Hail history in Niwot, Colorado
Since 2015, hail was reported within 5 miles of Niwot on 15 days. The largest was 1.5" (ping pong ball) on July 5, 2019. The most recent hail report was on August 10, 2025.
10 largest hail days
Open a date to see the map and every report from that storm.
- DateJuly 5, 2019
Reports1 report within 5 miles of NiwotLargest1.5" (ping pong ball) - DateJune 19, 2018
Reports5 reports within 5 miles of NiwotLargest1.5" (ping pong ball) - DateAugust 14, 2018
Reports1 report within 5 miles of NiwotLargest1.25" (half dollar) - DateAugust 10, 2025
Reports3 reports within 5 miles of NiwotLargest1" (quarter) - DateMay 30, 2024
Reports3 reports within 5 miles of NiwotLargest1" (quarter) - DateMay 9, 2023
Reports2 reports within 5 miles of NiwotLargest1" (quarter) - DateJuly 31, 2020
Reports1 report within 5 miles of NiwotLargest1" (quarter) - DateSeptember 11, 2019
Reports1 report within 5 miles of NiwotLargest1" (quarter) - DateAugust 13, 2019
Reports1 report within 5 miles of NiwotLargest0.88" (nickel) - DateMay 22, 2018
Reports1 report within 5 miles of NiwotLargest0.88" (nickel)
Hail days by year
Each number is a day when hail was reported within 5 miles of Niwot.
- 20150 days
- 20160 days
- 20170 days
- 20184 days
- 20194 days
- 20202 days
- 20210 days
- 20221 day
- 20231 day
- 20241 day
- 20252 days
- 20260 days
When hail is most common
Hail is most common in May (4 hail days), July (4 hail days) and June (3 hail days).
- January0 days
- February0 days
- March0 days
- April0 days
- May4 days
- June3 days
- July4 days
- August3 days
- September1 day
- October0 days
- November0 days
- December0 days
Where hail was reported
Under 1"1" to 1.74"1.75" (golf ball) and up
Reports show where people observed hail, not what fell on a particular roof. This is general information, not insurance, legal or roofing advice.