Hail Storm Summary for Caldwell, ID

Caldwell, Idaho has experienced 62 documented hail events within a 15-mile radius since 2015, according to NOAA NEXRAD radar data. The largest recorded hailstone measured 2.25 inches in diameter, and the average hail size across all events is 1.08 inches. The most recent significant event was detected on July 23, 2026. On average, the Caldwell area sees approximately 6 hail events per year, making it an area with notable hail activity in Idaho.

Based on NOAA radar data, properties in Caldwell face a moderate risk of hail damage. Of the recorded events, 20 produced hail under 1 inch, 38 produced hail between 1 and 2 inches (sufficient to damage standard asphalt shingles), and 4 produced hail over 2 inches (capable of causing severe structural damage). Storms producing hail over 2 inches have been recorded 4 times in the Caldwell area.

Homeowners in Caldwell should inspect their roofs after any significant storm and consider a professional inspection annually during hail season (spring and early summer (April through July)). Even moderate hail can cause granule loss on shingles, which shortens roof lifespan over time. If you notice dented gutters, cracked siding, or dings on metal surfaces after a storm, your roof may have taken similar impacts. Repair costs in the Caldwell area typically range from $8,000–$25,000+ for full roof replacement. Standard homeowner policies often include wind and hail, but terms vary — confirm with your insurer.

CANYON County, ID

Hail Exposure in Caldwell, ID

10 years of verified NOAA hail data for Caldwell and surrounding areas. 62 events recorded since 2015.

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Total Hail Events

62

Within 15 miles

Largest Hail

2.25"

Severe, likely roof damage

Most Recent Event

July 23, 2026

Last recorded hail

Avg Hail Size

1.08"

Across all events

Hail Storm Summary for Caldwell, ID

Storm History

Total events62
Largest hailstone2.25"
Average size1.08"
Most recentJuly 23, 2026
Per year avg6

Data from 2015 to present, 15-mile radius

Risk Assessment

Moderate Risk
Under 1"20 (32%)
1" to 2"38 (61%)
Over 2"4 (6%)

Hail 1"+ can damage shingles. Over 2" causes severe structural damage.

What You Should Do

Inspect your roof after any significant storm and consider a professional inspection annually during hail season (spring and early summer (April through July)). Even moderate hail can cause granule loss that shortens roof lifespan. If you notice dented gutters or dings on metal surfaces, your roof likely took similar impacts. Repair costs typically range from $8,000–$25,000+ for full roof replacement.

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

Hail Events Near Caldwell

58 events within 15 miles · Click for details

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Significant Hail Events

Events with hail 1" or larger near Caldwell

DateHail SizeCountyDistance
Jul 23, 20261.75"11.6 mi
Jul 23, 20262.25"14.9 mi
Jun 27, 20261.5"5.0 mi
Jun 27, 20261"2.6 mi
Jun 27, 20261.25"2.7 mi
Jun 27, 20261"4.2 mi
Jun 27, 20261"7.1 mi
Jul 27, 20251"12.4 mi
Jul 27, 20251.25"14.8 mi
Aug 27, 20231"11.7 mi
May 22, 20231"8.4 mi
May 22, 20231"10.0 mi
May 22, 20231"12.1 mi
Aug 11, 20221"0.5 mi
Aug 11, 20221"14.1 mi
Aug 11, 20221.5"13.9 mi
Aug 11, 20221.5"12.4 mi
Aug 11, 20222"11.2 mi
Aug 11, 20222"11.4 mi
Aug 11, 20221.75"10.1 mi
Aug 11, 20222.25"11.8 mi
Aug 11, 20221.75"13.8 mi
Jul 13, 20191"10.4 mi
Jul 13, 20191.5"11.4 mi
Jul 13, 20191.25"13.5 mi

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Caldwell Hail Damage FAQ

How many hail events has Caldwell, ID experienced?+

Caldwell, ID has recorded 62 hail events within a 15-mile radius since 2015, based on NOAA NEXRAD radar data. Each of these events represents a verified storm detection from the NOAA radar network.

What is the average hail size in Caldwell?+

The average hail size recorded near Caldwell is 1.08 inches. The largest single event recorded reached 2.25 inches. Hail above 1 inch is capable of cracking shingles, and hail above 1.75 inches can cause severe structural damage requiring full roof replacement.

When is hail season in Idaho?+

Hail season in Idaho typically runs spring and early summer (April through July). During these months, atmospheric conditions create powerful convective thunderstorms capable of producing large hail. Caldwell residents should inspect their roofs after any storm and consider a professional inspection each spring.

Does insurance cover hail damage in Idaho?+

Many standard homeowner's policies in Idaho include hail under a "wind and hail" peril, but coverage, deductibles, and filing windows vary by carrier and policy. Confirm yours with your insurer. Document what you observe promptly. Even if damage isn't obvious from the ground, a licensed roofer can check for impacts during an inspection.

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

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 Caldwell 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 Caldwell?+

If your property is in Caldwell and any nearby storms have produced hail of 1 inch or larger, a free professional roof inspection is highly recommended. Given that Caldwell has recorded hail up to 2.25 inches, there is a real probability of roof damage that insurance may cover. Many roofing contractors in ID offer free inspections and can document damage for your insurance claim at no upfront cost.

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

Hail damage repair costs in Caldwell 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. In most cases, if hail damage is confirmed, your homeowner's insurance will cover the cost of repair or replacement minus your deductible. Getting multiple contractor estimates before filing a claim is a smart approach.

What NOAA data does HailScore use for Caldwell?+

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 Caldwell, we analyze all radar-detected hail events within a 15-mile radius from 2015 to present, totaling over 62 verified events. Each record includes the storm's timestamp, geographic coordinates, and measured hail diameter in inches.

How accurate is HailScore data for Caldwell?+

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 detection has a small margin of error. Hail size estimates can vary by ±0.25 inch compared to ground truth measurements. 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 Caldwell 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

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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 Caldwell city center.