Heat Wave Risk in Indiana

All Indiana 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 92 of 92 Indiana counties in FEMA's National Risk Index. Marion County carries the state's highest heat wave score at 98.7, with $20M in expected annual heat wave losses.

1 Indiana county is rated High or Very High for heat wave, and expected annual losses from heat wave total roughly $75M 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 Marion County
98.7
High 4.37 / yr $20M
2 Vanderburgh County
93.4
Medium 8.37 / yr $4M
3 Lake County
92.8
Medium 3.16 / yr $4M
4 Hamilton County
86.0
Medium 4.32 / yr $4M
5 Tippecanoe County
85.9
Medium 4.58 / yr $2M
6 Monroe County
84.6
Medium 5.63 / yr $2M
7 Vigo County
83.2
Medium 5.79 / yr $2M
8 St. Joseph County
79.2
Medium 4.10 / yr $2M
9 Grant County
76.6
Low 5.26 / yr $1M
10 Hendricks County
75.9
Low 4.42 / yr $2M
11 Warrick County
75.8
Low 8.16 / yr $1M
12 Madison County
74.1
Low 4.16 / yr $1M
13 Elkhart County
72.9
Low 4.05 / yr $993K
14 Allen County
72.5
Low 4.95 / yr $1M
15 Porter County
70.4
Low 3.11 / yr $1M
16 Howard County
69.1
Low 4.26 / yr $875K
17 Gibson County
68.8
Low 8.37 / yr $1M
18 LaPorte County
67.6
Low 4.00 / yr $768K
19 Daviess County
66.3
Low 6.11 / yr $573K
20 Johnson County
65.6
Low 4.58 / yr $1M
21 Adams County
65.4
Low 5.00 / yr $519K
22 Dubois County
63.5
Low 5.89 / yr $744K
23 Morgan County
63.3
Low 4.63 / yr $762K
24 Cass County
63.3
Low 5.16 / yr $546K
25 Knox County
62.5
Low 6.16 / yr $667K
26 Lawrence County
62.3
Low 5.74 / yr $690K
27 Floyd County
61.2
Low 5.58 / yr $661K
28 Bartholomew County
60.8
Low 5.21 / yr $686K
29 Greene County
59.7
Low 5.89 / yr $577K
30 Clark County
59.5
Low 5.47 / yr $684K
31 Posey County
58.4
Low 8.42 / yr $605K
32 Kosciusko County
57.5
Low 4.74 / yr $508K
33 Boone County
55.9
Low 4.42 / yr $914K
34 Huntington County
55.3
Low 5.16 / yr $552K
35 Spencer County
54.7
Low 8.00 / yr $479K
36 Montgomery County
53.7
Low 4.42 / yr $457K
37 Whitley County
53.1
Low 4.95 / yr $497K
38 Putnam County
52.4
Low 4.58 / yr $446K
39 Miami County
51.5
Low 5.26 / yr $363K
40 Harrison County
51.0
Low 5.74 / yr $420K
41 Orange County
50.8
Low 5.68 / yr $351K
42 Owen County
49.8
Low 5.58 / yr $342K
43 Wayne County
49.5
Low 5.16 / yr $272K
44 Clay County
49.5
Low 5.63 / yr $427K
45 Pike County
49.1
Low 8.16 / yr $306K
46 Clinton County
48.9
Low 4.37 / yr $396K
47 Wells County
47.8
Low 5.00 / yr $410K
48 Perry County
47.5
Low 6.05 / yr $341K
49 Jackson County
47.3
Low 5.47 / yr $409K
50 Sullivan County
47.2
Low 6.11 / yr $350K
51 Hancock County
45.7
Low 4.42 / yr $490K
52 Parke County
45.2
Low 4.63 / yr $252K
53 Washington County
44.7
Low 5.63 / yr $289K
54 Marshall County
44.0
Low 4.63 / yr $318K
55 Crawford County
43.8
Low 5.89 / yr $187K
56 White County
43.4
Low 5.05 / yr $281K
57 Jasper County
41.4
Low 3.95 / yr $298K
58 Shelby County
40.4
Low 4.58 / yr $278K
59 Wabash County
39.5
Low 5.16 / yr $213K
60 Vermillion County
38.4
Very Low 4.68 / yr $196K
61 LaGrange County
38.0
Very Low 3.95 / yr $115K
62 Fountain County
37.7
Very Low 4.53 / yr $223K
63 Fulton County
37.6
Very Low 4.89 / yr $197K
64 Blackford County
36.4
Very Low 5.05 / yr $177K
65 Carroll County
36.3
Very Low 4.47 / yr $244K
66 Dearborn County
35.8
Very Low 6.37 / yr $242K
67 Martin County
35.7
Very Low 6.00 / yr $181K
68 Delaware County
35.5
Very Low 4.16 / yr $172K
69 Starke County
35.1
Very Low 4.63 / yr $177K
70 Ripley County
33.3
Very Low 6.32 / yr $154K
71 Brown County
33.0
Very Low 5.37 / yr $151K
72 Jefferson County
32.9
Very Low 4.79 / yr $166K
73 Scott County
31.9
Very Low 5.32 / yr $170K
74 Pulaski County
30.3
Very Low 4.89 / yr $139K
75 Jennings County
29.1
Very Low 5.37 / yr $120K
76 Noble County
28.5
Very Low 4.47 / yr $115K
77 Tipton County
28.5
Very Low 4.26 / yr $192K
78 Newton County
27.6
Very Low 4.00 / yr $130K
79 Steuben County
27.0
Very Low 3.79 / yr $125K
80 Henry County
26.6
Very Low 4.21 / yr $113K
81 Fayette County
26.6
Very Low 5.37 / yr $100K
82 DeKalb County
25.2
Very Low 4.37 / yr $102K
83 Franklin County
23.9
Very Low 5.95 / yr $102K
84 Warren County
23.1
Very Low 4.63 / yr $101K
85 Benton County
22.3
Very Low 4.21 / yr $81K
86 Decatur County
20.8
Very Low 4.84 / yr $102K
87 Switzerland County
19.9
Very Low 6.42 / yr $62K
88 Randolph County
18.8
Very Low 4.05 / yr $50K
89 Jay County
16.6
Very Low 5.05 / yr $42K
90 Rush County
15.9
Very Low 4.53 / yr $44K
91 Ohio County
11.8
Very Low 6.42 / yr $28K
92 Union County
11.6
Very Low 5.37 / yr $31K

92 Indiana counties with measurable heat wave risk. See the national heat wave ranking or all Indiana counties by overall risk.

Frequently Asked Questions

Which Indiana county has the highest heat wave risk?

Marion County has the highest FEMA heat wave risk score in Indiana at 98.7 (High), with $20M in expected annual losses and about 4.37 events per year.

How many Indiana counties face significant heat wave risk?

92 Indiana counties record measurable heat wave risk in FEMA's National Risk Index; 1 of them are rated High or Very High.

Other Hazards in Indiana

Coastal Flood Cold Wave Drought Earthquake Hail Hurricane Ice Storm Riverine Flood Landslide Lightning Strong Wind Tornado Wildfire Winter Weather