The region: Franches-Montagnes
Franches-Montagnes (Jura): the weather above is computed at the centre of the region (1000 m). Below you will find the forecasts for the 18 municipalities, 0 ski resorts, 0 lakes and 0 passes or summits within 12 km — the terrain makes the weather vary a lot from one valley to the next: use the page of the exact place.
Climate of Franches-Montagnes: 1991–2020 normals
In Franches-Montagnes (1000 m), the mean annual temperature is 7.5 °C. The warmest month is July (15.7 °C on average) and the coldest January (0.2 °C). About 1117 mm of precipitation falls per year, peaking in August (111 mm) with a minimum in March (77 mm). On average there are 113 frost days per year. The mean monthly maximum reaches 27.1 °C and the absolute minimum −10.2 °C.
Mean monthly precipitation (mm) — bar height relative to the wettest month.
| Month | Mean T | Abs. max | Abs. min | Precip. (mm) | Frost days | Summer days |
|---|---|---|---|---|---|---|
| Jan | 0.2 °C | 10.2 °C | −10.2 °C | 86 | 25 | 0 |
| Feb | 0.2 °C | 11.0 °C | −9.9 °C | 80 | 22 | 0 |
| Mar | 3.0 °C | 14.0 °C | −7.1 °C | 77 | 17 | 0 |
| Apr | 6.1 °C | 18.0 °C | −4.1 °C | 78 | 8 | 0 |
| May | 10.1 °C | 22.1 °C | 0.4 °C | 104 | 1 | 0 |
| Jun | 13.7 °C | 25.6 °C | 4.0 °C | 102 | 0 | 3 |
| Jul | 15.7 °C | 27.1 °C | 6.8 °C | 102 | 0 | 5 |
| Aug | 15.6 °C | 26.6 °C | 6.2 °C | 111 | 0 | 4 |
| Sep | 11.8 °C | 22.0 °C | 3.0 °C | 88 | 0 | 0 |
| Oct | 8.3 °C | 19.2 °C | −1.3 °C | 95 | 4 | 0 |
| Nov | 3.7 °C | 14.8 °C | −5.6 °C | 91 | 14 | 0 |
| Dec | 1.1 °C | 11.2 °C | −9.1 °C | 103 | 22 | 0 |
| Year | 7.5 °C | 27.1 °C | −10.2 °C | 1117 | 113 | 12 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Chasseral (14 km, 1594 m), Fahy (20 km, 596 m), Chaumont (22 km, 1136 m), adjusted to the elevation of Franches-Montagnes (1000 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Municipalities in the region
- Muriaux 2 km · 958 m
- Saignelégier 2 km · 993 m
- Le Bémont (JU) 3 km · 958 m
- Les Enfers 5 km · 951 m
- Les Breuleux 5 km · 1030 m
- Montfaucon 6 km · 952 m
- Villeret 7 km · 932 m
- Soubey 8 km · 570 m
- Le Noirmont 8 km · 1021 m
- Saint-Imier 8 km · 1032 m
- Lajoux (JU) 9 km · 916 m
- Courtelary 9 km · 777 m
- Les Genevez (JU) 9 km · 1036 m
- Tramelan 9 km · 918 m
- Cortébert 11 km · 677 m
- Sonvilier 11 km · 870 m
- Saint-Brais 11 km · 886 m
- Mont-Tramelan 11 km · 1086 m
Frequently asked questions about the weather: Franches-Montagnes
What is the weather like in Franches-Montagnes today?
The weather at the top of the page gives conditions at the centre of the region (1000 m); for a specific town pick it in the “Municipalities in the region” list — each page has its own hourly and 15-day forecast.
What is the climate of Franches-Montagnes?
At the centre of the region (1000 m) the mean annual temperature is 7.5 °C with 1117 mm of precipitation a year; the warmest month is July (15.7 °C) and the coldest January (0.2 °C). Valleys and summits differ markedly.
What is the warmest month in Franches-Montagnes?
The warmest month in Franches-Montagnes is July, averaging 15.7 °C (1991–2020 normal). The coldest is January at 0.2 °C.
How much does it rain in Franches-Montagnes per year?
Franches-Montagnes receives about 1117 mm of precipitation a year. The wettest month is August (111 mm), the driest March (77 mm).
When is the best time to visit Franches-Montagnes?
For warmth and sunshine: July (15.7 °C on average, — h of sun). The coldest month is January (0.2 °C). Check the 15-day forecast above for your dates.