Heat Index Forecast Tables
Issued by NWS
Issued by NWS
954
FMUS23 KWNH 140746
PRBEHL
DAYS 3--7 HEAT INDEX FORECAST TABLES
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
0742 UTC FRI AUG 14 2026
MINIMUM HEAT INDEX (DEG F) AND MINIMUM HI PROB (%) FRCSTS
AT EASTERN US CITIES - DAYS 3 TO 7 FROM FRI AUG 14 2026
AKRON-CANTON_OH ALBANY_NY
CAK 0817 0818 0819 0820 0821 ALB 0817 0818 0819 0820 0821
MIN 69 59 60 65 60 MIN 63 58 58 63 58
%>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 4 0 0 3 1 %>75 0 0 0 1 1
%>70 39 2 3 17 7 %>70 6 2 0 9 5
ASHEVILLE_NC ATLANTA_GA
AVL 0817 0818 0819 0820 0821 ATL 0817 0818 0819 0820 0821
MIN 70 70 67 68 67 MIN 78 79 77 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 0
%>90 0 0 0 0 0 %>90 0 0 0 0 0
%>85 0 0 0 0 0 %>85 2 3 1 3 2
%>80 0 0 0 0 0 %>80 30 36 18 23 18
%>75 5 5 2 3 4 %>75 88 88 68 68 60
%>70 51 46 23 27 26 %>70 100 100 97 96 92
BALTIMORE_MD BIRMINGHAM_AL
BWI 0817 0818 0819 0820 0821 BHM 0817 0818 0819 0820 0821
MIN 75 71 70 73 71 MIN 79 78 76 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 0
%>90 0 0 0 0 0 %>90 0 1 0 0 0
%>85 0 0 0 1 2 %>85 3 6 3 4 4
%>80 9 0 1 10 10 %>80 32 32 19 24 20
%>75 49 14 11 39 28 %>75 86 73 58 63 55
%>70 89 64 49 75 55 %>70 100 95 90 92 87
BOSTON_MA BUFFALO_NY
BOS 0817 0818 0819 0820 0821 BUF 0817 0818 0819 0820 0821
MIN 66 64 64 68 65 MIN 66 59 63 63 58
%>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 1 %>80 0 0 0 0 0
%>75 1 1 0 3 4 %>75 1 0 0 3 1
%>70 15 10 3 30 19 %>70 12 1 3 13 4
CHARLESTON_SC CHARLESTON_WV
CHS 0817 0818 0819 0820 0821 CRW 0817 0818 0819 0820 0821
MIN 86 87 85 84 82 MIN 73 68 65 70 67
%>100 1 0 1 1 1 %>100 0 0 0 0 0
%>95 6 2 7 7 4 %>95 0 0 0 0 0
%>90 28 24 27 22 16 %>90 0 0 0 0 0
%>85 60 70 55 45 38 %>85 0 0 0 0 0
%>80 83 95 78 69 63 %>80 0 0 0 1 2
%>75 94 100 91 86 84 %>75 26 3 0 10 9
%>70 98 100 97 95 94 %>70 90 30 8 48 30
CHARLOTTE_NC CHICAGO_IL
CLT 0817 0818 0819 0820 0821 ORD 0817 0818 0819 0820 0821
MIN 78 77 74 75 74 MIN 68 64 68 65 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 1 0 0 0 0 %>90 0 0 0 0 0
%>85 9 4 1 2 2 %>85 0 0 0 0 0
%>80 33 24 9 16 14 %>80 0 0 0 1 0
%>75 68 66 44 52 46 %>75 2 1 6 6 3
%>70 91 94 85 86 80 %>70 31 10 34 23 13
CINCINNATI_OH CLEVELAND_OH
LUK 0817 0818 0819 0820 0821 CLE 0817 0818 0819 0820 0821
MIN 73 65 65 70 65 MIN 70 63 63 67 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 0 0 0 %>85 0 0 0 0 0
%>80 1 0 0 3 2 %>80 0 0 0 1 0
%>75 27 1 2 17 8 %>75 8 2 2 6 3
%>70 88 11 16 52 24 %>70 50 13 17 28 13
