Heat Index Forecast Tables
Issued by NWS
Issued by NWS
633
FMUS23 KWNH 110658
PRBEHI
DAYS 3--7 HEAT INDEX FORECAST TABLES
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
0656 UTC MON AUG 11 2025
MEAN HEAT INDEX (DEG F) AND MEAN HI PROB (%) FRCSTS
AT EASTERN US CITIES - DAYS 3 TO 7 FROM MON AUG 11 2025
AKRON-CANTON_OH ALBANY_NY
CAK 0814 0815 0816 0817 0818 ALB 0814 0815 0816 0817 0818
MEAN 75 75 78 80 79 MEAN 76 71 73 79 76
%>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 2 5 %>90 0 0 0 1 5
%>85 1 1 4 16 19 %>85 1 0 1 11 14
%>80 11 12 34 52 44 %>80 15 1 7 43 31
%>75 52 46 81 86 72 %>75 67 16 34 81 53
%>70 90 84 98 98 91 %>70 97 56 74 97 73
ASHEVILLE_NC ATLANTA_GA
AVL 0814 0815 0816 0817 0818 ATL 0814 0815 0816 0817 0818
MEAN 76 76 75 73 74 MEAN 85 86 85 83 82
%>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 9 16 10 4 5
%>85 1 1 1 1 2 %>85 49 62 47 28 29
%>80 16 13 10 8 10 %>80 91 95 88 72 71
%>75 67 57 47 38 40 %>75 100 100 99 96 95
%>70 96 92 86 77 76 %>70 100 100 100 100 100
BALTIMORE_MD BIRMINGHAM_AL
BWI 0814 0815 0816 0817 0818 BHM 0814 0815 0816 0817 0818
MEAN 85 82 81 82 83 MEAN 87 88 88 86 86
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 2 %>95 3 6 5 3 2
%>90 7 1 1 5 12 %>90 23 31 33 21 18
%>85 51 18 18 27 37 %>85 65 72 77 62 57
%>80 94 70 65 66 69 %>80 93 95 97 92 89
%>75 100 97 95 92 91 %>75 100 100 100 99 99
%>70 100 100 100 99 98 %>70 100 100 100 100 100
BOSTON_MA BUFFALO_NY
BOS 0814 0815 0816 0817 0818 BUF 0814 0815 0816 0817 0818
MEAN 80 72 71 78 74 MEAN 72 72 76 79 74
%>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 1 4 %>90 0 0 0 1 4
%>85 9 0 0 10 10 %>85 0 0 1 9 12
%>80 49 3 3 36 24 %>80 1 2 18 41 27
%>75 87 25 21 71 45 %>75 19 19 65 81 48
%>70 98 68 60 93 67 %>70 70 65 95 98 69
CHARLESTON_SC CHARLESTON_WV
CHS 0814 0815 0816 0817 0818 CRW 0814 0815 0816 0817 0818
MEAN 93 92 89 87 87 MEAN 82 83 84 84 84
%>100 3 5 1 0 0 %>100 0 0 0 0 0
%>95 27 27 9 3 2 %>95 1 1 1 0 1
%>90 75 67 40 24 22 %>90 6 7 10 7 10
%>85 98 93 79 65 71 %>85 29 32 40 43 41
%>80 100 99 97 93 97 %>80 69 71 80 88 80
%>75 100 100 100 99 100 %>75 94 94 97 99 97
%>70 100 100 100 100 100 %>70 100 100 100 100 100
CHARLOTTE_NC CHICAGO_IL
CLT 0814 0815 0816 0817 0818 ORD 0814 0815 0816 0817 0818
MEAN 86 85 82 80 82 MEAN 75 81 85 83 79
%>100 0 0 0 0 0 %>100 0 0 0 1 1
%>95 0 0 0 1 1 %>95 0 0 3 4 4
%>90 11 11 3 4 6 %>90 0 2 18 16 12
%>85 59 55 23 19 27 %>85 0 16 54 39 26
%>80 95 93 67 50 62 %>80 8 56 87 67 47
%>75 100 100 95 80 89 %>75 50 90 98 87 69
%>70 100 100 100 95 98 %>70 93 99 100 97 85
CINCINNATI_OH CLEVELAND_OH
LUK 0814 0815 0816 0817 0818 CLE 0814 0815 0816 0817 0818
MEAN 81 82 85 86 84 MEAN 75 75 79 81 79
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 1 1 1 3 %>95 0 0 0 0 1
%>90 3 6 11 13 16 %>90 0 0 1 4 6
%>85 21 30 47 57 46 %>85 0 0 9 22 20
%>80 63 68 87 93 79 %>80 5 8 45 57 44
%>75 92 93 99 100 96 %>75 45 47 86 87 71
%>70 99 99 100 100 100 %>70 91 89 99 98 90
COLUMBIA_SC COLUMBUS_OH
