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HailIndex

Windsor hail storm history

Weld County·NOAA NCEI Storm Events Database·~75-day publication lag

Windsor, located in Weld County on Colorado's Front Range, has experienced 7 hail events of 1 inch or larger over the past 10 years, with a largest recorded stone of 2 inches in diameter. The town's position along the Front Range places it in a zone where afternoon convective storms tracking northeast from the Rocky Mountains create regular hail risk during the spring and summer months.

Events ≥1" (10yr)
37
Significant ≥1.5"
18
Avg per year
3.7
Largest recorded
4.25"
Most recent
Jul 31, 2025
Total records
43
NOAA storm history
events (10 yr)34
≥1.5" significant15
peak year (7)2019

Hail risk in Windsor peaks between May and July, with secondary risk extending into April and August. Most significant hail events occur in the afternoon and early evening between 2 p.m. and 7 p.m. Mountain Time, when atmospheric instability is greatest and storms moving off the high plains interact with Front Range elevation.

Annual frequency — last 10 years

2025
8
2024
2
2023
3
2022
5
2021
2
2020
4
2019
7
2018
3
2017
6
≥2.0" severe≥1.5" significant≥1.0" marginal

When hail hits — monthly pattern

Avg events per month · all years · NOAA data

Jan0
Feb0
Mar0
Apr0
May3
Jun15
Jul17
Aug6
Sep2
Oct0
Nov0
Dec0

All recorded hail events

Of 43 recorded events, 18 (42%) reached 1.5" or larger — the threshold for likely functional damage on standard asphalt shingles.

Jul 31, 20251"quarter
Jul 10, 20250.75"penny
Jun 29, 20251"quarter

Report from mping.

May 18, 20250.75"penny

Report from Mping.

Aug 7, 20241.75"golf ball
Jul 21, 20240.75"penny

Reported via mPing.

Jun 12, 20231"quarter
Jul 27, 20221"quarter
Jul 1, 20211.25"half dollar
Jun 14, 20211"quarter
Aug 4, 20201.75"golf ball
Jun 9, 20200.88"penny

The hail shredded leaves, dented a car and damaged shingles.

Aug 23, 20191"quarter
Aug 14, 20191"quarter
May 17, 20191.25"half dollar
Jul 27, 20181"quarter
May 8, 20171"quarter
Jul 27, 20161.75"golf ball
About this data

NOAA hail reports for Windsor are based on National Weather Service records and trained spotter observations. The count of 7 events represents documented stones of 1 inch or larger; smaller hail events and localized damage may not appear in official records due to reporting density in rural areas.

NOAA Storm Events Database source