Race-day weather · Wyndo for runners
Hartford Marathon weather
October 10, 2026 · Hartford, CT · scheduled start 8:00 AM (America/New_York). What the start usually feels like, year by year — and a live start-time read once the race is inside the 7-day forecast window.
This edition has run
The 2026 Hartford Marathon is behind us
The next edition typically follows the race's pattern — 2nd Saturday of October. We'll flip this page to the new date (and the live start-time read for race week) when the race confirms its schedule. The history below keeps the long view.
Race-morning weather history
Typically crisp 40s-50s F for the early-October start; occasional warm-humid outlier years are the main weather risk. Wyndo tracks what this calendar slot has actually served up at the start hour — temperature, dew point, wind, and rain — including the years when weather canceled or disrupted the race, and reads the live forecast for the start once race week arrives.
Median start temp
50°F
p75 (a warm year): 55°F
Median dew point
45°F
at the start hour
Rain at the start
10%
2 of 20 measured years
Warmest start
62°F
in 2009
Scroll sideways to see all columns.
| Year | Start temp | Dew point | Wind | Precip (start hr) | Day's high |
|---|---|---|---|---|---|
| 2025 | 50°F | 46°F | 2 mph | dry | 67°F |
| 2024 | 61°F | 45°F | 10 mph | dry | 73°F |
| 2023 | 48°F | 44°F | 4 mph | dry | 58°F |
| 2022 | 48°F | 41°F | 6 mph | dry | 58°F |
| 2021 | 58°F | 54°F | 5 mph | dry | 65°F |
| 2020 | 58°F | 51°F | 11 mph | dry | 75°F |
| 2019 | 54°F | 46°F | 7 mph | dry | 62°F |
| 2018 | 47°F | 41°F | 4 mph | 0.6 mm | 54°F |
| 2017 | 59°F | 57°F | 2 mph | dry | 73°F |
| 2016 | 51°F | 50°F | 0 mph | dry | 69°F |
| 2015 | 49°F | 39°F | 5 mph | dry | 63°F |
| 2014 | 46°F | 43°F | 4 mph | 1.9 mm | 55°F |
| 2013 | 51°F | 46°F | 7 mph | dry | 70°F |
| 2012 | 33°F | 26°F | 4 mph | dry | 53°F |
| 2011 | 49°F | 45°F | 5 mph | dry | 80°F |
| 2010 | 55°F | 44°F | 6 mph | dry | 68°F |
| 2009 | 62°F | 59°F | 6 mph | dry | 65°F |
| 2008 | 47°F | 42°F | 5 mph | dry | 71°F |
| 2007 | 42°F | 37°F | 4 mph | dry | 61°F |
| 2006 | 37°F | 33°F | 4 mph | dry | 59°F |
Slot climatology: each row is the weather at this race's usual calendar slot and start hour (ERA5 reanalysis at the start line) — including years when the edition was canceled or moved. A computed slot date is not a claim the race ran that day.
Your heat-adjusted goal for the marathon
The same cited model as the full calculator, pointed at this race: the median start-hour conditions this calendar slot has served up — climatology, not a forecast.
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Race facts
- Start line
- Capitol Avenue at the Connecticut State Capitol (Bushnell Park)
- Scheduled start
- 8:00 AM (America/New_York) — 2026 timetable on the organizer event page (checked 2026-08-17): wheelchair 7:55, marathon/half/relay 8:00, charity 5K 8:01.
- Field size
- 2025 marathon finishers 1,915 — largest Hartford Marathon in a decade
- Registration
- open (2025 sold out)
Wyndo is not affiliated with or endorsed by the Hartford Marathon (officially the "Eversource Hartford Marathon") or its organizers. Race names are used descriptively to identify the event; schedules and start times belong to the race — always confirm details on the official site. Weather guidance here is informational, never medical advice, and event alert flags on race day belong to the race's own medical team.