Oklahoma heat wave risk

77 counties scored 0 rated Very High

Tulsa County has the highest heat wave risk in Oklahoma, scoring 99.6 out of 100 — rated "Relatively High" by FEMA's National Risk Index. Recorded heat wave events across Oklahoma have increased 1443% over the past five years compared to the prior five-year period.

#	County	NRI score	Rating	NOAA events 2016–2026
1	Tulsa County	99.6	Relatively High	42
2	Oklahoma County	99.5	Relatively High	93
3	Cleveland County	97.3	Relatively High	63
4	Sequoyah County	95.2	Relatively Moderate	0
5	Rogers County	94.8	Relatively Moderate	38
6	Creek County	94.6	Relatively Moderate	36
7	Muskogee County	94.6	Relatively Moderate	39
8	Wagoner County	94	Relatively Moderate	39
9	Canadian County	93	Relatively Moderate	60
10	Cherokee County	93	Relatively Moderate	16
11	Pottawatomie County	92.7	Relatively Moderate	68
12	Le Flore County	92.5	Relatively Moderate	0
13	Bryan County	92.3	Relatively Moderate	84
14	Delaware County	92	Relatively Moderate	12
15	Carter County	91.9	Relatively Moderate	89
16	Washington County	91.1	Relatively Moderate	38
17	Osage County	90.9	Relatively Moderate	0
18	Mayes County	90.8	Relatively Moderate	35
19	Okmulgee County	90.8	Relatively Moderate	36
20	McIntosh County	90.5	Relatively Moderate	35
21	Pittsburg County	89.7	Relatively Moderate	22
22	Seminole County	87.7	Relatively Moderate	77
23	Logan County	86.8	Relatively Moderate	78
24	Payne County	86.7	Relatively Moderate	80
25	Garfield County	86.4	Relatively Moderate	65
26	Lincoln County	86.3	Relatively Moderate	70
27	Ottawa County	85.9	Relatively Moderate	19
28	Adair County	85.4	Relatively Moderate	7
29	Grady County	85.3	Relatively Moderate	86
30	Choctaw County	85.2	Relatively Moderate	18
31	Stephens County	82.9	Relatively Moderate	86
32	McCurtain County	82.8	Relatively Moderate	68
33	Kay County	81.4	Relatively Moderate	72
34	McClain County	81	Relatively Moderate	82
35	Pontotoc County	79	Relatively Moderate	80
36	Comanche County	77.5	Relatively Low	32
37	Garvin County	77.4	Relatively Low	82
38	Jackson County	76.9	Relatively Low	60
39	Woodward County	75.9	Relatively Low	26
40	Marshall County	74.9	Relatively Low	88
41	Caddo County	73.7	Relatively Low	47
42	Okfuskee County	73.4	Relatively Low	31
43	Pawnee County	73.3	Relatively Low	34
44	Craig County	73	Relatively Low	32
45	Pushmataha County	70.7	Relatively Low	22
46	Johnston County	70.1	Relatively Low	81
47	Kiowa County	69.1	Relatively Low	41
48	Latimer County	66	Relatively Low	23
49	Noble County	65.4	Relatively Low	72
50	Atoka County	64.9	Relatively Low	89
51	Grant County	64.8	Relatively Low	57
52	Murray County	64.7	Relatively Low	76
53	Nowata County	63.9	Relatively Low	37
54	Haskell County	63.5	Relatively Low	32
55	Kingfisher County	62.4	Relatively Low	83
56	Hughes County	61.8	Relatively Low	71
57	Custer County	61.7	Relatively Low	43
58	Beckham County	59.6	Relatively Low	39
59	Love County	55.9	Relatively Low	92
60	Jefferson County	49.9	Relatively Low	97
61	Coal County	49	Relatively Low	91
62	Tillman County	48.3	Relatively Low	77
63	Alfalfa County	47.8	Relatively Low	45
64	Major County	45.8	Relatively Low	48
65	Washita County	45.2	Relatively Low	36
66	Woods County	42.9	Relatively Low	43
67	Blaine County	41.1	Relatively Low	27
68	Greer County	40.4	Relatively Low	63
69	Cotton County	33.6	Very Low	59
70	Harper County	30	Very Low	27
71	Ellis County	28.9	Very Low	20
72	Dewey County	26.7	Very Low	28
73	Harmon County	25.7	Very Low	51
74	Roger Mills County	24.1	Very Low	11
75	Texas County	18.2	Very Low	0
76	Beaver County	10.5	Very Low	0
77	Cimarron County	3.3	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.

Heat Wave risk nationally:

Top 50 US counties

Other hazard risks in Oklahoma:

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

Frequently asked questions

What is the highest heat wave risk county in Oklahoma?

Tulsa County, OK has the highest heat wave risk in Oklahoma, with a FEMA National Risk Index score of 99.6 out of 100 (rated "Relatively High").

What causes heat wave risk in Oklahoma?

Heat is consistently the leading cause of weather-related mortality in the US, yet it remains underrepresented in federal disaster declarations relative to its actual impact. High scores reflect a combination of extreme temperature exposure, population vulnerability (elderly, outdoor workers), and limited access to cooling infrastructure.