Heat Index Forecast Tables
Issued by NWS
Issued by NWS
826
FMUS23 KWNH 171819
PRBEHL
DAYS 3--7 HEAT INDEX FORECAST TABLES
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
1817 UTC MON AUG 17 2026
MINIMUM HEAT INDEX (DEG F) AND MINIMUM HI PROB (%) FRCSTS
AT EASTERN US CITIES - DAYS 3 TO 7 FROM MON AUG 17 2026
AKRON-CANTON_OH ALBANY_NY
CAK 0820 0821 0822 0823 0824 ALB 0820 0821 0822 0823 0824
MIN 60 56 59 60 57 MIN 61 56 59 62 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 0 0 %>75 0 0 0 0 0
%>70 3 1 2 0 0 %>70 1 0 0 1 1
ASHEVILLE_NC ATLANTA_GA
AVL 0820 0821 0822 0823 0824 ATL 0820 0821 0822 0823 0824
MIN 67 66 64 62 60 MIN 75 76 74 73 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 1 0 0 0
%>80 0 0 0 0 0 %>80 4 12 3 1 2
%>75 3 3 1 0 0 %>75 57 57 34 24 19
%>70 24 22 9 4 3 %>70 97 93 85 78 60
BALTIMORE_MD BIRMINGHAM_AL
BWI 0820 0821 0822 0823 0824 BHM 0820 0821 0822 0823 0824
MIN 73 70 70 70 67 MIN 75 75 73 73 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 1 1 0 0 0
%>80 1 0 0 0 0 %>80 13 13 5 3 3
%>75 27 9 9 7 4 %>75 54 49 32 27 20
%>70 77 48 51 50 25 %>70 91 86 77 74 59
BOSTON_MA BUFFALO_NY
BOS 0820 0821 0822 0823 0824 BUF 0820 0821 0822 0823 0824
MIN 68 65 64 66 66 MIN 57 56 61 62 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 0 0 0 0 0
%>70 30 8 5 16 15 %>70 0 0 2 1 0
CHARLESTON_SC CHARLESTON_WV
CHS 0820 0821 0822 0823 0824 CRW 0820 0821 0822 0823 0824
MIN 83 83 79 78 78 MIN 68 66 65 64 61
%>100 3 2 0 0 0 %>100 0 0 0 0 0
%>95 10 9 3 1 0 %>95 0 0 0 0 0
%>90 24 24 9 5 3 %>90 0 0 0 0 0
%>85 44 44 24 17 12 %>85 0 0 0 0 0
%>80 64 64 47 40 34 %>80 0 0 0 0 0
%>75 80 80 70 69 65 %>75 0 1 0 0 0
%>70 91 91 87 89 89 %>70 21 13 9 1 0
CHARLOTTE_NC CHICAGO_IL
CLT 0820 0821 0822 0823 0824 ORD 0820 0821 0822 0823 0824
MIN 75 73 71 70 68 MIN 62 63 65 62 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 3 2 0 0 0 %>85 0 0 0 0 0
%>80 17 11 3 1 0 %>80 0 0 0 0 0
%>75 48 37 19 14 6 %>75 1 0 1 0 0
%>70 80 71 56 51 35 %>70 7 7 9 4 4
CINCINNATI_OH CLEVELAND_OH
LUK 0820 0821 0822 0823 0824 CLE 0820 0821 0822 0823 0824
MIN 66 63 63 62 59 MIN 62 60 62 62 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 1 1 1 0 0 %>75 1 0 1 0 0
%>70 15 7 8 1 1 %>70 10 5 9 4 3
COLUMBIA_SC COLUMBUS_OH
CAE 0820 0821 0822 0823 0824 TZR 0820 0821 0822 0823 0824
MIN 77 76 74 74 73 MIN 64 59 61 61 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 2 2 0 0 0 %>90 0 0 0 0 0
%>85 10 10 2 1 0 %>85 0 0 0 0 0
%>80 31 30 13 9 4 %>80 0 0 0 0 0
%>75 62 59 44 39 28 %>75 0 0 0 0 0
%>70 86 84 79 78 73 %>70 7 2 5 0 0
DAYTON_OH DETROIT_MI
MGY 0820 0821 0822 0823 0824 DET 0820 0821 0822 0823 0824
MIN 65 60 61 61 58 MIN 61 62 65 62 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 1 0 0 %>75 0 0 0 0 0
%>70 8 3 5 0 0 %>70 2 4 9 3 2
EVANSVILLE_IN GRAND_RAPIDS_MI
EVV 0820 0821 0822 0823 0824 GRR 0820 0821 0822 0823 0824
MIN 69 66 66 65 62 MIN 53 56 61 56 54
%>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 5 3 3 0 1 %>75 0 0 0 0 0
%>70 43 20 20 8 8 %>70 0 1 2 0 0
GREENSBORO_NC HUNTSVILLE_AL
GSO 0820 0821 0822 0823 0824 HSV 0820 0821 0822 0823 0824
MIN 73 71 69 68 65 MIN 75 74 71 71 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 0 0 0 0 0 %>90 0 0 0 0 0
%>85 0 0 0 0 0 %>85 1 0 0 0 0
%>80 4 4 1 0 0 %>80 11 5 1 1 1
%>75 30 21 8 5 2 %>75 51 37 16 16 8
%>70 74 57 40 34 17 %>70 90 83 66 58 37
INDIANAPOLIS_IN KNOXVILLE_TN
IND 0820 0821 0822 0823 0824 TYS 0820 0821 0822 0823 0824
MIN 64 61 62 61 58 MIN 72 71 69 68 65
