Windsor Half Marathon

Windsor, CO, USA · October 3, 2027·
partly-cloudy-day50°·62° high·Light·Dry
9
Register

Windsor Half Marathon race day weather

partly-cloudy-day
50°at start
75° high
Light
Dry
Your goal
0:00:00

Comfortable temps, big temp swing

Mild 50°F temps at gun time mean comfortable early miles without overheating risk. Temps will climb significantly to 75°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing.

Race day forecast available in 311 days
partly-cloudy-night10
partly-cloudy-day10
partly-cloudy-day10
partly-cloudy-day10
partly-cloudy-day8
partly-cloudy-day7
partly-cloudy-day6
partly-cloudy-day6
partly-cloudy-day6
partly-cloudy-day5
partly-cloudy-day6

Pace Calculator

13.1mi
0:00:00
HH:MM:SS
Pace
—

Enter a finish time to see what race day does to it.

Common Goals:

Get forecast alerts for Windsor Half Marathon

We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.

Race Plan

Get your personalized Windsor Half Marathon race plan

A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

Race Pace
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

About the Windsor Half Marathon

The Windsor Half Marathon runs 13.1 miles from The Island at Pelican Lakes in Water Valley, Windsor, Colorado. Most of the route follows paved trails out to River Bluffs and Kyger Reservoir, then climbs County Road 13 before returning through Water Valley to the finish on the Island. The County Road 13 climb is the only real hill on the course.

Race weekend

Windsor Half Marathon FAQ

When is the 2027 Windsor Half Marathon?

The 2027 Windsor Half Marathon will be held on Sunday October 3, 2027.

What will the weather be like for the 2027 Windsor Half Marathon?

The forecast calls for a high of 76°F and a low of 47°F with a 3% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

What is the weather usually like for the Windsor Half Marathon?

Over the 6 years racecast.io has race-day weather for (2021 to 2026), it averaged 46°F at the start and 58°F by a typical finish. It has not rained during race hours in any of those years.

What was the hottest Windsor Half Marathon?

Of the 6 years on record, 2023 was the warmest, reaching 61°F during race hours. The coldest start was 2022, at 41°F.

What was the windiest Windsor Half Marathon?

Of the 6 years on record, 2021 was the windiest, with wind averaging 8 mph during race hours. The calmest was 2022, at 0 mph.

Windsor Half Marathon weather history

Based on 6 years of data
Avg Temp
52°F
L:46° H:58°
RunScore
9
Conditions
Rain Freq
0%
0 of 6 yrs
Wind5mph
Dew38°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
clear-day
50°/61°-
8
2025
fog
44°/55°-
10
2024
clear-day
46°/56°-
10
2023
clear-day
44°/61°-
9
2022
clear-day
41°/56°-
10
2021
partly-cloudy-day
49°/57°-
10