What is the weather in Therwil today?

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

What is the 15-day forecast for Therwil?

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

Will it rain tomorrow in Therwil?

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

What is the air quality in Therwil?

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

Are there weather alerts for Therwil?

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

At what altitude is Therwil located?

Therwil sits at around 307 m above sea level in the canton of Basel-Country. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.

What is the warmest month in Therwil?

The warmest month in Therwil is July, averaging 20.0 °C (1991–2020 normal). The coldest is January at 2.2 °C.

How much does it rain in Therwil per year?

Therwil receives about 842 mm of precipitation a year. The wettest month is May (97 mm), the driest February (45 mm).

When is the best time to visit Therwil?

For warmth and sunshine: July (20.0 °C on average, 235 h of sun). The coldest month is January (2.2 °C). Check the 15-day forecast above for your dates.

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Home › Basel-Country › Therwil

Weather in Therwil

Basel-Country, 307 m · continuously updated

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

Temperature · last 4 and next 28 hours

Therwil weather: the next 24 hours

Updated hourly.

Therwil weather hour by hour (48 h)

Therwil 15-day forecast

Two-week trend.

Therwil 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 Therwil

Neighbouring municipalities, as the crow flies.

Ettingen2 km Witterswil3 km Oberwil (BL)3 km Biel-Benken3 km Bättwil3 km Aesch (BL)4 km Pfeffingen4 km Reinach (BL)4 km

7-day forecast for Therwil

Today (Sunday 27 Sep) in Therwil: mostly sunny, 12 to 29 °C, precipitation 0.0 mm (0 %), wind up to 9 km/h. Tomorrow: overcast, 16 to 30 °C.

Day	Weather	Min	Max	Precip.	Wind
Today	mostly sunny	12 °C	29 °C	0.0 mm	9 km/h
Tomorrow	overcast	16 °C	30 °C	0.0 mm	10 km/h
Tue 29 Sep	overcast	14 °C	27 °C	0.0 mm	6 km/h
Wed 30 Sep	overcast	16 °C	25 °C	0.3 mm	5 km/h
Thu 1 Oct	light rain	16 °C	19 °C	5.7 mm	4 km/h
Fri 2 Oct	fog	14 °C	21 °C	0.0 mm	8 km/h
Sat 3 Oct	fog	14 °C	22 °C	0.0 mm	7 km/h

Forecast updated on 27.09.2026 at 04:37 (Open-Meteo model, elevation 307 m). The interactive block at the top refreshes hourly and covers 16 days.

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

Hourly weather in Therwil

Sunday 27 Sep in Therwil, hour by hour: sunny in the morning, sunny in the afternoon, sunny in the evening. Low 13 °C around 08:00, high 29 °C around 16:00. No rainy hour.

Show the 24-hour table

Time	Weather	Temp.	Wind
00:00	sunny	14 °C	0 km/h
01:00	sunny	14 °C	1 km/h
02:00	sunny	14 °C	2 km/h
03:00	sunny	14 °C	2 km/h
04:00	sunny	14 °C	2 km/h
05:00	sunny	13 °C	2 km/h
06:00	sunny	13 °C	2 km/h
07:00	sunny	13 °C	2 km/h
08:00	sunny	13 °C	2 km/h
09:00	sunny	14 °C	4 km/h
10:00	sunny	19 °C	3 km/h
11:00	sunny	22 °C	3 km/h
12:00	sunny	24 °C	5 km/h
13:00	sunny	26 °C	7 km/h
14:00	sunny	28 °C	6 km/h
15:00	sunny	29 °C	7 km/h
16:00	sunny	29 °C	6 km/h
17:00	mostly sunny	29 °C	7 km/h
18:00	sunny	28 °C	4 km/h
19:00	sunny	26 °C	3 km/h
20:00	mostly sunny	23 °C	3 km/h
21:00	mostly sunny	20 °C	2 km/h
22:00	sunny	18 °C	2 km/h
23:00	mostly sunny	18 °C	1 km/h

Hourly forecast issued 27.09.2026 for Therwil (307 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Therwil weather tomorrow

Tomorrow, Monday 28 Sep, in Therwil: overcast, 16 to 30 °C, wind up to 10 km/h. No precipitation expected.

Therwil weekend weather

This weekend in Therwil: Saturday fog, 14 to 22 °C; Sunday mostly sunny, 12 to 29 °C.

Will it rain in Therwil this week?

Yes: 1 day with precipitation is expected in Therwil over the next 7 days, 6.0 mm in total. Wettest day: Thursday 1 Oct (5.7 mm).

The best day to go out in Therwil

The best day of the next 7 in Therwil: Sunday 27 Sep, mostly sunny, up to 29 °C.

The last 7 days in Therwil

From 20 Sep to 26 Sep: 16.5 °C on average, 1.2 °C above the September normal (15.3 °C), 0 mm of precipitation (7-day normal: 16 mm). Warmest day: saturday 26 Sep (28 °C); coolest night: tuesday 22 Sep (7 °C).

Day	Min	Max
Sun 20 Sep	11 °C	26 °C
Mon 21 Sep	12 °C	21 °C
Tue 22 Sep	7 °C	22 °C
Wed 23 Sep	8 °C	24 °C
Thu 24 Sep	9 °C	23 °C
Fri 25 Sep	8 °C	24 °C
Sat 26 Sep	8 °C	28 °C

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

Climate of Therwil: 1991–2020 normals

In Therwil (307 m), the mean annual temperature is 10.9 °C. The warmest month is July (20.0 °C on average) and the coldest January (2.2 °C). About 842 mm of precipitation falls per year, peaking in May (97 mm) with a minimum in February (45 mm). The sun shines for about 1710 hours a year, mostly in July (235 h). On average there are 61 frost days and 14 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 33.2 °C and the absolute minimum −7.9 °C.

10.9 °CMean annual temperature

842 mmPrecipitation per year

1710 hSunshine hours per year

61Frost days per year

59Summer 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	2.2 °C	13.7 °C	−7.9 °C	48	67	16	0
Feb	3.3 °C	15.2 °C	−6.9 °C	45	89	14	0
Mar	7.0 °C	20.3 °C	−3.6 °C	50	139	8	0
Apr	10.7 °C	24.7 °C	−0.5 °C	64	169	2	1
May	14.6 °C	28.2 °C	3.8 °C	97	185	0	5
Jun	18.2 °C	31.8 °C	7.8 °C	87	210	0	13
Jul	20.0 °C	33.2 °C	10.1 °C	89	235	0	18
Aug	19.6 °C	32.3 °C	9.4 °C	89	218	0	16
Sep	15.3 °C	27.1 °C	5.6 °C	70	164	0	5
Oct	11.1 °C	23.0 °C	1.4 °C	74	112	1	0
Nov	6.1 °C	17.0 °C	−3.0 °C	65	67	6	0
Dec	3.0 °C	14.3 °C	−6.6 °C	65	55	15	0
Year	10.9 °C	33.2 °C	−7.9 °C	842	1710	61	59

Source: MeteoSwiss open data (1991–2020 normals) — stations Basel / Binningen (5 km, 316 m), St. Chrischona (13 km, 493 m), Delémont (22 km, 439 m), adjusted to the elevation of Therwil (307 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.