Hail in Jefferson County, MT
NOAA radar has confirmed 1 hail event of 1 inch or larger in Jefferson County since 2025, the largest 1″ (quarter) on July 28, 2025. The most recent confirmed hail was July 28, 2025.
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About Jefferson County, MT
Jefferson County lies in the mountains of southwestern Montana, a rugged country of Rocky Mountain ranges and high valleys between the Helena and Butte areas. Hail is rare here; the high, dry air can fire summer storms, but they seldom organize into the long-lived cells that build large stones. The Great Falls (KTFX) radar sits about 97 miles to the north, far enough that it detects storm tops more readily than near-ground detail across the ranges. A summer afternoon storm over the high country may drop small hail.
The hail record for Jefferson County, MT
Most confirmed hail in Jefferson County falls between spring and early summer, with July the busiest month.
Damaging hail is the exception rather than the rule in Jefferson County, but the record shows it does reach 1″ when it arrives.
Common questions
How often does it hail in Jefferson County?
NOAA radar has confirmed 1 severe hail event (1 inch or larger) in the Jefferson County area since 2025.
When is hail season in Jefferson County?
Hail in Jefferson County is concentrated in July, within a season that runs spring into early summer.
What's the largest hail recorded in Jefferson County?
Radar confirmed 1-inch hail, about quarter size, on July 28, 2025.
Does homeowner's insurance cover hail damage?
Hail is a covered peril under most standard homeowner's policies (typically HO-3), subject to your deductible. Whether you have replacement-cost or actual-cash-value coverage makes a big difference in what's paid out. Your declarations page will say which.
Is Jefferson County's hail big enough to damage a roof?
It can be. Asphalt shingles can begin showing functional damage in the ¾-to-1-inch range, and Jefferson County's confirmed hail reaches 1″. At these sizes damage is often hard to see from the ground, so whether it's a claimable loss depends on shingle type, age, and an inspection.
Did it hail in Jefferson County in 2026?
No 1-inch-or-larger hail has been confirmed in Jefferson County so far in 2026.
How much does hail roof damage cost to repair?
It ranges widely. Minor repairs can run a few hundred dollars, while a full roof replacement on an average home often runs $8,000–$20,000+ depending on size, pitch, and material. What you actually pay depends on your deductible and whether your policy is replacement-cost or actual-cash-value.
Recent confirmed hail near Jefferson County, MT
What this means for your home
Damage can be invisible from the ground
At Jefferson County's typical sizes, hail often bruises shingles and loosens granules without obvious holes, shortening roof life in ways that are easy to miss until the next storm or an inspection.
Document before you repair
If you suspect hail damage, photograph it and note the storm's date before making any repairs. Undocumented or already-fixed damage is much harder to claim later.
Get more than one estimate
After a damaging storm, reputable local roofers get busy and out-of-town crews flood in. Get multiple written estimates and verify licensing and local references before signing anything.
Replacement cost vs. actual cash value
An RCV policy pays to replace your roof at today's prices; an ACV policy subtracts depreciation for the roof's age, which can mean a much smaller check on an older roof. Knowing which you carry shapes what a hail claim is actually worth.
Know your hail deductible
Many policies in hail-prone states use a percentage deductible, often 1–2% of the home's insured value rather than a flat dollar amount. On a $400,000 home that can be $4,000–$8,000 out of pocket before coverage starts, so it's worth checking your declarations page before a storm.
Claims have deadlines
Policies set a deadline for hail-damage claims, and state law may also apply. Windows range from months to several years depending on your state and policy. Knowing the exact date hail hit your address helps you file on time.
Before you call your insurer
Get the radar evidence for your address.
A NOAA Radar Evidence Report documents exactly what federal radar recorded at your address - hail size, date, and signature - in a formatted PDF you can attach to a claim. Built entirely from public NOAA data.
Events are NOAA/NWS Severe Thunderstorm Warnings with confirmed hail ≥ 1 inch, matched to this county by the warning centroid. Federal public-domain data. A confirmed event indicates radar-detected hail over the area, not a guarantee of damage to any specific property.