Detailed 14-day forecast: daily max/min, total precipitation, wind and UV. For a forecast further out than 14 days — see the 30-day long-range forecast →
The 14-day outlook for Rennes shows highs from 29° to 44° and lows around 10°. The warmest day looks like Tuesday (about 44°), with roughly 1 rainy day and temperatures cooling down later on.
Météo-France
Official weather data from Météo-France (French Meteorological and Hydrological Institute) · Météo-France · French Museum of Natural History · Bison Futé