Heat Index Forecast Tables
Issued by NWS
Issued by NWS
043
FMUS23 KWNH 201730
PRBEHI
DAYS 3--7 HEAT INDEX FORECAST TABLES
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
1729 UTC MON JUL 20 2026
MEAN HEAT INDEX (DEG F) AND MEAN HI PROB (%) FRCSTS
AT EASTERN US CITIES - DAYS 3 TO 7 FROM MON JUL 20 2026
AKRON-CANTON_OH ALBANY_NY
CAK 0723 0724 0725 0726 0727 ALB 0723 0724 0725 0726 0727
MEAN 64 67 72 76 77 MEAN 65 67 71 74 75
%>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 1 %>90 0 0 0 0 0
%>85 0 0 0 2 6 %>85 0 0 0 0 2
%>80 0 0 1 17 26 %>80 0 0 0 8 15
%>75 0 0 21 60 61 %>75 0 0 8 42 48
%>70 0 8 73 93 89 %>70 7 11 67 84 83
ASHEVILLE_NC ATLANTA_GA
AVL 0723 0724 0725 0726 0727 ATL 0723 0724 0725 0726 0727
MEAN 71 68 70 75 77 MEAN 86 83 84 86 88
%>100 0 0 0 0 0 %>100 0 0 0 1 1
%>95 0 0 0 0 0 %>95 2 2 3 5 8
%>90 0 0 0 0 0 %>90 17 11 16 22 34
%>85 0 0 0 3 5 %>85 56 35 43 56 72
%>80 4 1 4 15 26 %>80 90 68 74 85 94
%>75 22 8 19 48 68 %>75 99 90 93 97 99
%>70 61 37 52 83 93 %>70 100 98 99 100 100
BALTIMORE_MD BIRMINGHAM_AL
BWI 0723 0724 0725 0726 0727 BHM 0723 0724 0725 0726 0727
MEAN 72 73 75 79 84 MEAN 85 86 87 88 90
%>100 0 0 0 0 0 %>100 0 0 2 2 3
%>95 0 0 0 0 2 %>95 2 2 9 13 18
%>90 0 0 0 1 12 %>90 16 17 31 39 52
%>85 0 0 0 8 41 %>85 54 55 63 71 84
%>80 2 1 8 39 76 %>80 88 88 88 92 97
%>75 21 23 51 81 95 %>75 99 99 98 99 100
%>70 76 83 94 98 100 %>70 100 100 100 100 100
BOSTON_MA BUFFALO_NY
BOS 0723 0724 0725 0726 0727 BUF 0723 0724 0725 0726 0727
MEAN 72 70 72 74 78 MEAN 64 68 72 75 74
%>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 4 %>90 0 0 0 0 0
%>85 0 0 0 1 14 %>85 0 0 0 0 1
%>80 1 0 1 10 35 %>80 0 0 0 7 12
%>75 17 2 18 38 65 %>75 0 0 11 45 42
%>70 69 44 65 77 88 %>70 0 15 79 89 79
CHARLESTON_SC CHARLESTON_WV
CHS 0723 0724 0725 0726 0727 CRW 0723 0724 0725 0726 0727
MEAN 95 92 91 91 93 MEAN 68 72 76 80 81
%>100 16 11 12 10 13 %>100 0 0 0 0 0
%>95 49 31 31 28 36 %>95 0 0 0 0 1
%>90 83 61 57 54 67 %>90 0 0 0 2 6
%>85 97 85 80 78 89 %>85 0 0 3 15 25
%>80 100 96 94 93 98 %>80 0 2 18 47 61
%>75 100 99 99 98 100 %>75 2 21 55 83 89
%>70 100 100 100 100 100 %>70 29 68 88 97 98
CHARLOTTE_NC CHICAGO_IL
CLT 0723 0724 0725 0726 0727 ORD 0723 0724 0725 0726 0727
MEAN 77 75 77 82 86 MEAN 69 71 75 82 80
%>100 0 0 0 0 0 %>100 0 0 0 0 1
%>95 0 0 0 2 3 %>95 0 0 0 1 5
%>90 1 0 0 10 21 %>90 0 0 0 9 14
%>85 6 2 5 33 59 %>85 0 0 1 32 30
%>80 28 14 26 67 90 %>80 0 1 9 66 52
%>75 65 49 63 90 99 %>75 3 12 52 90 73
%>70 91 85 91 99 100 %>70 37 64 92 98 88
CINCINNATI_OH CLEVELAND_OH
LUK 0723 0724 0725 0726 0727 CLE 0723 0724 0725 0726 0727
MEAN 68 70 76 81 83 MEAN 66 68 74 79 78
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 3 %>95 0 0 0 0 0
%>90 0 0 0 3 13 %>90 0 0 0 1 2
%>85 0 0 2 20 38 %>85 0 0 0 10 10
%>80 0 0 17 58 69 %>80 0 0 3 39 34
%>75 1 8 57 90 90 %>75 0 1 37 77 68
%>70 21 54 91 99 98 %>70 5 26 88 96 91
