Heat Index Forecast Tables
Issued by NWS
Issued by NWS
817
FMUS23 KWNH 191609
PRBEHI
DAYS 3--7 HEAT INDEX FORECAST TABLES
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
1607 UTC TUE AUG 19 2025
MEAN HEAT INDEX (DEG F) AND MEAN HI PROB (%) FRCSTS
AT EASTERN US CITIES - DAYS 3 TO 7 FROM TUE AUG 19 2025
AKRON-CANTON_OH ALBANY_NY
CAK 0822 0823 0824 0825 0826 ALB 0822 0823 0824 0825 0826
MEAN 73 75 69 63 62 MEAN 67 70 71 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 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 2 1 0 0 %>80 0 0 1 0 0
%>75 23 44 8 0 0 %>75 2 9 12 2 0
%>70 78 96 42 5 1 %>70 23 54 55 31 3
ASHEVILLE_NC ATLANTA_GA
AVL 0822 0823 0824 0825 0826 ATL 0822 0823 0824 0825 0826
MEAN 70 70 71 68 65 MEAN 81 80 81 78 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 1 1 1 0 0
%>85 0 0 0 0 0 %>85 18 10 13 2 1
%>80 0 0 1 0 0 %>80 65 48 59 27 13
%>75 9 7 14 6 2 %>75 95 89 94 78 50
%>70 55 51 62 34 14 %>70 100 99 100 98 87
BALTIMORE_MD BIRMINGHAM_AL
BWI 0822 0823 0824 0825 0826 BHM 0822 0823 0824 0825 0826
MEAN 73 74 78 74 70 MEAN 85 83 83 78 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 10 4 1 0 0
%>85 0 0 4 0 0 %>85 52 32 22 6 3
%>80 1 2 32 4 0 %>80 92 78 79 33 18
%>75 17 39 80 40 9 %>75 100 98 99 75 52
%>70 87 95 98 87 54 %>70 100 100 100 96 85
BOSTON_MA BUFFALO_NY
BOS 0822 0823 0824 0825 0826 BUF 0822 0823 0824 0825 0826
MEAN 66 70 72 73 68 MEAN 70 74 69 64 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 2 3 0 %>80 0 2 0 0 0
%>75 0 6 22 27 4 %>75 3 33 4 0 0
%>70 8 48 71 76 33 %>70 48 89 42 3 0
CHARLESTON_SC CHARLESTON_WV
CHS 0822 0823 0824 0825 0826 CRW 0822 0823 0824 0825 0826
MEAN 85 83 85 86 84 MEAN 79 79 75 68 66
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 1 0 1 0 1 %>95 0 0 0 0 0
%>90 10 3 11 12 9 %>90 0 1 0 0 0
%>85 47 28 48 66 40 %>85 5 10 0 0 0
%>80 86 78 87 98 79 %>80 41 44 10 1 0
%>75 99 98 99 100 97 %>75 88 84 53 8 3
%>70 100 100 100 100 100 %>70 100 99 93 37 19
CHARLOTTE_NC CHICAGO_IL
CLT 0822 0823 0824 0825 0826 ORD 0822 0823 0824 0825 0826
MEAN 78 77 79 76 73 MEAN 75 74 66 64 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 2 2 7 1 0 %>85 1 0 0 0 0
%>80 27 21 39 17 6 %>80 8 4 0 0 0
%>75 79 69 82 64 31 %>75 54 39 1 0 1
%>70 99 96 98 95 73 %>70 95 89 14 4 8
CINCINNATI_OH CLEVELAND_OH
LUK 0822 0823 0824 0825 0826 CLE 0822 0823 0824 0825 0826
MEAN 79 79 73 67 66 MEAN 73 75 70 65 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 0 0 0 0 %>90 0 0 0 0 0
%>85 7 5 0 0 0 %>85 0 0 0 0 0
%>80 37 40 6 0 0 %>80 1 8 0 0 0
%>75 78 88 32 4 4 %>75 27 55 9 0 0
%>70 97 99 74 26 23 %>70 87 96 54 9 6
COLUMBIA_SC COLUMBUS_OH
