HailHistory › Hail by county › Arizona

Arizona · 15 counties

Hail history in Arizona

Arizona has 1,318 recorded hail events in the NOAA Storm Events Database since 1950 — 765 of them 1″ or larger. The largest on record: 4.5″ (grapefruit) in Yavapai County on September 28, 1995.

Recorded events 1,318 since 1950
1″ or larger 765 NWS severe threshold
Largest recorded 4.5″ grapefruit · Yavapai County
Peak month Aug most recorded events

When it hails in Arizona

6 Jan 12 Feb 28 Mar 8 Apr 33 May 60 Jun 310 Jul 343 Aug 318 Sep 169 Oct 23 Nov 8 Dec

All recorded Arizona events by month, 1950–present · data through April 2026.

Every Arizona county, ranked by recorded hail

Recorded hail events per county · NOAA Storm Events Database · through April 2026
County Events ≥1″ Largest Most recent
Maricopa County 227 125 3.0″ 2025
Pima County 189 108 3.0″ 2025
Yavapai County 183 115 4.5″ 2025
Coconino County 177 111 3.0″ 2025
Cochise County 125 68 2.0″ 2025
Mohave County 87 47 1.75″ 2025
Pinal County 78 42 2.0″ 2025
Gila County 74 40 3.0″ 2025
Navajo County 58 36 2.75″ 2024
Santa Cruz County 40 28 1.75″ 2025
Yuma County 22 9 1.5″ 2022
Apache County 21 15 1.75″ 2024
Graham County 19 11 4.0″ 2025
Greenlee County 9 5 1.75″ 2013
La Paz County 9 5 1.75″ 2018
Read the record honestly: Storm Events contains what was reported to the National Weather Service. Populated counties report more; rural counties under-report. County-to-county comparisons say as much about reporting as about weather.

Questions about hail in Arizona

How often does it hail in Arizona?

The NOAA Storm Events Database records 1,318 hail events for Arizona since 1950, 765 of them 1″ (quarter size) or larger. Recorded frequency varies sharply by county — the table on this page ranks all 15.

What is the largest hail ever recorded in Arizona?

4.5″ (grapefruit), recorded in Yavapai County on September 28, 1995. See it at true size on the actual-size hail chart.

When is hail season in Arizona?

Recorded events peak in August. The by-month chart on this page shows the full seasonal shape — and each county page carries its own, since timing shifts across the state.

How do I check hail history for my address in Arizona?

Storm Events records events at the county level, so pick your county below or use the ZIP lookup. For "did it hail on this date" claim questions, the date lookup searches every recorded Arizona event.

Source: NOAA/NCEI Storm Events Database, public domain. Each county page shows the full event timeline, month profile, and storm-report narratives.