COLUMBIA_SC COLUMBUS_OH
CAE 0723 0724 0725 0726 0727 TZR 0723 0724 0725 0726 0727
MEAN 87 83 83 87 90 MEAN 66 69 75 79 81
%>100 2 1 0 2 3 %>100 0 0 0 0 0
%>95 9 4 2 11 16 %>95 0 0 0 0 1
%>90 30 16 12 31 47 %>90 0 0 0 2 7
%>85 62 39 37 60 79 %>85 0 0 1 12 25
%>80 86 67 68 85 96 %>80 0 0 12 44 56
%>75 97 88 90 96 100 %>75 0 2 46 80 83
%>70 100 97 98 99 100 %>70 8 33 83 97 96
DAYTON_OH DETROIT_MI
MGY 0723 0724 0725 0726 0727 DET 0723 0724 0725 0726 0727
MEAN 66 69 75 80 82 MEAN 66 70 74 79 76
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 2 %>95 0 0 0 0 0
%>90 0 0 0 2 11 %>90 0 0 0 1 2
%>85 0 0 1 16 33 %>85 0 0 0 8 10
%>80 0 0 10 51 64 %>80 0 0 2 42 29
%>75 0 3 47 85 88 %>75 0 2 35 83 58
%>70 7 39 87 98 98 %>70 4 48 92 98 82
EVANSVILLE_IN GRAND_RAPIDS_MI
EVV 0723 0724 0725 0726 0727 GRR 0723 0724 0725 0726 0727
MEAN 70 72 78 84 87 MEAN 64 68 71 77 76
%>100 0 0 0 1 5 %>100 0 0 0 0 0
%>95 0 0 0 5 16 %>95 0 0 0 0 1
%>90 0 0 1 19 37 %>90 0 0 0 0 3
%>85 0 0 9 46 63 %>85 0 0 0 5 11
%>80 0 4 33 75 83 %>80 0 0 0 27 28
%>75 7 25 68 93 95 %>75 0 0 12 65 53
%>70 52 68 91 99 99 %>70 1 19 67 92 76
GREENSBORO_NC HUNTSVILLE_AL
GSO 0723 0724 0725 0726 0727 HSV 0723 0724 0725 0726 0727
MEAN 72 71 72 79 83 MEAN 80 82 85 87 89
%>100 0 0 0 0 0 %>100 0 0 1 2 2
%>95 0 0 0 0 0 %>95 0 1 7 10 13
%>90 0 0 0 2 7 %>90 3 7 22 32 40
%>85 1 0 0 14 36 %>85 18 28 49 65 74
%>80 6 1 5 45 78 %>80 52 62 77 89 94
%>75 28 15 27 79 97 %>75 84 89 93 98 99
%>70 66 56 65 96 100 %>70 98 98 99 100 100
INDIANAPOLIS_IN KNOXVILLE_TN
IND 0723 0724 0725 0726 0727 TYS 0723 0724 0725 0726 0727
MEAN 66 68 73 80 82 MEAN 77 79 80 84 85
%>100 0 0 0 0 1 %>100 0 0 0 1 0
%>95 0 0 0 0 4 %>95 0 0 1 4 4
%>90 0 0 0 3 14 %>90 2 2 5 16 18
%>85 0 0 0 17 35 %>85 9 12 21 41 50
%>80 0 0 5 50 63 %>80 32 40 51 72 82
%>75 0 2 34 84 85 %>75 66 76 81 92 97
%>70 5 29 80 97 96 %>70 90 95 96 99 100
LEXINGTON_KY LOUISVILLE_KY
LEX 0723 0724 0725 0726 0727 SDF 0723 0724 0725 0726 0727
MEAN 69 71 77 81 83 MEAN 70 72 78 83 86
%>100 0 0 0 0 0 %>100 0 0 0 0 1
%>95 0 0 0 0 2 %>95 0 0 0 1 7
%>90 0 0 0 2 10 %>90 0 0 1 9 24
%>85 0 0 4 18 36 %>85 0 0 9 35 54
%>80 0 1 25 57 71 %>80 1 2 34 73 82
%>75 2 16 64 91 93 %>75 11 23 70 94 96
%>70 35 65 92 99 99 %>70 55 69 93 100 99
MEMPHIS_TN MIAMI_FL
MEM 0723 0724 0725 0726 0727 MIA 0723 0724 0725 0726 0727
MEAN 80 81 87 91 93 MEAN 95 95 96 96 95
%>100 0 0 5 9 12 %>100 16 15 23 22 14
%>95 0 1 15 26 35 %>95 50 46 60 58 43
%>90 2 8 34 53 65 %>90 88 84 91 90 81
%>85 16 28 57 78 88 %>85 99 98 99 99 98
%>80 52 58 78 93 97 %>80 100 100 100 100 100
%>75 86 85 92 99 100 %>75 100 100 100 100 100
%>70 98 97 98 100 100 %>70 100 100 100 100 100
MILWAUKEE_WI MOBILE_AL
MKE 0723 0724 0725 0726 0727 MOB 0723 0724 0725 0726 0727
MEAN 68 71 74 80 76 MEAN 94 92 91 92 94
%>100 0 0 0 0 0 %>100 12 4 5 11 17
%>95 0 0 0 1 1 %>95 43 25 25 33 46
