Heat Index Forecast Tables
Issued by NWS
Issued by NWS
537
FMUS23 KWNH 181730
PRBEHI
DAYS 3--7 HEAT INDEX FORECAST TABLES
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
1727 UTC FRI SEP 18 2026
MEAN HEAT INDEX (DEG F) AND MEAN HI PROB (%) FRCSTS
AT EASTERN US CITIES - DAYS 3 TO 7 FROM FRI SEP 18 2026
AKRON-CANTON_OH ALBANY_NY
CAK 0921 0922 0923 0924 0925 ALB 0921 0922 0923 0924 0925
MEAN 62 61 60 60 61 MEAN 56 52 52 53 56
%>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 0 0 0
%>80 0 0 0 0 0 %>80 0 0 0 0 0
%>75 0 0 0 0 0 %>75 0 0 0 0 0
%>70 2 3 2 1 4 %>70 0 0 0 0 1
ASHEVILLE_NC ATLANTA_GA
AVL 0921 0922 0923 0924 0925 ATL 0921 0922 0923 0924 0925
MEAN 74 71 66 65 63 MEAN 85 84 80 76 74
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 1 1 0 0
%>90 0 0 0 0 0 %>90 5 8 6 1 0
%>85 0 0 0 0 0 %>85 44 38 22 6 2
%>80 5 3 0 0 0 %>80 92 78 50 25 14
%>75 41 16 4 2 1 %>75 100 97 78 57 44
%>70 89 54 19 15 9 %>70 100 100 94 85 78
BALTIMORE_MD BIRMINGHAM_AL
BWI 0921 0922 0923 0924 0925 BHM 0921 0922 0923 0924 0925
MEAN 72 65 61 63 65 MEAN 87 86 82 77 74
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 2 3 0 0 0
%>90 0 0 0 0 0 %>90 24 21 4 0 0
%>85 1 0 0 0 0 %>85 72 62 26 4 1
%>80 7 0 0 0 0 %>80 97 93 65 23 11
%>75 28 2 0 1 2 %>75 100 99 93 62 43
%>70 64 16 1 8 14 %>70 100 100 99 91 80
BOSTON_MA BUFFALO_NY
BOS 0921 0922 0923 0924 0925 BUF 0921 0922 0923 0924 0925
MEAN 59 55 56 56 58 MEAN 55 54 55 57 59
%>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 0 0 0
%>80 0 0 0 0 0 %>80 0 0 0 0 0
%>75 0 0 0 0 0 %>75 0 0 0 0 0
%>70 0 0 0 0 0 %>70 0 0 0 0 1
CHARLESTON_SC CHARLESTON_WV
CHS 0921 0922 0923 0924 0925 CRW 0921 0922 0923 0924 0925
MEAN 86 86 83 81 78 MEAN 76 72 68 65 64
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 1 3 3 1 0 %>95 0 0 0 0 0
%>90 15 19 14 6 2 %>90 1 0 0 0 0
%>85 62 54 39 23 11 %>85 5 1 0 0 0
%>80 95 86 70 53 37 %>80 23 7 1 0 0
%>75 100 98 91 82 71 %>75 58 28 9 2 2
%>70 100 100 98 96 93 %>70 87 63 35 17 13
CHARLOTTE_NC CHICAGO_IL
CLT 0921 0922 0923 0924 0925 ORD 0921 0922 0923 0924 0925
MEAN 84 80 71 71 70 MEAN 58 57 58 59 62
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 1 0 0 0 %>95 0 0 0 0 0
%>90 3 6 0 0 0 %>90 0 0 0 0 0
%>85 36 20 1 1 0 %>85 0 0 0 0 0
%>80 88 47 7 7 3 %>80 0 0 0 0 0
%>75 100 76 26 25 16 %>75 0 0 0 0 0
%>70 100 93 57 57 48 %>70 0 0 0 0 2
CINCINNATI_OH CLEVELAND_OH
LUK 0921 0922 0923 0924 0925 CLE 0921 0922 0923 0924 0925
MEAN 73 68 66 64 64 MEAN 61 60 61 61 62
%>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 3 0 0 0 0 %>85 0 0 0 0 0
%>80 13 1 0 0 0 %>80 0 0 0 0 0
%>75 36 9 3 1 1 %>75 0 0 0 0 0
%>70 66 34 19 11 12 %>70 0 1 3 2 5
COLUMBIA_SC COLUMBUS_OH
