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.
Countdown
39 days to race day
The live race-day forecast unlocks 33 days from now, when August 22, 2026 enters the 7-day forecast window — a start-time read for the scheduled 7:00 AM start. Until then, live hourly data is not available; the history below shows what race morning usually looks like.
Typical start temp
64°F
median of 20 years
A warm year
67°F
75th percentile start temp
Rain at the start
10%
2 of 20 measured years
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
| 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.
Racing this one?
Skip the taper-week refresh spiral. Wyndo emails you the Crim Festival of Races race-day outlook when it enters the 7-day forecast window, an update only when it changes meaningfully, and a final look the day before — quiet otherwise.
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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.