Colorado hail risk

64 counties scored 4 rated Very High

Denver County has the highest hail risk in Colorado, scoring 99.9 out of 100 — rated "Very High" by FEMA's National Risk Index. NOAA has recorded 4,491 hail events across Colorado over the past decade.

#	County	NRI score	Rating	NOAA events 2016–2026
1	Denver County	99.9	Very High	127
2	Arapahoe County	99.8	Very High	158
3	Jefferson County	99.8	Very High	151
4	Adams County	99.7	Very High	141
5	El Paso County	99.1	Relatively High	756
6	Weld County	99	Relatively High	431
7	Douglas County	98.6	Relatively High	142
8	Boulder County	98.4	Relatively High	131
9	Larimer County	98.3	Relatively High	143
10	Pueblo County	98.2	Relatively High	139
11	Logan County	94.6	Relatively High	156
12	Morgan County	93.8	Relatively Moderate	108
13	Yuma County	92.9	Relatively Moderate	355
14	Broomfield County	91.4	Relatively Moderate	19
15	Kit Carson County	90.5	Relatively Moderate	231
16	Elbert County	89.1	Relatively Moderate	165
17	Prowers County	88.5	Relatively Moderate	94
18	Fremont County	83.8	Relatively Moderate	21
19	Teller County	78.8	Relatively Moderate	25
20	Summit County	78.5	Relatively Moderate	1
21	Otero County	77.8	Relatively Moderate	47
22	Phillips County	77.4	Relatively Moderate	60
23	Washington County	76.5	Relatively Moderate	171
24	Grand County	75.6	Relatively Moderate	1
25	Clear Creek County	74.6	Relatively Moderate	3
26	Park County	73.3	Relatively Moderate	13
27	Baca County	71.1	Relatively Low	78
28	Lincoln County	67	Relatively Low	178
29	Gilpin County	64.7	Relatively Low	1
30	Bent County	64.3	Relatively Low	47
31	Sedgwick County	64.3	Relatively Low	36
32	Crowley County	61.2	Relatively Low	33
33	Cheyenne County	57.9	Relatively Low	114
34	Kiowa County	55.7	Relatively Low	60
35	Alamosa County	47.3	Relatively Low	0
36	Huerfano County	46.9	Relatively Low	12
37	Las Animas County	40.5	Relatively Low	80
38	Chaffee County	39.8	Relatively Low	3
39	Custer County	32	Very Low	12
40	Eagle County	30.9	Very Low	0
41	Mesa County	21.2	Very Low	14
42	Saguache County	19.4	Very Low	2
43	Costilla County	18.8	Very Low	0
44	Montezuma County	18.5	Very Low	3
45	Rio Grande County	18.5	Very Low	2
46	Lake County	17.7	Very Low	0
47	Jackson County	12.2	Very Low	1
48	Rio Blanco County	11.9	Very Low	4
49	Conejos County	11.2	Very Low	0
50	Garfield County	9.5	Very Low	3
51	Delta County	7.5	Very Low	0
52	Montrose County	7.1	Very Low	4
53	La Plata County	6.3	Very Low	7
54	Pitkin County	5.1	Very Low	0
55	Routt County	4.6	Very Low	0
56	Gunnison County	4.3	Very Low	0
57	Moffat County	4.3	Very Low	4
58	Archuleta County	3.3	Very Low	1
59	Dolores County	2	Very Low	1
60	Ouray County	1.7	Very Low	0
61	San Miguel County	1.6	Very Low	1
62	Hinsdale County	1	Very Low	1
63	Mineral County	1	Very Low	0
64	San Juan County	1	Very Low	0

Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.

Hail risk nationally:

Top 50 US counties

Other hazard risks in Colorado:

Wildfire Inland Flooding Coastal Flooding Earthquake Heat Wave Tornado Hurricane Strong Wind Winter Weather Ice Storm Cold Wave Lightning Drought Landslide Avalanche Tsunami Volcanic Activity

Frequently asked questions

What is the highest hail risk county in Colorado?

Denver County, CO has the highest hail risk in Colorado, with a FEMA National Risk Index score of 99.9 out of 100 (rated "Very High").

How many counties in Colorado are rated Very High for hail risk?

4 of 64 scored Colorado counties are rated "Very High" for hail risk by FEMA's National Risk Index.

What causes hail risk in Colorado?

Hail risk reflects expected annual losses from damaging hailstones to structures, vehicles, and crops. High scores cluster in the central plains and Front Range — a corridor sometimes called "Hail Alley" — where large-diameter hail is most frequent. Hail causes over $10 billion in US property damage in active years, much of it to roofs, vehicles, and crops.