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Weather in Grandfontaine

Jura, 571 m · continuously updated

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Temperature · last 4 and next 28 hours

Grandfontaine weather: the next 24 hours

Updated hourly.

Grandfontaine weather hour by hour (48 h)

Grandfontaine 15-day forecast

Two-week trend.

Grandfontaine weekend weatherRain radar

Sun and golden hours

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Sunset –, golden light from –

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Air quality

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European index, measured continuously.

UV index

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Daily maximum — protection advised from 3.

Freezing level

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Snow settles about 300 m below it.

Around Grandfontaine

Neighbouring municipalities, as the crow flies.

7-day forecast for Grandfontaine

Today (Saturday 14 Nov) in Grandfontaine: overcast, −1 to 7 °C, precipitation 0.0 mm (9 %), wind up to 12 km/h. Tomorrow: showers, 5 to 12 °C. The day runs 2.3 °C below the November norm (5.2 °C monthly mean, MeteoSwiss 1991–2020).

Show the 7-day table
DayWeatherMinMaxPrecip.Wind
Todayovercast−1 °C7 °C0.0 mm12 km/h
Tomorrowshowers5 °C12 °C6.5 mm26 km/h
Mon 16 Novshowers7 °C10 °C2.2 mm29 km/h
Tue 17 Novlight rain9 °C14 °C7.4 mm34 km/h
Wed 18 Novshowers9 °C11 °C8.9 mm34 km/h
Thu 19 Novshowers8 °C13 °C3.3 mm27 km/h
Fri 20 Novlight rain−2 °C7 °C5.1 mm30 km/h

Forecast updated on 14.11.2026 at 11:34 (Open-Meteo model, elevation 571 m). The interactive block at the top refreshes hourly and covers 16 days.

No rain expected today in Grandfontaine. Tomorrow: rain from 00:00 to 08:00. The 15-minute detail for the next two hours is shown on demand.

Hourly weather in Grandfontaine

Saturday 14 Nov in Grandfontaine, hour by hour: sunny in the morning, sunny in the afternoon, overcast in the evening. Low −1 °C around 07:00, high 7 °C around 14:00. No rainy hour.

Show the 24-hour table
TimeWeatherTemp.Precip.Wind
00:00sunny0 °C0.0 mm9 km/h
01:00sunny0 °C0.0 mm11 km/h
02:00sunny0 °C0.0 mm10 km/h
03:00sunny0 °C0.0 mm10 km/h
04:00sunny−1 °C0.0 mm10 km/h
05:00sunny−1 °C0.0 mm10 km/h
06:00sunny−1 °C0.0 mm10 km/h
07:00sunny−1 °C0.0 mm10 km/h
08:00sunny−1 °C0.0 mm10 km/h
09:00sunny0 °C0.0 mm10 km/h
10:00sunny1 °C0.0 mm12 km/h
11:00sunny3 °C0.0 mm12 km/h
12:00sunny5 °C0.0 mm12 km/h
13:00mostly sunny6 °C0.0 mm11 km/h
14:00sunny7 °C0.0 mm12 km/h
15:00sunny7 °C0.0 mm12 km/h
16:00sunny6 °C0.0 mm12 km/h
17:00sunny5 °C0.0 mm9 km/h
18:00sunny4 °C0.0 mm6 km/h
19:00overcast3 °C0.0 mm5 km/h
20:00overcast2 °C0.0 mm4 km/h
21:00overcast2 °C0.0 mm2 km/h
22:00overcast3 °C0.0 mm3 km/h
23:00overcast4 °C0.0 mm3 km/h

Hourly forecast issued 14.11.2026 for Grandfontaine (571 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Weather today in Grandfontaine

Today, Saturday 14 Nov in Grandfontaine: overcast, −1 to 7 °C, wind up to 12 km/h. No precipitation expected. That is 2.3 °C below the climate normal for November in Grandfontaine (5.2 °C average over 1991-2020).

Grandfontaine weather tomorrow

Tomorrow, Sunday 15 Nov, in Grandfontaine: showers, 5 to 12 °C, wind up to 26 km/h. Precipitation expected: 6.5 mm, 92 % probability.

What is the temperature in Grandfontaine?

Today in Grandfontaine (571 m): −1 to 7 °C. Tomorrow: 5 to 12 °C. Over the next 7 days, highs range from 7 to 14 °C, averaging 11 °C.

Grandfontaine weekend weather

This weekend in Grandfontaine: Saturday overcast, −1 to 7 °C; Sunday showers, 5 to 12 °C.

Will it rain in Grandfontaine this week?

Yes: 6 days with precipitation are expected in Grandfontaine over the next 7 days, 33.4 mm in total. Wettest day: Wednesday 18 Nov (8.9 mm).

What is the UV index in Grandfontaine?

Today in Grandfontaine (571 m), the UV index peaks at 2 (low) around midday. No particular protection is needed. In the mountains, radiation rises by about 10 % per 1,000 m, and snow reflects up to 80 % of it.

The best day to go out in Grandfontaine

The best day of the next 7 in Grandfontaine: Saturday 14 Nov, overcast, up to 7 °C.

