Hail History Near Northglenn, CO — What the Data Says

Northglenn, Colorado has 4,681 radar-detected hail events on record within 15 miles since 2015 — the largest in the 2.5″+ size class — per NOAA's NEXRAD Severe Weather Data Inventory (SWDI); the most recent nearby detection was September 25, 2026. These are records of hail exposure, not of damage: size is a class, not a measurement, and a hail record near a property is not a finding that the property was damaged.

Hail events
4,681
since 2015
Largest hail
4"
diameter, recorded
Avg per year
426
events / year
Most recent
September 25, 2026
detected nearby

Source: NOAA NEXRAD Severe Weather Data Inventory (SWDI) — radar-detected hail records 2015–present, within a 15-mile radius of Northglenn.

Northglenn, Colorado has recorded 4,681 hail events within a 15-mile radius since 2015, based on NOAA NEXRAD radar data. The largest documented storm produced hail measuring 4 inches. The most recent event was detected on September 25, 2026. On average, the Northglenn area sees approximately 426 hail events per year, placing it among the most hail-active cities in Colorado.

Given the high storm frequency in Northglenn, homeowners should schedule a professional roof inspection at least once a year, ideally before hail season begins (April through August, with peak activity in May and June). Properties with asphalt shingle roofs are especially vulnerable. If your roof is more than 10 years old and has been through multiple hail events, a licensed inspector can check for wear that is hard to see from the ground. Document what you observe promptly. Claim deadlines and coverage rules vary by carrier and policy — confirm yours with your insurer or the Colorado Division of Insurance (doi.colorado.gov). Typical repair costs in the Northglenn area range from $8,000–$25,000+ for full roof replacement.

Check your free HailScore for this address · Colorado hail statistics · How the score is calculated

Major hailstorms in Adams County

The most significant NOAA-documented hailstorms that hit the Northglenn area. Click any storm for the full event records, map, and verification IDs.

ADAMS County, CO

Hail Damage in Northglenn, CO — Free Address Hail Score

4,681 documented hail events near Northglenn since 2015. Check your specific address for a free HailScore — exposure history, not a damage diagnosis.

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Total Hail Events

4,681

Within 15 miles

Largest Hail

4"

Inspection is the normal next step

Most Recent Event

September 25, 2026

Last recorded hail

Avg Hail Size

1.04"

Across all events

Hail Storm Summary for Northglenn, CO

Storm History

Total events4,681
Largest hailstone4"
Average size1.04"
Most recentSeptember 25, 2026
Per year avg426

Data from 2015 to present, 15-mile radius

Risk Assessment

High Risk
Under 1"2,176 (46%)
1" to 2"2,178 (47%)
Over 2"327 (7%)

Hail 1″+ can bruise or crack asphalt shingles; at 2″+ a professional inspection is the normal next step. A recorded size is exposure, not a damage finding.

What You Should Do

Schedule a professional roof inspection at least once a year, ideally before hail season (April through August, with peak activity in May and June). Properties with asphalt shingle roofs are especially vulnerable. If your roof is more than 10 years old and has been through multiple hail events, a licensed inspector can check for wear that is hard to see from the ground; whether anything found is covered depends on your policy and carrier. Typical repair costs range from $8,000–$25,000+ for full roof replacement.

Most Colorado insurance policies cover hail damage
Confirm claim windows with your insurer
Free inspections available from local contractors

Hail Events Near Northglenn

100 events within 15 miles · Click for details

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Significant Hail Events

Events with hail 1" or larger near Northglenn

DateHail SizeCountyDistance
Sep 25, 20261"10.7 mi
Sep 25, 20261"13.7 mi
Sep 25, 20261"10.6 mi
Sep 18, 20261"14.3 mi
Sep 18, 20261.25"15.0 mi
Sep 18, 20261"14.1 mi
Sep 18, 20261"14.5 mi
Sep 7, 20261"14.0 mi
Sep 7, 20261"13.6 mi
Sep 7, 20261.25"13.3 mi
Sep 7, 20261.25"13.6 mi
Sep 7, 20261.5"12.8 mi
Sep 7, 20261"11.8 mi
Sep 7, 20261"11.5 mi
Sep 6, 20261"12.8 mi
Sep 6, 20261"7.9 mi
Sep 6, 20261"5.3 mi
Sep 6, 20261.25"7.3 mi
Sep 6, 20261.25"9.1 mi
Sep 6, 20261"11.7 mi
Sep 6, 20261"1.4 mi
Sep 6, 20261"3.9 mi
Sep 6, 20261"7.3 mi
Sep 6, 20261.5"14.0 mi
Sep 6, 20261"12.4 mi

Did Hail Hit Your Northglenn Home? Here's What to Do

1

Check your specific address

City-level data shows regional activity. Enter your exact address below to see what hit your street specifically.

2

Schedule a free inspection

If hail of 1" or larger hit near you, a licensed Colorado roofing contractor can inspect for free. Most damage is invisible from the ground.

3

File before the deadline

Claim deadlines and coverage rules vary by carrier and policy — confirm yours with your insurer or the Colorado Division of Insurance (doi.colorado.gov).

Did Hail Hit Your Northglenn Address?

Check Your Northglenn Address

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Northglenn Hail Damage FAQ

Does it hail in Northglenn, Colorado?+

Northglenn, Colorado has 4,681 radar-detected hail events on record within 15 miles since 2015 — the largest in the 2.5″+ size class — per NOAA's NEXRAD Severe Weather Data Inventory (SWDI); the most recent nearby detection was September 25, 2026. These are records of hail exposure, not of damage: size is a class, not a measurement, and a hail record near a property is not a finding that the property was damaged.