COLUMBIA_SC COLUMBUS_OH
CAE 0817 0818 0819 0820 0821 TZR 0817 0818 0819 0820 0821
MIN 81 81 78 77 77 MIN 71 62 62 68 62
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 1 0 0 0 0 %>95 0 0 0 0 0
%>90 8 3 3 2 2 %>90 0 0 0 0 0
%>85 27 21 13 10 11 %>85 0 0 0 0 0
%>80 57 64 36 34 32 %>80 0 0 0 1 1
%>75 82 90 66 66 63 %>75 12 0 1 9 4
%>70 95 98 89 89 87 %>70 66 4 7 34 15
DAYTON_OH DETROIT_MI
MGY 0817 0818 0819 0820 0821 DET 0817 0818 0819 0820 0821
MIN 72 63 63 69 63 MIN 68 63 67 65 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 0 0 0 2 1 %>80 0 0 0 1 0
%>75 16 0 1 13 5 %>75 2 0 2 6 2
%>70 77 4 10 42 17 %>70 30 4 23 22 9
EVANSVILLE_IN GRAND_RAPIDS_MI
EVV 0817 0818 0819 0820 0821 GRR 0817 0818 0819 0820 0821
MIN 76 69 69 73 68 MIN 62 56 63 59 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 2 0 1 3 1 %>85 0 0 0 0 0
%>80 18 0 5 14 6 %>80 0 0 0 0 0
%>75 62 6 20 39 18 %>75 0 0 1 2 0
%>70 94 42 46 71 41 %>70 2 0 9 7 3
GREENSBORO_NC HUNTSVILLE_AL
GSO 0817 0818 0819 0820 0821 HSV 0817 0818 0819 0820 0821
MIN 76 74 72 73 72 MIN 79 77 75 76 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 0 %>90 0 0 0 0 0
%>85 3 0 0 1 1 %>85 4 2 0 2 2
%>80 21 6 2 8 6 %>80 38 23 8 20 15
%>75 62 41 20 37 29 %>75 89 71 48 62 48
%>70 91 86 68 77 66 %>70 100 96 90 93 82
INDIANAPOLIS_IN KNOXVILLE_TN
IND 0817 0818 0819 0820 0821 TYS 0817 0818 0819 0820 0821
MIN 72 63 65 69 63 MIN 77 75 71 73 72
%>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 3 1 %>80 8 3 0 2 5
%>75 16 0 4 15 6 %>75 83 49 12 31 27
%>70 72 4 18 40 18 %>70 100 97 68 85 68
LEXINGTON_KY LOUISVILLE_KY
LEX 0817 0818 0819 0820 0821 SDF 0817 0818 0819 0820 0821
MIN 75 68 67 72 67 MIN 76 70 68 73 69
%>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 1 0 0 1 0 %>85 1 0 0 2 1
%>80 9 0 1 6 3 %>80 16 0 1 11 5
%>75 46 3 6 27 12 %>75 65 5 11 38 18
%>70 87 32 26 61 34 %>70 96 46 38 73 42
MEMPHIS_TN MIAMI_FL
MEM 0817 0818 0819 0820 0821 MIA 0817 0818 0819 0820 0821
MIN 84 78 77 79 76 MIN 86 86 87 87 87
%>100 0 0 0 0 0 %>100 0 1 1 1 1
%>95 0 0 0 0 0 %>95 3 7 10 9 8
%>90 4 1 1 3 2 %>90 26 29 33 34 36
%>85 44 9 9 15 10 %>85 57 60 62 64 65
%>80 91 35 32 44 29 %>80 81 86 86 86 89
%>75 100 71 65 77 55 %>75 95 97 96 96 97
%>70 100 93 90 95 80 %>70 99 99 99 99 100
MILWAUKEE_WI MOBILE_AL
MKE 0817 0818 0819 0820 0821 MOB 0817 0818 0819 0820 0821
MIN 66 63 67 62 61 MIN 80 81 79 79 79
%>100 0 0 0 0 0 %>100 0 1 1 0 0
%>95 0 0 0 0 0 %>95 3 4 3 2 2
%>90 0 0 0 0 0 %>90 10 13 10 8 8
%>85 0 0 0 0 0 %>85 27 31 25 23 22
%>80 0 0 0 0 0 %>80 52 54 48 47 45