%>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 1 0 0 0 0
%>75 0 0 0 0 0 %>75 14 7 2 2 0
%>70 5 3 6 0 1 %>70 70 63 37 29 9
LEXINGTON_KY LOUISVILLE_KY
LEX 0820 0821 0822 0823 0824 SDF 0820 0821 0822 0823 0824
MIN 68 65 64 63 60 MIN 69 66 66 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 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 3 2 1 0 0 %>75 2 2 1 0 0
%>70 28 16 11 3 2 %>70 41 19 15 6 4
MEMPHIS_TN MIAMI_FL
MEM 0820 0821 0822 0823 0824 MIA 0820 0821 0822 0823 0824
MIN 77 74 73 73 72 MIN 88 86 86 86 86
%>100 0 0 0 0 0 %>100 1 0 0 0 1
%>95 0 0 0 0 0 %>95 12 4 5 5 6
%>90 1 0 0 0 0 %>90 43 29 28 26 30
%>85 9 3 0 1 1 %>85 69 58 58 56 58
%>80 32 17 7 7 7 %>80 88 81 83 80 82
%>75 67 46 34 33 28 %>75 97 95 96 95 96
%>70 91 78 75 71 61 %>70 99 99 99 99 99
MILWAUKEE_WI MOBILE_AL
MKE 0820 0821 0822 0823 0824 MOB 0820 0821 0822 0823 0824
MIN 61 63 64 60 60 MIN 78 77 77 77 77
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 1 1 1 1 1
%>90 0 0 0 0 0 %>90 6 4 5 4 5
%>85 0 0 0 0 0 %>85 18 14 16 14 14
%>80 0 0 0 0 0 %>80 40 33 35 34 33
%>75 0 0 0 0 0 %>75 67 59 61 62 59
%>70 4 6 5 2 3 %>70 87 81 82 84 81
NASHVILLE_TN NEW_YORK_CITY_NY
BNA 0820 0821 0822 0823 0824 NYC 0820 0821 0822 0823 0824
MIN 73 71 69 69 66 MIN 72 68 69 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 0 0 0 0 0 %>90 0 0 0 0 0
%>85 0 0 0 0 0 %>85 0 0 0 0 0
%>80 5 1 0 0 0 %>80 1 0 0 0 0
%>75 33 16 7 6 3 %>75 19 4 5 6 4
%>70 78 61 43 36 20 %>70 75 34 45 51 32
NORFOLK_VA ORLANDO_FL
ORF 0820 0821 0822 0823 0824 ORL 0820 0821 0822 0823 0824
MIN 78 76 75 75 73 MIN 80 79 79 78 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 1 0 0 0 0 %>90 4 3 1 0 0
%>85 9 4 2 1 0 %>85 18 15 8 5 4
%>80 37 23 14 11 3 %>80 49 44 39 33 32
%>75 75 59 49 51 35 %>75 81 76 79 78 78
%>70 95 88 84 87 81 %>70 96 94 97 98 98
PHILADELPHIA_PA PITTSBURGH_PA
PHL 0820 0821 0822 0823 0824 PIT 0820 0821 0822 0823 0824
MIN 71 68 69 69 67 MIN 63 58 62 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 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 12 4 3 3 2 %>75 0 0 0 0 0
%>70 69 35 37 43 20 %>70 3 1 3 0 0
PORTLAND_ME PROVIDENCE_RI
PWM 0820 0821 0822 0823 0824 PVD 0820 0821 0822 0823 0824
MIN 63 59 59 61 61 MIN 68 64 64 66 65
%>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 1 1 1 3 2
%>70 5 2 1 3 4 %>70 29 9 10 20 16
RALEIGH-DURHAM_NC RICHMOND_VA
RDU 0820 0821 0822 0823 0824 RIC 0820 0821 0822 0823 0824
MIN 76 74 71 71 69 MIN 73 71 70 70 67
%>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 1 0 0 0 %>85 0 0 0 0 0
%>80 18 10 3 2 1 %>80 6 2 1 1 0
%>75 56 39 21 18 8 %>75 35 18 11 11 4
%>70 89 76 62 62 39 %>70 80 56 48 49 26
SAVANNAH_GA TALLAHASSEE_FL
SAV 0820 0821 0822 0823 0824 TLH 0820 0821 0822 0823 0824
MIN 79 80 78 77 77 MIN 78 78 78 77 77
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 2 2 1 0 0 %>95 1 1 1 0 0
%>90 9 10 3 1 1 %>90 3 4 3 2 1
%>85 24 25 13 8 6 %>85 12 15 12 10 8
%>80 46 48 35 28 26 %>80 37 38 35 33 28
%>75 71 72 66 63 61 %>75 70 68 67 65 62
%>70 88 89 89 90 89 %>70 91 89 89 88 88
TAMPA_FL WASHINGTON_DC
TPA 0820 0821 0822 0823 0824 DCA 0820 0821 0822 0823 0824
MIN 86 83 82 82 82 MIN 73 70 70 70 67
%>100 3 1 0 0 0 %>100 0 0 0 0 0
%>95 12 5 3 2 2 %>95 0 0 0 0 0
%>90 31 18 14 11 12 %>90 0 0 0 0 0
%>85 57 42 38 36 36 %>85 0 0 0 0 0
%>80 78 66 66 66 65 %>80 1 0 0 0 0
%>75 90 84 85 86 85 %>75 25 9 7 5 2
%>70 96 94 95 96 95 %>70 81 52 50 47 21
URL IS WWW.WPC.NCEP.NOAA.GOV
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