Race weather · 10-year data

When to race in Iowa

Typical race-day conditions for every month, averaged from 10 years of weather history across 205 upcoming race days in Iowa — the same data shown on every race page on Find The Run.

Best month

November

31–47°F · low rain risk

16 races →

#2 pick

April

42–62°F · some rain risk

6 races →

#3 pick

October

49–66°F · some rain risk

42 races →

Month by month

Bars show the typical race-day range (17–85°F scale). Tap a month to browse its races.

FebFebruary

17–35°F

14% rain

2 races

MarMarch

29–48°F

19% rain

1 races

AprApril

42–62°F

28% rain

6 races

MayMay

49–69°F

29% rain

11 races

JunJune

63–82°F

30% rain

2 races

JulJuly

68–85°F

25% rain

2 races

AugAugust

65–82°F

22% rain

55 races

SepSeptember

60–77°F

22% rain

59 races

OctOctober

49–66°F

21% rain

42 races

NovNovember

31–47°F

13% rain

16 races

DecDecember

23–38°F

10% rain

9 races

Races in the sweet spot

Upcoming Iowa races in the best-weather months.

Harvest Half Marathon and 10K

Sioux Center · Oct 3 · typically 51–69°F

Harvest Festival Champagne 5K

Clear Lake · Oct 3 · typically 52–69°F

Haunted 5K, 10K, & 13.1M at Iowa City, IA (40)

Iowa City · Oct 3 · typically 54–72°F

20th Annual Pink Ribbon Run

Cedar Falls · Oct 3 · typically 53–70°F

Lime Creek Timber Trot

Mason City · Oct 3 · typically 51–69°F

Corpuscle Shuffle 5K Run/Walk

Davenport · Oct 3 · typically 55–72°F

How this is measured: every race on Find The Run carries 10 years of weather history for its exact location and calendar date. These monthly figures average that data across all 205 upcoming race days in Iowa — real race-day conditions in the US, not city-wide monthly normals.

Browse all Iowa races → · All state weather guides