Heat Index Forecast Tables
Issued by NWS
Issued by NWS
013
FMUS23 KWNH 180744
PRBEHL
DAYS 3--7 HEAT INDEX FORECAST TABLES
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
0742 UTC TUE AUG 18 2026
MINIMUM HEAT INDEX (DEG F) AND MINIMUM HI PROB (%) FRCSTS
AT EASTERN US CITIES - DAYS 3 TO 7 FROM TUE AUG 18 2026
AKRON-CANTON_OH ALBANY_NY
CAK 0821 0822 0823 0824 0825 ALB 0821 0822 0823 0824 0825
MIN 57 60 60 57 58 MIN 56 59 61 58 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 1 2 0 0 1 %>70 0 0 2 0 0
ASHEVILLE_NC ATLANTA_GA
AVL 0821 0822 0823 0824 0825 ATL 0821 0822 0823 0824 0825
MIN 67 65 62 60 61 MIN 77 74 72 72 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 1 0 0 0 1
%>80 0 0 0 0 0 %>80 17 3 0 3 6
%>75 3 1 0 0 1 %>75 74 41 15 23 28
%>70 24 9 4 4 7 %>70 98 91 76 66 65
BALTIMORE_MD BIRMINGHAM_AL
BWI 0821 0822 0823 0824 0825 BHM 0821 0822 0823 0824 0825
MIN 70 70 70 67 66 MIN 76 74 72 71 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 1 0 0 0 2
%>80 0 0 0 0 0 %>80 12 6 1 3 9
%>75 8 7 5 3 5 %>75 57 36 18 21 32
%>70 46 55 48 23 25 %>70 94 81 71 61 65
BOSTON_MA BUFFALO_NY
BOS 0821 0822 0823 0824 0825 BUF 0821 0822 0823 0824 0825
MIN 64 64 65 64 62 MIN 56 61 61 58 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 0 0 0 0 0 %>75 0 0 0 0 0
%>70 8 5 11 8 3 %>70 0 2 0 0 0
CHARLESTON_SC CHARLESTON_WV
CHS 0821 0822 0823 0824 0825 CRW 0821 0822 0823 0824 0825
MIN 83 80 78 78 78 MIN 66 66 64 61 62
%>100 2 1 0 0 0 %>100 0 0 0 0 0
%>95 9 3 1 1 1 %>95 0 0 0 0 0
%>90 24 11 3 4 5 %>90 0 0 0 0 0
%>85 44 27 14 15 17 %>85 0 0 0 0 0
%>80 64 50 36 38 38 %>80 0 0 0 0 0
%>75 81 72 65 66 65 %>75 1 0 0 0 1
%>70 91 88 88 88 85 %>70 15 10 1 1 5
CHARLOTTE_NC CHICAGO_IL
CLT 0821 0822 0823 0824 0825 ORD 0821 0822 0823 0824 0825
MIN 74 71 70 69 69 MIN 64 66 63 62 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 1 0 0 0 0 %>85 0 0 0 0 0
%>80 11 2 1 1 2 %>80 0 0 0 0 0
%>75 41 19 14 11 13 %>75 1 1 0 0 2
%>70 78 61 53 41 40 %>70 8 9 3 5 13
CINCINNATI_OH CLEVELAND_OH
LUK 0821 0822 0823 0824 0825 CLE 0821 0822 0823 0824 0825
MIN 63 63 63 60 62 MIN 60 63 63 61 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 0 0 %>80 0 0 0 0 0
%>75 1 0 0 0 1 %>75 0 1 0 0 1
%>70 7 6 2 2 8 %>70 6 11 6 3 6
COLUMBIA_SC COLUMBUS_OH
CAE 0821 0822 0823 0824 0825 TZR 0821 0822 0823 0824 0825
MIN 77 75 74 73 73 MIN 60 61 61 59 60
%>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 8 2 1 0 1 %>85 0 0 0 0 0
%>80 30 15 9 5 10 %>80 0 0 0 0 0
%>75 63 48 39 31 34 %>75 0 0 0 0 0
%>70 88 82 79 73 69 %>70 2 3 0 0 3
DAYTON_OH DETROIT_MI
MGY 0821 0822 0823 0824 0825 DET 0821 0822 0823 0824 0825
MIN 61 62 61 59 61 MIN 63 66 63 61 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 1 %>75 0 0 0 0 1
%>70 3 4 0 1 6 %>70 5 11 3 3 9
EVANSVILLE_IN GRAND_RAPIDS_MI
EVV 0821 0822 0823 0824 0825 GRR 0821 0822 0823 0824 0825
MIN 67 66 66 64 67 MIN 57 62 56 54 57
%>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 2 %>80 0 0 0 0 0
%>75 2 1 1 2 10 %>75 0 0 0 0 0
%>70 21 16 13 13 32 %>70 1 2 0 0 2
GREENSBORO_NC HUNTSVILLE_AL
GSO 0821 0822 0823 0824 0825 HSV 0821 0822 0823 0824 0825
MIN 72 69 68 66 66 MIN 74 72 71 69 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 0 0 0 0 0 %>85 0 0 0 0 1
%>80 2 0 0 0 1 %>80 7 1 0 1 5
%>75 22 7 5 4 6 %>75 43 16 10 11 22
%>70 67 44 35 22 24 %>70 87 70 57 43 55
INDIANAPOLIS_IN KNOXVILLE_TN
