Race-day weather · Wyndo for runners
Crim Festival of Races weather
August 22, 2026 · Flint, MI · scheduled start 7:00 AM (America/Detroit). 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 Crim Festival of Races is behind us
The next edition typically follows the race's pattern — 4th Saturday of August. 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
Late-August Michigan heat and humidity on brick; 2020 virtual-only. 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
64°F
p75 (a warm year): 67°F
Median dew point
60°F
at the start hour
Rain at the start
10%
2 of 20 measured years
Warmest start
73°F
in 2021
Scroll sideways to see all columns.
| Year | Start temp | Dew point | Wind | Precip (start hr) | Day's high |
|---|---|---|---|---|---|
| 2025 | 65°F | 61°F | 8 mph | dry | 78°F |
| 2024 | 57°F | 56°F | 5 mph | dry | 82°F |
| 2023 | 65°F | 63°F | 7 mph | dry | 73°F |
| 2022 | 54°F | 53°F | 3 mph | dry | 80°F |
| 2021 | 73°F | 71°F | 5 mph | dry | 91°F |
| 2020 | 63°F | 58°F | 3 mph | dry | 88°F |
| 2019 | 51°F | 49°F | 4 mph | dry | 72°F |
| 2018 | 67°F | 63°F | 9 mph | 0.2 mm | 77°F |
| 2017 | 46°F | 45°F | 4 mph | dry | 73°F |
| 2016 | 68°F | 64°F | 7 mph | 0.2 mm | 75°F |
| 2015 | 60°F | 56°F | 4 mph | dry | 80°F |
| 2014 | 64°F | 62°F | 5 mph | dry | 80°F |
| 2013 | 53°F | 51°F | 3 mph | dry | 82°F |
| 2012 | 66°F | 64°F | 5 mph | dry | 90°F |
| 2011 | 60°F | 58°F | 3 mph | dry | 79°F |
| 2010 | 61°F | 53°F | 7 mph | dry | 86°F |
| 2009 | 56°F | 52°F | 6 mph | dry | 65°F |
| 2008 | 72°F | 65°F | 7 mph | dry | 90°F |
| 2007 | 69°F | 67°F | 4 mph | dry | 76°F |
| 2006 | 67°F | 64°F | 9 mph | dry | 82°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 10-miler
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
- Saginaw St at Kearsley St (brick section), downtown — official start address 125 W Kearsley St
- Scheduled start
- 7:00 AM (America/Detroit) — Official 2026 Race Week Guide (updated Jul 9, 2026): wheelers 6:50, ELITE 10-Mile 7:00, 30-Year Club 7:05, public corrals from 7:10. NOT 8:00.
- Field size
- Festival-wide 'more than 10,000' incl. walkers/spectators — exact 10-Mile finisher count needs a manual pull
- Registration
- open (Race Roster)
Wyndo is not affiliated with or endorsed by the Crim Festival of Races (officially the "Health Alliance Plan Crim Festival of Races") 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.