What is the weather in Altendorf today?

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

What is the 15-day forecast for Altendorf?

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

Will it rain tomorrow in Altendorf?

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

What is the air quality in Altendorf?

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

Are there weather alerts for Altendorf?

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

At what altitude is Altendorf located?

Altendorf sits at around 757 m above sea level in the canton of Schwyz. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.

What is the warmest month in Altendorf?

The warmest month in Altendorf is July, averaging 17.1 °C (1991–2020 normal). The coldest is January at −0.7 °C.

How much does it rain in Altendorf per year?

Altendorf receives about 1600 mm of precipitation a year. The wettest month is July (186 mm), the driest January (94 mm).

When is the best time to visit Altendorf?

For warmth and sunshine: July (17.1 °C on average, 217 h of sun). The coldest month is January (−0.7 °C). Check the 15-day forecast above for your dates.

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Home › Schwyz › Altendorf

Weather in Altendorf

Schwyz, 757 m · continuously updated

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Wind: –
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Rain ahead: –
Sunset: –

Temperature · last 4 and next 28 hours

Altendorf weather: the next 24 hours

Updated hourly.

Altendorf weather hour by hour (48 h)

Altendorf 15-day forecast

Two-week trend.

Altendorf 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 Altendorf

Neighbouring municipalities, as the crow flies.

Galgenen5 km Lachen5 km Vorderthal6 km Wangen (SZ)7 km Schübelbach7 km Freienbach7 km Einsiedeln8 km Feusisberg9 km

7-day forecast for Altendorf

Today (Sunday 27 Sep) in Altendorf: mostly sunny, 14 to 23 °C, precipitation 0.0 mm (0 %), wind up to 10 km/h. Tomorrow: partly cloudy, 15 to 24 °C.

Day	Weather	Min	Max	Precip.	Wind
Today	mostly sunny	14 °C	23 °C	0.0 mm	10 km/h
Tomorrow	partly cloudy	15 °C	24 °C	0.0 mm	10 km/h
Tue 29 Sep	overcast	15 °C	24 °C	0.0 mm	9 km/h
Wed 30 Sep	overcast	16 °C	24 °C	0.1 mm	8 km/h
Thu 1 Oct	light rain	15 °C	17 °C	4.2 mm	7 km/h
Fri 2 Oct	fog	13 °C	18 °C	0.3 mm	7 km/h
Sat 3 Oct	overcast	11 °C	19 °C	0.0 mm	6 km/h

Forecast updated on 27.09.2026 at 04:37 (Open-Meteo model, elevation 757 m). The interactive block at the top refreshes hourly and covers 16 days.

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

Hourly weather in Altendorf

Sunday 27 Sep in Altendorf, hour by hour: sunny in the morning, sunny in the afternoon, sunny in the evening. Low 14 °C around 00:00, high 24 °C around 16:00. No rainy hour.

Show the 24-hour table

Time	Weather	Temp.	Wind
00:00	sunny	14 °C	10 km/h
01:00	sunny	14 °C	9 km/h
02:00	sunny	14 °C	9 km/h
03:00	sunny	14 °C	9 km/h
04:00	sunny	15 °C	9 km/h
05:00	sunny	15 °C	9 km/h
06:00	sunny	15 °C	10 km/h
07:00	sunny	15 °C	9 km/h
08:00	sunny	15 °C	9 km/h
09:00	sunny	17 °C	8 km/h
10:00	sunny	20 °C	2 km/h
11:00	sunny	22 °C	2 km/h
12:00	sunny	22 °C	5 km/h
13:00	sunny	23 °C	7 km/h
14:00	sunny	23 °C	7 km/h
15:00	sunny	24 °C	5 km/h
16:00	mostly sunny	24 °C	4 km/h
17:00	mostly sunny	24 °C	2 km/h
18:00	sunny	23 °C	1 km/h
19:00	sunny	21 °C	4 km/h
20:00	sunny	18 °C	7 km/h
21:00	sunny	17 °C	9 km/h
22:00	sunny	17 °C	9 km/h
23:00	sunny	17 °C	9 km/h

Hourly forecast issued 27.09.2026 for Altendorf (757 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Altendorf weather tomorrow

Tomorrow, Monday 28 Sep, in Altendorf: partly cloudy, 15 to 24 °C, wind up to 10 km/h. No precipitation expected.

Altendorf weekend weather

This weekend in Altendorf: Saturday overcast, 11 to 19 °C; Sunday mostly sunny, 14 to 23 °C.

Will it rain in Altendorf this week?

Yes: 1 day with precipitation is expected in Altendorf over the next 7 days, 4.6 mm in total. Wettest day: Thursday 1 Oct (4.2 mm).

The best day to go out in Altendorf

The best day of the next 7 in Altendorf: Sunday 27 Sep, mostly sunny, up to 23 °C.

The last 7 days in Altendorf

From 20 Sep to 26 Sep: 14.7 °C on average, 1.9 °C above the September normal (12.8 °C), 0 mm of precipitation (7-day normal: 32 mm). Warmest day: saturday 26 Sep (22 °C); coolest night: wednesday 23 Sep (6 °C).

Day	Min	Max
Sun 20 Sep	13 °C	22 °C
Mon 21 Sep	11 °C	17 °C
Tue 22 Sep	7 °C	18 °C
Wed 23 Sep	6 °C	19 °C
Thu 24 Sep	12 °C	19 °C
Fri 25 Sep	9 °C	19 °C
Sat 26 Sep	12 °C	22 °C

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

Climate of Altendorf: 1991–2020 normals

In Altendorf (757 m), the mean annual temperature is 8.1 °C. The warmest month is July (17.1 °C on average) and the coldest January (−0.7 °C). About 1600 mm of precipitation falls per year, peaking in July (186 mm) with a minimum in January (94 mm). The sun shines for about 1596 hours a year, mostly in July (217 h). On average there are 114 frost days and 2 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 29.4 °C and the absolute minimum −13.1 °C.

8.1 °CMean annual temperature

1600 mmPrecipitation per year

1596 hSunshine hours per year

114Frost days per year

21Summer 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	−0.7 °C	10.9 °C	−13.1 °C	94	57	26	0
Feb	−0.2 °C	12.2 °C	−12.7 °C	94	82	23	0
Mar	3.5 °C	16.5 °C	−8.5 °C	114	130	17	0
Apr	7.6 °C	21.0 °C	−3.5 °C	110	170	8	0
May	11.7 °C	25.0 °C	1.4 °C	165	186	1	1
Jun	15.3 °C	28.2 °C	5.1 °C	176	201	0	5
Jul	17.1 °C	29.4 °C	7.6 °C	186	217	0	8
Aug	16.8 °C	28.8 °C	7.1 °C	185	202	0	7
Sep	12.8 °C	24.4 °C	3.0 °C	137	146	0	1
Oct	8.7 °C	21.4 °C	−1.1 °C	110	101	3	0
Nov	3.7 °C	16.9 °C	−6.9 °C	109	57	13	0
Dec	0.3 °C	12.3 °C	−11.3 °C	121	47	24	0
Year	8.1 °C	29.4 °C	−13.1 °C	1600	1596	114	21

Source: MeteoSwiss open data (1991–2020 normals) — stations Einsiedeln (5 km, 911 m), Wädenswil (14 km, 485 m), Glarus (22 km, 517 m), adjusted to the elevation of Altendorf (757 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.