Suffolk County Marathon
East Islip, NY, USA · October 18, 2026
Race Day Weather
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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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
Conditions
Rain Freq
33%
2 of 6 yrs
Wind13mph
Dew49°F
Temperature History
Range of temperatures during race hours for each year.
Detailed History
| Year | Conditions | Low / High | Rain | Dew Point | Score |
|---|---|---|---|---|---|
2025 | | 57°/69° | - | 57° | |
2024 |  | 48°/74° | - | 44° | |
2023 | | 51°/57° | - | 41° | |
2022 |  | 57°/61° | Light | 51° | |
2021 | | 44°/59° | - | 43° | |
2019 |  | 58°/63° | Moderate | 58° |
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