Race-day weather · Wyndo for runners
Hartford Marathon weather
October 10, 2026 · Hartford, CT · traditional start around 8:00 AM (America/New_York) — not yet confirmed for 2026. What the start usually feels like, year by year — and a live start-time read once the race confirms its schedule and race week arrives.
Countdown
80 days to race day
The live race-day forecast unlocks 74 days from now, when October 10, 2026 enters the 7-day forecast window. Until then, live hourly data is not available; the history below shows what race morning usually looks like.
The 2026 start time hasn't been published yet — the 8:00 AM start shown here is carried from a previous edition. We'll switch on the live start-time read when the race posts its schedule.
Typical start temp
50°F
median of 20 years
A warm year
55°F
75th percentile start temp
Rain at the start
10%
2 of 20 measured years
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 the race confirms its schedule and 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)
- Traditional start (not confirmed for 2026)
- 8:00 AM (America/New_York) — 8:00 marathon/half/relay start (wheelchair 7:55, 5K 8:01) per 2025 edition coverage; official 2026 timetable not yet posted.
- 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.