Weather Mamba 100 2026
Forecasts for a 600 UTMB Index runner, at their estimated passage time. Start Fri, 11/06 07:00 AM: Overcast, 59°F. Coldest: 45°F feels-like at Bridge (Fri, 11/06 06:04 PM); warmest: 70°F at Bridge (Fri, 11/06 09:06 AM). No notable rain forecast on the course. Gusts up to 15 mph at Bridge.
Hour by hour, from the start to the cut-off
Local race times (America/Chicago).
Section-by-section forecasts for Mamba 100 2026, calculated at the estimated passing time: feels-like temperature, rain or snow, wind and thunderstorms. Three models — AROME (Météo-France), ICON (DWD) and ECMWF IFS — served from the finest to the farthest-reaching.
The weather for the entire race, by 4-hour slots, at the start and at each aid station — to know when rain arrives and which pass gets windy, whatever your pace.
Forecast, not guaranteed: in the mountains a model describes a grid of several hundred meters, not the slope you're on.
Weather data: Météo-France (AROME), DWD (ICON), ECMWF (IFS) — CC BY 4.0, via Open-Meteo