About Grandson
Grandson is a Swiss municipality located in the canton of Vaud (VD), at 46.812° latitude and 6.639° longitude. The municipality is part of the Lake Geneva region, temperate climate with lake influence, mild winters and warm summers. Also known as Grandson, Grandson benefits from precise weather monitoring with hourly and 15-day forecasts.
Climate of Grandson
The climate in Grandson is characteristic of the Lake Geneva region, temperate climate with lake influence, mild winters and warm summers. 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 Grandson and neighboring municipalities.
On this page you will find the detailed weather forecast for Grandson: current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.
Climate of Grandson: 1991–2020 normals
In Grandson (500 m), the mean annual temperature is 10.0 °C. The warmest month is July (18.6 °C on average) and the coldest January (2.3 °C). About 1019 mm of precipitation falls per year, peaking in December (98 mm) with a minimum in February (66 mm). The sun shines for about 1865 hours a year, mostly in July (249 h). On average there are 90 frost days and 14 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 30.6 °C and the absolute minimum −8.8 °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 | 2.3 °C | 12.5 °C | −8.8 °C | 80 | 68 | 20 | 0 |
| Feb | 2.5 °C | 13.7 °C | −8.5 °C | 66 | 93 | 19 | 0 |
| Mar | 5.5 °C | 17.4 °C | −5.2 °C | 69 | 158 | 15 | 0 |
| Apr | 9.0 °C | 21.4 °C | −2.0 °C | 71 | 182 | 5 | 1 |
| May | 13.0 °C | 25.4 °C | 2.6 °C | 93 | 191 | 0 | 4 |
| Jun | 16.7 °C | 28.9 °C | 6.2 °C | 93 | 232 | 0 | 13 |
| Jul | 18.6 °C | 30.6 °C | 8.6 °C | 91 | 249 | 0 | 18 |
| Aug | 18.3 °C | 29.7 °C | 8.0 °C | 96 | 235 | 0 | 16 |
| Sep | 14.3 °C | 24.8 °C | 4.7 °C | 82 | 206 | 0 | 3 |
| Oct | 10.7 °C | 21.6 °C | 0.7 °C | 95 | 131 | 2 | 0 |
| Nov | 6.0 °C | 17.0 °C | −4.0 °C | 85 | 77 | 11 | 0 |
| Dec | 3.2 °C | 13.4 °C | −7.4 °C | 98 | 43 | 17 | 0 |
| Year | 10.0 °C | 30.6 °C | −8.8 °C | 1019 | 1865 | 90 | 55 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Bullet / La Frétaz (6 km, 1205 m), Mathod (10 km, 435 m), La Brévine (19 km, 1050 m), adjusted to the elevation of Grandson (500 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Nearby cities
Check the weather of cities near Grandson:
- Weather Fiez
- Weather Giez
- Weather Champagne
- Weather Fontaines-sur-Grandson
- Weather Valeyres-sous-Montagny
- Weather Montagny-près-Yverdon
- Weather Yverdon-les-Bains
- Weather Tévenon
- Weather Grandevent
- Weather Novalles
- Weather Cheseaux-Noréaz
- Weather Orges
Frequently asked questions about weather in Grandson
What is the weather in Grandson today?
At the top of the page you will find the current temperature, precipitation and wind in Grandson, updated in real time.
What is the 15-day forecast for Grandson?
The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Grandson.
Will it rain tomorrow in Grandson?
Check the 48-hour hourly forecast to see exactly when precipitation is expected in Grandson.
What is the air quality in Grandson?
The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Grandson.
Are there weather alerts for Grandson?
Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.
At what altitude is Grandson located?
Grandson sits at around 500 m above sea level in the canton of Vaud. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.
What is the warmest month in Grandson?
The warmest month in Grandson is July, averaging 18.6 °C (1991–2020 normal). The coldest is January at 2.3 °C.
How much does it rain in Grandson per year?
Grandson receives about 1019 mm of precipitation a year. The wettest month is December (98 mm), the driest February (66 mm).
When is the best time to visit Grandson?
For warmth and sunshine: July (18.6 °C on average, 249 h of sun). The coldest month is January (2.3 °C). Check the 15-day forecast above for your dates.