About Knonau
Knonau is a Swiss municipality located in the canton of Zurich (ZH), at 47.224° latitude and 8.463° longitude. The municipality is part of the Swiss plateau, transitional temperate oceanic climate with four distinct seasons. Also known as Knonau, Knonau benefits from precise weather monitoring with hourly and 15-day forecasts.
Climate of Knonau
The climate in Knonau 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 Knonau and neighboring municipalities.
On this page you will find the detailed weather forecast for Knonau: current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.
Climate of Knonau: 1991–2020 normals
In Knonau (434 m), the mean annual temperature is 10.3 °C. The warmest month is July (19.5 °C on average) and the coldest January (1.3 °C). About 1043 mm of precipitation falls per year, peaking in August (132 mm) with a minimum in January (51 mm). The sun shines for about 1694 hours a year, mostly in July (232 h). On average there are 74 frost days and 11 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 32.1 °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 | 1.3 °C | 11.8 °C | −7.8 °C | 51 | 57 | 20 | 0 |
| Feb | 2.2 °C | 13.8 °C | −7.5 °C | 52 | 87 | 17 | 0 |
| Mar | 6.1 °C | 19.1 °C | −4.3 °C | 54 | 143 | 10 | 0 |
| Apr | 10.1 °C | 23.6 °C | −1.2 °C | 79 | 180 | 2 | 1 |
| May | 14.2 °C | 27.8 °C | 3.3 °C | 123 | 195 | 0 | 4 |
| Jun | 18.0 °C | 31.4 °C | 7.6 °C | 124 | 212 | 0 | 12 |
| Jul | 19.5 °C | 32.1 °C | 9.8 °C | 129 | 232 | 0 | 16 |
| Aug | 19.1 °C | 31.6 °C | 9.1 °C | 132 | 216 | 0 | 14 |
| Sep | 15.0 °C | 27.2 °C | 5.2 °C | 88 | 162 | 0 | 5 |
| Oct | 10.6 °C | 22.4 °C | 1.1 °C | 78 | 107 | 1 | 0 |
| Nov | 5.1 °C | 16.4 °C | −3.8 °C | 63 | 58 | 8 | 0 |
| Dec | 2.0 °C | 12.6 °C | −8.4 °C | 70 | 45 | 17 | 0 |
| Year | 10.3 °C | 32.1 °C | −8.4 °C | 1043 | 1694 | 74 | 52 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Cham (4 km, 443 m), Wädenswil (16 km, 485 m), Zürich / Fluntern (19 km, 604 m), adjusted to the elevation of Knonau (434 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Nearby cities
Check the weather of cities near Knonau:
- Weather Mettmenstetten
- Weather Maschwanden
- Weather Cham
- Weather Rifferswil
- Weather Steinhausen
- Weather Kappel am Albis
- Weather Hünenberg
- Weather Baar
- Weather Aeugst am Albis
- Weather Obfelden
- Weather Mühlau
- Weather Sins
→ Nearby cities · Canton Zurich
Frequently asked questions about weather in Knonau
What is the weather in Knonau today?
At the top of the page you will find the current temperature, precipitation and wind in Knonau, updated in real time.
What is the 15-day forecast for Knonau?
The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Knonau.
Will it rain tomorrow in Knonau?
Check the 48-hour hourly forecast to see exactly when precipitation is expected in Knonau.
What is the air quality in Knonau?
The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Knonau.
Are there weather alerts for Knonau?
Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.
At what altitude is Knonau located?
Knonau sits at around 434 m above sea level in the canton of Zurich. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.
What is the warmest month in Knonau?
The warmest month in Knonau is July, averaging 19.5 °C (1991–2020 normal). The coldest is January at 1.3 °C.
How much does it rain in Knonau per year?
Knonau receives about 1043 mm of precipitation a year. The wettest month is August (132 mm), the driest January (51 mm).
When is the best time to visit Knonau?
For warmth and sunshine: July (19.5 °C on average, 232 h of sun). The coldest month is January (1.3 °C). Check the 15-day forecast above for your dates.