Climate of Grandfontaine: 1991–2020 normals

In Grandfontaine (571 m), the mean annual temperature is 9.6 °C. The warmest month is July (18.3 °C on average) and the coldest January (1.4 °C). About 1037 mm of precipitation falls per year, peaking in May (106 mm) with a minimum in February (64 mm). The sun shines for about 1697 hours a year, mostly in July (236 h). On average there are 78 frost days and 6 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 31.3 °C and the absolute minimum −9.9 °C.

9.6 °CMean annual temperature
1037 mmPrecipitation per year
1697 hSunshine hours per year
78Frost days per year
34Summer days (≥ 25 °C)
JFMAMJJASOND

Mean monthly precipitation (mm) — bar height relative to the wettest month.

MonthMean TAbs. maxAbs. minPrecip. (mm)Sunshine (h)Frost daysSummer days
Jan1.4 °C12.5 °C−9.9 °C6663190
Feb2.0 °C13.8 °C−8.5 °C6485160
Mar5.5 °C18.2 °C−5.0 °C68133110
Apr9.0 °C22.0 °C−1.8 °C7716740
May12.7 °C25.5 °C2.1 °C10618602
Jun16.3 °C29.1 °C6.0 °C9821307
Jul18.3 °C31.3 °C8.5 °C92236012
Aug18.1 °C30.8 °C8.0 °C102221011
Sep14.0 °C25.6 °C4.8 °C8815802
Oct10.0 °C22.0 °C0.1 °C9811310
Nov5.2 °C16.7 °C−4.2 °C896790
Dec2.3 °C12.9 °C−8.2 °C8955170
Year9.6 °C31.3 °C−9.9 °C103716977834

Grandfontaine climate month by month

January in Grandfontaine
1.4 °C on average, 66 mm of rainfall and 63 h of sunshine. 19 frost days.
February in Grandfontaine
2.0 °C on average, 64 mm of rainfall and 85 h of sunshine. 16 frost days.
March in Grandfontaine
5.5 °C on average, 68 mm of rainfall and 133 h of sunshine. 11 frost days.
April in Grandfontaine
9.0 °C on average, 77 mm of rainfall and 167 h of sunshine. 4 frost days. 0 summer days (≥ 25 °C).
May in Grandfontaine
12.7 °C on average, 106 mm of rainfall and 186 h of sunshine. 0 frost days. 2 summer days (≥ 25 °C).
June in Grandfontaine
16.3 °C on average, 98 mm of rainfall and 213 h of sunshine. 7 summer days (≥ 25 °C).
July in Grandfontaine
18.3 °C on average, 92 mm of rainfall and 236 h of sunshine. 12 summer days (≥ 25 °C).
August in Grandfontaine
18.1 °C on average, 102 mm of rainfall and 221 h of sunshine. 11 summer days (≥ 25 °C).
September in Grandfontaine
14.0 °C on average, 88 mm of rainfall and 158 h of sunshine. 2 summer days (≥ 25 °C).
October in Grandfontaine
10.0 °C on average, 98 mm of rainfall and 113 h of sunshine. 1 frost days. 0 summer days (≥ 25 °C).
November in Grandfontaine
5.2 °C on average, 89 mm of rainfall and 67 h of sunshine. 9 frost days.
December in Grandfontaine
2.3 °C on average, 89 mm of rainfall and 55 h of sunshine. 17 frost days.

At what altitude is Grandfontaine located?

Grandfontaine sits at around 571 m above sea level in the canton of Jura. This elevation directly affects temperatures, the rain-snow line and snow cover: on average, the temperature drops by about 0.55 °C per 100 m of altitude.

What is the warmest month in Grandfontaine?

The warmest month in Grandfontaine is July, averaging 18.3 °C; the coldest is January, at 1.4 °C. The annual mean is 9.6 °C (MeteoSwiss 1991–2020 normals, reference station Fahy).

How much does it rain in Grandfontaine per year?

Grandfontaine receives about 1037 mm of precipitation a year, or 86 mm a month on average. The wettest month is May (106 mm) and the driest February (64 mm), according to the MeteoSwiss 1991–2020 normals.

How many frost days does Grandfontaine have?

Grandfontaine averages 78 frost days a year, most of them in January (19 days). Conversely, 34 summer days exceed 25 °C, 6 of them above 30 °C. Mean values from the MeteoSwiss 1991–2020 normals.

How many hours of sunshine does Grandfontaine get per year?

The sun shines for about 1697 hours a year in Grandfontaine. The sunniest month is July (236 h) and the least sunny December (55 h), according to the MeteoSwiss 1991–2020 normals.

How big is the temperature difference between summer and winter in Grandfontaine?

In Grandfontaine, the monthly mean rises from 1.4 °C in January to 18.3 °C in July: a 16.9 °C gap between the coldest and the warmest month. Absolute extremes over 1991–2020 range from −9.9 °C to 31.3 °C.

When is the best time to visit Grandfontaine?

For warmth and sunshine: July (18.3 °C on average, 236 h of sun). To avoid rain, February is the driest month (64 mm). The coldest month is January (1.4 °C).

Source: MeteoSwiss open data (1991–2020 normals) — stations Fahy (4 km, 596 m), Chasseral (30 km, 1594 m), Delémont (32 km, 439 m), adjusted to the elevation of Grandfontaine (571 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.