Ice on the ground: Saint-Thomas sees more frosts than 81% of mainland French towns
The warmest part of a July day comes in at 25.1°C on average. By warm days alone, it ranks cooler than 74% of mainland French towns. Seasons differ by 25°C, from the coldest nights to the warmest afternoons. An umbrella earns its place on about 122 days a year with 1 mm of rain or more.
These are the figures of Météo-France’s Nizy-le-Comte station, 17 km north-east.
A year in Saint-Thomas at a glance
Each month’s typical high and low in °C, at the Nizy-le-Comte station.
What a year in Saint-Thomas feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Nizy-le-Comte.
About 711 mm of rain a year
December is the wettest month and April the driest. About 19 days a year bring 10 mm or more. 10th wettest of 24 towns of 2,500+ in Aisne.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Saint-Quentin
A frosty town: 60 frosts and 45 days of 25°C a year
On about 60 nights a year the air drops to 0°C or below, and on about 6 days it stays below freezing all day. About 45 days a year reach 25°C, and 10 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Nizy-le-Comte: 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 Nizy-le-Comte
Nizy-le-Comte is 17 km north-east of Saint-Thomas. Every figure on this page is the station’s, not a measurement in Saint-Thomas itself.
| Station (Météo-France number) | Nizy-le-Comte (02705001) |
| Distance from the town | 17 km north-east |
| Station altitude | 90 m |
| Town altitude (its center) | 115 m |
| Period | 1991–2020 |
| Nearest station of any kind | 9.3 km |
| Sunshine measured at | Saint-Quentin, 57 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-Thomas 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 Aisne.
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-Thomas | Nizy-le-Comte | 25.1°C | 0.6°C | 711 mm |
| Athies-sous-Laon 13 km | Aulnois-Ss-Laon | 25.0°C about the same | 1.3°C 0.7°C milder | 686 mm |
| Villeneuve-sur-Aisne 13 km | same station | 25.1°C about the same | 0.6°C about the same | 711 mm |
| Laon 16 km | Aulnois-Ss-Laon | 25.0°C about the same | 1.3°C 0.7°C milder | 686 mm |
| Fismes 23 km | Braine | 25.4°C about the same | 1.4°C 0.8°C milder | 663 mm |
| Saint-Brice-Courcelles 29 km | Chambrecy-Civc | 25.4°C about the same | 0.4°C about the same | 734 mm |
Saint-Thomas weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Nizy-le-Comte station; sunshine at Saint-Quentin.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.2°C | 0.6°C | 3.4°C | 60 mm | 62 |
| February | 7.4°C | 0.5°C | 3.9°C | 52 mm | 79 |
| March | 11.7°C | 2.4°C | 7.1°C | 53 mm | 135 |
| April | 15.5°C | 4.3°C | 9.9°C | 47 mm | 183 |
| May | 19.2°C | 7.9°C | 13.6°C | 61 mm | 206 |
| June | 22.4°C | 10.8°C | 16.6°C | 54 mm | 208 |
| July | 25.1°C | 12.7°C | 18.9°C | 64 mm | 214 |
| August | 24.8°C | 12.5°C | 18.7°C | 68 mm | 207 |
| September | 20.7°C | 9.6°C | 15.1°C | 51 mm | 167 |
| October | 15.6°C | 7.0°C | 11.3°C | 63 mm | 116 |
| November | 9.8°C | 3.6°C | 6.7°C | 62 mm | 67 |
| December | 6.5°C | 1.4°C | 3.9°C | 76 mm | 54 |
| Year | 15.4°C | 6.1°C | 10.8°C | 711 mm | 1,696 |
Where Saint-Thomas’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Nizy-le-Comte, 17 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, Saint-Quentin, 57 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 Aisne.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Saint-Thomas’s climate
How warm does Saint-Thomas get in summer?
July is the warmest month, with average highs of 25.1°C. About 45 days a year reach 25°C, fewer than 74% of mainland French towns, and about 10 reach 30°C.
How cold does Saint-Thomas get in winter?
February nights average 0.5°C. The air drops to 0°C or below on about 60 nights a year, and about 6 days a year stay below freezing all day.
How much rain does Saint-Thomas get?
About 711 mm a year, less than 65% of mainland French towns. December is the wettest month (76 mm) and April the driest (47 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Saint-Quentin (57 km away), averages 1,696 hours of sunshine a year.
Are these figures for Saint-Thomas itself?
No: they are the normals of the Météo-France station matched to Saint-Thomas, Nizy-le-Comte, 17 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 NIZY-LE-COMTE, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Saint-Thomas →
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.