Nights turn raw in Lain each January, colder than in 78% of mainland French towns
Peak summer warmth arrives in July, with afternoons near 25.0°C. Rain peaks in October and eases off in July. Only about 47 days a year reach 25°C, fewer than in 73% of mainland French towns. Frost greets about 50 mornings a year, so leave time to clear the car.
Figures from Météo-France’s Molesmes station, 9 km east.
A year in Lain at a glance
Each month’s typical high and low in °C, at the Molesmes station.
What a year in Lain feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Molesmes.
About 850 mm of rain a year
October is the wettest month and July the driest. About 25 days a year bring 10 mm or more. The wettest of 19 towns of 2,500+ in Yonne.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Nevers-Marzy
50 frosts and 47 days of 25°C a year
On about 50 nights a year the air drops to 0°C or below, and on about 10 days it stays below freezing all day. About 47 days a year reach 25°C, and 13 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Molesmes: 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 Molesmes
Molesmes is 9 km east of Lain. Every figure on this page is the station’s, not a measurement in Lain itself.
| Station (Météo-France number) | Molesmes (89260001) |
| Distance from the town | 9 km east |
| Station altitude | 355 m |
| Town altitude (its center) | 283 m |
| Period | 1991–2020 |
| Sunshine measured at | Nevers-Marzy, 71 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 Lain 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 Yonne.
Nearby towns’ climate
The nearest towns of 2,500+ within 29 km, each with its own matched station.
| Town | Station | July high | January low | Rain a year |
|---|---|---|---|---|
| Lain | Molesmes | 25.0°C | 0.7°C | 850 mm |
| Toucy 13 km | Grandchamp | 25.8°C 0.8°C warmer | 1.2°C 0.5°C milder | 759 mm |
| Clamecy 22 km | Merry-sur-Yonne | 26.4°C 1.4°C warmer | 0.8°C about the same | 777 mm |
| Saint-Georges-sur-Baulche 25 km | Aillant | 27.5°C 2.5°C warmer | 0.3°C about the same | 727 mm |
| Auxerre 26 km | Aillant | 27.5°C 2.5°C warmer | 0.3°C about the same | 727 mm |
Lain weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Molesmes station; sunshine at Nevers-Marzy.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 5.4°C | 0.7°C | 3.1°C | 73 mm | 63 |
| February | 6.8°C | 0.7°C | 3.8°C | 62 mm | 91 |
| March | 11.2°C | 3.4°C | 7.3°C | 62 mm | 154 |
| April | 14.8°C | 5.7°C | 10.2°C | 70 mm | 181 |
| May | 18.6°C | 9.2°C | 13.9°C | 74 mm | 205 |
| June | 22.4°C | 12.5°C | 17.4°C | 69 mm | 226 |
| July | 25.0°C | 14.6°C | 19.8°C | 61 mm | 245 |
| August | 24.9°C | 14.7°C | 19.8°C | 64 mm | 236 |
| September | 20.3°C | 11.3°C | 15.8°C | 63 mm | 189 |
| October | 15.2°C | 8.2°C | 11.7°C | 89 mm | 123 |
| November | 9.4°C | 4.0°C | 6.7°C | 80 mm | 72 |
| December | 6.0°C | 1.5°C | 3.8°C | 84 mm | 59 |
| Year | 15.0°C | 7.2°C | 11.1°C | 850 mm | 1,844 |
Where Lain’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Molesmes, 9 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, Nevers-Marzy, 71 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 Yonne.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Lain’s climate
How warm does Lain get in summer?
July is the warmest month, with average highs of 25.0°C. About 47 days a year reach 25°C, fewer than 73% of mainland French towns, and about 13 reach 30°C.
How cold does Lain get in winter?
January nights average 0.7°C. The air drops to 0°C or below on about 50 nights a year, and about 10 days a year stay below freezing all day.
How much rain does Lain get?
About 850 mm a year, more than 70% of mainland French towns. October is the wettest month (89 mm) and July the driest (61 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Nevers-Marzy (71 km away), averages 1,844 hours of sunshine a year.
Are these figures for Lain itself?
No: they are the normals of the Météo-France station matched to Lain, Molesmes, 9 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 MOLESMES_SAPC, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Lain →
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.