Heat Index Forecast Tables
Issued by NWS
Issued by NWS
537
FMUS23 KWNH 111818
PRBEHL
DAYS 3--7 HEAT INDEX FORECAST TABLES
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
1816 UTC TUE AUG 11 2026
MINIMUM HEAT INDEX (DEG F) AND MINIMUM HI PROB (%) FRCSTS
AT EASTERN US CITIES - DAYS 3 TO 7 FROM TUE AUG 11 2026
AKRON-CANTON_OH ALBANY_NY
CAK 0814 0815 0816 0817 0818 ALB 0814 0815 0816 0817 0818
MIN 64 56 63 68 60 MIN 59 53 53 61 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 1 1 0 %>80 0 0 0 0 0
%>75 1 0 4 8 1 %>75 0 0 0 0 0
%>70 11 2 16 34 5 %>70 1 0 0 4 2
ASHEVILLE_NC ATLANTA_GA
AVL 0814 0815 0816 0817 0818 ATL 0814 0815 0816 0817 0818
MIN 69 70 69 69 69 MIN 78 78 77 77 78
%>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 6 4 4 4
%>80 0 0 0 0 0 %>80 27 35 27 28 32
%>75 3 8 5 6 7 %>75 79 77 71 71 80
%>70 42 52 39 42 38 %>70 98 97 95 95 98
BALTIMORE_MD BIRMINGHAM_AL
BWI 0814 0815 0816 0817 0818 BHM 0814 0815 0816 0817 0818
MIN 73 65 67 73 70 MIN 78 77 77 78 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 0 %>90 0 1 1 1 0
%>85 0 0 0 2 0 %>85 5 6 8 7 5
%>80 1 0 1 11 1 %>80 29 29 31 31 29
%>75 26 1 7 37 13 %>75 72 69 68 69 70
%>70 78 16 32 71 52 %>70 96 94 92 93 95
BOSTON_MA BUFFALO_NY
BOS 0814 0815 0816 0817 0818 BUF 0814 0815 0816 0817 0818
MIN 65 59 59 65 64 MIN 59 54 57 63 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 1 0 0 1 1 %>75 1 0 0 2 0
%>70 13 1 1 13 8 %>70 4 1 2 10 2
CHARLESTON_SC CHARLESTON_WV
CHS 0814 0815 0816 0817 0818 CRW 0814 0815 0816 0817 0818
MIN 86 86 81 82 84 MIN 71 67 70 73 68
%>100 1 1 1 1 1 %>100 0 0 0 0 0
%>95 6 7 3 5 5 %>95 0 0 0 0 0
%>90 27 29 12 15 21 %>90 0 0 0 0 0
%>85 59 62 30 35 48 %>85 0 0 0 0 0
%>80 83 85 54 59 74 %>80 0 0 2 2 0
%>75 95 96 77 80 90 %>75 8 5 17 28 5
%>70 99 99 91 93 97 %>70 70 27 53 83 31
CHARLOTTE_NC CHICAGO_IL
CLT 0814 0815 0816 0817 0818 ORD 0814 0815 0816 0817 0818
MIN 77 77 75 76 76 MIN 68 67 72 68 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 1 1 0 1 1 %>90 0 0 0 0 0
%>85 8 6 3 7 5 %>85 0 0 2 0 0
%>80 30 27 15 26 23 %>80 0 0 10 0 0
%>75 65 63 46 57 56 %>75 3 5 32 5 2
%>70 90 90 80 83 85 %>70 31 28 64 30 14
CINCINNATI_OH CLEVELAND_OH
LUK 0814 0815 0816 0817 0818 CLE 0814 0815 0816 0817 0818
MIN 71 67 71 72 66 MIN 67 60 66 69 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 1 0 0 %>85 0 0 0 0 0
%>80 1 1 8 6 0 %>80 0 0 2 1 0
%>75 12 7 27 30 4 %>75 5 1 10 12 3
%>70 59 29 59 69 23 %>70 31 7 30 45 17
COLUMBIA_SC COLUMBUS_OH
CAE 0814 0815 0816 0817 0818 TZR 0814 0815 0816 0817 0818
