Suffolk County Marathon

East Islip, NY, USA · October 18, 2026
partly-cloudy-day58°·58° high·Windy·Dry
7
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Race Day Weather

partly-cloudy-day
58°at start
60° high
Windy
Dry

Cool conditions, watch for gusts

Runners will face temperatures starting at 58°F, peaking at 59°F, with a steady wind from the WNW at 16 mph, gusting to 24 mph. With humidity at 69% and a dew point of 48°F, conditions are manageable. Runners should be prepared for the wind's impact and may consider adjusting their pacing strategy accordingly.

Race day forecast available in 142 days
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Race Info

Area Map

Course Map

FAQ

When is the 2026 Suffolk County Marathon?

The 2026 Suffolk County Marathon will be held on Sunday October 18, 2026.

Is the Suffolk County Marathon a Boston Marathon Qualifier?

Yes, the Suffolk County Marathon is an official Boston Marathon qualifier.

What is the time limit for the Suffolk County Marathon?

The time limit for the Suffolk County Marathon is 6.5 hours.

What will the weather be like for the 2026 Suffolk County Marathon?

The forecast calls for a high of 63°F and a low of 58°F with a 11% chance of rain.

Historical Weather

Based on 6 years of data
Avg Temp
63°F
L:52° H:64°
RunScore
7
Conditions
Rain Freq
33%
2 of 6 yrs
Wind13mph
Dew49°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore
2025
partly-cloudy-day
57°/69°-
7
2024
clear-day
48°/74°-
8
2023
partly-cloudy-day
51°/57°-
7
2022
cloudy
57°/61°Light
8
2021
partly-cloudy-day
44°/59°-
8
2019
rain
58°/63°Moderate
5