Wet weather: 984 mm a year falls on Saint-Sulpice, more than on 87% of mainland French towns
On a normal July day the thermometer tops out near 27.2°C. By January nights alone, it runs colder than 82% of mainland French towns. A year here swings 27°C from midwinter lows to midsummer highs. Radiators earn their keep from November to March, the months that average under 10°C.
Figures from Météo-France’s Romenay station, 19 km north.
A year in Saint-Sulpice at a glance
Each month’s typical high and low in °C, at the Romenay station.
What a year in Saint-Sulpice feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Romenay.
About 984 mm of rain a year
November is the wettest month and March the driest. About 31 days a year bring 10 mm or more. 28th wettest of 60 towns of 2,500+ in Ain.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Mâcon
A frosty town: 59 frosts and 74 days of 25°C a year
On about 59 nights a year the air drops to 0°C or below, and on about 7 days it stays below freezing all day. About 74 days a year reach 25°C, and 23 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Romenay: 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 Romenay
Romenay is 19 km north of Saint-Sulpice. Every figure on this page is the station’s, not a measurement in Saint-Sulpice itself.
| Station (Météo-France number) | Romenay (71373001) |
| Distance from the town | 19 km north |
| Station altitude | 210 m |
| Town altitude (its center) | 215 m |
| Period | 1991–2020 |
| Sunshine measured at | Mâcon, 19 km away |
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 Saint-Sulpice 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 Ain.
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 |
|---|---|---|---|---|
| Saint-Sulpice | Romenay | 27.2°C | 0.2°C | 984 mm |
| Montrevel-en-Bresse 6.2 km | same station | 27.2°C about the same | 0.2°C about the same | 984 mm |
| Bâgé-Dommartin 6.5 km | Mâcon | 27.1°C about the same | 0.7°C about the same | 834 mm |
| Attignat 10 km | Ceyzériat | 26.6°C 0.6°C cooler | 0.1°C about the same | 1,033 mm |
| Polliat 11 km | Ceyzériat | 26.6°C 0.6°C cooler | 0.1°C about the same | 1,033 mm |
| Feillens 12 km | Mâcon | 27.1°C about the same | 0.7°C about the same | 834 mm |
| Vonnas 12 km | Baneins | 28.2°C 1°C warmer | 1.3°C 1.1°C milder | 880 mm |
Saint-Sulpice weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Romenay station; sunshine at Mâcon.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.3°C | 0.2°C | 3.2°C | 78 mm | 62 |
| February | 8.2°C | 0.2°C | 4.2°C | 63 mm | 96 |
| March | 13.1°C | 2.9°C | 8.0°C | 63 mm | 164 |
| April | 16.9°C | 5.4°C | 11.2°C | 77 mm | 192 |
| May | 20.8°C | 9.6°C | 15.2°C | 97 mm | 217 |
| June | 24.8°C | 13.2°C | 19.0°C | 76 mm | 249 |
| July | 27.2°C | 14.8°C | 21.0°C | 75 mm | 275 |
| August | 27.0°C | 14.4°C | 20.7°C | 80 mm | 251 |
| September | 22.3°C | 10.7°C | 16.5°C | 79 mm | 195 |
| October | 16.8°C | 7.9°C | 12.4°C | 103 mm | 120 |
| November | 10.4°C | 3.6°C | 7.0°C | 107 mm | 71 |
| December | 6.7°C | 0.9°C | 3.8°C | 86 mm | 52 |
| Year | 16.7°C | 7.0°C | 11.8°C | 984 mm | 1,943 |
Where Saint-Sulpice’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Romenay, 19 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, Mâcon, 19 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 Ain.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Saint-Sulpice’s climate
How warm does Saint-Sulpice get in summer?
July is the warmest month, with average highs of 27.2°C. About 74 days a year reach 25°C, more than 67% of mainland French towns, and about 23 reach 30°C.
How cold does Saint-Sulpice get in winter?
January nights average 0.2°C. The air drops to 0°C or below on about 59 nights a year, and about 7 days a year stay below freezing all day.
How much rain does Saint-Sulpice get?
About 984 mm a year, more than 87% of mainland French towns. November is the wettest month (107 mm) and March the driest (63 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Mâcon (19 km away), averages 1,943 hours of sunshine a year.
Are these figures for Saint-Sulpice itself?
No: they are the normals of the Météo-France station matched to Saint-Sulpice, Romenay, 19 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 ROMENAY, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Saint-Sulpice →
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.