Heat Index Forecast Tables
Issued by NWS
Issued by NWS
831
FMUS23 KWNH 120701
PRBEHI
DAYS 3--7 HEAT INDEX FORECAST TABLES
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
0659 UTC MON MAY 12 2025
MEAN HEAT INDEX (DEG F) AND MEAN HI PROB (%) FRCSTS
AT EASTERN US CITIES - DAYS 3 TO 7 FROM MON MAY 12 2025
AKRON-CANTON_OH ALBANY_NY
CAK 0515 0516 0517 0518 0519 ALB 0515 0516 0517 0518 0519
MEAN 71 75 69 62 61 MEAN 67 72 69 63 61
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 0 0 0 0 0 %>90 0 0 0 0 0
%>85 0 1 1 0 0 %>85 0 1 0 0 0
%>80 1 13 5 1 1 %>80 0 6 2 1 0
%>75 14 50 19 4 4 %>75 5 26 13 4 2
%>70 65 87 44 14 14 %>70 28 62 45 16 9
ASHEVILLE_NC ATLANTA_GA
AVL 0515 0516 0517 0518 0519 ATL 0515 0516 0517 0518 0519
MEAN 70 74 72 69 71 MEAN 78 81 80 79 80
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 1 1 1
%>90 0 0 0 0 1 %>90 0 2 7 5 7
%>85 0 1 1 1 4 %>85 2 19 24 18 23
%>80 0 9 6 4 12 %>80 27 62 52 44 51
%>75 6 39 27 16 31 %>75 80 93 80 73 78
%>70 45 79 62 44 56 %>70 99 100 94 92 93
BALTIMORE_MD BIRMINGHAM_AL
BWI 0515 0516 0517 0518 0519 BHM 0515 0516 0517 0518 0519
MEAN 72 77 76 72 72 MEAN 79 81 80 79 82
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 1 1 2
%>90 0 0 0 0 2 %>90 0 1 5 5 11
%>85 0 5 3 2 7 %>85 3 14 19 18 31
%>80 1 27 21 11 18 %>80 36 59 47 44 60
%>75 20 67 60 33 36 %>75 88 93 77 73 84
%>70 77 94 91 63 58 %>70 100 100 94 92 96
BOSTON_MA BUFFALO_NY
BOS 0515 0516 0517 0518 0519 BUF 0515 0516 0517 0518 0519
MEAN 63 67 68 65 63 MEAN 68 70 64 56 55
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 0 0 0 0 0 %>90 0 0 0 0 0
%>85 0 0 1 0 1 %>85 0 0 0 0 0
%>80 0 1 6 2 2 %>80 0 2 1 0 0
%>75 0 7 19 9 8 %>75 1 13 4 0 0
%>70 4 30 41 24 19 %>70 24 52 16 2 1
CHARLESTON_SC CHARLESTON_WV
CHS 0515 0516 0517 0518 0519 CRW 0515 0516 0517 0518 0519
MEAN 80 85 86 84 85 MEAN 74 77 74 69 72
%>100 0 0 0 0 2 %>100 0 0 0 0 0
%>95 0 0 2 3 9 %>95 0 0 0 0 1
%>90 0 10 17 14 25 %>90 0 1 0 0 3
%>85 1 53 55 42 50 %>85 1 7 3 1 8
%>80 47 93 89 76 75 %>80 10 30 15 6 20
%>75 99 100 99 95 91 %>75 43 67 41 20 37
%>70 100 100 100 99 98 %>70 82 92 72 46 58
CHARLOTTE_NC CHICAGO_IL
CLT 0515 0516 0517 0518 0519 ORD 0515 0516 0517 0518 0519
MEAN 75 81 80 77 79 MEAN 76 69 61 60 60
%>100 0 0 0 0 1 %>100 0 0 0 0 0
%>95 0 0 1 0 2 %>95 0 0 0 0 0
%>90 0 3 4 1 9 %>90 1 0 0 0 0
%>85 0 20 18 8 23 %>85 8 1 0 0 1
%>80 10 60 47 28 45 %>80 28 5 0 1 2
%>75 55 91 78 60 69 %>75 59 19 2 4 6
%>70 94 99 95 87 87 %>70 83 45 10 12 15
CINCINNATI_OH CLEVELAND_OH
LUK 0515 0516 0517 0518 0519 CLE 0515 0516 0517 0518 0519
MEAN 76 77 72 68 71 MEAN 71 73 67 62 61
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 1 %>95 0 0 0 0 0
%>90 0 1 1 0 3 %>90 0 0 0 0 0
%>85 4 6 4 1 9 %>85 0 1 1 0 0
%>80 22 28 13 6 20 %>80 2 8 4 2 1
%>75 58 66 34 18 36 %>75 20 35 14 6 4
%>70 88 92 62 40 55 %>70 59 72 35 16 12
