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Grenchen weather 15 days
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– 
–Grenchen weather 15 days, from 14 Nov to 29 Nov: 0 day(s) of clear skies expected, highs from 2 to 13 °C and 50.4 mm of precipitation in total. Day-by-day table (Open-Meteo model).
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today |  overcast | −1 °C | 4 °C | 0.0 mm | 10 km/h |
| Tomorrow |  showers | 3 °C | 10 °C | 3.8 mm | 20 km/h |
| Mon 16 Nov | showers | 7 °C | 9 °C | 5.1 mm | 23 km/h |
| Tue 17 Nov | showers | 8 °C | 12 °C | 11.9 mm | 34 km/h |
| Wed 18 Nov |  thunderstorms | 8 °C | 11 °C | 8.2 mm | 32 km/h |
| Thu 19 Nov | showers | 8 °C | 13 °C | 3.0 mm | 29 km/h |
| Fri 20 Nov |  light snow | −1 °C | 8 °C | 3.2 mm | 29 km/h |
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Sat 21 Nov |  fog | −2 °C | 8 °C | 0.1 mm | 4 km/h |
| Sun 22 Nov |  light drizzle | 2 °C | 8 °C | 0.6 mm | 6 km/h |
| Mon 23 Nov | overcast | 0 °C | 7 °C | 0.0 mm | 3 km/h |
| Tue 24 Nov | light drizzle | 0 °C | 6 °C | 1.0 mm | 2 km/h |
| Wed 25 Nov | light drizzle | 1 °C | 4 °C | 0.8 mm | 12 km/h |
| Thu 26 Nov | overcast | 0 °C | 2 °C | 0.0 mm | 9 km/h |
| Fri 27 Nov | light drizzle | −1 °C | 3 °C | 0.4 mm | 3 km/h |
| Sat 28 Nov | light snow | 0 °C | 4 °C | 5.4 mm | 13 km/h |
| Sun 29 Nov | snow | 0 °C | 4 °C | 6.8 mm | 19 km/h |
And at 20, 25 or 30 days? No model seriously forecasts that far. Climatology takes over: the November norm is 3.8 °C in Grenchen, the December norm 0.6 °C (MeteoSwiss 1991–2020, monthly means measured nearby).
Frequently asked questions
Which will be the warmest day of the next 15 days in Grenchen?
thursday 19 Nov, with a high of 13 °C. The coolest will be thursday 26 Nov, with 2 °C.
How many rainy days are expected in Grenchen over 15 days?
9 days with at least 1 mm, for 50.4 mm in total. The wettest: tuesday 17 Nov (11.9 mm).
What is the outlook for next week in Grenchen?
Cooler than this one: an average high of 5.3 °C against 9.7 °C.
Will the fortnight be warmer than normal in Grenchen?
Yes: an expected mean of 4.6 °C, 0.8 °C above the MeteoSwiss 1991–2020 norm for November (3.8 °C).
Will it snow in Grenchen in the next 15 days?
Yes: 2 days with snow, 3 cm in total, mostly sunday 29 Nov.
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 Grenchen: the most honest estimate beyond two weeks.
meteo-ch.ch · Open-Meteo data, MeteoSwiss norms 1991–2020