What is the weather in Boniswil today?

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

What is the 15-day forecast for Boniswil?

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

Will it rain tomorrow in Boniswil?

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

What is the air quality in Boniswil?

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

Are there weather alerts for Boniswil?

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

At what altitude is Boniswil located?

Boniswil sits at around 473 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 Boniswil?

The warmest month in Boniswil is July, averaging 18.9 °C (1991–2020 normal). The coldest is January at 0.8 °C.

How much does it rain in Boniswil per year?

Boniswil receives about 1007 mm of precipitation a year. The wettest month is August (109 mm), the driest February (58 mm).

When is the best time to visit Boniswil?

For warmth and sunshine: July (18.9 °C on average, 225 h of sun). The coldest month is January (0.8 °C). Check the 15-day forecast above for your dates.

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Weather in Boniswil

Aargau, 473 m · continuously updated

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

Temperature · last 4 and next 28 hours

Boniswil weather: the next 24 hours

Updated hourly.

Boniswil weather hour by hour (48 h)

Boniswil 15-day forecast

Two-week trend.

Boniswil 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 Boniswil

Neighbouring municipalities, as the crow flies.

Leutwil1 km Hallwil2 km Birrwil2 km Seengen2 km Dürrenäsch3 km Zetzwil3 km Meisterschwanden4 km Leimbach (AG)4 km

7-day forecast for Boniswil

Today (Sunday 27 Sep) in Boniswil: mostly sunny, 11 to 26 °C, precipitation 0.0 mm (0 %), wind up to 6 km/h. Tomorrow: overcast, 14 to 27 °C.

Day	Weather	Min	Max	Precip.	Wind
Today	mostly sunny	11 °C	26 °C	0.0 mm	6 km/h
Tomorrow	overcast	14 °C	27 °C	0.0 mm	6 km/h
Tue 29 Sep	overcast	14 °C	26 °C	0.0 mm	6 km/h
Wed 30 Sep	overcast	16 °C	23 °C	0.3 mm	6 km/h
Thu 1 Oct	showers	15 °C	18 °C	4.2 mm	5 km/h
Fri 2 Oct	fog	13 °C	20 °C	0.0 mm	9 km/h
Sat 3 Oct	fog	14 °C	21 °C	0.0 mm	4 km/h

Forecast updated on 27.09.2026 at 04:37 (Open-Meteo model, elevation 473 m). The interactive block at the top refreshes hourly and covers 16 days.

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

Hourly weather in Boniswil

Sunday 27 Sep in Boniswil, hour by hour: sunny in the morning, sunny in the afternoon, sunny in the evening. Low 12 °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	16 °C	4 km/h
01:00	sunny	16 °C	3 km/h
02:00	sunny	15 °C	2 km/h
03:00	sunny	15 °C	2 km/h
04:00	sunny	14 °C	2 km/h
05:00	sunny	13 °C	1 km/h
06:00	sunny	13 °C	1 km/h
07:00	sunny	12 °C	1 km/h
08:00	sunny	12 °C	1 km/h
09:00	sunny	13 °C	0 km/h
10:00	sunny	16 °C	1 km/h
11:00	sunny	18 °C	2 km/h
12:00	sunny	21 °C	1 km/h
13:00	sunny	24 °C	2 km/h
14:00	sunny	25 °C	6 km/h
15:00	sunny	26 °C	6 km/h
16:00	sunny	27 °C	6 km/h
17:00	sunny	27 °C	4 km/h
18:00	sunny	26 °C	2 km/h
19:00	sunny	23 °C	5 km/h
20:00	sunny	21 °C	5 km/h
21:00	sunny	20 °C	5 km/h
22:00	mostly sunny	19 °C	6 km/h
23:00	partly cloudy	19 °C	5 km/h

Hourly forecast issued 27.09.2026 for Boniswil (473 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Boniswil weather tomorrow

Tomorrow, Monday 28 Sep, in Boniswil: overcast, 14 to 27 °C, wind up to 6 km/h. No precipitation expected.

Boniswil weekend weather

This weekend in Boniswil: Saturday fog, 14 to 21 °C; Sunday mostly sunny, 11 to 26 °C.

Will it rain in Boniswil this week?

Yes: 1 day with precipitation is expected in Boniswil over the next 7 days, 4.5 mm in total. Wettest day: Thursday 1 Oct (4.2 mm).

The best day to go out in Boniswil

The best day of the next 7 in Boniswil: Sunday 27 Sep, mostly sunny, up to 26 °C.

The last 7 days in Boniswil

From 20 Sep to 26 Sep: 16.5 °C on average, 2.3 °C above the September normal (14.2 °C), 0 mm of precipitation (7-day normal: 18 mm). Warmest day: saturday 26 Sep (26 °C); coolest night: wednesday 23 Sep (8 °C).

Day	Min	Max
Sun 20 Sep	12 °C	25 °C
Mon 21 Sep	14 °C	20 °C
Tue 22 Sep	9 °C	20 °C
Wed 23 Sep	8 °C	22 °C
Thu 24 Sep	11 °C	21 °C
Fri 25 Sep	9 °C	22 °C
Sat 26 Sep	10 °C	26 °C

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

Climate of Boniswil: 1991–2020 normals

In Boniswil (473 m), the mean annual temperature is 9.6 °C. The warmest month is July (18.9 °C on average) and the coldest January (0.8 °C). About 1007 mm of precipitation falls per year, peaking in August (109 mm) with a minimum in February (58 mm). The sun shines for about 1549 hours a year, mostly in July (225 h). On average there are 78 frost days and 15 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 32.4 °C and the absolute minimum −8.9 °C.

9.6 °CMean annual temperature

1007 mmPrecipitation per year

1549 hSunshine hours per year

78Frost days per year

56Summer 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	0.8 °C	10.9 °C	−8.9 °C	69	41	20	0
Feb	1.5 °C	13.2 °C	−8.3 °C	58	74	18	0
Mar	5.5 °C	18.6 °C	−4.9 °C	67	133	11	0
Apr	9.4 °C	23.2 °C	−1.6 °C	71	169	3	1
May	13.5 °C	27.2 °C	2.6 °C	106	183	0	5
Jun	17.2 °C	30.8 °C	6.4 °C	100	205	0	13
Jul	18.9 °C	32.4 °C	8.9 °C	108	225	0	18
Aug	18.4 °C	31.3 °C	8.3 °C	109	208	0	16
Sep	14.2 °C	26.3 °C	4.3 °C	76	151	0	5
Oct	9.8 °C	21.2 °C	0.2 °C	79	86	1	0
Nov	4.7 °C	15.2 °C	−3.9 °C	75	43	8	0
Dec	1.6 °C	11.4 °C	−7.6 °C	88	31	17	0
Year	9.6 °C	32.4 °C	−8.9 °C	1007	1549	78	56

Source: MeteoSwiss open data (1991–2020 normals) — stations Buchs / Aarau (12 km, 387 m), Gösgen (17 km, 380 m), Lägern (25 km, 845 m), adjusted to the elevation of Boniswil (473 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.