%>75 0 0 1 1 1 %>75 76 76 71 72 70
%>70 10 8 23 10 6 %>70 91 90 88 89 88
NASHVILLE_TN NEW_YORK_CITY_NY
BNA 0817 0818 0819 0820 0821 NYC 0817 0818 0819 0820 0821
MIN 79 74 72 75 72 MIN 72 69 69 72 69
%>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 7 1 1 4 2 %>85 0 0 0 0 0
%>80 39 9 7 19 12 %>80 0 0 0 3 4
%>75 82 44 29 50 34 %>75 18 4 8 26 17
%>70 98 86 65 81 65 %>70 77 43 42 69 44
NORFOLK_VA ORLANDO_FL
ORF 0817 0818 0819 0820 0821 ORL 0817 0818 0819 0820 0821
MIN 80 80 76 77 78 MIN 82 82 83 82 80
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 1 0 0 0 0 %>95 0 1 1 2 1
%>90 5 3 0 1 2 %>90 4 6 9 10 5
%>85 22 17 2 7 10 %>85 23 31 36 31 21
%>80 53 48 21 32 34 %>80 64 69 72 62 54
%>75 81 80 62 69 67 %>75 91 92 93 86 83
%>70 95 96 91 92 90 %>70 99 99 99 97 97
PHILADELPHIA_PA PITTSBURGH_PA
PHL 0817 0818 0819 0820 0821 PIT 0817 0818 0819 0820 0821
MIN 73 69 68 72 69 MIN 70 60 61 66 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 1 %>85 0 0 0 0 0
%>80 1 0 0 4 6 %>80 0 0 0 0 0
%>75 22 6 2 25 20 %>75 5 0 0 3 3
%>70 80 42 26 66 45 %>70 56 2 2 22 11
PORTLAND_ME PROVIDENCE_RI
PWM 0817 0818 0819 0820 0821 PVD 0817 0818 0819 0820 0821
MIN 61 60 60 63 59 MIN 66 63 63 67 64
%>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 1
%>75 1 0 0 1 1 %>75 2 2 0 5 5
%>70 5 2 1 8 6 %>70 19 12 5 29 18
RALEIGH-DURHAM_NC RICHMOND_VA
RDU 0817 0818 0819 0820 0821 RIC 0817 0818 0819 0820 0821
MIN 78 77 74 76 74 MIN 76 73 70 74 72
%>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 3 0 0 0 0 %>90 1 0 0 0 0
%>85 13 3 1 5 4 %>85 7 0 0 2 3
%>80 39 23 11 22 17 %>80 25 3 1 12 12
%>75 71 65 44 55 46 %>75 56 29 14 40 32
%>70 92 93 82 85 78 %>70 83 79 52 74 61
SAVANNAH_GA TALLAHASSEE_FL
SAV 0817 0818 0819 0820 0821 TLH 0817 0818 0819 0820 0821
MIN 84 86 83 81 80 MIN 80 82 80 79 79
%>100 0 0 0 0 0 %>100 0 1 1 0 0
%>95 2 2 3 3 1 %>95 2 3 3 2 2
%>90 14 17 15 12 6 %>90 6 12 10 7 6
%>85 43 61 39 32 23 %>85 21 33 26 21 20
%>80 74 93 67 58 51 %>80 49 63 50 46 43
%>75 92 100 86 81 78 %>75 76 85 74 72 70
%>70 98 100 96 94 94 %>70 92 95 90 90 89
TAMPA_FL WASHINGTON_DC
TPA 0817 0818 0819 0820 0821 DCA 0817 0818 0819 0820 0821
MIN 85 87 88 87 85 MIN 75 72 69 74 71
%>100 1 1 3 3 2 %>100 0 0 0 0 0
%>95 6 7 15 13 8 %>95 0 0 0 0 0
%>90 25 33 40 35 26 %>90 0 0 0 0 0
%>85 54 65 67 62 53 %>85 1 0 0 1 3
%>80 78 85 85 81 75 %>80 12 0 0 10 11
%>75 90 94 94 92 88 %>75 55 14 8 39 30
%>70 97 98 98 97 95 %>70 92 73 45 77 57
URL IS WWW.WPC.NCEP.NOAA.GOV
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