What is the weather in Untersiggenthal today?

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

What is the 15-day forecast for Untersiggenthal?

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

Will it rain tomorrow in Untersiggenthal?

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

What is the air quality in Untersiggenthal?

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

Are there weather alerts for Untersiggenthal?

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

At what altitude is Untersiggenthal located?

Untersiggenthal sits at around 424 m above sea level in the canton of Aargau. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.

What is the warmest month in Untersiggenthal?

The warmest month in Untersiggenthal is July, averaging 18.9 °C (1991–2020 normal). The coldest is January at 1.0 °C.

How much does it rain in Untersiggenthal per year?

Untersiggenthal receives about 1042 mm of precipitation a year. The wettest month is December (105 mm), the driest September (70 mm).

When is the best time to visit Untersiggenthal?

For warmth and sunshine: July (18.9 °C on average, — h of sun). The coldest month is January (1.0 °C). Check the 15-day forecast above for your dates.

meteo-ch.ch Search a municipality…

Home › Aargau › Untersiggenthal

Weather in Untersiggenthal

Aargau, 424 m · continuously updated

–^°C

– –

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

Aare: 18.3 °C at Brugg river temperature · FOEN gauge 5.0 km away · 27.09. 00h

Temperature · last 4 and next 28 hours

Untersiggenthal weather: the next 24 hours

Updated hourly.

Untersiggenthal weather hour by hour (48 h)

Untersiggenthal 15-day forecast

Two-week trend.

Untersiggenthal weekend weather Rain radar

Sun and golden hours

Sunrise –, golden light until –

Sunset –, golden light from –

–

Air quality

–

European index, measured continuously.

UV index

–

Daily maximum — protection advised from 3.

Freezing level

–

Snow settles about 300 m below it.

Around Untersiggenthal

Neighbouring municipalities, as the crow flies.

Villigen1 km Rüfenach1 km Würenlingen2 km Baden3 km Gebenstorf4 km Endingen4 km Döttingen5 km Windisch5 km

7-day forecast for Untersiggenthal

Today (Sunday 27 Sep) in Untersiggenthal: fog, 8 to 27 °C, precipitation 0.0 mm (0 %), wind up to 9 km/h. Tomorrow: fog, 12 to 29 °C.

Day	Weather	Min	Max	Precip.	Wind
Today	fog	8 °C	27 °C	0.0 mm	9 km/h
Tomorrow	fog	12 °C	29 °C	0.0 mm	9 km/h
Tue 29 Sep	overcast	11 °C	27 °C	0.1 mm	6 km/h
Wed 30 Sep	overcast	15 °C	24 °C	0.3 mm	6 km/h
Thu 1 Oct	light rain	14 °C	18 °C	3.9 mm	4 km/h
Fri 2 Oct	fog	12 °C	21 °C	0.0 mm	7 km/h
Sat 3 Oct	fog	12 °C	21 °C	0.0 mm	4 km/h

Forecast updated on 27.09.2026 at 04:37 (Open-Meteo model, elevation 424 m). The interactive block at the top refreshes hourly and covers 16 days.

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

Hourly weather in Untersiggenthal

Sunday 27 Sep in Untersiggenthal, hour by hour: sunny in the morning, sunny in the afternoon, sunny in the evening. Low 7 °C around 08:00, high 27 °C around 16:00. No rainy hour.

