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15-day forecast for Ernen

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From 27 Sep to 12 Oct in Ernen: 2 day(s) of clear skies expected, highs from 3 to 19 °C and 60.2 mm of precipitation in total. Day-by-day table (Open-Meteo model).

DayWeatherMinMaxPrecip.WindConfidence
Todaysunny9 °C19 °C0.0 mm11 km/hmedium
Tomorrowovercast9 °C19 °C0.0 mm10 km/hmedium
Tue 29 Sepovercast7 °C14 °C0.2 mm10 km/hhigh
Wed 30 Sepovercast6 °C10 °C0.0 mm7 km/hlow
Thu 1 Octlight rain6 °C9 °C6.3 mm7 km/hlow
Fri 2 Octfog6 °C12 °C0.0 mm9 km/hhigh
Sat 3 Octfog4 °C12 °C0.0 mm9 km/hmedium
DayWeatherMinMaxPrecip.WindConfidence
Sun 4 Octshowers5 °C11 °C8.1 mm5 km/h
Mon 5 Octshowers4 °C9 °C11.4 mm3 km/h
Tue 6 Octdrizzle1 °C6 °C8.7 mm5 km/h
Wed 7 Octovercast−4 °C8 °C0.0 mm5 km/h
Thu 8 Octlight drizzle−3 °C10 °C0.3 mm5 km/h
Fri 9 Octlight drizzle1 °C9 °C1.5 mm4 km/h
Sat 10 Octdrizzle2 °C5 °C10.2 mm4 km/h
Sun 11 Octheavy snow−4 °C3 °C13.5 mm9 km/h
Mon 12 Octovercast– °C– °C– mm– km/h

Confidence index: agreement of 4 independent models (ICON, GFS, IFS, ARPEGE) on the daily high and on rain. High = highs within 2 °C and the same rain verdict; low = more than 4 °C apart or models split on rain.

And at 20, 25 or 30 days? No model seriously forecasts that far: beyond two weeks, only the local climatology gives a reliable trend.

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 Ernen: the most honest estimate beyond two weeks.

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