CAE 0921 0922 0923 0924 0925 TZR 0921 0922 0923 0924 0925
MEAN 86 84 78 77 75 MEAN 67 65 64 62 63
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 3 0 0 0 %>95 0 0 0 0 0
%>90 10 15 3 2 0 %>90 0 0 0 0 0
%>85 59 44 13 10 3 %>85 0 0 0 0 0
%>80 96 78 37 31 17 %>80 1 0 0 0 0
%>75 100 95 69 62 49 %>75 7 3 2 0 1
%>70 100 99 90 86 81 %>70 28 17 13 5 9
DAYTON_OH DETROIT_MI
MGY 0921 0922 0923 0924 0925 DET 0921 0922 0923 0924 0925
MEAN 69 65 64 63 63 MEAN 57 56 58 60 62
%>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 0 0 0
%>80 3 0 0 0 0 %>80 0 0 0 0 0
%>75 14 3 2 0 1 %>75 0 0 0 0 0
%>70 42 18 12 6 8 %>70 0 0 0 1 4
EVANSVILLE_IN GRAND_RAPIDS_MI
EVV 0921 0922 0923 0924 0925 GRR 0921 0922 0923 0924 0925
MEAN 82 72 67 67 68 MEAN 54 52 54 57 59
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 2 0 0 0 0 %>95 0 0 0 0 0
%>90 10 0 0 0 0 %>90 0 0 0 0 0
%>85 32 1 0 0 0 %>85 0 0 0 0 0
%>80 64 8 1 1 1 %>80 0 0 0 0 0
%>75 88 29 8 7 10 %>75 0 0 0 0 0
%>70 98 62 31 29 38 %>70 0 0 0 0 1
GREENSBORO_NC HUNTSVILLE_AL
GSO 0921 0922 0923 0924 0925 HSV 0921 0922 0923 0924 0925
MEAN 81 75 67 68 67 MEAN 87 85 79 74 73
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 2 2 0 0 0
%>90 1 1 0 0 0 %>90 22 15 2 0 0
%>85 14 6 0 0 0 %>85 69 53 12 1 1
%>80 61 22 1 1 1 %>80 96 88 42 11 6
%>75 95 51 9 9 6 %>75 100 99 78 42 30
%>70 100 80 31 33 28 %>70 100 100 96 79 70
INDIANAPOLIS_IN KNOXVILLE_TN
IND 0921 0922 0923 0924 0925 TYS 0921 0922 0923 0924 0925
MEAN 69 64 62 63 64 MEAN 83 81 76 72 70
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 1 0 0 0
%>90 0 0 0 0 0 %>90 6 8 1 0 0
%>85 0 0 0 0 0 %>85 33 26 5 1 0
%>80 3 0 0 0 0 %>80 76 57 23 9 2
%>75 14 1 0 1 2 %>75 97 84 56 31 15
%>70 42 10 5 7 12 %>70 100 97 86 66 46
LEXINGTON_KY LOUISVILLE_KY
LEX 0921 0922 0923 0924 0925 SDF 0921 0922 0923 0924 0925
MEAN 79 71 67 65 65 MEAN 81 72 68 66 67
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 1 0 0 0 0
%>90 3 0 0 0 0 %>90 8 0 0 0 0
%>85 16 1 0 0 0 %>85 25 1 0 0 0
%>80 45 8 1 0 0 %>80 54 9 1 0 0
%>75 76 28 7 3 2 %>75 80 29 9 5 5
%>70 94 60 30 16 15 %>70 95 60 33 23 26
MEMPHIS_TN MIAMI_FL
MEM 0921 0922 0923 0924 0925 MIA 0921 0922 0923 0924 0925
MEAN 90 84 77 75 75 MEAN 89 90 90 90 90
%>100 1 0 0 0 0 %>100 2 5 5 5 3
%>95 11 2 0 0 0 %>95 11 19 21 21 16
%>90 51 13 1 0 0 %>90 39 51 52 51 49
%>85 90 42 9 4 3 %>85 76 83 83 82 84
%>80 100 77 30 19 16 %>80 96 97 97 97 98
%>75 100 95 62 49 48 %>75 100 100 100 100 100
%>70 100 100 88 80 82 %>70 100 100 100 100 100
MILWAUKEE_WI MOBILE_AL
MKE 0921 0922 0923 0924 0925 MOB 0921 0922 0923 0924 0925
MEAN 57 55 57 58 60 MEAN 90 90 89 84 80
%>100 0 0 0 0 0 %>100 1 2 1 0 0
%>95 0 0 0 0 0 %>95 12 15 9 1 0
%>90 0 0 0 0 0 %>90 48 50 40 8 2
