Heat Index Forecast Tables
Issued by NWS
Issued by NWS
388
FMUS23 KWNH 181608
PRBEHI
DAYS 3--7 HEAT INDEX FORECAST TABLES
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
1607 UTC MON AUG 18 2025
MEAN HEAT INDEX (DEG F) AND MEAN HI PROB (%) FRCSTS
AT EASTERN US CITIES - DAYS 3 TO 7 FROM MON AUG 18 2025
AKRON-CANTON_OH ALBANY_NY
CAK 0821 0822 0823 0824 0825 ALB 0821 0822 0823 0824 0825
MEAN 75 73 75 70 65 MEAN 69 68 72 72 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 4 3 8 2 0 %>80 0 0 1 5 0
%>75 51 31 51 13 1 %>75 6 1 20 27 3
%>70 96 83 93 48 12 %>70 36 31 68 68 31
ASHEVILLE_NC ATLANTA_GA
AVL 0821 0822 0823 0824 0825 ATL 0821 0822 0823 0824 0825
MEAN 75 72 71 71 69 MEAN 86 83 81 81 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 8 5 3 1 0
%>85 1 0 0 0 0 %>85 58 31 19 15 6
%>80 10 3 1 2 1 %>80 97 73 56 61 40
%>75 50 22 16 17 9 %>75 100 96 88 95 86
%>70 91 67 60 63 41 %>70 100 100 99 100 99
BALTIMORE_MD BIRMINGHAM_AL
BWI 0821 0822 0823 0824 0825 BHM 0821 0822 0823 0824 0825
MEAN 77 77 78 79 75 MEAN 87 85 83 82 79
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 2 1 0 0 0
%>90 0 0 0 1 0 %>90 23 10 5 2 1
%>85 4 1 4 8 0 %>85 71 47 34 23 8
%>80 26 17 32 43 7 %>80 97 87 79 72 38
%>75 68 66 80 85 48 %>75 100 99 98 97 78
%>70 95 96 98 99 91 %>70 100 100 100 100 97
BOSTON_MA BUFFALO_NY
BOS 0821 0822 0823 0824 0825 BUF 0821 0822 0823 0824 0825
MEAN 66 67 71 73 71 MEAN 70 70 75 70 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 2 6 1 %>80 0 0 4 0 0
%>75 0 1 18 34 16 %>75 7 5 45 9 0
%>70 7 17 58 79 62 %>70 50 49 93 48 7
CHARLESTON_SC CHARLESTON_WV
CHS 0821 0822 0823 0824 0825 CRW 0821 0822 0823 0824 0825
MEAN 88 86 85 86 87 MEAN 80 80 81 76 70
%>100 1 0 0 0 0 %>100 0 0 0 0 0
%>95 9 3 1 3 2 %>95 0 0 0 0 0
%>90 36 18 12 20 19 %>90 0 1 3 0 0
%>85 74 56 48 59 66 %>85 8 10 18 1 0
%>80 95 89 86 91 96 %>80 54 49 54 15 3
%>75 100 99 99 99 100 %>75 94 89 87 56 18
%>70 100 100 100 100 100 %>70 100 99 98 91 52
CHARLOTTE_NC CHICAGO_IL
CLT 0821 0822 0823 0824 0825 ORD 0821 0822 0823 0824 0825
MEAN 83 80 77 79 77 MEAN 73 75 75 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 4 1 0 0 0 %>90 0 0 0 0 0
%>85 30 12 3 8 2 %>85 0 0 1 0 0
%>80 76 47 22 43 23 %>80 1 7 7 0 0
%>75 98 85 64 86 70 %>75 28 54 47 2 1
%>70 100 98 93 99 96 %>70 89 96 91 20 13
CINCINNATI_OH CLEVELAND_OH
LUK 0821 0822 0823 0824 0825 CLE 0821 0822 0823 0824 0825
MEAN 79 79 79 73 69 MEAN 74 73 76 70 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 5 3 3 1 0 %>85 0 0 0 0 0
%>80 42 37 39 9 1 %>80 2 1 9 1 0
%>75 90 89 90 37 9 %>75 40 30 62 14 1
%>70 100 100 100 74 39 %>70 92 87 97 54 16
COLUMBIA_SC COLUMBUS_OH
CAE 0821 0822 0823 0824 0825 TZR 0821 0822 0823 0824 0825
