2026 Boston Marathon
Boston, MAMonday, April 20
The world's oldest annual marathon, run through the towns of Hopkinton to Boston on Patriots' Day. One of the six World Marathon Majors.
Weather Model
Forecast Evolution
0d out
☁️
L 32°
H 47°
1d out
🌧️
L 32°
H 45°
2d out
🌧️
L 38°
H 51°
3d out
❄️
L 38°
H 49°
4d out
☁️
L 38°
H 47°
5d out
☁️
L 36°
H 44°
6d out
🌧️
L 38°
H 45°
7d out
☁️
L 36°
H 52°
8d out
☁️
L 48°
H 64°
9d out
🌧️
L 41°
H 46°
Model Race Results
Scored against the actual observed high of 50.1°F. Final scores reflect real accuracy.
🥇Meteo-France1.04 · 4d
🥈NWS1.26 · 7d
🥉ECMWF AIFS1.27 · 9d
4.ICON1.47 · 6d
5.GFS2.05 · 10d
6.GEM2.08 · 10d
7.ECMWF IFS2.47 · 7d
Forecast tracking powered by LucidSky — honest weather with uncertainty ranges.