%>85 0 0 0 0 0 %>85 86 85 80 41 16
%>80 0 0 0 0 0 %>80 99 98 98 83 53
%>75 0 0 0 0 0 %>75 100 100 100 98 87
%>70 0 0 0 0 1 %>70 100 100 100 100 99
NASHVILLE_TN NEW_YORK_CITY_NY
BNA 0921 0922 0923 0924 0925 NYC 0921 0922 0923 0924 0925
MEAN 88 83 75 72 71 MEAN 65 59 59 60 62
%>100 1 0 0 0 0 %>100 0 0 0 0 0
%>95 8 2 0 0 0 %>95 0 0 0 0 0
%>90 34 12 0 0 0 %>90 0 0 0 0 0
%>85 74 35 4 1 1 %>85 0 0 0 0 0
%>80 96 67 19 7 6 %>80 0 0 0 0 0
%>75 100 89 51 29 26 %>75 0 0 0 0 0
%>70 100 98 82 64 61 %>70 8 0 0 0 4
NORFOLK_VA ORLANDO_FL
ORF 0921 0922 0923 0924 0925 ORL 0921 0922 0923 0924 0925
MEAN 81 78 73 73 71 MEAN 86 88 88 88 87
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 1 4 6 6 3
%>90 2 0 0 0 0 %>90 16 28 34 30 24
%>85 17 4 0 0 0 %>85 64 74 76 71 67
%>80 61 29 2 6 3 %>80 96 97 97 95 94
%>75 94 78 31 35 22 %>75 100 100 100 100 100
%>70 100 98 85 79 62 %>70 100 100 100 100 100
PHILADELPHIA_PA PITTSBURGH_PA
PHL 0921 0922 0923 0924 0925 PIT 0921 0922 0923 0924 0925
MEAN 68 62 60 61 63 MEAN 64 62 60 60 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 0 0 0 0 %>85 0 0 0 0 0
%>80 1 0 0 0 0 %>80 0 0 0 0 0
%>75 8 0 0 0 1 %>75 2 1 0 0 1
%>70 36 3 0 3 10 %>70 12 6 1 2 5
PORTLAND_ME PROVIDENCE_RI
PWM 0921 0922 0923 0924 0925 PVD 0921 0922 0923 0924 0925
MEAN 56 52 52 52 55 MEAN 60 56 56 57 59
%>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 0 0 0
%>80 0 0 0 0 0 %>80 0 0 0 0 0
%>75 0 0 0 0 0 %>75 0 0 0 0 0
%>70 0 0 0 0 0 %>70 0 0 0 0 1
RALEIGH-DURHAM_NC RICHMOND_VA
RDU 0921 0922 0923 0924 0925 RIC 0921 0922 0923 0924 0925
MEAN 83 78 70 70 69 MEAN 79 73 66 68 67
%>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 4 2 0 0 0 %>90 4 0 0 0 0
%>85 32 13 0 0 0 %>85 18 1 0 0 0
%>80 81 39 3 4 3 %>80 47 7 0 1 1
%>75 99 72 18 21 15 %>75 78 33 3 8 7
%>70 100 93 49 53 45 %>70 95 71 18 32 29
SAVANNAH_GA TALLAHASSEE_FL
SAV 0921 0922 0923 0924 0925 TLH 0921 0922 0923 0924 0925
MEAN 86 86 84 82 79 MEAN 86 87 87 84 82
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 1 4 4 1 0 %>95 1 2 2 2 0
%>90 14 21 17 8 3 %>90 17 20 21 13 4
%>85 57 57 46 29 16 %>85 64 66 65 46 24
%>80 93 88 78 61 45 %>80 95 95 94 82 63
%>75 100 98 95 87 78 %>75 100 100 100 97 91
%>70 100 100 99 97 95 %>70 100 100 100 100 99
TAMPA_FL WASHINGTON_DC
TPA 0921 0922 0923 0924 0925 DCA 0921 0922 0923 0924 0925
MEAN 87 88 89 89 88 MEAN 73 67 61 63 65
%>100 0 1 2 1 0 %>100 0 0 0 0 0
%>95 3 7 12 10 6 %>95 0 0 0 0 0
%>90 23 32 41 40 30 %>90 0 0 0 0 0
%>85 64 71 76 78 71 %>85 2 0 0 0 0
%>80 93 94 95 96 95 %>80 13 0 0 0 0
%>75 99 99 100 100 100 %>75 38 5 0 1 2
%>70 100 100 100 100 100 %>70 71 26 2 9 15
URL IS WWW.WPC.NCEP.NOAA.GOV
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