IND 0821 0822 0823 0824 0825 TYS 0821 0822 0823 0824 0825
MIN 61 63 61 59 62 MIN 72 69 68 65 66
%>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 1 %>75 11 1 1 2 5
%>70 3 4 1 2 8 %>70 74 40 24 15 24
LEXINGTON_KY LOUISVILLE_KY
LEX 0821 0822 0823 0824 0825 SDF 0821 0822 0823 0824 0825
MIN 65 64 64 61 64 MIN 67 66 66 63 66
%>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 1
%>75 1 1 0 0 4 %>75 1 0 0 1 6
%>70 14 9 5 4 16 %>70 20 11 11 8 24
MEMPHIS_TN MIAMI_FL
MEM 0821 0822 0823 0824 0825 MIA 0821 0822 0823 0824 0825
MIN 75 73 74 73 75 MIN 88 87 86 86 87
%>100 0 0 0 0 0 %>100 1 1 1 1 1
%>95 0 0 0 0 0 %>95 11 8 6 6 10
%>90 0 0 0 0 1 %>90 39 33 30 31 37
%>85 2 0 1 2 7 %>85 66 61 58 58 63
%>80 17 5 8 11 24 %>80 87 85 82 79 84
%>75 53 33 38 37 52 %>75 97 97 95 94 96
%>70 87 78 79 70 79 %>70 99 99 99 99 99
MILWAUKEE_WI MOBILE_AL
MKE 0821 0822 0823 0824 0825 MOB 0821 0822 0823 0824 0825
MIN 64 65 62 62 64 MIN 78 77 77 77 78
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 1 1 0 2 1
%>90 0 0 0 0 0 %>90 5 4 2 6 6
%>85 0 0 0 0 0 %>85 15 14 9 16 17
%>80 0 0 0 0 0 %>80 37 35 28 36 37
%>75 0 1 0 0 1 %>75 65 63 60 61 62
%>70 9 7 3 4 10 %>70 86 85 87 82 83
NASHVILLE_TN NEW_YORK_CITY_NY
BNA 0821 0822 0823 0824 0825 NYC 0821 0822 0823 0824 0825
MIN 72 69 69 67 69 MIN 68 69 69 67 66
%>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 0 0 0 0 5 %>80 0 0 0 0 0
%>75 14 4 6 5 18 %>75 2 3 4 1 2
%>70 74 43 44 26 45 %>70 28 40 40 20 19
NORFOLK_VA ORLANDO_FL
ORF 0821 0822 0823 0824 0825 ORL 0821 0822 0823 0824 0825
MIN 77 76 75 74 73 MIN 79 79 78 79 79
%>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 2 1 0 0 1
%>85 5 1 0 0 0 %>85 14 11 6 6 8
%>80 28 14 10 5 6 %>80 45 42 35 36 38
%>75 67 57 51 39 37 %>75 80 80 79 80 80
%>70 92 91 89 83 75 %>70 97 97 98 98 97
PHILADELPHIA_PA PITTSBURGH_PA
PHL 0821 0822 0823 0824 0825 PIT 0821 0822 0823 0824 0825
MIN 68 69 69 66 65 MIN 59 62 62 58 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 2 2 2 1 1 %>75 0 0 0 0 0
%>70 29 35 34 13 14 %>70 1 3 0 0 1
PORTLAND_ME PROVIDENCE_RI
PWM 0821 0822 0823 0824 0825 PVD 0821 0822 0823 0824 0825
MIN 59 59 59 59 57 MIN 64 64 65 63 60
%>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 1 0 %>75 1 1 2 1 0
%>70 2 1 3 4 2 %>70 10 11 14 9 3
RALEIGH-DURHAM_NC RICHMOND_VA
RDU 0821 0822 0823 0824 0825 RIC 0821 0822 0823 0824 0825
MIN 74 72 71 69 68 MIN 71 70 70 67 66
%>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 0 0 %>85 0 0 0 0 0
%>80 10 1 1 1 3 %>80 2 0 0 0 1
%>75 45 19 16 10 13 %>75 17 8 9 3 5
%>70 85 73 65 42 38 %>70 59 52 50 24 23
SAVANNAH_GA TALLAHASSEE_FL
SAV 0821 0822 0823 0824 0825 TLH 0821 0822 0823 0824 0825
MIN 80 78 76 77 77 MIN 78 78 77 77 76
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 2 1 0 0 0 %>95 0 0 0 0 0
%>90 10 5 1 1 1 %>90 3 2 1 2 1
%>85 26 15 5 7 8 %>85 12 11 5 9 6
%>80 49 37 24 27 29 %>80 39 34 27 29 26
%>75 73 65 61 63 63 %>75 73 67 69 62 60
%>70 89 86 90 90 89 %>70 92 89 94 87 88
TAMPA_FL WASHINGTON_DC
TPA 0821 0822 0823 0824 0825 DCA 0821 0822 0823 0824 0825
MIN 83 83 82 82 82 MIN 70 70 70 67 66
%>100 1 0 0 0 0 %>100 0 0 0 0 0
%>95 5 3 2 2 2 %>95 0 0 0 0 0
%>90 19 14 11 12 11 %>90 0 0 0 0 0
%>85 44 40 35 37 33 %>85 0 0 0 0 0
%>80 70 68 65 66 62 %>80 0 0 0 0 0
%>75 87 87 86 86 84 %>75 7 4 3 2 4
%>70 95 96 96 96 95 %>70 51 56 46 20 22
URL IS WWW.WPC.NCEP.NOAA.GOV
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