CAE 0822 0823 0824 0825 0826 TZR 0822 0823 0824 0825 0826
MEAN 80 79 81 81 77 MEAN 75 77 70 65 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 0 1 0 0 %>90 0 0 0 0 0
%>85 14 7 15 9 6 %>85 0 0 0 0 0
%>80 53 42 62 61 30 %>80 10 14 2 0 0
%>75 89 87 95 97 69 %>75 53 70 17 1 1
%>70 99 99 100 100 94 %>70 93 99 54 10 8
DAYTON_OH DETROIT_MI
MGY 0822 0823 0824 0825 0826 DET 0822 0823 0824 0825 0826
MEAN 77 78 71 65 65 MEAN 73 75 69 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 4 1 0 0 0 %>85 0 0 0 0 0
%>80 25 24 2 0 0 %>80 1 4 0 0 0
%>75 66 79 19 1 1 %>75 27 46 2 0 0
%>70 93 99 59 13 12 %>70 85 94 39 2 1
EVANSVILLE_IN GRAND_RAPIDS_MI
EVV 0822 0823 0824 0825 0826 GRR 0822 0823 0824 0825 0826
MEAN 79 79 73 68 68 MEAN 71 71 65 61 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 9 2 1 0 0 %>85 0 0 0 0 0
%>80 43 34 8 0 1 %>80 0 0 0 0 0
%>75 84 89 36 7 9 %>75 11 9 0 0 0
%>70 99 100 75 36 36 %>70 69 67 6 1 0
GREENSBORO_NC HUNTSVILLE_AL
GSO 0822 0823 0824 0825 0826 HSV 0822 0823 0824 0825 0826
MEAN 74 75 77 74 69 MEAN 84 83 81 75 73
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 1 0 0 0 0
%>90 0 0 0 0 0 %>90 10 5 1 0 0
%>85 0 0 2 1 0 %>85 44 32 16 4 2
%>80 6 9 22 8 2 %>80 84 77 65 20 11
%>75 44 49 66 40 13 %>75 98 97 96 51 35
%>70 89 90 95 81 45 %>70 100 100 100 82 68
INDIANAPOLIS_IN KNOXVILLE_TN
IND 0822 0823 0824 0825 0826 TYS 0822 0823 0824 0825 0826
MEAN 75 75 69 65 64 MEAN 81 80 78 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 3 2 0 0 0
%>85 1 0 0 0 0 %>85 19 13 3 1 0
%>80 11 6 1 0 0 %>80 57 48 30 7 2
%>75 46 52 9 1 1 %>75 89 84 80 32 14
%>70 86 95 42 9 11 %>70 99 98 99 70 45
LEXINGTON_KY LOUISVILLE_KY
LEX 0822 0823 0824 0825 0826 SDF 0822 0823 0824 0825 0826
MEAN 80 80 75 69 67 MEAN 81 81 75 69 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 2 1 0 0 0
%>85 10 6 1 0 0 %>85 17 12 1 0 0
%>80 51 50 10 1 0 %>80 56 58 11 1 1
%>75 91 94 48 9 4 %>75 90 95 49 9 9
%>70 100 100 88 40 25 %>70 99 100 88 43 37
MEMPHIS_TN MIAMI_FL
MEM 0822 0823 0824 0825 0826 MIA 0822 0823 0824 0825 0826
MEAN 85 85 82 77 74 MEAN 95 95 95 94 94
%>100 0 0 0 0 0 %>100 14 15 18 13 9
%>95 1 1 0 0 0 %>95 47 46 50 43 38
%>90 10 9 1 0 0 %>90 87 82 85 83 82
%>85 46 49 21 5 2 %>85 99 98 98 98 99
%>80 86 90 73 26 14 %>80 100 100 100 100 100
%>75 99 99 98 64 44 %>75 100 100 100 100 100
%>70 100 100 100 91 77 %>70 100 100 100 100 100
MILWAUKEE_WI MOBILE_AL
MKE 0822 0823 0824 0825 0826 MOB 0822 0823 0824 0825 0826
MEAN 74 71 64 62 63 MEAN 89 88 88 87 84
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 5 3 3 2 3
%>90 0 0 0 0 0 %>90 36 27 31 20 16
%>85 1 0 0 0 0 %>85 82 74 80 68 44
