What is the weather usually like on race day for the Fool's 5K & 10K?

Based on the last 10 years of weather data for Waterloo, IA, April race mornings typically start near 34°F and warm to around 54°F. On this calendar date it has rained in 7 of the last 10 years.

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Fool's 5K & 10K

Waterloo, IA

Sat, Apr 3, 2027

In 170 days · Sat, Apr 3, 2027

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When

Saturday, April 3rd, 2027

Where

3659 Wyth Rd, Waterloo IA

Distances

5K · 10K

Typical weather

34–54°F · some rain risk

See last 10 years

On this date: rain 7 of the last 10 years

2026

37–49°F

rain

2025

35–53°F

dry

2024

34–46°F

rain

2023

34–52°F

dry

2022

26–47°F

rain

2021

47–70°F

dry

2020

27–52°F

rain

2019

29–56°F

rain

2018

24–35°F

rain

2017

45–51°F

rain

Best months to race in Iowa →

Race-day forecast says layers

34°F at the start.

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About this race

The Cedar Valley's 2027 racing season begins with that flat and fast Fool's 5K & 10K in beautiful George Wyth State Park. This race is a "Must do" event for all runners. Perfect for elite runners, walkers, and everyone in between. We hope to see you there!