Race-day weather · Wyndo for runners
New Haven Road Race weather
September 7, 2026 · New Haven, CT · scheduled start 8:30 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 New Haven Road Race is behind us
The next edition typically follows the race's pattern — Labor Day — 1st Monday of September. 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
Labor Day New England heat and humidity; 2020 virtual (kept its edition number). 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
68°F
p75 (a warm year): 71°F
Median dew point
59°F
at the start hour
Rain at the start
10%
2 of 20 measured years
Warmest start
76°F
in 2018
Scroll sideways to see all columns.
| Year | Start temp | Dew point | Wind | Precip (start hr) | Day's high |
|---|---|---|---|---|---|
| 2025 | 60°F | 53°F | 6 mph | dry | 77°F |
| 2024 | 68°F | 59°F | 7 mph | dry | 79°F |
| 2023 | 74°F | 67°F | 3 mph | dry | 91°F |
| 2022 | 71°F | 69°F | 3 mph | 1.2 mm | 77°F |
| 2021 | 69°F | 67°F | 6 mph | dry | 82°F |
| 2020 | 68°F | 63°F | 6 mph | dry | 78°F |
| 2019 | 67°F | 61°F | 6 mph | dry | 76°F |
| 2018 | 76°F | 73°F | 6 mph | dry | 90°F |
| 2017 | 62°F | 57°F | 7 mph | dry | 80°F |
| 2016 | 61°F | 48°F | 10 mph | dry | 80°F |
| 2015 | 68°F | 59°F | 4 mph | dry | 91°F |
| 2014 | 73°F | 71°F | 3 mph | dry | 88°F |
| 2013 | 74°F | 72°F | 5 mph | 0.7 mm | 79°F |
| 2012 | 63°F | 60°F | 5 mph | dry | 76°F |
| 2011 | 71°F | 67°F | 7 mph | dry | 80°F |
| 2010 | 60°F | 46°F | 3 mph | dry | 80°F |
| 2009 | 57°F | 50°F | 4 mph | dry | 72°F |
| 2008 | 66°F | 51°F | 7 mph | dry | 87°F |
| 2007 | 64°F | 57°F | 6 mph | dry | 85°F |
| 2006 | 62°F | 56°F | 5 mph | dry | 73°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 20k
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
- Temple St at Elm St, New Haven Green (corner news-sourced/carried-forward)
- Scheduled start
- 8:30 AM (America/New_York) — Official 2026 schedule: kids 8:10; 20K, half AND 5K all 8:30 (the oft-cited '5K 8:35' is stale). The USATF 20K National Championship starts with the mass start.
- Field size
- ~5,000 finishers (RunSignUp cap 5,500)
- Registration
- open (RunSignUp, 5,500 cap)
Wyndo is not affiliated with or endorsed by the New Haven Road Race (officially the "Faxon Law New Haven Road Race") 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.