Winter Whirl 10K

Fountain Valley, CA, USA · December 19, 2026·

54°·57° high·Light·Dry

Weather

Winter Whirl 10K race day weather

54°at start

62° high

Light

Dry

Your goal

0:00:00

to see the forecast where you'll be

Comfortable temps

Mild 54°F temps at gun time mean comfortable early miles without overheating risk. Temperatures rising to 62°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing.

Race day forecast available in 25 days

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Distance: 6.2mi

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About the Winter Whirl 10K

The Winter Whirl 10K is two laps of the 5K loop on the paths of Mile Square Park in Fountain Valley, California. It starts and finishes at Parking Lot D on the Saturday of race weekend. The route is a looped, mostly flat park course that is open to other path users, so runners share the way with walkers and cyclists.

Website

Race weekend

Saturday, December 19

8:00 AMHalf Marathon (13.1 mi)

8:30 AM10K (6.2 mi)

8:30 AM5K (3.1 mi)

Course Map

Winter Whirl 10K FAQ

When is the 2026 Winter Whirl 10K?

The 2026 Winter Whirl 10K will be held on Saturday December 19, 2026.

What will the weather be like for the 2026 Winter Whirl 10K?

The forecast calls for a high of 63°F and a low of 52°F with a 8% chance of rain. Check our detailed hourly forecast above for the best 10K race plan.

Winter Whirl 10K weather history

Based on 2 years of data

Avg Temp

57°F

L:56° H:59°

RunScore

Conditions

Rain Freq

0 of 2 yrs

Wind4mph

Dew45°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

This race has moved. A year marked with a city was run there, and its weather is from there.

Year	Conditions	Low / High	Rain	Dew Point	Score	Results
2025 Winter Whirl 10K Long Beach, CA · Partly cloudy throughout the day. 2025Long Beach, CA		56°/57°	-	55°
2024 Winter Whirl 10K Santa Monica, CA · Clear conditions throughout the day. 2024Santa Monica, CA		56°/61°	-	34°

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