CAE 0814 0815 0816 0817 0818 TZR 0814 0815 0816 0817 0818
MEAN 89 89 85 83 84 MEAN 78 78 81 83 81
%>100 0 1 0 0 0 %>100 0 0 0 0 0
%>95 7 8 1 1 1 %>95 0 0 0 0 1
%>90 40 38 12 8 9 %>90 0 1 2 5 8
%>85 84 80 48 34 43 %>85 5 8 20 29 27
%>80 99 98 86 72 82 %>80 30 34 61 72 58
%>75 100 100 99 94 98 %>75 74 73 92 96 85
%>70 100 100 100 99 100 %>70 96 95 99 100 97
DAYTON_OH DETROIT_MI
MGY 0814 0815 0816 0817 0818 DET 0814 0815 0816 0817 0818
MEAN 80 81 84 85 83 MEAN 74 75 81 82 78
%>100 0 0 0 0 0 %>100 0 0 0 0 1
%>95 0 0 0 1 2 %>95 0 0 0 3 3
%>90 1 3 7 10 12 %>90 0 0 2 12 9
%>85 12 18 38 50 38 %>85 0 0 20 32 22
%>80 47 54 81 90 71 %>80 2 9 62 61 40
%>75 84 87 98 99 93 %>75 36 50 93 85 62
%>70 98 98 100 100 99 %>70 90 91 100 96 80
EVANSVILLE_IN GRAND_RAPIDS_MI
EVV 0814 0815 0816 0817 0818 GRR 0814 0815 0816 0817 0818
MEAN 84 86 88 88 88 MEAN 71 76 82 81 76
%>100 0 0 0 0 2 %>100 0 0 0 0 0
%>95 0 2 3 6 12 %>95 0 0 0 1 2
%>90 8 18 27 33 37 %>90 0 0 5 7 6
%>85 42 59 74 75 68 %>85 0 2 28 27 16
%>80 85 91 97 96 90 %>80 1 17 68 59 33
%>75 99 99 100 100 98 %>75 14 60 94 86 55
%>70 100 100 100 100 100 %>70 60 93 100 97 75
GREENSBORO_NC HUNTSVILLE_AL
GSO 0814 0815 0816 0817 0818 HSV 0814 0815 0816 0817 0818
MEAN 85 83 79 78 79 MEAN 86 87 87 86 86
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 1 %>95 2 2 2 1 2
%>90 3 2 1 3 5 %>90 19 22 22 15 18
%>85 44 27 11 13 19 %>85 61 69 72 64 62
%>80 94 80 45 36 47 %>80 93 96 97 96 94
%>75 100 99 83 66 76 %>75 100 100 100 100 100
%>70 100 100 98 88 93 %>70 100 100 100 100 100
INDIANAPOLIS_IN KNOXVILLE_TN
IND 0814 0815 0816 0817 0818 TYS 0814 0815 0816 0817 0818
MEAN 78 81 84 85 83 MEAN 84 85 85 83 83
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 1 2 %>95 1 2 1 0 0
%>90 1 3 7 10 12 %>90 12 15 9 4 5
%>85 7 19 42 49 36 %>85 43 50 45 34 35
%>80 33 56 85 89 68 %>80 81 85 86 82 80
%>75 74 88 99 99 90 %>75 97 98 99 99 98
%>70 96 99 100 100 98 %>70 100 100 100 100 100
LEXINGTON_KY LOUISVILLE_KY
LEX 0814 0815 0816 0817 0818 SDF 0814 0815 0816 0817 0818
MEAN 83 83 84 85 84 MEAN 84 86 87 87 87
%>100 0 0 0 0 0 %>100 0 0 0 0 1
%>95 0 0 0 0 1 %>95 1 3 2 2 8
%>90 2 4 6 6 12 %>90 11 19 22 23 30
%>85 25 33 43 45 45 %>85 45 56 67 70 65
%>80 78 79 89 91 82 %>80 84 89 96 97 91
%>75 99 98 100 100 97 %>75 98 99 100 100 99
%>70 100 100 100 100 100 %>70 100 100 100 100 100
MEMPHIS_TN MIAMI_FL
MEM 0814 0815 0816 0817 0818 MIA 0814 0815 0816 0817 0818
MEAN 89 91 89 90 90 MEAN 95 96 95 95 95
%>100 1 3 1 1 4 %>100 14 17 14 12 13
%>95 10 18 11 13 18 %>95 46 52 48 47 48
%>90 42 55 45 47 47 %>90 87 90 90 89 87
%>85 81 88 84 84 79 %>85 99 99 99 99 99
%>80 97 99 98 98 95 %>80 100 100 100 100 100
%>75 100 100 100 100 99 %>75 100 100 100 100 100
%>70 100 100 100 100 100 %>70 100 100 100 100 100
MILWAUKEE_WI MOBILE_AL
MKE 0814 0815 0816 0817 0818 MOB 0814 0815 0816 0817 0818
MEAN 72 77 82 78 75 MEAN 91 93 94 93 91
%>100 0 0 0 0 0 %>100 4 8 11 6 2
%>95 0 0 0 1 1 %>95 21 33 40 34 19
%>90 0 0 5 4 3 %>90 58 70 76 75 62
%>85 0 4 25 17 10 %>85 88 93 95 96 93