Show the 24-hour table

Time	Weather	Temp.	Wind
00:00	sunny	13 °C	2 km/h
01:00	sunny	13 °C	3 km/h
02:00	sunny	12 °C	3 km/h
03:00	sunny	12 °C	2 km/h
04:00	sunny	11 °C	2 km/h
05:00	sunny	10 °C	0 km/h
06:00	sunny	8 °C	1 km/h
07:00	sunny	8 °C	0 km/h
08:00	fog	7 °C	1 km/h
09:00	sunny	9 °C	0 km/h
10:00	sunny	13 °C	1 km/h
11:00	sunny	17 °C	1 km/h
12:00	sunny	21 °C	3 km/h
13:00	mostly sunny	24 °C	6 km/h
14:00	sunny	26 °C	8 km/h
15:00	sunny	27 °C	9 km/h
16:00	sunny	27 °C	9 km/h
17:00	sunny	27 °C	9 km/h
18:00	sunny	26 °C	7 km/h
19:00	sunny	22 °C	6 km/h
20:00	sunny	18 °C	3 km/h
21:00	sunny	17 °C	2 km/h
22:00	partly cloudy	14 °C	2 km/h
23:00	partly cloudy	13 °C	1 km/h

Hourly forecast issued 27.09.2026 for Untersiggenthal (424 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Untersiggenthal weather tomorrow

Tomorrow, Monday 28 Sep, in Untersiggenthal: fog, 12 to 29 °C, wind up to 9 km/h. No precipitation expected.

Untersiggenthal weekend weather

This weekend in Untersiggenthal: Saturday fog, 12 to 21 °C; Sunday fog, 8 to 27 °C.

Will it rain in Untersiggenthal this week?

Yes: 1 day with precipitation is expected in Untersiggenthal over the next 7 days, 4.3 mm in total. Wettest day: Thursday 1 Oct (3.9 mm).

The best day to go out in Untersiggenthal

The best day of the next 7 in Untersiggenthal: Tuesday 29 Sep, overcast, up to 27 °C.

The last 7 days in Untersiggenthal

From 20 Sep to 26 Sep: 15.3 °C on average, 1.2 °C above the September normal (14.1 °C), 0 mm of precipitation (7-day normal: 16 mm). Warmest day: saturday 26 Sep (26 °C); coolest night: saturday 26 Sep (5 °C).

Day	Min	Max
Sun 20 Sep	9 °C	25 °C
Mon 21 Sep	13 °C	22 °C
Tue 22 Sep	7 °C	21 °C
Wed 23 Sep	7 °C	22 °C
Thu 24 Sep	6 °C	21 °C
Fri 25 Sep	7 °C	23 °C
Sat 26 Sep	5 °C	26 °C

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

Climate of Untersiggenthal: 1991–2020 normals

In Untersiggenthal (424 m), the mean annual temperature is 9.7 °C. The warmest month is July (18.9 °C on average) and the coldest January (1.0 °C). About 1042 mm of precipitation falls per year, peaking in December (105 mm) with a minimum in September (70 mm). On average there are 75 frost days and 16 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 32.7 °C and the absolute minimum −8.3 °C.

9.7 °CMean annual temperature

1042 mmPrecipitation per year

75Frost days per year

57Summer 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	1.0 °C	11.7 °C	−8.3 °C	89	18	0
Feb	1.7 °C	13.8 °C	−7.6 °C	77	18	0
Mar	5.4 °C	19.1 °C	−4.7 °C	79	13	0
Apr	9.4 °C	23.9 °C	−1.6 °C	73	3	1
May	13.6 °C	27.9 °C	2.7 °C	98	0	6
Jun	17.2 °C	31.5 °C	6.6 °C	90	0	13
Jul	18.9 °C	32.7 °C	9.0 °C	100	0	17
Aug	18.3 °C	31.7 °C	8.4 °C	89	0	16
Sep	14.1 °C	26.7 °C	4.6 °C	70	0	4
Oct	9.8 °C	21.5 °C	0.8 °C	84	1	0
Nov	4.8 °C	15.4 °C	−3.6 °C	88	6	0
Dec	1.7 °C	11.9 °C	−7.2 °C	105	15	0
Year	9.7 °C	32.7 °C	−8.3 °C	1042	75	57

Source: MeteoSwiss open data (1991–2020 normals) — stations Würenlingen / PSI (3 km, 334 m), Beznau (5 km, 326 m), Leibstadt (10 km, 341 m), adjusted to the elevation of Untersiggenthal (424 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.