What is the weather in Birr today?

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

What is the 15-day forecast for Birr?

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

Will it rain tomorrow in Birr?

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

What is the air quality in Birr?

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

Are there weather alerts for Birr?

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

At what altitude is Birr located?

Birr sits at around 399 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 Birr?

The warmest month in Birr is July, averaging 19.2 °C (1991–2020 normal). The coldest is January at 1.2 °C.

How much does it rain in Birr per year?

Birr receives about 1009 mm of precipitation a year. The wettest month is July (101 mm), the driest February (68 mm).

When is the best time to visit Birr?

For warmth and sunshine: July (19.2 °C on average, 225 h of sun). The coldest month is January (1.2 °C). Check the 15-day forecast above for your dates.

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Home › Aargau › Birr

Weather in Birr

Aargau, 399 m · continuously updated

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

Reuss: 18.5 °C at Mellingen river temperature · FOEN gauge 4.7 km away · 27.09. 00h

Temperature · last 4 and next 28 hours

Birr weather: the next 24 hours

Updated hourly.

Birr weather hour by hour (48 h)

Birr 15-day forecast

Two-week trend.

Birr 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 Birr

Neighbouring municipalities, as the crow flies.

Brunegg1 km Lupfig2 km Birrhard2 km Wohlenschwil3 km Mägenwil3 km Holderbank (AG)3 km Mülligen3 km Othmarsingen3 km

7-day forecast for Birr

Today (Sunday 27 Sep) in Birr: partly cloudy, 9 to 27 °C, precipitation 0.0 mm (0 %), wind up to 8 km/h. Tomorrow: overcast, 12 to 28 °C.

Day	Weather	Min	Max	Precip.	Wind
Today	partly cloudy	9 °C	27 °C	0.0 mm	8 km/h
Tomorrow	overcast	12 °C	28 °C	0.0 mm	10 km/h
Tue 29 Sep	fog	9 °C	26 °C	0.1 mm	5 km/h
Wed 30 Sep	overcast	14 °C	24 °C	0.3 mm	5 km/h
Thu 1 Oct	light rain	14 °C	19 °C	4.2 mm	4 km/h
Fri 2 Oct	fog	13 °C	21 °C	0.0 mm	6 km/h
Sat 3 Oct	fog	14 °C	22 °C	0.0 mm	4 km/h

Forecast updated on 27.09.2026 at 04:37 (Open-Meteo model, elevation 399 m). The interactive block at the top refreshes hourly and covers 16 days.

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

Hourly weather in Birr

Sunday 27 Sep in Birr, hour by hour: sunny in the morning, sunny in the afternoon, sunny in the evening. Low 9 °C around 08:00, high 28 °C around 16:00. No rainy hour.

Show the 24-hour table

Time	Weather	Temp.	Wind
00:00	sunny	12 °C	1 km/h
01:00	sunny	12 °C	1 km/h
02:00	sunny	12 °C	0 km/h
03:00	sunny	12 °C	0 km/h
04:00	sunny	11 °C	0 km/h
05:00	sunny	11 °C	1 km/h
06:00	sunny	10 °C	1 km/h
07:00	sunny	9 °C	1 km/h
08:00	sunny	9 °C	2 km/h
09:00	sunny	10 °C	1 km/h
10:00	sunny	14 °C	1 km/h
11:00	sunny	18 °C	1 km/h
12:00	sunny	21 °C	2 km/h
13:00	sunny	24 °C	6 km/h
14:00	sunny	26 °C	7 km/h
15:00	sunny	27 °C	8 km/h
16:00	sunny	28 °C	8 km/h
17:00	sunny	28 °C	8 km/h
18:00	sunny	27 °C	6 km/h
19:00	sunny	23 °C	5 km/h
20:00	sunny	19 °C	3 km/h
21:00	sunny	16 °C	4 km/h
22:00	partly cloudy	15 °C	3 km/h
23:00	partly cloudy	14 °C	2 km/h

Hourly forecast issued 27.09.2026 for Birr (399 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Birr weather tomorrow

Tomorrow, Monday 28 Sep, in Birr: overcast, 12 to 28 °C, wind up to 10 km/h. No precipitation expected.

Birr weekend weather

This weekend in Birr: Saturday fog, 14 to 22 °C; Sunday partly cloudy, 9 to 27 °C.

Will it rain in Birr this week?

Yes: 1 day with precipitation is expected in Birr over the next 7 days, 4.6 mm in total. Wettest day: Thursday 1 Oct (4.2 mm).

The best day to go out in Birr

The best day of the next 7 in Birr: Sunday 27 Sep, partly cloudy, up to 27 °C.

The last 7 days in Birr

From 20 Sep to 26 Sep: 15.4 °C on average, in line with the September normal (14.4 °C), 0 mm of precipitation (7-day normal: 17 mm). Warmest day: saturday 26 Sep (26 °C); coolest night: saturday 26 Sep (6 °C).

Day	Min	Max
Sun 20 Sep	10 °C	25 °C
Mon 21 Sep	12 °C	21 °C
Tue 22 Sep	6 °C	21 °C
Wed 23 Sep	6 °C	22 °C
Thu 24 Sep	6 °C	22 °C
Fri 25 Sep	7 °C	23 °C
Sat 26 Sep	6 °C	26 °C

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

Climate of Birr: 1991–2020 normals

In Birr (399 m), the mean annual temperature is 9.9 °C. The warmest month is July (19.2 °C on average) and the coldest January (1.2 °C). About 1009 mm of precipitation falls per year, peaking in July (101 mm) with a minimum in February (68 mm). The sun shines for about 1549 hours a year, mostly in July (225 h). On average there are 76 frost days and 15 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 32.9 °C and the absolute minimum −8.4 °C.

9.9 °CMean annual temperature

1009 mmPrecipitation per year

1549 hSunshine hours per year

76Frost 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)	Sunshine (h)	Frost days	Summer days
Jan	1.2 °C	11.7 °C	−8.4 °C	80	41	19	0
Feb	1.9 °C	13.9 °C	−7.8 °C	68	74	18	0
Mar	5.7 °C	19.2 °C	−4.6 °C	73	133	12	0
Apr	9.7 °C	24.0 °C	−1.4 °C	70	169	3	1
May	13.8 °C	28.0 °C	2.9 °C	100	183	0	5
Jun	17.5 °C	31.6 °C	6.7 °C	92	205	0	13
Jul	19.2 °C	32.9 °C	9.1 °C	101	225	0	18
Aug	18.6 °C	31.9 °C	8.5 °C	95	208	0	16
Sep	14.4 °C	26.9 °C	4.6 °C	72	151	0	4
Oct	10.0 °C	21.7 °C	0.6 °C	80	86	1	0
Nov	5.0 °C	15.5 °C	−3.6 °C	82	43	7	0
Dec	1.9 °C	12.0 °C	−7.2 °C	96	31	16	0
Year	9.9 °C	32.9 °C	−8.4 °C	1009	1549	76	57

Source: MeteoSwiss open data (1991–2020 normals) — stations Buchs / Aarau (11 km, 387 m), Würenlingen / PSI (12 km, 334 m), Beznau (14 km, 326 m), adjusted to the elevation of Birr (399 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.