MIN 80 79 77 78 78 MIN 68 62 68 71 63
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 1 1 0 1 1 %>95 0 0 0 0 0
%>90 6 6 2 5 4 %>90 0 0 0 0 0
%>85 23 21 11 17 16 %>85 0 0 0 0 0
%>80 52 47 31 38 40 %>80 0 0 3 2 0
%>75 79 74 60 64 69 %>75 3 1 13 16 1
%>70 93 92 84 85 89 %>70 34 8 37 56 10
DAYTON_OH DETROIT_MI
MGY 0814 0815 0816 0817 0818 DET 0814 0815 0816 0817 0818
MIN 70 65 70 71 64 MIN 65 61 67 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 1 0 0 %>85 0 0 0 0 0
%>80 0 0 5 2 0 %>80 0 0 1 0 0
%>75 5 3 21 19 2 %>75 1 1 9 5 1
%>70 45 17 51 60 13 %>70 11 6 32 27 8
EVANSVILLE_IN GRAND_RAPIDS_MI
EVV 0814 0815 0816 0817 0818 GRR 0814 0815 0816 0817 0818
MIN 77 75 77 76 71 MIN 60 58 66 62 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 1 0 0 %>90 0 0 0 0 0
%>85 4 4 7 4 1 %>85 0 0 0 0 0
%>80 27 19 30 23 6 %>80 0 0 1 0 0
%>75 68 52 65 62 25 %>75 0 0 7 1 0
%>70 94 83 90 91 57 %>70 2 2 25 8 1
GREENSBORO_NC HUNTSVILLE_AL
GSO 0814 0815 0816 0817 0818 HSV 0814 0815 0816 0817 0818
MIN 75 73 72 75 73 MIN 78 78 78 78 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 0 %>90 0 0 0 0 0
%>85 2 0 0 3 1 %>85 1 2 3 3 4
%>80 14 6 5 16 7 %>80 27 25 27 27 26
%>75 53 33 25 47 35 %>75 84 75 77 76 70
%>70 89 76 62 79 75 %>70 99 98 98 98 95
INDIANAPOLIS_IN KNOXVILLE_TN
IND 0814 0815 0816 0817 0818 TYS 0814 0815 0816 0817 0818
MIN 70 68 72 71 64 MIN 76 76 76 76 74
%>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 0 %>85 0 0 0 0 0
%>80 0 1 9 2 0 %>80 3 2 4 9 4
%>75 8 9 31 17 2 %>75 71 68 62 70 42
%>70 51 33 65 56 13 %>70 100 100 99 99 91
LEXINGTON_KY LOUISVILLE_KY
LEX 0814 0815 0816 0817 0818 SDF 0814 0815 0816 0817 0818
MIN 73 71 73 75 69 MIN 76 73 76 77 71
%>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 2 1 0 %>85 1 0 3 2 0
%>80 8 3 12 12 2 %>80 15 6 20 21 3
%>75 35 19 37 46 12 %>75 57 36 56 65 19
%>70 74 56 69 83 40 %>70 91 79 87 94 56
MEMPHIS_TN MIAMI_FL
MEM 0814 0815 0816 0817 0818 MIA 0814 0815 0816 0817 0818
MIN 81 78 80 82 80 MIN 87 88 87 85 85
%>100 0 0 0 0 0 %>100 0 1 0 0 0
%>95 0 0 0 0 0 %>95 6 11 4 2 2
%>90 1 1 1 2 4 %>90 36 45 37 22 20
%>85 15 8 13 23 19 %>85 64 69 64 55 54
%>80 62 37 52 70 51 %>80 87 86 84 76 76
%>75 91 77 86 94 81 %>75 97 96 95 92 92
%>70 99 96 98 99 96 %>70 99 99 99 98 98
MILWAUKEE_WI MOBILE_AL
MKE 0814 0815 0816 0817 0818 MOB 0814 0815 0816 0817 0818
MIN 66 66 69 65 63 MIN 79 79 80 80 80
%>100 0 0 0 0 0 %>100 0 0 1 1 1
%>95 0 0 0 0 0 %>95 0 1 3 4 4
%>90 0 0 0 0 0 %>90 4 6 10 13 13
