What is the weather in Grandval today?

At the top of the page you will find the current temperature, precipitation and wind in Grandval, updated in real time.

What is the 15-day forecast for Grandval?

The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Grandval.

Will it rain tomorrow in Grandval?

Check the 48-hour hourly forecast to see exactly when precipitation is expected in Grandval.

What is the air quality in Grandval?

The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Grandval.

Are there weather alerts for Grandval?

Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.

At what altitude is Grandval located?

Grandval sits at around 603 m above sea level in the canton of Bern. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.

What is the warmest month in Grandval?

The warmest month in Grandval is July, averaging 18.2 °C (1991–2020 normal). The coldest is January at −0.0 °C.

How much does it rain in Grandval per year?

Grandval receives about 972 mm of precipitation a year. The wettest month is August (106 mm), the driest February (55 mm).

When is the best time to visit Grandval?

For warmth and sunshine: July (18.2 °C on average, 237 h of sun). The coldest month is January (−0.0 °C). Check the 15-day forecast above for your dates.

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Home › Bern › Grandval

Weather in Grandval

Bern, 603 m · continuously updated

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Wind: –
Humidity: –
Rain ahead: –
Sunset: –

Temperature · last 4 and next 28 hours

Grandval weather: the next 24 hours

Updated hourly.

Grandval weather hour by hour (48 h)

Grandval 15-day forecast

Two-week trend.

Grandval weekend weather Rain radar

Sun and golden hours

Sunrise –, golden light until –

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 Grandval

Neighbouring municipalities, as the crow flies.

Belprahon2 km Eschert2 km Crémines2 km Corcelles (BE)3 km Moutier4 km Roches (BE)7 km Welschenrohr-Gänsbrunnen7 km Selzach7 km

7-day forecast for Grandval

Today (Sunday 27 Sep) in Grandval: partly cloudy, 10 to 26 °C, precipitation 0.0 mm (0 %), wind up to 8 km/h. Tomorrow: overcast, 13 to 27 °C.

Day	Weather	Min	Max	Precip.	Wind
Today	partly cloudy	10 °C	26 °C	0.0 mm	8 km/h
Tomorrow	overcast	13 °C	27 °C	0.0 mm	7 km/h
Tue 29 Sep	overcast	15 °C	26 °C	0.2 mm	9 km/h
Wed 30 Sep	overcast	17 °C	24 °C	0.6 mm	7 km/h
Thu 1 Oct	light rain	15 °C	18 °C	5.7 mm	5 km/h
Fri 2 Oct	overcast	13 °C	19 °C	0.0 mm	12 km/h
Sat 3 Oct	fog	14 °C	22 °C	0.0 mm	6 km/h

Forecast updated on 27.09.2026 at 04:37 (Open-Meteo model, elevation 603 m). The interactive block at the top refreshes hourly and covers 16 days.

No rain expected in Grandval today or tomorrow. The 15-minute detail for the next two hours is shown on demand.

Hourly weather in Grandval

Sunday 27 Sep in Grandval, hour by hour: sunny in the morning, sunny in the afternoon, mostly sunny in the evening. Low 11 °C around 07:00, high 26 °C around 15:00. No rainy hour.

Show the 24-hour table

Time	Weather	Temp.	Wind
00:00	sunny	14 °C	5 km/h
01:00	sunny	14 °C	5 km/h
02:00	sunny	12 °C	4 km/h
03:00	sunny	11 °C	8 km/h
04:00	sunny	11 °C	6 km/h
05:00	sunny	11 °C	6 km/h
06:00	sunny	11 °C	5 km/h
07:00	sunny	11 °C	5 km/h
08:00	sunny	11 °C	5 km/h
09:00	sunny	15 °C	3 km/h
10:00	sunny	20 °C	0 km/h
11:00	sunny	23 °C	1 km/h
12:00	sunny	24 °C	2 km/h
13:00	sunny	26 °C	4 km/h
14:00	sunny	26 °C	7 km/h
15:00	sunny	26 °C	7 km/h
16:00	sunny	26 °C	7 km/h
17:00	sunny	26 °C	7 km/h
18:00	sunny	24 °C	5 km/h
19:00	mostly sunny	20 °C	6 km/h
20:00	mostly sunny	16 °C	6 km/h
21:00	partly cloudy	15 °C	4 km/h
22:00	mostly sunny	14 °C	5 km/h
23:00	partly cloudy	14 °C	4 km/h

