About Olten
Olten is a Swiss municipality located in the canton of Solothurn (SO), at 47.341° latitude and 7.902° longitude. The municipality is part of the Swiss plateau, transitional temperate oceanic climate with four distinct seasons. Also known as Olten, Olten benefits from precise weather monitoring with hourly and 15-day forecasts.
Climate of Olten
The climate in Olten 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 Olten and neighboring municipalities.
On this page you will find the detailed weather forecast for Olten: current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.
Climate of Olten: 1991–2020 normals
In Olten (418 m), the mean annual temperature is 10.0 °C. The warmest month is July (19.2 °C on average) and the coldest January (1.3 °C). About 998 mm of precipitation falls per year, peaking in August (109 mm) with a minimum in February (57 mm). The sun shines for about 1678 hours a year, mostly in July (237 h). On average there are 80 frost days and 8 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 32.6 °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 | 11.5 °C | −8.4 °C | 67 | 56 | 20 | 0 |
| Feb | 2.0 °C | 13.6 °C | −7.9 °C | 57 | 84 | 18 | 0 |
| Mar | 5.8 °C | 19.0 °C | −4.6 °C | 65 | 139 | 12 | 0 |
| Apr | 9.6 °C | 23.4 °C | −1.3 °C | 74 | 173 | 4 | 0 |
| May | 13.7 °C | 27.4 °C | 2.9 °C | 103 | 192 | 0 | 3 |
| Jun | 17.4 °C | 31.0 °C | 6.8 °C | 99 | 215 | 0 | 9 |
| Jul | 19.2 °C | 32.6 °C | 9.5 °C | 108 | 237 | 0 | 14 |
| Aug | 18.7 °C | 31.4 °C | 8.9 °C | 109 | 217 | 0 | 12 |
| Sep | 14.5 °C | 26.5 °C | 5.0 °C | 78 | 159 | 0 | 3 |
| Oct | 10.2 °C | 21.6 °C | 0.9 °C | 78 | 101 | 1 | 0 |
| Nov | 5.1 °C | 15.6 °C | −3.4 °C | 74 | 58 | 8 | 0 |
| Dec | 2.0 °C | 12.0 °C | −7.0 °C | 84 | 47 | 18 | 0 |
| Year | 10.0 °C | 32.6 °C | −8.4 °C | 998 | 1678 | 80 | 41 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Gösgen (6 km, 380 m), Rünenberg (11 km, 611 m), Wynau (13 km, 422 m), adjusted to the elevation of Olten (418 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Nearby cities
Check the weather of cities near Olten:
- Weather Aarburg
- Weather Starrkirch-Wil
- Weather Trimbach
- Weather Oftringen
- Weather Wangen bei Olten
- Weather Rickenbach (SO)
- Weather Dulliken
- Weather Obergösgen
- Weather Winznau
- Weather Kappel (SO)
- Weather Rothrist
- Weather Walterswil (SO)
→ Nearby cities · Canton Solothurn
Frequently asked questions about weather in Olten
What is the weather in Olten today?
At the top of the page you will find the current temperature, precipitation and wind in Olten, updated in real time.
What is the 15-day forecast for Olten?
The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Olten.
Will it rain tomorrow in Olten?
Check the 48-hour hourly forecast to see exactly when precipitation is expected in Olten.
What is the air quality in Olten?
The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Olten.
Are there weather alerts for Olten?
Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.
At what altitude is Olten located?
Olten sits at around 418 m above sea level in the canton of Solothurn. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.
What is the warmest month in Olten?
The warmest month in Olten is July, averaging 19.2 °C (1991–2020 normal). The coldest is January at 1.3 °C.
How much does it rain in Olten per year?
Olten receives about 998 mm of precipitation a year. The wettest month is August (109 mm), the driest February (57 mm).
When is the best time to visit Olten?
For warmth and sunshine: July (19.2 °C on average, 237 h of sun). The coldest month is January (1.3 °C). Check the 15-day forecast above for your dates.