Grayson County, Texas Hail and Storm History
Every hail, damaging wind, and tornado report in Grayson County in National Weather Service records since 1952: when storms hit, how big the hail got, and when hail season peaks.
- Most recent hail
- May 2026
- 2", hen egg size
- Hail days, last 10 years
- 56
- Largest hail on record
- 4.5"
- softball size, 1996
- Tornadoes since 1952
- 72
- Last: June 2025
NOAA records through June 30, 2026
Did the last storm damage your roof?
Send one photo. You'll get a Damage Score, a typical repair cost for your area, and the right next step, so you know what you're dealing with before you call anyone.
What stands out about storms in Grayson County
- Grayson County has had more hail days in the past 10 years than 96% of Texas counties.
- The most recent reported hail was 2" (hen egg size) on May 10, 2026.
- Hail here has reached 4.5" (softball size), on April 21, 1996: large enough to damage shingles, gutters, and siding.
- 68% of hail days here fall in March, April, and May.
- 72 tornadoes have been reported here since 1952, the strongest rated F3.
- Measured thunderstorm gusts here have reached 75 mph.
Storm days per year
Days with at least one hail report, and days with thunderstorm winds of 58 mph or more, in Grayson County.
| Period | Hail days | Damaging wind days |
|---|---|---|
| 2007 | 3 | 6 |
| 2008 | 2 | 7 |
| 2009 | 7 | 6 |
| 2010 | 3 | 3 |
| 2011 | 8 | 10 |
| 2012 | 4 | 6 |
| 2013 | 2 | 2 |
| 2014 | 5 | 4 |
| 2015 | 3 | 1 |
| 2016 | 4 | 3 |
| 2017 | 2 | 5 |
| 2018 | 4 | 1 |
| 2019 | 8 | 5 |
| 2020 | 3 | 5 |
| 2021 | 5 | 2 |
| 2022 | 4 | 2 |
| 2023 | 8 | 6 |
| 2024 | 9 | 5 |
| 2025 | 9 | 6 |
| 2026 | 4 | 2 |
When hail season peaks
Hail days by month over the past 20 years. Hail is most common in March, April, and May, peaking in May.
| Period | Hail days |
|---|---|
| Jan | 0 |
| Feb | 4 |
| Mar | 15 |
| Apr | 21 |
| May | 30 |
| Jun | 12 |
| Jul | 0 |
| Aug | 3 |
| Sep | 4 |
| Oct | 5 |
| Nov | 3 |
| Dec | 0 |
Recent storms
The latest storm days in Grayson County, one line per storm type per day.
May 10, 2026 · Hail up to 2" (hen egg size)
3 reports, including near Southmayd
NWS: “A trained spotter reported 2 inch diameter hail between Southmayd and Sherman.”
May 9, 2026 · Hail up to 1" (quarter size)
1 report, including near Pottsboro Loes Arpt
NWS: “A social media post indicated quarter sized hail in Preston Shores on the south side of Lake Texoma.”
April 28, 2026 · Thunderstorm wind up to 69 mph
1 report, including near Red Branch
NWS: “A public report indicated tree damage at a home near Dexter. Many tree limbs were down or snapped, and a large limb fell on top of the house.”
April 26, 2026 · Hail up to 3.5" (teacup size)
12 reports, including near Whiterock
NWS: “Emergency manager reported 3.5 inch hail at the intersection of Marlow Road and Rochelle Canyon road.”
April 15, 2026 · Thunderstorm wind up to 63 mph
1 report, including near Sherman Muni Arpt
NWS: “A social media picture indicated a tree down on North Travis Street near Highway 75 in Sherman.”
April 15, 2026 · Hail up to 1" (quarter size)
1 report, including near South Gale
NWS: “A public mPing report indicated quarter sized hail on Highway 1753 southeast of Denison.”
September 23, 2025 · Hail up to 2" (hen egg size)
4 reports, including near Whitesboro
NWS: “One to two inch sized hail was reported in Whitesboro for several minutes.”
September 21, 2025 · Thunderstorm wind up to 70 mph
2 reports, including near White Mound
NWS: “Eleven wooden power and communication poles were broken along Highway 902 east of Howe between the power substation and Harrell Rd.”
What to check after a storm
Roof damage costs
Missing or creased shingles, dents, and bare spots where granules came off. Roof repair after hail is the most common claim.
Gutters damage costs
Dents in gutters and downspouts, and granules collecting at the downspout outlets.
Siding damage costs
Cracks, chips, and holes in vinyl, fiber cement, and trim, usually on the side the storm came from.
Timing matters. Many insurance policies set a deadline for reporting storm damage, and it varies by insurer and state. Check your policy before assuming it's too late.
Protect your things from a roof leak
Stay off the roof, especially when it's wet or damaged. A licensed roofer should inspect it.
- Plastic sheeting(opens Amazon in a new tab)
Covers floors and furniture under a leak.
- Wet/dry vac(opens Amazon in a new tab)
Pulls up standing water fast.
- Moisture meter(opens Amazon in a new tab)
Shows whether a ceiling or wall is still wet.
- Binoculars(opens Amazon in a new tab)
Check your roof from the ground, never from a ladder.
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Nearby counties
Towns in Grayson County
Bells, Collinsville, Denison, Gordonville, Gunter, Howe, Pottsboro, Sadler, Sherman, Southmayd, Tioga, Tom Bean, Van Alstyne, Whitesboro, Whitewright.
Common questions
When was the last hail storm in Grayson County?
The most recent hail reported in Grayson County was 2" (hen egg size) on May 10, 2026, in National Weather Service records through June 30, 2026.
How often does it hail in Grayson County?
There were 56 days with reported hail in Grayson County in the past 10 years, and 40 days with thunderstorm winds of 58 mph or more.
When is hail season in Grayson County?
Hail is most common in March, April, and May, peaking in May.
What is the largest hail ever reported in Grayson County?
4.5" (softball size), on April 21, 1996.
How do I know if my roof has hail damage?
Look for dents or dark spots where granules are knocked off shingles, dents in gutters, downspouts, and AC fins, and cracked or chipped siding. It's often hard to see from the ground, so send a photo for a Damage Score, and have a licensed roofer inspect before you decide anything.
About this data
Storm reports come from the National Weather Service, published in NOAA's Storm Events Database, through June 30, 2026. NOAA publishes them about 3 to 4 months after each storm. A report means hail or wind was observed nearby, not that any particular home was damaged. DamageScore is not affiliated with NOAA or the National Weather Service. How we use this data
AI estimate, not an inspection. This score comes from a photo, and a photo can't show everything. Whatever the score, always have a licensed professional inspect the damage before you make repair, safety, or insurance decisions. Cost ranges are typical figures for your area, not quotes. We never tell you whether to file an insurance claim.
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