Detailed weather forecast for La Chaux-de-Fonds, Switzerland: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in La Chaux-de-Fonds
today🌧️20°💧 0.7 mm
Sun🌤️21°💧 1.7 mm
Mon🌧️23°💧 1.1 mm
Tue🌧️21°💧 2.1 mm
Wed🌧️13°💧 1.4 mm
Thu☁️16°💧 0.1 mm
Fri🌧️19°💧 2.6 mm
Sat🌧️17°💧 0.6 mm
Forecast vs 1991-2020 climate normal
How does the current forecast compare with normal?
We compare the coming days with weather usually observed at this time of year.
NASA POWER
Wednesday 9 Sept in La Chaux-de-Fonds, the forecast high is 13°C. Typical daytime temperatures at this time of year range from 15°C to 23°C, so it will be exceptionally cool. It is cooler than 91% of similar days.
20°Cnear normal
usually 16°C–23°C
night: warmer than usualrain: typical rainfallwind: lighter than usual
From 1981 to 2025, the 5-11 Sept period averaged 19°C by day. The coolest year was 1984 (13°C) and the warmest was 2023 (29°C). The current forecast averages 19°C - close to the historical median.
Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.
Weather warnings - La Chaux-de-Fonds
No active weather warnings for La Chaux-de-Fonds (region: Doubs). The national weather service is not forecasting dangerous conditions.
14-day forecast - La Chaux-de-Fonds
La Chaux-de-Fonds 30 & 45-day weather - long-range outlook
Next 16 days · forecast
19°
around 12° at night · days with rain: 8
Weeks 3-4 · avg for September
20°
around 10° at night · rain chance 47%
Weeks 5-7 · avg for October
14°
around 9° at night · rain chance 0%
The 30 & 45-day outlook for La Chaux-de-Fonds: the next 16 days are a numerical forecast updated daily - on average 19° by day and 12° at night. Further out we rely on multi-year climate averages: around 20° in September, and about 14° in October. Forecasts beyond two weeks are indicative only.
Day-by-day forecast for La Chaux-de-Fonds
Saturday5 September 2026
🌧️20°light rain
sunrise 06:56 · sunset 20:06 · night 14° · evening 21° · rain 0.66 mm · humidity 63% · wind 3 m/s · clouds 91%
Sunday6 September 2026
🌤️21°scattered clouds
sunrise 06:58 · sunset 20:04 · night 16° · evening 23° · rain 1.74 mm · humidity 44% · wind 2 m/s · clouds 40%
Monday7 September 2026
🌧️23°light rain
sunrise 06:59 · sunset 20:02 · night 15° · evening 19° · rain 1.05 mm · humidity 40% · wind 5 m/s · clouds 88%
Tuesday8 September 2026
🌧️21°light rain
sunrise 07:00 · sunset 20:00 · night 11° · evening 12° · rain 2.06 mm · humidity 47% · wind 4 m/s · clouds 98%
Wednesday9 September 2026
🌧️13°light rain
sunrise 07:02 · sunset 19:58 · night 7° · evening 9° · rain 1.43 mm · humidity 60% · wind 2 m/s · clouds 100%
Thursday10 September 2026
☁️16°broken clouds
sunrise 07:03 · sunset 19:56 · night 8° · evening 9° · rain 0.12 mm · humidity 41% · wind 4 m/s · clouds 83%
Friday11 September 2026
🌧️19°light rain
sunrise 07:04 · sunset 19:54 · night 11° · evening 10° · rain 2.58 mm · humidity 39% · wind 5 m/s · clouds 77%
Saturday12 September 2026
🌧️17°light rain
sunrise 07:06 · sunset 19:52 · night 11° · evening 12° · rain 0.57 mm · humidity 49% · wind 4 m/s · clouds 52%
Sunday13 September 2026
🌧️18°light rain
sunrise 07:07 · sunset 19:50 · night 10° · evening 12° · rain 0.15 mm · humidity 52% · wind 2 m/s · clouds 100%
Monday14 September 2026
☁️20°overcast clouds
sunrise 07:08 · sunset 19:48 · night 12° · evening 13° · rain 1.77 mm · humidity 49% · wind 2 m/s · clouds 88%
Tuesday15 September 2026
🌧️17°heavy rain
sunrise 07:10 · sunset 19:46 · night 11° · evening 14° · rain 30.75 mm · humidity 77% · wind 2 m/s · clouds 89%
Wednesday16 September 2026
🌧️15°moderate rain
sunrise 07:11 · sunset 19:44 · night 10° · evening 11° · rain 4.08 mm · humidity 66% · wind 5 m/s · clouds 77%
UV index in La Chaux-de-Fonds - is it safe to sunbathe?
Today the UV index in La Chaux-de-Fonds is 5 (moderate) - unprotected fair skin can burn in about 35 minutes. Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.
Pollen in La Chaux-de-Fonds - info for allergy sufferers
Today ragweed pollen is highest in La Chaux-de-Fonds - about 4 grains/m³, low level. Most allergy sufferers should not feel strong symptoms. Pollen levels are a CAMS model forecast and are indicative.
La Chaux-de-Fonds weather through the year
Warmest, driest months on average: April, May, June, July.
Upcoming public holidays in Switzerland: Christmas Day — 25 December · New Year's Day — 1 January · Ascension Day — 6 May.