%>90 0 0 0 5 4 %>90 79 67 61 65 77
%>85 0 0 0 22 14 %>85 97 94 89 88 94
%>80 0 0 7 52 32 %>80 100 100 99 98 99
%>75 2 10 38 81 57 %>75 100 100 100 100 100
%>70 24 56 81 96 79 %>70 100 100 100 100 100
NASHVILLE_TN NEW_YORK_CITY_NY
BNA 0723 0724 0725 0726 0727 NYC 0723 0724 0725 0726 0727
MEAN 75 77 82 87 89 MEAN 72 72 74 77 80
%>100 0 0 0 1 3 %>100 0 0 0 0 0
%>95 0 0 1 7 14 %>95 0 0 0 0 0
%>90 0 0 9 27 42 %>90 0 0 0 0 3
%>85 2 4 31 61 75 %>85 0 0 0 2 17
%>80 15 25 64 88 94 %>80 2 0 3 20 54
%>75 54 64 89 98 99 %>75 21 13 39 66 87
%>70 89 92 98 100 100 %>70 73 73 90 95 99
NORFOLK_VA ORLANDO_FL
ORF 0723 0724 0725 0726 0727 ORL 0723 0724 0725 0726 0727
MEAN 77 77 78 79 86 MEAN 93 93 94 93 92
%>100 0 0 0 0 1 %>100 1 2 4 5 7
%>95 0 0 0 0 5 %>95 23 24 34 31 28
%>90 0 0 0 0 22 %>90 81 78 84 75 63
%>85 2 0 1 6 54 %>85 99 99 99 96 89
%>80 21 12 23 41 84 %>80 100 100 100 100 98
%>75 73 80 82 86 97 %>75 100 100 100 100 100
%>70 98 100 99 99 100 %>70 100 100 100 100 100
PHILADELPHIA_PA PITTSBURGH_PA
PHL 0723 0724 0725 0726 0727 PIT 0723 0724 0725 0726 0727
MEAN 71 72 74 77 81 MEAN 64 68 73 76 77
%>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 2 %>90 0 0 0 0 1
%>85 0 0 0 1 18 %>85 0 0 0 1 7
%>80 0 0 3 18 57 %>80 0 0 3 17 30
%>75 9 11 33 65 89 %>75 0 0 30 63 68
%>70 65 74 85 95 99 %>70 2 19 78 95 93
PORTLAND_ME PROVIDENCE_RI
PWM 0723 0724 0725 0726 0727 PVD 0723 0724 0725 0726 0727
MEAN 69 67 69 69 71 MEAN 71 69 71 73 76
%>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 1 %>85 0 0 0 0 4
%>80 0 0 0 1 6 %>80 1 0 1 5 20
%>75 2 0 3 8 24 %>75 12 3 15 29 55
%>70 32 14 33 43 57 %>70 60 42 62 73 87
RALEIGH-DURHAM_NC RICHMOND_VA
RDU 0723 0724 0725 0726 0727 RIC 0723 0724 0725 0726 0727
MEAN 75 74 76 81 86 MEAN 74 73 75 79 85
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 1 4 %>95 0 0 0 0 3
%>90 0 0 0 6 21 %>90 0 0 0 1 17
%>85 3 0 2 25 59 %>85 0 0 1 10 50
%>80 19 7 18 58 89 %>80 5 3 10 41 83
%>75 52 41 54 86 99 %>75 38 32 50 81 97
%>70 84 84 87 98 100 %>70 85 84 90 97 100
SAVANNAH_GA TALLAHASSEE_FL
SAV 0723 0724 0725 0726 0727 TLH 0723 0724 0725 0726 0727
MEAN 93 92 91 91 92 MEAN 92 92 91 90 93
%>100 8 8 9 9 11 %>100 4 5 4 3 9
%>95 35 30 27 26 33 %>95 24 25 23 17 33
%>90 75 64 56 53 65 %>90 66 63 59 47 68
%>85 96 90 83 79 89 %>85 93 91 89 79 92
%>80 100 98 96 94 98 %>80 100 99 99 95 99
%>75 100 100 99 99 100 %>75 100 100 100 99 100
%>70 100 100 100 100 100 %>70 100 100 100 100 100
TAMPA_FL WASHINGTON_DC
TPA 0723 0724 0725 0726 0727 DCA 0723 0724 0725 0726 0727
MEAN 94 93 94 94 93 MEAN 72 72 75 79 83
%>100 7 5 5 4 8 %>100 0 0 0 0 0
%>95 38 32 38 36 36 %>95 0 0 0 0 1
%>90 85 80 89 87 75 %>90 0 0 0 0 10
%>85 99 98 100 99 96 %>85 0 0 0 6 38
%>80 100 100 100 100 100 %>80 1 0 7 37 75
%>75 100 100 100 100 100 %>75 16 18 46 81 95
%>70 100 100 100 100 100 %>70 74 78 90 98 100
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