MEAN 86 83 81 83 82 MEAN 77 75 77 71 66
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 3 1 0 0 0 %>95 0 0 0 0 0
%>90 20 10 2 3 1 %>90 0 0 0 0 0
%>85 62 38 17 27 20 %>85 0 0 1 0 0
%>80 93 75 57 73 72 %>80 17 9 16 4 0
%>75 100 95 90 97 98 %>75 76 56 70 22 3
%>70 100 100 99 100 100 %>70 99 95 98 57 19
DAYTON_OH DETROIT_MI
MGY 0821 0822 0823 0824 0825 DET 0821 0822 0823 0824 0825
MEAN 78 77 78 71 67 MEAN 74 74 76 69 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 3 1 1 0 0 %>85 0 0 0 0 0
%>80 29 21 23 4 0 %>80 1 4 9 0 0
%>75 79 75 82 24 3 %>75 31 38 58 7 0
%>70 98 99 99 61 23 %>70 90 88 95 44 10
EVANSVILLE_IN GRAND_RAPIDS_MI
EVV 0821 0822 0823 0824 0825 GRR 0821 0822 0823 0824 0825
MEAN 81 81 80 74 70 MEAN 71 72 73 66 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 9 6 4 2 0 %>85 0 0 0 0 0
%>80 58 59 49 13 2 %>80 0 0 2 0 0
%>75 96 97 95 42 17 %>75 10 18 25 1 0
%>70 100 100 100 78 53 %>70 68 76 78 16 3
GREENSBORO_NC HUNTSVILLE_AL
GSO 0821 0822 0823 0824 0825 HSV 0821 0822 0823 0824 0825
MEAN 79 76 74 77 74 MEAN 86 84 83 81 76
%>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 14 4 6 1 1
%>85 6 2 1 2 1 %>85 64 36 35 14 5
%>80 41 20 12 23 10 %>80 97 85 79 63 24
%>75 86 63 45 69 44 %>75 100 99 98 96 59
%>70 99 93 82 96 84 %>70 100 100 100 100 87
INDIANAPOLIS_IN KNOXVILLE_TN
IND 0821 0822 0823 0824 0825 TYS 0821 0822 0823 0824 0825
MEAN 76 76 76 70 66 MEAN 83 82 80 78 74
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 1 0 0 0
%>90 0 0 0 0 0 %>90 7 6 4 0 0
%>85 1 0 0 0 0 %>85 35 27 20 5 1
%>80 15 11 8 2 0 %>80 77 64 53 34 12
%>75 65 62 57 15 2 %>75 97 91 84 80 42
%>70 96 97 96 49 19 %>70 100 99 97 98 78
LEXINGTON_KY LOUISVILLE_KY
LEX 0821 0822 0823 0824 0825 SDF 0821 0822 0823 0824 0825
MEAN 81 81 81 75 70 MEAN 82 82 81 75 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 1 1 0 0 0
%>85 12 8 11 2 0 %>85 18 15 13 2 0
%>80 64 59 58 15 2 %>80 69 67 65 17 3
%>75 97 97 95 53 14 %>75 97 97 97 53 19
%>70 100 100 100 87 48 %>70 100 100 100 87 56
MEMPHIS_TN MIAMI_FL
MEM 0821 0822 0823 0824 0825 MIA 0821 0822 0823 0824 0825
MEAN 87 86 86 82 77 MEAN 96 95 94 95 94
%>100 0 0 0 0 0 %>100 18 16 12 16 11
%>95 3 1 1 0 0 %>95 51 47 40 46 38
%>90 25 16 13 2 1 %>90 87 82 76 81 76
%>85 68 59 56 21 7 %>85 99 97 96 97 96
%>80 95 93 93 64 30 %>80 100 100 100 100 100
%>75 100 100 100 94 67 %>75 100 100 100 100 100
%>70 100 100 100 100 92 %>70 100 100 100 100 100
MILWAUKEE_WI MOBILE_AL
MKE 0821 0822 0823 0824 0825 MOB 0821 0822 0823 0824 0825
MEAN 71 73 72 65 64 MEAN 91 88 87 88 87
%>100 0 0 0 0 0 %>100 1 0 0 0 0
%>95 0 0 0 0 0 %>95 12 7 5 6 3
%>90 0 0 0 0 0 %>90 60 36 29 32 27
%>85 0 0 0 0 0 %>85 95 78 70 74 72
