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15-day forecast for Grandson

Right now

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From 27 Sep to 12 Oct in Grandson: 1 day(s) of clear skies expected, highs from 12 to 26 °C and 53.8 mm of precipitation in total. Day-by-day table (Open-Meteo model).

DayWeatherMinMaxPrecip.Wind
Todayovercast11 °C26 °C0.0 mm8 km/h
Tomorrowovercast14 °C25 °C0.0 mm8 km/h
Tue 29 Seplight rain16 °C25 °C0.1 mm8 km/h
Wed 30 Seplight rain17 °C20 °C2.1 mm8 km/h
Thu 1 Octlight rain16 °C18 °C11.1 mm6 km/h
Fri 2 Octovercast15 °C21 °C0.0 mm16 km/h
Sat 3 Octshowers14 °C22 °C0.6 mm7 km/h
DayWeatherMinMaxPrecip.Wind
Sun 4 Octlight rain14 °C17 °C16.9 mm8 km/h
Mon 5 Octshowers11 °C17 °C12.0 mm9 km/h
Tue 6 Octlight drizzle8 °C16 °C0.9 mm8 km/h
Wed 7 Octovercast7 °C16 °C0.0 mm9 km/h
Thu 8 Octheavy drizzle8 °C15 °C3.6 mm6 km/h
Fri 9 Octheavy drizzle10 °C15 °C3.0 mm5 km/h
Sat 10 Octlight drizzle8 °C12 °C1.8 mm12 km/h
Sun 11 Octlight drizzle9 °C17 °C1.6 mm19 km/h
Mon 12 Octovercast– °C– °C– mm– km/h

And at 20, 25 or 30 days? No model seriously forecasts that far. Climatology takes over: the October norm is 10.7 °C in Grandson, the November norm 6.0 °C (MeteoSwiss 1991–2020, monthly means measured nearby).

Frequently asked questions

Are these 15-day forecasts reliable?

Reliability decreases with the horizon: excellent at 3 days, good up to 7, indicative beyond 10. Each passing day sharpens the rest.

Can the weather be forecast a month ahead?

No, not day by day. That is why this page completes the 16 forecast days with the MeteoSwiss monthly norms for Grandson: the most honest estimate beyond two weeks.

meteo-ch.ch · Open-Meteo data, MeteoSwiss norms 1991–2020