Did it hail in Northglenn, CO recently?+

The most recent documented hail event near Northglenn, CO was detected on September 25, 2026. Northglenn has recorded 4,681 hail events since 2015 within a 15-mile radius. Check your specific address on HailScore to see what storms hit your exact street.

When does hail season start in Northglenn, Colorado?+

Colorado hail season starts in April and runs through August, with the most intense activity in May, June, and July. Northglenn typically sees 426 hail events per year on average. The Front Range location means warm Gulf moisture collides with cold Rocky Mountain air, creating ideal conditions for severe hailstorms. Get your address checked before May to stay ahead of any existing damage.

Is there a hail storm warning for Northglenn today?+

HailScore shows historical hail data from NOAA NEXRAD radar — not live forecasts. For active storm warnings, check weather.gov or the NWS Denver office. For historical hail near your Northglenn property, enter your address on HailScore to see the newest NOAA hail reports near it.

How many hail events has Northglenn, CO experienced?+

Northglenn, CO has recorded 4681 hail events within a 15-mile radius since 2015, based on NOAA NEXRAD radar data. With over 4681 events in a decade, Northglenn is considered a high-risk hail area.

What is the average hail size in Northglenn?+

The average hail size recorded near Northglenn is 1.04 inches. The largest single event recorded reached 4 inches. Hail of 1 inch or larger can bruise or crack asphalt shingles, and at 2 inches or larger a professional roof inspection is the normal next step after a storm. A recorded size is exposure, not a damage finding. Only a licensed roof inspection can determine whether a specific roof was damaged; coverage depends on the policy and carrier.

When is hail season in Colorado?+

Hail season in Colorado typically runs April through August, with peak activity in May and June. During these months, atmospheric conditions create powerful convective thunderstorms capable of producing large hail. Northglenn residents should inspect their roofs after any storm and consider a professional inspection each spring.

Does insurance cover hail damage in Colorado?+

Many standard homeowner's policies in Colorado include hail under a "wind and hail" peril, but coverage and deductibles differ from one policy to the next. Claim deadlines and coverage rules vary by carrier and policy — confirm yours with your insurer or, in Colorado, the Colorado Division of Insurance (doi.colorado.gov). Document what you observe promptly. Even when nothing is obvious from the ground, a licensed roofer can check for impacts during an inspection — and that inspection, not a hail record, is what shows whether a roof was damaged.

How do I check my roof for hail damage in Northglenn?+

Start by looking for obvious signs from the ground: dented gutters, dings on metal vents, chipped paint, or broken skylight glass. On the roof itself, hail damage appears as dark circular bruises or "spatter" marks on asphalt shingles where granules have been knocked away. Because roof damage is often subtle, many Northglenn homeowners miss it without a professional inspection. If HailScore shows events of 1 inch or larger near your property, scheduling a free inspection with a local contractor is strongly recommended.

What is a HailScore and how is it calculated?+

A HailScore is a 0–100 risk index that measures historical hail activity near a specific property. The score is calculated from five factors derived from NOAA NEXRAD radar data: storm frequency (how many events), recency (recent storms score higher), hail size (larger hail = more damage potential), cumulative damage (repeated storms compound wear), and proximity (storms closer to your address weigh more). A score of 0–25 is Low, 26–50 is Moderate, 51–75 is High, and 76–100 is Very High — the same sacred bands used on the live report.

Should I get a roof inspection in Northglenn?+

If your property is in Northglenn and nearby storms have produced hail of 1 inch or larger, a professional roof inspection is worth scheduling. Northglenn has recorded hail up to 4 inches nearby — large enough to bruise or crack asphalt shingles — but a recorded size is exposure, not a finding about your roof. Many roofing contractors in CO inspect at no charge and can document what they find; whether any of it is covered depends on your policy and carrier.

How much does hail damage roof repair cost in Northglenn?+

Hail damage repair costs in Northglenn typically range from $8,000–$25,000+ for full roof replacement. The final cost depends on roof size, pitch, material type (asphalt shingles vs. metal vs. tile), and the extent of damage a licensed inspection finds. Whether a confirmed repair is covered, and what deductible applies, depends on your policy and carrier. Getting more than one contractor estimate before deciding whether to file is a reasonable step.

What NOAA data does HailScore use for Northglenn?+

HailScore uses data from the NOAA NEXRAD radar network (Next Generation Weather Radar), specifically the SWDI (Severe Weather Data Inventory) maintained by NCEI (National Centers for Environmental Information). For Northglenn, we analyze all radar-detected hail events within a 15-mile radius from 2015 to present, totaling over 4681 NOAA-linked events. Each record includes the storm's timestamp, geographic coordinates, and hail diameter in inches (radar-estimated or ground-reported).

How accurate is HailScore data for Northglenn?+

HailScore data comes directly from NOAA's NEXRAD radar network, which is the same system used by the National Weather Service for official storm reporting. Radar sizes are a class rather than a measurement: MESH is tuned so that roughly 75% of measured hail comes in at or below the estimate, so read a size as accurate to about one tier. We use the 15-mile radius to capture hail that may have affected your specific neighborhood even if the storm center was nearby. For the most precise assessment of your individual property, a physical roof inspection by a licensed contractor is always recommended.

Need a Northglenn address's hail history as a document?

The Official Hail History Report is a one-off $9.95 PDF: the NOAA Storm Events and NEXRAD radar records within 1 mile of the address over 10 years, each with its government source ID. Documents exposure, not damage.

Order the PDF — $9.95

Weather data provided by NOAA National Weather Service and Storm Prediction Center. This product is not affiliated with or endorsed by the U.S. Government. Data covers 2015 to present within a 15-mile radius of Northglenn city center.