%>80 5 2 0 0 0 %>80 99 97 98 96 75
%>75 32 16 1 1 1 %>75 100 100 100 100 94
%>70 82 62 6 4 6 %>70 100 100 100 100 99
NASHVILLE_TN NEW_YORK_CITY_NY
BNA 0822 0823 0824 0825 0826 NYC 0822 0823 0824 0825 0826
MEAN 84 84 79 72 71 MEAN 72 74 76 75 71
%>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 12 6 0 0 0 %>90 0 0 0 0 0
%>85 44 38 5 0 0 %>85 0 0 0 0 0
%>80 82 85 39 6 4 %>80 0 1 11 4 0
%>75 97 99 86 28 20 %>75 14 28 60 49 9
%>70 100 100 99 67 55 %>70 72 92 96 94 58
NORFOLK_VA ORLANDO_FL
ORF 0822 0823 0824 0825 0826 ORL 0822 0823 0824 0825 0826
MEAN 74 75 79 78 75 MEAN 92 91 91 92 92
%>100 0 0 0 0 0 %>100 6 4 6 5 7
%>95 0 0 0 0 0 %>95 30 20 26 25 29
%>90 0 0 0 0 0 %>90 69 54 60 61 66
%>85 0 0 4 1 0 %>85 94 85 88 90 91
%>80 0 1 39 27 7 %>80 99 98 98 99 99
%>75 37 57 90 89 51 %>75 100 100 100 100 100
%>70 99 100 100 100 94 %>70 100 100 100 100 100
PHILADELPHIA_PA PITTSBURGH_PA
PHL 0822 0823 0824 0825 0826 PIT 0822 0823 0824 0825 0826
MEAN 71 72 76 73 69 MEAN 73 76 72 65 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 12 4 0 %>80 1 7 1 0 0
%>75 5 12 58 34 5 %>75 24 58 21 1 0
%>70 68 85 94 82 39 %>70 82 97 72 13 4
PORTLAND_ME PROVIDENCE_RI
PWM 0822 0823 0824 0825 0826 PVD 0822 0823 0824 0825 0826
MEAN 65 68 69 70 66 MEAN 67 70 71 73 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 0 0 0 0 0 %>80 0 0 1 1 0
%>75 0 1 3 4 1 %>75 0 4 15 22 5
%>70 2 25 35 42 14 %>70 14 43 67 80 32
RALEIGH-DURHAM_NC RICHMOND_VA
RDU 0822 0823 0824 0825 0826 RIC 0822 0823 0824 0825 0826
MEAN 76 75 78 77 73 MEAN 73 74 78 76 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 1 0 0
%>85 0 1 6 1 0 %>85 0 0 7 1 0
%>80 9 11 33 21 5 %>80 1 1 37 16 3
%>75 65 54 76 73 31 %>75 26 35 78 61 21
%>70 98 92 97 98 74 %>70 89 94 97 94 63
SAVANNAH_GA TALLAHASSEE_FL
SAV 0822 0823 0824 0825 0826 TLH 0822 0823 0824 0825 0826
MEAN 87 84 86 87 85 MEAN 91 88 88 89 87
%>100 0 0 0 0 0 %>100 1 1 1 1 1
%>95 5 1 2 2 2 %>95 15 7 8 7 6
%>90 28 11 19 23 14 %>90 58 35 35 39 27
%>85 67 44 60 72 49 %>85 92 76 73 82 64
%>80 93 82 91 97 85 %>80 100 96 95 98 91
%>75 99 98 99 100 98 %>75 100 100 100 100 99
%>70 100 100 100 100 100 %>70 100 100 100 100 100
TAMPA_FL WASHINGTON_DC
TPA 0822 0823 0824 0825 0826 DCA 0822 0823 0824 0825 0826
MEAN 94 93 93 94 94 MEAN 73 74 79 74 70
%>100 10 13 14 15 13 %>100 0 0 0 0 0
%>95 38 37 38 42 42 %>95 0 0 0 0 0
%>90 76 67 67 73 77 %>90 0 0 0 0 0
%>85 96 89 89 93 95 %>85 0 0 5 0 0
%>80 100 98 98 99 100 %>80 0 2 35 7 1
%>75 100 100 100 100 100 %>75 17 42 81 40 11
%>70 100 100 100 100 100 %>70 89 94 98 83 53
URL IS WWW.WPC.NCEP.NOAA.GOV
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