About Rossemaison
Rossemaison is a Swiss municipality located in the canton of Jura (JU), at 47.344° latitude and 7.343° longitude. The municipality is part of the Jura massif, continental climate, cold winters and moderate summers. Also known as Rossemaison, Rossemaison benefits from precise weather monitoring with hourly and 15-day forecasts.
Climate of Rossemaison
The climate in Rossemaison is characteristic of the Jura massif, continental climate, cold winters and moderate summers. Temperatures, precipitation and wind conditions vary throughout the year with local features linked to altitude and surrounding terrain. Our data comes from official weather stations and real-time Netatmo sensors for Rossemaison and neighboring municipalities.
On this page you will find the detailed weather forecast for Rossemaison: current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.
Climate of Rossemaison: 1991–2020 normals
In Rossemaison (460 m), the mean annual temperature is 9.7 °C. The warmest month is July (18.9 °C on average) and the coldest January (0.9 °C). About 924 mm of precipitation falls per year, peaking in August (101 mm) with a minimum in February (52 mm). The sun shines for about 1595 hours a year, mostly in July (237 h). On average there are 85 frost days and 14 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 33.2 °C and the absolute minimum −11.4 °C.
Mean monthly precipitation (mm) — bar height relative to the wettest month.
| Month | Mean T | Abs. max | Abs. min | Precip. (mm) | Sunshine (h) | Frost days | Summer days |
|---|---|---|---|---|---|---|---|
| Jan | 0.9 °C | 13.5 °C | −11.4 °C | 55 | 60 | 20 | 0 |
| Feb | 1.9 °C | 15.5 °C | −10.3 °C | 52 | 83 | 18 | 0 |
| Mar | 5.6 °C | 20.2 °C | −6.6 °C | 56 | 133 | 14 | 0 |
| Apr | 9.3 °C | 24.4 °C | −2.9 °C | 69 | 159 | 5 | 1 |
| May | 13.4 °C | 28.0 °C | 1.3 °C | 98 | 168 | 0 | 5 |
| Jun | 17.1 °C | 31.6 °C | 5.5 °C | 96 | 191 | 0 | 12 |
| Jul | 18.9 °C | 33.2 °C | 7.7 °C | 99 | 237 | 0 | 17 |
| Aug | 18.5 °C | 32.7 °C | 7.2 °C | 101 | 213 | 0 | 16 |
| Sep | 14.3 °C | 27.5 °C | 3.3 °C | 76 | 144 | 0 | 5 |
| Oct | 10.1 °C | 23.8 °C | −0.7 °C | 77 | 100 | 2 | 1 |
| Nov | 4.9 °C | 18.0 °C | −5.3 °C | 73 | 57 | 9 | 0 |
| Dec | 1.7 °C | 14.2 °C | −10.6 °C | 72 | 50 | 18 | 0 |
| Year | 9.7 °C | 33.2 °C | −11.4 °C | 924 | 1595 | 85 | 57 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Delémont (1 km, 439 m), Grenchen (19 km, 428 m), Basel / Binningen (28 km, 316 m), adjusted to the elevation of Rossemaison (460 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Nearby cities
Check the weather of cities near Rossemaison:
- Weather Courrendlin
- Weather Courtételle
- Weather Châtillon (JU)
- Weather Develier
- Weather Delémont
- Weather Roches (BE)
- Weather Courroux
- Weather Mettembert
- Weather Val Terbi
- Weather Soyhières
- Weather Perrefitte
- Weather Movelier
Frequently asked questions about weather in Rossemaison
What is the weather in Rossemaison today?
At the top of the page you will find the current temperature, precipitation and wind in Rossemaison, updated in real time.
What is the 15-day forecast for Rossemaison?
The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Rossemaison.
Will it rain tomorrow in Rossemaison?
Check the 48-hour hourly forecast to see exactly when precipitation is expected in Rossemaison.
What is the air quality in Rossemaison?
The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Rossemaison.
Are there weather alerts for Rossemaison?
Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.
At what altitude is Rossemaison located?
Rossemaison sits at around 460 m above sea level in the canton of Jura. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.
What is the warmest month in Rossemaison?
The warmest month in Rossemaison is July, averaging 18.9 °C (1991–2020 normal). The coldest is January at 0.9 °C.
How much does it rain in Rossemaison per year?
Rossemaison receives about 924 mm of precipitation a year. The wettest month is August (101 mm), the driest February (52 mm).
When is the best time to visit Rossemaison?
For warmth and sunshine: July (18.9 °C on average, 237 h of sun). The coldest month is January (0.9 °C). Check the 15-day forecast above for your dates.