What is the weather in Untereggen today?

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

What is the 15-day forecast for Untereggen?

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

Will it rain tomorrow in Untereggen?

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

What is the air quality in Untereggen?

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

Are there weather alerts for Untereggen?

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

At what altitude is Untereggen located?

Untereggen sits at around 640 m above sea level in the canton of St. Gallen. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.

What is the warmest month in Untereggen?

The warmest month in Untereggen is July, averaging 18.2 °C (1991–2020 normal). The coldest is January at 0.6 °C.

How much does it rain in Untereggen per year?

Untereggen receives about 1294 mm of precipitation a year. The wettest month is August (166 mm), the driest February (59 mm).

When is the best time to visit Untereggen?

For warmth and sunshine: July (18.2 °C on average, 224 h of sun). The coldest month is January (0.6 °C). Check the 15-day forecast above for your dates.

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Home › St. Gallen › Untereggen

Weather in Untereggen

St. Gallen, 640 m · continuously updated

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

Goldach: 12.8 °C at Goldach, Bleiche river temperature · FOEN gauge 4.0 km away · 27.09. 00h

Temperature · last 4 and next 28 hours

Untereggen weather: the next 24 hours

Updated hourly.

Untereggen weather hour by hour (48 h)

Untereggen 15-day forecast

Two-week trend.

Untereggen 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 Untereggen

Neighbouring municipalities, as the crow flies.

Eggersriet1 km Rehetobel2 km Goldach3 km Speicher3 km Mörschwil3 km Rorschacherberg4 km Rorschach4 km Grub (AR)4 km

7-day forecast for Untereggen

Today (Sunday 27 Sep) in Untereggen: mostly sunny, 12 to 22 °C, precipitation 0.0 mm (0 %), wind up to 10 km/h. Tomorrow: partly cloudy, 14 to 25 °C.

Day	Weather	Min	Max	Precip.	Wind
Today	mostly sunny	12 °C	22 °C	0.0 mm	10 km/h
Tomorrow	partly cloudy	14 °C	25 °C	0.0 mm	9 km/h
Tue 29 Sep	overcast	15 °C	24 °C	0.0 mm	7 km/h
Wed 30 Sep	overcast	17 °C	24 °C	0.0 mm	5 km/h
Thu 1 Oct	light rain	14 °C	20 °C	4.8 mm	6 km/h
Fri 2 Oct	fog	13 °C	18 °C	0.0 mm	5 km/h
Sat 3 Oct	fog	11 °C	19 °C	0.0 mm	6 km/h

Forecast updated on 27.09.2026 at 04:37 (Open-Meteo model, elevation 640 m). The interactive block at the top refreshes hourly and covers 16 days.

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

Hourly weather in Untereggen

Sunday 27 Sep in Untereggen, hour by hour: sunny in the morning, sunny in the afternoon, sunny in the evening. Low 13 °C around 06:00, high 22 °C around 16:00. No rainy hour.

Show the 24-hour table

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

Hourly forecast issued 27.09.2026 for Untereggen (640 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Untereggen weather tomorrow

Tomorrow, Monday 28 Sep, in Untereggen: partly cloudy, 14 to 25 °C, wind up to 9 km/h. No precipitation expected.

Untereggen weekend weather

This weekend in Untereggen: Saturday fog, 11 to 19 °C; Sunday mostly sunny, 12 to 22 °C.

Will it rain in Untereggen this week?

Yes: 1 day with precipitation is expected in Untereggen over the next 7 days, 4.8 mm in total. Wettest day: Thursday 1 Oct (4.8 mm).

The best day to go out in Untereggen

The best day of the next 7 in Untereggen: Sunday 27 Sep, mostly sunny, up to 22 °C.

The last 7 days in Untereggen

From 20 Sep to 26 Sep: 14.0 °C on average, in line with the September normal (13.8 °C), 0 mm of precipitation (7-day normal: 29 mm). Warmest day: sunday 20 Sep (22 °C); coolest night: tuesday 22 Sep (6 °C).

Day	Min	Max
Sun 20 Sep	13 °C	22 °C
Mon 21 Sep	10 °C	17 °C
Tue 22 Sep	6 °C	17 °C
Wed 23 Sep	7 °C	17 °C
Thu 24 Sep	11 °C	19 °C
Fri 25 Sep	7 °C	17 °C
Sat 26 Sep	10 °C	21 °C

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

Climate of Untereggen: 1991–2020 normals

In Untereggen (640 m), the mean annual temperature is 9.3 °C. The warmest month is July (18.2 °C on average) and the coldest January (0.6 °C). About 1294 mm of precipitation falls per year, peaking in August (166 mm) with a minimum in February (59 mm). The sun shines for about 1599 hours a year, mostly in July (224 h). On average there are 85 frost days and 3 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 29.8 °C and the absolute minimum −9.6 °C.

9.3 °CMean annual temperature

1294 mmPrecipitation per year

1599 hSunshine hours per year

85Frost days per year

28Summer 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	0.6 °C	12.4 °C	−9.6 °C	61	56	21	0
Feb	1.4 °C	13.2 °C	−8.8 °C	59	79	18	0
Mar	4.9 °C	17.6 °C	−5.4 °C	78	131	12	0
Apr	8.8 °C	21.6 °C	−2.0 °C	92	166	4	0
May	13.0 °C	25.9 °C	2.8 °C	141	184	0	2
Jun	16.5 °C	28.7 °C	6.7 °C	154	198	0	7
Jul	18.2 °C	29.8 °C	9.3 °C	157	224	0	10
Aug	17.9 °C	29.1 °C	8.6 °C	166	205	0	9
Sep	13.8 °C	24.5 °C	4.9 °C	123	151	0	1
Oct	9.7 °C	21.2 °C	0.6 °C	95	100	1	0
Nov	4.7 °C	17.0 °C	−4.4 °C	84	58	9	0
Dec	1.6 °C	13.5 °C	−8.3 °C	83	47	19	0
Year	9.3 °C	29.8 °C	−9.6 °C	1294	1599	85	28

Source: MeteoSwiss open data (1991–2020 normals) — stations St. Gallen (5 km, 776 m), Altenrhein (9 km, 398 m), Güttingen (21 km, 440 m), adjusted to the elevation of Untereggen (640 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.