Hourly forecast issued 27.09.2026 for Grandval (603 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Grandval weather tomorrow

Tomorrow, Monday 28 Sep, in Grandval: overcast, 13 to 27 °C, wind up to 7 km/h. No precipitation expected.

Grandval weekend weather

This weekend in Grandval: Saturday fog, 14 to 22 °C; Sunday partly cloudy, 10 to 26 °C.

Will it rain in Grandval this week?

Yes: 1 day with precipitation is expected in Grandval over the next 7 days, 6.5 mm in total. Wettest day: Thursday 1 Oct (5.7 mm).

The best day to go out in Grandval

The best day of the next 7 in Grandval: Sunday 27 Sep, partly cloudy, up to 26 °C.

The last 7 days in Grandval

From 20 Sep to 26 Sep: 15.1 °C on average, 1.6 °C above the September normal (13.5 °C), 0 mm of precipitation (7-day normal: 19 mm). Warmest day: saturday 26 Sep (25 °C); coolest night: tuesday 22 Sep (7 °C).

Day	Min	Max
Sun 20 Sep	10 °C	24 °C
Mon 21 Sep	10 °C	19 °C
Tue 22 Sep	7 °C	19 °C
Wed 23 Sep	7 °C	22 °C
Thu 24 Sep	10 °C	21 °C
Fri 25 Sep	8 °C	22 °C
Sat 26 Sep	9 °C	25 °C

Open-Meteo analyses of the last 7 days (models and assimilated observations), MeteoSwiss 1991–2020 normals. Updated nightly.

Climate of Grandval: 1991–2020 normals

In Grandval (603 m), the mean annual temperature is 8.9 °C. The warmest month is July (18.2 °C on average) and the coldest January (−0.0 °C). About 972 mm of precipitation falls per year, peaking in August (106 mm) with a minimum in February (55 mm). The sun shines for about 1595 hours a year, mostly in July (237 h). On average there are 88 frost days and 14 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 32.1 °C and the absolute minimum −11.8 °C.

8.9 °CMean annual temperature

972 mmPrecipitation per year

1595 hSunshine hours per year

88Frost days per year

55Summer days (≥ 25 °C)

JFMAMJJASOND

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	−0.0 °C	11.3 °C	−11.8 °C	59	60	21	0
Feb	0.9 °C	13.5 °C	−10.7 °C	55	83	19	0
Mar	4.7 °C	18.8 °C	−7.2 °C	59	133	14	0
Apr	8.5 °C	23.1 °C	−3.5 °C	72	159	5	1
May	12.6 °C	26.9 °C	0.8 °C	103	168	0	4
Jun	16.4 °C	30.5 °C	4.7 °C	101	191	0	12
Jul	18.2 °C	32.1 °C	7.1 °C	104	237	0	17
Aug	17.7 °C	31.4 °C	6.4 °C	106	213	0	16
Sep	13.5 °C	26.1 °C	2.6 °C	80	144	0	5
Oct	9.2 °C	21.7 °C	−1.5 °C	81	100	2	0
Nov	4.0 °C	15.7 °C	−6.1 °C	76	57	9	0
Dec	0.8 °C	11.9 °C	−10.6 °C	77	50	18	0
Year	8.9 °C	32.1 °C	−11.8 °C	972	1595	88	55

Source: MeteoSwiss open data (1991–2020 normals) — stations Delémont (10 km, 439 m), Grenchen (12 km, 428 m), Koppigen (23 km, 485 m), adjusted to the elevation of Grandval (603 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.