What is the weather in Geltwil today?

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

What is the 15-day forecast for Geltwil?

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

Will it rain tomorrow in Geltwil?

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

What is the air quality in Geltwil?

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

Are there weather alerts for Geltwil?

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

At what altitude is Geltwil located?

Geltwil sits at around 653 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 Geltwil?

The warmest month in Geltwil is July, averaging 18.4 °C (1991–2020 normal). The coldest is January at 0.2 °C.

How much does it rain in Geltwil per year?

Geltwil receives about 1124 mm of precipitation a year. The wettest month is August (140 mm), the driest January (54 mm).

When is the best time to visit Geltwil?

For warmth and sunshine: July (18.4 °C on average, 219 h of sun). The coldest month is January (0.2 °C). Check the 15-day forecast above for your dates.

meteo-ch.ch Search a municipality…

Home › Aargau › Geltwil

Weather in Geltwil

Aargau, 653 m · continuously updated

–^°C

– –

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

Temperature · last 4 and next 28 hours

Geltwil weather: the next 24 hours

Updated hourly.

Geltwil weather hour by hour (48 h)

Geltwil 15-day forecast

Two-week trend.

Geltwil 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 Geltwil

Neighbouring municipalities, as the crow flies.

Beinwil (Freiamt)3 km Buttwil3 km Muri (AG)3 km Auw4 km Merenschwand5 km Mühlau5 km Boswil6 km Aristau6 km

7-day forecast for Geltwil

Today (Sunday 27 Sep) in Geltwil: mostly sunny, 14 to 24 °C, precipitation 0.0 mm (0 %), wind up to 9 km/h. Tomorrow: partly cloudy, 16 to 24 °C.

Day	Weather	Min	Max	Precip.	Wind
Today	mostly sunny	14 °C	24 °C	0.0 mm	9 km/h
Tomorrow	partly cloudy	16 °C	24 °C	0.0 mm	8 km/h
Tue 29 Sep	overcast	13 °C	25 °C	0.0 mm	6 km/h
Wed 30 Sep	overcast	16 °C	23 °C	0.0 mm	7 km/h
Thu 1 Oct	light rain	13 °C	17 °C	2.7 mm	6 km/h
Fri 2 Oct	fog	12 °C	19 °C	0.0 mm	8 km/h
Sat 3 Oct	fog	12 °C	20 °C	0.0 mm	4 km/h

Forecast updated on 27.09.2026 at 04:37 (Open-Meteo model, elevation 653 m). The interactive block at the top refreshes hourly and covers 16 days.

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

Hourly weather in Geltwil

Sunday 27 Sep in Geltwil, hour by hour: sunny in the morning, sunny in the afternoon, sunny in the evening. Low 14 °C around 08:00, high 24 °C around 15:00. No rainy hour.

Show the 24-hour table

Time	Weather	Temp.	Wind
00:00	sunny	17 °C	4 km/h
01:00	sunny	17 °C	2 km/h
02:00	sunny	16 °C	1 km/h
03:00	sunny	16 °C	2 km/h
04:00	sunny	16 °C	1 km/h
05:00	sunny	15 °C	1 km/h
06:00	sunny	15 °C	3 km/h
07:00	sunny	14 °C	4 km/h
08:00	sunny	14 °C	5 km/h
09:00	sunny	16 °C	3 km/h
10:00	sunny	19 °C	0 km/h
11:00	sunny	20 °C	2 km/h
12:00	sunny	21 °C	2 km/h
13:00	mostly sunny	23 °C	3 km/h
14:00	mostly sunny	24 °C	3 km/h
15:00	sunny	24 °C	2 km/h
16:00	sunny	24 °C	2 km/h
17:00	sunny	24 °C	5 km/h
18:00	sunny	23 °C	5 km/h
19:00	sunny	21 °C	7 km/h
20:00	sunny	20 °C	8 km/h
21:00	sunny	20 °C	8 km/h
22:00	sunny	20 °C	9 km/h
23:00	mostly sunny	20 °C	8 km/h

Hourly forecast issued 27.09.2026 for Geltwil (653 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Geltwil weather tomorrow

Tomorrow, Monday 28 Sep, in Geltwil: partly cloudy, 16 to 24 °C, wind up to 8 km/h. No precipitation expected.

Geltwil weekend weather

This weekend in Geltwil: Saturday fog, 12 to 20 °C; Sunday mostly sunny, 14 to 24 °C.

Will it rain in Geltwil this week?

Yes: 1 day with precipitation is expected in Geltwil over the next 7 days, 2.7 mm in total. Wettest day: Thursday 1 Oct (2.7 mm).

The best day to go out in Geltwil

The best day of the next 7 in Geltwil: Sunday 27 Sep, mostly sunny, up to 24 °C.

The last 7 days in Geltwil

From 20 Sep to 26 Sep: 15.5 °C on average, 1.7 °C above the September normal (13.8 °C), 0 mm of precipitation (7-day normal: 22 mm). Warmest day: saturday 26 Sep (23 °C); coolest night: wednesday 23 Sep (7 °C).

Day	Min	Max
Sun 20 Sep	14 °C	23 °C
Mon 21 Sep	13 °C	18 °C
Tue 22 Sep	8 °C	18 °C
Wed 23 Sep	7 °C	20 °C
Thu 24 Sep	13 °C	20 °C
Fri 25 Sep	8 °C	20 °C
Sat 26 Sep	12 °C	23 °C

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

Climate of Geltwil: 1991–2020 normals

In Geltwil (653 m), the mean annual temperature is 9.2 °C. The warmest month is July (18.4 °C on average) and the coldest January (0.2 °C). About 1124 mm of precipitation falls per year, peaking in August (140 mm) with a minimum in January (54 mm). The sun shines for about 1610 hours a year, mostly in July (219 h). On average there are 74 frost days and 10 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 31.0 °C and the absolute minimum −9.0 °C.

9.2 °CMean annual temperature

1124 mmPrecipitation per year

1610 hSunshine hours per year

74Frost days per year

51Summer 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	0.2 °C	10.9 °C	−8.8 °C	54	55	20	0
Feb	1.1 °C	12.7 °C	−8.5 °C	56	84	18	0
Mar	5.0 °C	18.1 °C	−5.3 °C	61	138	10	0
Apr	9.0 °C	22.5 °C	−2.1 °C	85	169	2	1
May	13.1 °C	26.7 °C	2.3 °C	133	182	0	4
Jun	16.8 °C	30.2 °C	6.5 °C	135	197	0	12
Jul	18.4 °C	31.0 °C	8.9 °C	139	219	0	16
Aug	18.0 °C	30.4 °C	8.1 °C	140	207	0	14
Sep	13.8 °C	25.8 °C	4.3 °C	94	155	0	4
Oct	9.4 °C	21.1 °C	0.0 °C	83	104	1	0
Nov	4.1 °C	15.3 °C	−4.6 °C	68	57	7	0
Dec	0.9 °C	11.5 °C	−9.0 °C	75	43	17	0
Year	9.2 °C	31.0 °C	−9.0 °C	1124	1610	74	51

Source: MeteoSwiss open data (1991–2020 normals) — stations Cham (12 km, 443 m), Zürich / Fluntern (23 km, 604 m), Luzern (24 km, 454 m), adjusted to the elevation of Geltwil (653 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.