What is the weather in Simplon today?

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

What is the 15-day forecast for Simplon?

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

Will it rain tomorrow in Simplon?

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

What is the air quality in Simplon?

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

Are there weather alerts for Simplon?

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

At what altitude is Simplon located?

Simplon sits at around 1804 m above sea level in the canton of Valais. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.

What is the warmest month in Simplon?

The warmest month in Simplon is July, averaging 13.2 °C (1991–2020 normal). The coldest is January at −4.3 °C.

How much does it rain in Simplon per year?

Simplon receives about 684 mm of precipitation a year. The wettest month is May (72 mm), the driest February (39 mm).

When is the best time to visit Simplon?

For warmth and sunshine: July (13.2 °C on average, — h of sun). The coldest month is January (−4.3 °C). Check the 15-day forecast above for your dates.

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Home › Valais › Simplon

Weather in Simplon

Valais, 1804 m · continuously updated

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

Temperature · last 4 and next 28 hours

Simplon weather: the next 24 hours

Updated hourly.

Simplon weather hour by hour (48 h)

Simplon 15-day forecast

Two-week trend.

Simplon 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 Simplon

Neighbouring municipalities, as the crow flies.

Zwischbergen4 km Saas-Grund10 km Eisten12 km Staldenried13 km Brig-Glis14 km Ried-Brig14 km Saas-Balen14 km Termen14 km

7-day forecast for Simplon

Today (Sunday 27 Sep) in Simplon: fog, 6 to 16 °C, precipitation 0.0 mm (0 %), wind up to 10 km/h. Tomorrow: fog, 6 to 17 °C.

Day	Weather	Min	Max	Precip.	Wind
Today	fog	6 °C	16 °C	0.0 mm	10 km/h
Tomorrow	fog	6 °C	17 °C	0.0 mm	11 km/h
Tue 29 Sep	fog	7 °C	12 °C	0.0 mm	9 km/h
Wed 30 Sep	fog	7 °C	9 °C	0.0 mm	8 km/h
Thu 1 Oct	light rain	7 °C	10 °C	6.9 mm	8 km/h
Fri 2 Oct	fog	8 °C	11 °C	0.0 mm	8 km/h
Sat 3 Oct	fog	7 °C	12 °C	0.0 mm	10 km/h

Forecast updated on 27.09.2026 at 04:37 (Open-Meteo model, elevation 1804 m). The interactive block at the top refreshes hourly and covers 16 days.

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

Hourly weather in Simplon

Sunday 27 Sep in Simplon, hour by hour: sunny in the morning, mostly sunny in the afternoon, mostly sunny in the evening. Low 5 °C around 05:00, high 16 °C around 14:00. No rainy hour.

Show the 24-hour table

Time	Weather	Temp.	Wind
00:00	sunny	8 °C	2 km/h
01:00	sunny	8 °C	1 km/h
02:00	sunny	7 °C	3 km/h
03:00	sunny	6 °C	2 km/h
04:00	sunny	6 °C	1 km/h
05:00	sunny	5 °C	2 km/h
06:00	sunny	6 °C	1 km/h
07:00	sunny	7 °C	3 km/h
08:00	sunny	6 °C	1 km/h
09:00	sunny	8 °C	3 km/h
10:00	sunny	11 °C	1 km/h
11:00	sunny	14 °C	4 km/h
12:00	sunny	15 °C	8 km/h
13:00	sunny	16 °C	10 km/h
14:00	mostly sunny	16 °C	11 km/h
15:00	mostly sunny	16 °C	11 km/h
16:00	mostly sunny	16 °C	10 km/h
17:00	mostly sunny	15 °C	9 km/h
18:00	mostly sunny	14 °C	7 km/h
19:00	mostly sunny	12 °C	3 km/h
20:00	mostly sunny	10 °C	1 km/h
21:00	fog	8 °C	3 km/h
22:00	mostly sunny	8 °C	2 km/h
23:00	mostly sunny	8 °C	2 km/h

Hourly forecast issued 27.09.2026 for Simplon (1804 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Simplon weather tomorrow

Tomorrow, Monday 28 Sep, in Simplon: fog, 6 to 17 °C, wind up to 11 km/h. No precipitation expected.

Simplon weekend weather

This weekend in Simplon: Saturday fog, 7 to 12 °C; Sunday fog, 6 to 16 °C.

Will it rain in Simplon this week?

Yes: 1 day with precipitation is expected in Simplon over the next 7 days, 6.9 mm in total. Wettest day: Thursday 1 Oct (6.9 mm).

The best day to go out in Simplon

The best day of the next 7 in Simplon: Monday 28 Sep, fog, up to 17 °C.

The last 7 days in Simplon

From 20 Sep to 26 Sep: 13.1 °C on average, 4.1 °C above the September normal (9.0 °C), 0 mm of precipitation (7-day normal: 11 mm). Warmest day: sunday 20 Sep (19 °C); coolest night: wednesday 23 Sep (5 °C).

Day	Min	Max
Sun 20 Sep	6 °C	19 °C
Mon 21 Sep	11 °C	18 °C
Tue 22 Sep	8 °C	18 °C
Wed 23 Sep	5 °C	17 °C
Thu 24 Sep	10 °C	16 °C
Fri 25 Sep	11 °C	18 °C
Sat 26 Sep	7 °C	19 °C

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

Climate of Simplon: 1991–2020 normals

In Simplon (1804 m), the mean annual temperature is 4.2 °C. The warmest month is July (13.2 °C on average) and the coldest January (−4.3 °C). About 684 mm of precipitation falls per year, peaking in May (72 mm) with a minimum in February (39 mm). On average there are 139 frost days per year. The mean monthly maximum reaches 25.2 °C and the absolute minimum −15.1 °C.

4.2 °CMean annual temperature

684 mmPrecipitation per year

139Frost days per year

15Summer days (≥ 25 °C)

JFMAMJJASOND

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	−4.3 °C	6.4 °C	−15.1 °C	55	29	0
Feb	−3.6 °C	8.7 °C	−14.5 °C	39	25	0
Mar	−0.0 °C	12.3 °C	−11.5 °C	45	21	0
Apr	3.5 °C	15.2 °C	−8.0 °C	50	12	0
May	7.5 °C	19.9 °C	−3.7 °C	72	3	0
Jun	11.4 °C	24.4 °C	0.2 °C	59	0	4
Jul	13.2 °C	25.2 °C	2.7 °C	59	0	6
Aug	12.9 °C	25.0 °C	2.0 °C	65	0	5
Sep	9.0 °C	20.8 °C	−1.6 °C	46	1	0
Oct	5.1 °C	16.8 °C	−5.7 °C	62	6	0
Nov	−0.3 °C	11.8 °C	−11.1 °C	67	16	0
Dec	−3.5 °C	7.0 °C	−14.1 °C	65	26	0
Year	4.2 °C	25.2 °C	−15.1 °C	684	139	15

Source: MeteoSwiss open data (1991–2020 normals) — stations Grächen (18 km, 1605 m), Visp (20 km, 639 m), Eggishorn (25 km, 2892 m), adjusted to the elevation of Simplon (1804 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.