Midwest Financial Group Madison Mini Marathon weather.

Typically 21°C on race morning; rain in 3 of the last 10 years. Race morning (07:00 to 11:00 local time) in Madison on race day in each of the last 10 years; the 2027 race is on 14 Aug 2027.

Typical
21°C (70°F)
race-morning average
Coolest
14°C (57°F)
lowest reading, 07:00–11:00
Warmest
27°C (81°F)
highest reading, 07:00–11:00
Wet years
3 of 10
rain, drizzle or worse
Humidity
78%
typical
Wind
9 km/h
typical, at 10 m

Race morning, 07:00–11:00

Year by year

Race dayAverageLow–highHumidityWindRainConditions
15 Aug 202622°C (71°F)19°C (67°F)–25°C (77°F)85%10 km/h0.0 mmOvercast
16 Aug 202525°C (76°F)23°C (73°F)–27°C (81°F)85%8 km/h0.1 mmOvercast
17 Aug 202421°C (69°F)19°C (66°F)–23°C (73°F)88%14 km/h0.7 mmLight drizzle
12 Aug 202321°C (71°F)19°C (66°F)–24°C (76°F)78%9 km/h0.0 mmClear
13 Aug 202221°C (69°F)19°C (65°F)–23°C (73°F)75%22 km/h0.7 mmOvercast
14 Aug 202120°C (69°F)18°C (64°F)–23°C (74°F)63%3 km/h0.0 mmClear
15 Aug 202022°C (72°F)21°C (69°F)–24°C (75°F)80%10 km/h0.7 mmOvercast
17 Aug 201921°C (70°F)17°C (63°F)–25°C (76°F)75%4 km/h0.0 mmOvercast
11 Aug 201824°C (74°F)20°C (68°F)–27°C (80°F)77%8 km/h0.0 mmClear
12 Aug 201717°C (62°F)14°C (57°F)–20°C (68°F)72%10 km/h0.0 mmClear

Each row is the race's date that year where we know it, else the same weekday nearest its usual date. Temperatures and humidity are averaged over 07:00 to 11:00 local time, rain is the total over those hours, and conditions are the commonest over the morning. The half marathon starts at 07:00.

Kit and pacing

What it means

  • Warm: adjust your goal pace

    Around 21°C on race morning costs most runners time. Plan to run a few seconds per kilometer slower than in cool weather, take on fluid and salt at every station, and wear light colors and sun cream.

  • Be ready for rain

    It rained on 3 of the last 10 race mornings. A bin bag or cheap poncho keeps you dry in the start pen; anti-chafe balm and socks that don't hold water help over the distance, and a cap keeps rain out of your eyes.

  • Humid mornings

    Humidity is usually around 78%, so sweat evaporates slowly and it feels warmer than the thermometer says. Pace on effort, not just the watch.

  • The weather varies a lot

    Race mornings here have ranged by 8°C from year to year. Pack for both, and settle your kit and pacing from the forecast in the last few days.

General guidance from past years' numbers. Check the forecast in race week.

The course 2027 dates and entry

Weather data by Open-Meteo.com, from its historical weather archive (CC BY 4.0).

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