COLUMBIA_SC COLUMBUS_OH
CAE 0515 0516 0517 0518 0519 TZR 0515 0516 0517 0518 0519
MEAN 78 84 83 81 82 MEAN 74 77 71 65 67
%>100 0 0 0 0 1 %>100 0 0 0 0 0
%>95 0 0 2 1 5 %>95 0 0 0 0 0
%>90 0 5 10 5 15 %>90 0 0 0 0 1
%>85 2 36 35 22 35 %>85 1 3 2 0 2
%>80 30 84 70 54 61 %>80 10 22 10 2 7
%>75 88 99 92 83 83 %>75 41 63 29 7 18
%>70 100 100 99 96 95 %>70 81 93 57 23 36
DAYTON_OH DETROIT_MI
MGY 0515 0516 0517 0518 0519 DET 0515 0516 0517 0518 0519
MEAN 76 77 71 67 69 MEAN 71 73 66 61 59
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 1 %>95 0 0 0 0 0
%>90 0 0 0 0 2 %>90 0 0 0 0 0
%>85 4 5 2 1 6 %>85 0 0 0 0 0
%>80 21 26 10 4 15 %>80 1 6 2 1 0
%>75 55 63 28 13 29 %>75 16 30 8 4 2
%>70 86 91 56 33 48 %>70 63 71 25 12 8
EVANSVILLE_IN GRAND_RAPIDS_MI
EVV 0515 0516 0517 0518 0519 GRR 0515 0516 0517 0518 0519
MEAN 80 78 72 71 74 MEAN 74 70 59 56 59
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 1 %>95 0 0 0 0 0
%>90 1 1 0 1 4 %>90 0 0 0 0 0
%>85 10 9 2 3 11 %>85 1 2 0 0 0
%>80 50 33 11 12 25 %>80 8 8 0 0 1
%>75 90 69 33 31 46 %>75 40 23 1 0 3
%>70 99 92 65 58 68 %>70 82 49 6 2 10
GREENSBORO_NC HUNTSVILLE_AL
GSO 0515 0516 0517 0518 0519 HSV 0515 0516 0517 0518 0519
MEAN 73 80 77 74 76 MEAN 79 81 79 78 81
%>100 0 0 0 0 0 %>100 0 0 0 0 1
%>95 0 0 0 0 1 %>95 0 0 1 2 5
%>90 0 1 1 0 3 %>90 1 5 4 8 14
%>85 0 13 7 3 12 %>85 9 23 16 20 30
%>80 2 47 30 16 29 %>80 40 59 41 41 52
%>75 32 84 67 45 54 %>75 81 88 70 65 74
%>70 85 98 92 76 77 %>70 98 98 90 84 89
INDIANAPOLIS_IN KNOXVILLE_TN
IND 0515 0516 0517 0518 0519 TYS 0515 0516 0517 0518 0519
MEAN 78 75 69 67 70 MEAN 76 79 75 74 76
%>100 0 0 0 0 0 %>100 0 0 0 0 1
%>95 0 0 0 0 1 %>95 0 0 0 0 2
%>90 1 1 0 0 2 %>90 0 2 1 1 7
%>85 8 5 1 1 6 %>85 3 13 6 6 17
%>80 33 20 6 5 15 %>80 18 40 21 19 34
%>75 70 50 20 15 30 %>75 55 73 49 42 55
%>70 93 80 45 34 49 %>70 88 93 78 69 74
LEXINGTON_KY LOUISVILLE_KY
LEX 0515 0516 0517 0518 0519 SDF 0515 0516 0517 0518 0519
MEAN 76 77 72 69 72 MEAN 78 78 73 71 73
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 1 %>95 0 0 0 0 1
%>90 0 0 0 0 3 %>90 1 1 0 1 4
%>85 2 4 1 1 8 %>85 8 8 3 3 11
%>80 18 25 7 6 20 %>80 35 33 13 11 24
%>75 59 66 28 20 38 %>75 74 71 37 29 43
%>70 91 93 62 46 60 %>70 96 94 67 54 64
MEMPHIS_TN MIAMI_FL
MEM 0515 0516 0517 0518 0519 MIA 0515 0516 0517 0518 0519
MEAN 81 81 79 79 82 MEAN 83 86 88 88 88
%>100 0 0 0 0 1 %>100 0 0 0 0 0
%>95 0 0 1 2 5 %>95 0 0 1 1 2
%>90 1 4 6 8 15 %>90 1 7 22 21 26
%>85 14 20 19 23 35 %>85 26 65 80 80 82
%>80 60 54 45 46 61 %>80 91 99 99 99 99
%>75 95 85 73 71 82 %>75 100 100 100 100 100
%>70 100 98 91 88 94 %>70 100 100 100 100 100
MILWAUKEE_WI MOBILE_AL
MKE 0515 0516 0517 0518 0519 MOB 0515 0516 0517 0518 0519
MEAN 66 63 57 52 52 MEAN 84 85 85 85 85
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 1 0
%>90 0 0 0 0 0 %>90 2 2 8 10 6