%>85 0 0 0 0 0 %>85 17 20 26 29 29
%>80 0 0 2 0 0 %>80 44 44 49 51 52
%>75 1 2 11 1 0 %>75 75 71 72 73 73
%>70 18 20 43 14 8 %>70 93 89 88 88 88
NASHVILLE_TN NEW_YORK_CITY_NY
BNA 0814 0815 0816 0817 0818 NYC 0814 0815 0816 0817 0818
MIN 78 77 77 78 75 MIN 71 64 65 70 68
%>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 1 0 %>90 0 0 0 0 0
%>85 7 5 5 7 4 %>85 0 0 0 0 0
%>80 34 25 27 33 20 %>80 1 0 0 1 0
%>75 74 65 66 72 52 %>75 14 0 2 16 5
%>70 95 92 92 94 83 %>70 62 8 19 54 37
NORFOLK_VA ORLANDO_FL
ORF 0814 0815 0816 0817 0818 ORL 0814 0815 0816 0817 0818
MIN 81 76 73 76 77 MIN 79 79 79 80 80
%>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 4 0 0 2 1 %>90 3 2 2 4 6
%>85 24 3 1 9 7 %>85 15 12 14 17 20
%>80 59 19 10 28 30 %>80 45 41 44 47 47
%>75 83 57 36 57 68 %>75 78 77 79 79 76
%>70 95 88 69 82 92 %>70 95 95 96 95 93
PHILADELPHIA_PA PITTSBURGH_PA
PHL 0814 0815 0816 0817 0818 PIT 0814 0815 0816 0817 0818
MIN 71 63 64 70 68 MIN 65 57 63 69 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 3 0 %>80 0 0 0 1 0
%>75 13 1 1 18 6 %>75 1 0 2 10 0
%>70 59 6 10 52 33 %>70 12 2 12 40 5
PORTLAND_ME PROVIDENCE_RI
PWM 0814 0815 0816 0817 0818 PVD 0814 0815 0816 0817 0818
MIN 59 56 55 60 60 MIN 64 57 58 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 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 2 0 0 2 2
%>70 3 1 1 3 3 %>70 14 2 2 14 11
RALEIGH-DURHAM_NC RICHMOND_VA
RDU 0814 0815 0816 0817 0818 RIC 0814 0815 0816 0817 0818
MIN 78 75 72 76 75 MIN 74 69 68 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 1 0 0 1 0 %>90 0 0 0 0 0
%>85 7 1 1 7 2 %>85 1 0 0 3 0
%>80 32 12 7 25 16 %>80 10 1 1 15 3
%>75 70 46 30 54 53 %>75 42 12 10 40 24
%>70 94 84 64 81 87 %>70 81 43 36 71 67
SAVANNAH_GA TALLAHASSEE_FL
SAV 0814 0815 0816 0817 0818 TLH 0814 0815 0816 0817 0818
MIN 82 82 80 81 82 MIN 79 79 79 79 80
%>100 0 0 0 0 0 %>100 0 0 0 0 1
%>95 2 2 2 1 3 %>95 1 2 1 1 3
%>90 10 12 10 8 12 %>90 4 7 6 6 10
%>85 32 35 27 26 33 %>85 17 21 19 19 25
%>80 61 64 53 54 61 %>80 44 46 44 44 48
%>75 84 86 77 79 82 %>75 75 73 72 72 71
%>70 95 96 92 93 94 %>70 93 90 90 90 88
TAMPA_FL WASHINGTON_DC
TPA 0814 0815 0816 0817 0818 DCA 0814 0815 0816 0817 0818
MIN 82 81 83 83 85 MIN 73 66 67 73 71
%>100 0 0 0 0 1 %>100 0 0 0 0 0
%>95 2 2 2 3 8 %>95 0 0 0 0 0
%>90 12 9 14 17 25 %>90 0 0 0 0 0
%>85 35 31 40 43 51 %>85 0 0 0 2 0
%>80 62 61 68 70 74 %>80 2 0 1 12 1
%>75 83 83 87 87 88 %>75 27 2 7 39 15
%>70 94 95 96 96 95 %>70 83 19 30 72 56
URL IS WWW.WPC.NCEP.NOAA.GOV
$$