 2.2°C 1.1°C milder | 673 mm |
| Romorantin-Lanthenay 17 km | same station | 26.4°C about the same | 1.1°C about the same | 696 mm |
| Villefranche-sur-Cher 17 km | same station | 26.4°C about the same | 1.1°C about the same | 696 mm |
Billy weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Romorantin station.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 8.1°C | 1.1°C | 4.6°C | 56 mm | 61 |
| February | 9.5°C | 0.4°C | 5.0°C | 47 mm | 85 |
| March | 13.8°C | 2.2°C | 8.0°C | 47 mm | 145 |
| April | 17.0°C | 3.9°C | 10.4°C | 57 mm | 177 |
| May | 20.6°C | 7.8°C | 14.2°C | 69 mm | 197 |
| June | 24.1°C | 11.1°C | 17.6°C | 54 mm | 211 |
| July | 26.4°C | 12.6°C | 19.5°C | 56 mm | 229 |
| August | 26.6°C | 12.1°C | 19.3°C | 54 mm | 226 |
| September | 22.5°C | 8.7°C | 15.6°C | 55 mm | 182 |
| October | 17.5°C | 7.0°C | 12.2°C | 70 mm | 120 |
| November | 11.7°C | 3.5°C | 7.6°C | 64 mm | 67 |
| December | 8.4°C | 1.4°C | 4.9°C | 66 mm | 55 |
| Year | 17.2°C | 6.0°C | 11.6°C | 696 mm | 1,752 |
Where Billy’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Romorantin, 11 km away: statistics for 1991–2020.
- Which station: among stations with at least 24 of the 30 years of temperature and rain, the nearest to the commune’s population-weighted center, counting each 100 m of height difference as 10 km; mainland towns use mainland stations and each overseas département its own.
- Altitudes: the town’s from IGN’s RGE ALTI® at its population-weighted center; the station’s from Météo-France.
- Sunshine: the nearest station with at least 10 years of sunshine records, Romorantin, 11 km away.
- Comparisons: every town of 2,500 or more in mainland France, read the same way; the dots are the towns of 2,500+ in Loir-et-Cher.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Billy’s climate
How warm does Billy get in summer?
August is the warmest month, with average highs of 26.6°C. About 66 days a year reach 25°C, more than 57% of mainland French towns, and about 19 reach 30°C.
How cold does Billy get in winter?
February nights average 0.4°C. The air drops to 0°C or below on about 69 nights a year, and about 3 days a year stay below freezing all day.
How much rain does Billy get?
About 696 mm a year, less than 69% of mainland French towns. October is the wettest month (70 mm) and February the driest (47 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Romorantin (11 km away), averages 1,752 hours of sunshine a year.
Are these figures for Billy itself?
No: they are the normals of the Météo-France station matched to Billy, Romorantin, 11 km away. France publishes its climate normals by station, not by commune; a valley, a hill or the sea can make a difference over a few kilometers.
Where do these figures come from?
Météo-France’s fiches climatologiques: 30-year averages (1991–2020) for each of its long-running stations, published as open data since 2024. They are normals, not a forecast.
Source: Météo-France, fiches climatologiques, 1991–2020 statistics (station ROMORANTIN, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Billy →
Contains public sector information under the Licence Ouverte / Open Licence 2.0 (Etalab): INSEE, DGFiP, the Interior Ministry’s statistics service (SSMSI), the Ministry of Education (DEPP), the Health Ministry’s statistics service (DREES) and the Housing Ministry (Carte des loyers). Commune boundaries: IGN Admin Express.