Heat Wave Risk in Florida

All Florida counties ranked by FEMA National Risk Index heat wave score

Heat Wave risk — prolonged periods of extreme heat that threaten health and infrastructure — is rated for 67 of 67 Florida counties in FEMA's National Risk Index. Miami-Dade County carries the state's highest heat wave score at 99.3, with $31M in expected annual heat wave losses.

5 Florida counties are rated High or Very High for heat wave, and expected annual losses from heat wave total roughly $165M statewide. The full ranking below links to each county's complete 18-hazard risk profile.

County Rankings — Heat Wave

#CountyHeat Wave ScoreRatingAnn. Freq.Ann. Loss
1 Miami-Dade County
99.3
High 6.16 / yr $31M
2 Broward County
98.8
High 5.71 / yr $20M
3 Palm Beach County
98.2
High 4.67 / yr $13M
4 Hillsborough County
97.0
High 3.51 / yr $9M
5 Duval County
96.8
High 4.58 / yr $9M
6 Pinellas County
95.5
Medium 3.04 / yr $6M
7 Orange County
94.1
Medium 1.95 / yr $5M
8 Escambia County
94.1
Medium 8.90 / yr $5M
9 Collier County
93.7
Medium 5.23 / yr $4M
10 Polk County
93.6
Medium 3.21 / yr $4M
11 Lee County
93.2
Medium 2.44 / yr $3M
12 Leon County
91.9
Medium 6.58 / yr $4M
13 Marion County
90.5
Medium 3.07 / yr $2M
14 Pasco County
90.1
Medium 2.86 / yr $3M
15 Sarasota County
89.8
Medium 3.02 / yr $2M
16 Manatee County
88.9
Medium 3.50 / yr $2M
17 Okaloosa County
88.8
Medium 8.05 / yr $3M
18 Santa Rosa County
86.9
Medium 9.01 / yr $3M
19 Alachua County
86.3
Medium 3.30 / yr $2M
20 Brevard County
85.5
Medium 1.86 / yr $2M
21 Volusia County
85.5
Medium 1.74 / yr $2M
22 Bay County
84.3
Medium 6.70 / yr $2M
23 Clay County
82.5
Medium 3.73 / yr $2M
24 St. Johns County
82.2
Medium 3.75 / yr $2M
25 St. Lucie County
80.2
Medium 2.38 / yr $1M
26 Lake County
79.8
Medium 1.89 / yr $1M
27 Seminole County
77.8
Low 1.90 / yr $2M
28 Osceola County
77.3
Low 1.95 / yr $1M
29 Columbia County
76.2
Low 4.01 / yr $952K
30 Hernando County
76.1
Low 2.81 / yr $1M
31 Citrus County
75.9
Low 2.65 / yr $815K
32 Charlotte County
75.1
Low 2.51 / yr $839K
33 Sumter County
72.8
Low 2.79 / yr $689K
34 Highlands County
72.6
Low 3.21 / yr $596K
35 Nassau County
71.8
Low 4.20 / yr $1M
36 Flagler County
70.9
Low 3.46 / yr $801K
37 Walton County
69.4
Low 6.03 / yr $808K
38 Jackson County
68.5
Low 6.47 / yr $622K
39 Martin County
67.9
Low 2.33 / yr $656K
40 Gadsden County
67.7
Low 6.63 / yr $509K
41 Putnam County
66.3
Low 3.23 / yr $549K
42 Monroe County
65.8
Low 4.14 / yr $668K
43 Indian River County
63.1
Low 1.96 / yr $555K
44 Suwannee County
58.3
Low 3.95 / yr $444K
45 Baker County
57.4
Low 4.11 / yr $587K
46 Hendry County
54.0
Low 3.53 / yr $255K
47 Levy County
53.1
Low 2.85 / yr $259K
48 Taylor County
53.1
Low 6.54 / yr $284K
49 Washington County
49.9
Low 6.33 / yr $325K
50 DeSoto County
48.3
Low 3.21 / yr $200K
51 Bradford County
47.9
Low 3.64 / yr $314K
52 Wakulla County
46.9
Low 6.37 / yr $411K
53 Okeechobee County
46.5
Low 2.68 / yr $195K
54 Madison County
44.8
Low 5.48 / yr $206K
55 Jefferson County
44.7
Low 6.40 / yr $172K
56 Calhoun County
42.3
Low 6.95 / yr $192K
57 Holmes County
42.0
Low 5.85 / yr $227K
58 Hamilton County
40.8
Low 4.09 / yr $151K
59 Gulf County
39.0
Low 7.00 / yr $181K
60 Gilchrist County
37.5
Very Low 3.42 / yr $150K
61 Union County
36.6
Very Low 3.53 / yr $191K
62 Dixie County
36.5
Very Low 4.43 / yr $160K
63 Franklin County
35.9
Very Low 6.34 / yr $142K
64 Hardee County
34.3
Very Low 3.32 / yr $154K
65 Glades County
30.4
Very Low 3.63 / yr $80K
66 Lafayette County
25.7
Very Low 4.84 / yr $92K
67 Liberty County
24.1
Very Low 6.74 / yr $79K

67 Florida counties with measurable heat wave risk. See the national heat wave ranking or all Florida counties by overall risk.

Frequently Asked Questions

Which Florida county has the highest heat wave risk?

Miami-Dade County has the highest FEMA heat wave risk score in Florida at 99.3 (High), with $31M in expected annual losses and about 6.16 events per year.

How many Florida counties face significant heat wave risk?

67 Florida counties record measurable heat wave risk in FEMA's National Risk Index; 5 of them are rated High or Very High.

Other Hazards in Florida