About Birr
Birr is a Swiss municipality located in the canton of Aargau (AG), at 47.432° latitude and 8.211° longitude. The municipality is part of the Swiss plateau, transitional temperate oceanic climate with four distinct seasons. Also known as Birr, Birr benefits from precise weather monitoring with hourly and 15-day forecasts.
Climate of Birr
The climate in Birr is characteristic of the Swiss plateau, transitional temperate oceanic climate with four distinct seasons. Temperatures, precipitation and wind conditions vary throughout the year with local features linked to altitude and surrounding terrain. Our data comes from official weather stations and real-time Netatmo sensors for Birr and neighboring municipalities.
On this page you will find the detailed weather forecast for Birr: current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.
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.
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.
Nearby cities
Check the weather of cities near Birr:
- Weather Brunegg
- Weather Lupfig
- Weather Birrhard
- Weather Wohlenschwil
- Weather Mägenwil
- Weather Holderbank (AG)
- Weather Mülligen
- Weather Othmarsingen
- Weather Habsburg
- Weather Birmenstorf (AG)
- Weather Brugg
- Weather Möriken-Wildegg
→ Nearby cities · Canton Aargau
Frequently asked questions about weather in Birr
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.