Data current as of 2026-10-16 · Sourced from NOAA Storm Events
Over the past five years, the National Oceanic and Atmospheric Administration has recorded 275 hail storms within 25 miles of Castle Rock, CO. Of those, 232 produced hail at least quarter-size — the threshold most insurance carriers consider potentially damaging to asphalt shingles. The largest reported hail in this window was egg-sized, which can fracture shingle mat and dent metal flashing on contact. 2023 was the most active year on record locally, with 137 documented hail events.
Check Hail History for a Specific Address in Castle Rock| Severity | Count | What it means for roofs |
|---|---|---|
| Destructive | 5 events | Egg-size, expect mat fractures and gutter damage |
| Severe | 51 events | Ping pong-size, granule loss and bruising common |
| Significant | 176 events | Quarter-size, the standard insurance damage threshold |
| Moderate | 43 events | Marble-size, possible cosmetic damage |
| Year | Reported Hail Events Within 25 mi |
|---|---|
| 2026 | 66 events |
| 2025 | 28 events |
| 2024 | 35 events |
| 2023 | 137 events |
| 2022 | 9 events |
2023 was the busiest hail year on record locally for Castle Rock, with 137 documented events inside the 25-mile radius. Storm activity in Castle Rock typically peaks in spring and early summer, when the jet stream pushes Gulf moisture into the area and supercell thunderstorms become more frequent.
| Date | Location | Severity | Size | NOAA Comments |
|---|---|---|---|---|
| 2026-08-27 | 3 NE Foxfield, CO | Significant | 1.00" | Time estimated from radar. |
| 2026-08-26 | 2 NW Castle Pines, CO | Significant | 1.25" | — |
| 2026-08-26 | 1 NW Castle Pines, CO | Significant | 1.25" | — |
| 2026-08-26 | 2 ESE Castle Pines, CO | Significant | 1.25" | Time estimated from radar. |
| 2026-08-26 | 3 ENE Greenland, CO | Significant | 1.00" | — |
| 2026-08-26 | 2 SW The Pinery, CO | Significant | 1.00" | Time estimated from radar. |
| 2026-08-26 | 1 ESE Castle Pines, CO | Significant | 1.00" | — |
| 2026-08-26 | 3 W Parker, CO | Moderate | 0.75" | Report from mPING: Dime (0.75 in.). |
| 2026-08-26 | 5 SSE Arapahoe Park, CO | Significant | 1.00" | Time estimated from radar. |
| 2026-08-26 | 5 SSE Arapahoe Park, CO | Significant | 1.00" | Time estimated from radar. |
| 2026-08-26 | 2 N Castle Pines, CO | Significant | 1.00" | Time estimated from radar. |
| 2026-08-26 | 3 NW Parker, CO | Moderate | 0.75" | Report from mPING: Dime (0.75 in.). |
| 2026-08-22 | 2 S Arapahoe Park, CO | Significant | 1.00" | Report from mPING: Quarter (1.00 in.). |
| 2026-08-16 | 2 W Ponderosa Park, CO | Moderate | 0.75" | Report from mPING: Dime (0.75 in.). |
| 2026-08-15 | 2 SSW Foxfield, CO | Severe | 1.75" | Some hail of up to golf ball size. |
| 2026-08-14 | 3 N Englewood, CO | Moderate | 0.75" | Report from mPING: Dime (0.75 in.). |
| 2026-08-14 | Englewood, CO | Significant | 1.00" | — |
| 2026-08-13 | 2 W Arapahoe Park, CO | Severe | 1.75" | Report from mPING: Golf Ball (1.75 in.). |
| 2026-08-13 | 1 W Arapahoe Park, CO | Significant | 1.00" | Report from mPING: Quarter (1.00 in.). |
| 2026-08-13 | 2 W Arapahoe Park, CO | Significant | 1.00" | Also reported dents on metal roof vents, and a significant amount of leaves stripped from trees. |
NOAA has recorded 47 high-wind events within 25 miles of Castle Rock, CO in the past five years. Of those, 46 reached severe-thunderstorm thresholds (58+ mph). The highest measured gust was 83 mph.