%>85 0 0 0 0 0 %>85 32 45 51 48 48
%>80 2 0 0 0 0 %>80 87 97 93 89 93
%>75 9 3 0 0 0 %>75 100 100 100 99 100
%>70 26 13 1 1 1 %>70 100 100 100 100 100
NASHVILLE_TN NEW_YORK_CITY_NY
BNA 0515 0516 0517 0518 0519 NYC 0515 0516 0517 0518 0519
MEAN 80 80 77 76 79 MEAN 67 69 73 69 68
%>100 0 0 0 0 1 %>100 0 0 0 0 0
%>95 0 0 0 1 4 %>95 0 0 0 0 0
%>90 1 2 1 3 11 %>90 0 0 1 0 0
%>85 9 16 8 11 24 %>85 0 0 4 1 1
%>80 47 49 28 29 44 %>80 0 0 15 4 4
%>75 88 83 60 54 66 %>75 3 7 40 18 15
%>70 99 97 87 78 83 %>70 22 38 69 46 37
NORFOLK_VA ORLANDO_FL
ORF 0515 0516 0517 0518 0519 ORL 0515 0516 0517 0518 0519
MEAN 75 82 82 78 77 MEAN 82 83 87 89 88
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 2 2 1 2 %>95 0 0 0 7 2
%>90 0 9 10 5 6 %>90 0 0 13 38 30
%>85 1 29 29 16 17 %>85 11 27 70 82 83
%>80 9 61 59 38 35 %>80 78 91 99 98 99
%>75 43 87 85 66 58 %>75 100 100 100 100 100
%>70 90 98 97 87 78 %>70 100 100 100 100 100
PHILADELPHIA_PA PITTSBURGH_PA
PHL 0515 0516 0517 0518 0519 PIT 0515 0516 0517 0518 0519
MEAN 71 74 76 71 70 MEAN 71 74 70 64 63
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 0 0 0 0 0 %>90 0 0 0 0 0
%>85 0 0 4 1 2 %>85 0 1 1 0 0
%>80 0 8 22 5 9 %>80 0 9 5 1 2
%>75 8 44 58 23 25 %>75 10 44 21 6 7
%>70 62 86 88 56 49 %>70 62 85 51 19 20
PORTLAND_ME PROVIDENCE_RI
PWM 0515 0516 0517 0518 0519 PVD 0515 0516 0517 0518 0519
MEAN 55 59 59 58 56 MEAN 65 68 70 68 65
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 0 0 0 0 0 %>90 0 0 0 0 0
%>85 0 0 0 0 0 %>85 0 0 1 1 1
%>80 0 0 0 0 0 %>80 0 0 6 3 3
%>75 0 0 2 1 0 %>75 0 3 23 14 10
%>70 0 2 7 4 2 %>70 6 28 51 37 25
RALEIGH-DURHAM_NC RICHMOND_VA
RDU 0515 0516 0517 0518 0519 RIC 0515 0516 0517 0518 0519
MEAN 77 84 82 77 79 MEAN 75 82 80 76 76
%>100 0 0 0 0 1 %>100 0 0 0 0 0
%>95 0 1 2 0 3 %>95 0 0 0 0 1
%>90 0 11 9 3 11 %>90 0 5 3 1 5
%>85 2 41 30 12 25 %>85 0 27 19 5 13
%>80 21 77 62 35 46 %>80 8 66 52 22 30
%>75 66 96 87 65 69 %>75 51 93 83 53 53
%>70 95 100 97 88 86 %>70 93 99 97 82 75
SAVANNAH_GA TALLAHASSEE_FL
SAV 0515 0516 0517 0518 0519 TLH 0515 0516 0517 0518 0519
MEAN 81 86 86 85 86 MEAN 82 86 85 85 85
%>100 0 0 0 1 1 %>100 0 0 0 0 0
%>95 0 1 2 4 7 %>95 0 2 1 2 1
%>90 0 17 17 20 25 %>90 1 18 10 15 12
%>85 8 65 58 52 54 %>85 18 63 51 53 53
%>80 64 96 92 82 81 %>80 79 95 91 89 91
%>75 99 100 99 97 95 %>75 99 100 100 99 100
%>70 100 100 100 100 99 %>70 100 100 100 100 100
TAMPA_FL WASHINGTON_DC
TPA 0515 0516 0517 0518 0519 DCA 0515 0516 0517 0518 0519
MEAN 82 83 85 87 89 MEAN 73 79 77 73 73
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 2 6 %>95 0 0 0 0 1
%>90 0 1 3 21 36 %>90 0 1 0 0 3
%>85 17 24 48 71 80 %>85 0 9 4 3 8
%>80 77 87 96 97 98 %>80 1 39 25 14 21
%>75 99 100 100 100 100 %>75 25 79 66 38 40
%>70 100 100 100 100 100 %>70 84 97 93 68 63
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