%>80 3 27 63 41 26 %>80 99 99 100 100 100
%>75 22 69 90 70 50 %>75 100 100 100 100 100
%>70 70 94 99 89 74 %>70 100 100 100 100 100
NASHVILLE_TN NEW_YORK_CITY_NY
BNA 0814 0815 0816 0817 0818 NYC 0814 0815 0816 0817 0818
MEAN 87 88 87 88 88 MEAN 83 79 78 82 82
%>100 0 0 0 0 1 %>100 0 0 0 0 0
%>95 4 4 2 3 8 %>95 0 0 0 0 2
%>90 25 29 23 28 36 %>90 2 0 0 4 11
%>85 68 76 76 77 75 %>85 27 1 4 24 34
%>80 95 98 98 98 96 %>80 79 32 31 63 66
%>75 100 100 100 100 100 %>75 99 90 79 92 89
%>70 100 100 100 100 100 %>70 100 100 98 99 98
NORFOLK_VA ORLANDO_FL
ORF 0814 0815 0816 0817 0818 ORL 0814 0815 0816 0817 0818
MEAN 86 83 80 80 81 MEAN 94 95 94 93 93
%>100 0 0 0 0 0 %>100 9 11 5 3 6
%>95 2 0 0 0 0 %>95 42 49 35 27 33
%>90 17 1 0 1 2 %>90 83 89 82 76 75
%>85 60 21 7 10 19 %>85 98 99 99 98 96
%>80 93 80 52 49 62 %>80 100 100 100 100 100
%>75 100 99 93 88 93 %>75 100 100 100 100 100
%>70 100 100 100 99 99 %>70 100 100 100 100 100
PHILADELPHIA_PA PITTSBURGH_PA
PHL 0814 0815 0816 0817 0818 PIT 0814 0815 0816 0817 0818
MEAN 84 80 80 81 83 MEAN 77 76 79 81 80
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 3 %>95 0 0 0 0 1
%>90 2 0 0 4 13 %>90 0 0 0 1 5
%>85 35 8 9 24 35 %>85 1 2 7 15 21
%>80 91 55 47 61 65 %>80 16 17 41 59 52
%>75 100 95 88 90 88 %>75 69 57 85 93 81
%>70 100 100 99 99 97 %>70 98 90 99 100 96
PORTLAND_ME PROVIDENCE_RI
PWM 0814 0815 0816 0817 0818 PVD 0814 0815 0816 0817 0818
MEAN 76 69 68 74 70 MEAN 80 74 72 77 76
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 1
%>90 0 0 0 0 1 %>90 0 0 0 1 3
%>85 1 0 0 1 3 %>85 7 1 0 6 12
%>80 16 1 0 10 10 %>80 51 9 4 28 29
%>75 66 8 4 38 25 %>75 94 43 25 65 54
%>70 96 39 28 76 48 %>70 100 83 66 91 77
RALEIGH-DURHAM_NC RICHMOND_VA
RDU 0814 0815 0816 0817 0818 RIC 0814 0815 0816 0817 0818
MEAN 88 86 82 80 82 MEAN 87 84 81 80 82
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 3 1 0 1 1 %>95 2 0 0 1 3
%>90 28 14 3 5 8 %>90 23 6 3 6 12
%>85 76 60 23 21 29 %>85 75 38 21 23 33
%>80 98 94 64 53 63 %>80 98 82 58 52 63
%>75 100 100 93 83 88 %>75 100 98 89 80 86
%>70 100 100 99 96 98 %>70 100 100 99 95 97
SAVANNAH_GA TALLAHASSEE_FL
SAV 0814 0815 0816 0817 0818 TLH 0814 0815 0816 0817 0818
MEAN 93 93 90 88 88 MEAN 93 94 94 92 92
%>100 6 7 3 0 0 %>100 7 16 12 8 6
%>95 34 33 17 6 5 %>95 32 46 42 31 27
%>90 77 75 51 33 32 %>90 72 79 77 68 63
%>85 97 96 84 76 76 %>85 95 96 96 92 90
%>80 100 100 98 97 97 %>80 100 100 100 99 99
%>75 100 100 100 100 100 %>75 100 100 100 100 100
%>70 100 100 100 100 100 %>70 100 100 100 100 100
TAMPA_FL WASHINGTON_DC
TPA 0814 0815 0816 0817 0818 DCA 0814 0815 0816 0817 0818
MEAN 96 97 96 95 95 MEAN 86 83 82 82 84
%>100 23 28 24 18 17 %>100 0 0 0 0 1
%>95 57 64 60 51 49 %>95 0 0 0 1 4
%>90 87 90 90 83 82 %>90 11 2 3 8 17
%>85 98 99 99 97 97 %>85 60 27 22 31 42
%>80 100 100 100 100 100 %>80 96 76 64 65 70
%>75 100 100 100 100 100 %>75 100 98 93 89 90
%>70 100 100 100 100 100 %>70 100 100 100 98 98
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