| Severity | Count |
|---|---|
| Severe | 17 events |
| Significant | 29 events |
| Moderate | 1 event |
| Date | Location | Gust (mph) | Severity | NOAA Comments |
|---|---|---|---|---|
| 2026-09-19 | 9 NNW Woodland Park, CO | 59 | Significant | Mesonet station HACC2 Manchester. |
| 2026-08-29 | 3 NE Lone Tree, CO | 45 | Moderate | Corrects previous tstm wnd gst report from 3 NE Lone Tree. ASOS station KAPA 2 SSE Centennial. Wind sensor failure. Therefore, previous report of 58 mph was deemed erroneous. |
| 2026-08-22 | 5 S Watkins, CO | 67 | Severe | Weather station XL418. |
| 2026-08-15 | 3 NE Lone Tree, CO | 64 | Severe | AWOS station KAPA 2 SSE Centennial. |
| 2026-08-14 | 2 W Elizabeth, CO | 62 | Significant | Personal weather station. |
| 2026-07-28 | 6 NE Elizabeth, CO | 60 | Significant | Personal weather station. |
| 2026-07-28 | 10 E Arapahoe Park, CO | 58 | Significant | Mesonet station AV686 Bennett. |
| 2026-07-06 | 1 N Buckley AFB, CO | 60 | Significant | AWOS station KBKF Buckley SFB. |
| 2026-06-08 | 1 NNE Lone Tree, CO | 66 | Severe | Mesonet station CO001 I-25 and C470. |
| 2026-06-08 | HIGHLANDS RANCH, CO | 66 | Severe | Mesonet station located at I-25 and C470. |
| 2025-07-22 | HIGHLANDS RANCH, CO | 60 | Significant | The wind gust was recorded at the mesonet station CO001 located at I-25 and C470. |
| 2025-07-22 | PARKER, CO | 58 | Significant | The wind gust was recorded at the ASOS station located at the Centennial airport (APA). |
| 2025-07-14 | KIOWA, CO | 63 | Significant | — |
| 2025-07-14 | ARAPAHOE PARK, CO | 67 | Severe | — |
| 2025-07-07 | CENTENNIAL AIRPORT, CO | 66 | Severe | A few trees in the area were uprooted and part of the IKEA sign was blown down. |
| 2025-06-24 | ARAPAHOE PARK, CO | 59 | Significant | — |
| 2025-06-24 | ARAPAHOE PARK, CO | 59 | Significant | — |
| 2025-04-24 | ELIZABETH, CO | 76 | Severe | — |
| 2025-04-24 | ELIZABETH, CO | 64 | Severe | — |
| 2025-04-24 | ELIZABETH, CO | 62 | Significant | — |
The most recent quarter-size-or-larger hail storm recorded by NOAA within 25 miles of Castle Rock was on August 27, 2026. HailCheck refreshes from the NOAA Storm Events database daily, so newer events appear here as they are reported.
Castle Rock averages roughly 55 reported hail events per year within a 25-mile radius. Significant storms (quarter-size or larger) account for 232 of the 275 events recorded over the last five years.
The largest documented hail near Castle Rock in the last five years was egg-sized. Most Castle Rock-area hail falls in the marble-to-quarter range, with destructive storms (egg-size or larger) appearing roughly once every few years.
Most homeowners insurance policies in CO cover hail damage to roofs, siding, and gutters under the dwelling and other-structures coverage. Coverage typically requires the damage to be tied to a verifiable storm date — which is where the NOAA hail history above (and a HAAG-style test square validation) becomes important for the claim file.
Use the HailCheck address search to enter any street address in or near Castle Rock. HailCheck returns every NOAA hail event within a configurable radius, along with severity bands, dates, and storm narratives for Pro members.
If your property in or near Castle Rock took on hail during one of the storms above, the standard process for documenting damage is a 10×10 foot test square inspection. A HAAG-trained reviewer counts impact indicators — granule displacement, mat fractures, and bruising — within the marked square and produces a PASS or FAIL document for the claim file.
HailCheck offers a $99 photo-based HAAG-style test square validation. You submit photos from the field, our reviewer evaluates the impact indicators and cross-references the NOAA storm dates listed above, and a written PASS/FAIL determination is returned within one business day. We do not send anyone to the roof — the validation is built around the photos you submit.
Learn About $99 HAAG-Style ValidationCastle Rock sits inside the central United States hail belt, where warm Gulf moisture collides with cold continental air to produce supercell thunderstorms capable of dropping the hail documented above. Properties in this zone typically see at least one significant hail event every two to four years.