%>80 1 2 4 0 0 %>80 100 97 94 96 97
%>75 5 24 24 1 1 %>75 100 100 100 100 100
%>70 66 88 66 11 7 %>70 100 100 100 100 100
NASHVILLE_TN NEW_YORK_CITY_NY
BNA 0821 0822 0823 0824 0825 NYC 0821 0822 0823 0824 0825
MEAN 86 85 84 79 74 MEAN 74 73 76 77 74
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 1 1 0 0 0 %>95 0 0 0 0 0
%>90 12 14 6 0 0 %>90 0 0 0 0 0
%>85 57 53 38 9 1 %>85 1 0 0 2 0
%>80 94 90 84 45 12 %>80 11 1 10 22 4
%>75 100 99 99 86 42 %>75 45 30 56 70 44
%>70 100 100 100 99 79 %>70 85 88 94 97 92
NORFOLK_VA ORLANDO_FL
ORF 0821 0822 0823 0824 0825 ORL 0821 0822 0823 0824 0825
MEAN 79 77 78 80 78 MEAN 92 91 90 91 92
%>100 0 0 0 0 0 %>100 3 2 3 4 6
%>95 0 0 0 0 0 %>95 26 17 19 22 27
%>90 0 0 0 0 0 %>90 71 60 54 59 64
%>85 3 0 1 10 1 %>85 96 93 86 89 91
%>80 36 12 23 54 30 %>80 100 100 98 99 99
%>75 90 74 82 94 87 %>75 100 100 100 100 100
%>70 100 99 100 100 100 %>70 100 100 100 100 100
PHILADELPHIA_PA PITTSBURGH_PA
PHL 0821 0822 0823 0824 0825 PIT 0821 0822 0823 0824 0825
MEAN 75 74 76 77 73 MEAN 76 74 77 73 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 3 0 %>85 0 0 1 0 0
%>80 11 2 10 23 5 %>80 8 5 18 4 0
%>75 51 34 56 68 34 %>75 58 41 66 28 3
%>70 90 88 94 95 80 %>70 97 89 96 73 23
PORTLAND_ME PROVIDENCE_RI
PWM 0821 0822 0823 0824 0825 PVD 0821 0822 0823 0824 0825
MEAN 64 66 68 70 69 MEAN 67 67 70 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 0 0 0 0
%>80 0 0 0 1 0 %>80 0 0 1 4 2
%>75 0 0 4 9 4 %>75 1 1 11 30 18
%>70 2 7 31 48 36 %>70 18 21 51 78 63
RALEIGH-DURHAM_NC RICHMOND_VA
RDU 0821 0822 0823 0824 0825 RIC 0821 0822 0823 0824 0825
MEAN 80 78 77 79 77 MEAN 78 77 78 80 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 1 0 0 0 0 %>90 0 0 0 2 0
%>85 11 4 3 7 3 %>85 5 1 3 14 2
%>80 51 29 24 39 26 %>80 34 18 27 49 21
%>75 90 75 70 81 72 %>75 79 68 73 85 65
%>70 99 97 96 98 96 %>70 98 97 97 98 94
SAVANNAH_GA TALLAHASSEE_FL
SAV 0821 0822 0823 0824 0825 TLH 0821 0822 0823 0824 0825
MEAN 90 88 86 87 88 MEAN 92 91 88 88 89
%>100 3 1 0 1 0 %>100 4 3 1 1 0
%>95 17 10 3 6 5 %>95 26 19 10 7 6
%>90 50 36 21 29 30 %>90 68 56 36 33 36
%>85 84 72 58 67 73 %>85 94 88 71 73 81
%>80 98 93 89 92 96 %>80 100 99 93 95 98
%>75 100 99 99 99 100 %>75 100 100 99 100 100
%>70 100 100 100 100 100 %>70 100 100 100 100 100
TAMPA_FL WASHINGTON_DC
TPA 0821 0822 0823 0824 0825 DCA 0821 0822 0823 0824 0825
MEAN 94 93 92 92 93 MEAN 77 77 78 79 75
%>100 5 7 7 7 11 %>100 0 0 0 0 0
%>95 36 33 28 28 36 %>95 0 0 0 0 0
%>90 83 74 62 63 71 %>90 0 0 0 1 0
%>85 99 96 88 89 93 %>85 4 2 5 8 0
%>80 100 100 98 98 99 %>80 27 20 33 42 9
%>75 100 100 100 100 100 %>75 71 68 79 84 49
%>70 100 100 100 100 100 %>70 96 96 98 99 90
URL IS WWW.WPC.NCEP.NOAA.GOV
$$