Heat Index Forecast Tables
Issued by NWS
Issued by NWS
002
FMUS23 KWNH 180654
PRBEHI
DAYS 3--7 HEAT INDEX FORECAST TABLES
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
0653 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 7 2 7 3 0 %>80 0 0 4 5 0
%>75 51 31 51 16 3 %>75 7 5 24 28 4
%>70 94 83 94 48 17 %>70 37 35 65 68 32
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 4 2 1 0
%>85 1 0 0 0 0 %>85 58 29 16 15 6
%>80 9 3 1 1 1 %>80 97 74 57 61 40
%>75 51 22 15 17 11 %>75 100 97 91 95 85
%>70 91 67 61 63 42 %>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 1 1 0 0 0
%>90 0 0 0 0 0 %>90 20 10 4 2 1
%>85 1 1 4 8 1 %>85 74 47 33 22 10
%>80 21 15 31 43 13 %>80 98 87 80 73 39
%>75 73 67 80 86 49 %>75 100 99 98 98 76
%>70 98 97 99 99 85 %>70 100 100 100 100 96
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 1 0 %>85 0 0 0 0 0
%>80 0 0 3 8 1 %>80 0 0 5 1 0
%>75 0 1 18 35 17 %>75 8 6 45 11 1
%>70 9 17 58 76 62 %>70 49 49 92 48 9
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 0 0 0 0 0 %>100 0 0 0 0 0
%>95 5 2 1 3 3 %>95 0 0 0 0 0
%>90 33 16 10 20 22 %>90 1 1 2 0 0
%>85 78 57 48 59 64 %>85 13 10 15 2 1
%>80 98 91 88 91 94 %>80 53 49 55 16 5
%>75 100 99 99 99 100 %>75 90 89 90 55 21
%>70 100 100 100 100 100 %>70 99 99 99 89 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 3 1 0 0 0 %>90 0 0 0 0 0
%>85 29 12 3 7 4 %>85 0 1 1 0 0
%>80 77 47 23 43 26 %>80 4 8 7 0 0
%>75 98 85 64 87 68 %>75 33 53 47 3 2
%>70 100 98 92 99 94 %>70 83 95 91 24 17
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 1 0 0 0 0 %>90 0 0 0 0 0
%>85 11 7 3 2 0 %>85 0 0 0 0 0
%>80 44 39 39 12 3 %>80 6 4 10 2 0
%>75 82 83 90 38 14 %>75 42 34 61 16 3
%>70 98 99 100 72 41 %>70 87 81 97 54 20
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 1 1 0 0 0 %>95 0 0 0 0 0
%>90 17 7 1 4 2 %>90 0 0 0 0 0
%>85 63 36 14 28 22 %>85 2 0 1 1 0
%>80 95 78 58 72 71 %>80 22 10 16 6 1
%>75 100 97 93 96 97 %>75 70 55 70 24 6
%>70 100 100 100 100 100 %>70 97 94 98 56 25
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 1 0 0 0 0 %>90 0 0 0 0 0
%>85 7 3 1 1 0 %>85 0 0 0 0 0
%>80 33 26 24 6 1 %>80 3 6 11 1 0
%>75 73 70 80 25 7 %>75 35 39 57 10 1
%>70 95 96 99 60 28 %>70 85 85 94 45 14
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 1 1 0 0 0 %>90 0 0 0 0 0
%>85 14 14 6 3 1 %>85 0 0 0 0 0
%>80 56 56 49 15 7 %>80 0 0 2 0 0
%>75 92 91 94 43 23 %>75 11 17 26 3 0
%>70 100 100 100 76 52 %>70 67 77 77 20 4
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 15 5 5 1 2
%>85 7 2 2 3 2 %>85 64 36 34 16 8
%>80 41 20 13 24 14 %>80 96 83 80 62 28
%>75 85 63 45 68 45 %>75 100 99 98 95 57
%>70 99 93 81 95 80 %>70 100 100 100 100 83
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 6 5 3 0 0
%>85 3 1 0 0 0 %>85 34 27 18 4 3
%>80 20 17 9 3 1 %>80 78 64 54 33 14
%>75 62 60 57 17 5 %>75 98 91 87 81 42
%>70 93 93 95 49 24 %>70 100 99 98 99 76
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 2 1 0 0 0 %>90 4 3 0 0 0
%>85 19 14 8 3 1 %>85 25 22 13 3 1
%>80 61 57 60 17 5 %>80 64 63 65 18 6
%>75 92 93 97 52 20 %>75 92 93 97 53 24
%>70 100 100 100 86 49 %>70 99 100 100 85 55
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 15 12 17 11
%>95 4 1 1 0 0 %>95 51 47 40 46 38
%>90 26 16 12 1 2 %>90 88 85 76 80 76
%>85 67 59 57 19 11 %>85 99 98 96 96 96
%>80 94 93 94 66 33 %>80 100 100 100 100 100
%>75 100 100 100 95 65 %>75 100 100 100 100 100
%>70 100 100 100 100 88 %>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 0 0 0 0 0
%>95 0 0 0 0 0 %>95 12 5 5 5 4
%>90 0 0 0 0 0 %>90 60 35 29 31 28
%>85 0 0 0 0 0 %>85 96 80 70 75 71
%>80 1 3 3 0 0 %>80 100 98 95 97 96
%>75 9 25 23 2 1 %>75 100 100 100 100 100
%>70 61 85 66 14 10 %>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 2 0 0 0 %>95 0 0 0 0 0
%>90 12 16 3 1 1 %>90 0 0 0 0 0
%>85 57 52 36 10 4 %>85 0 0 1 3 0
%>80 94 87 87 45 17 %>80 5 2 12 24 5
%>75 100 99 100 85 44 %>75 44 31 55 68 44
%>70 100 100 100 98 74 %>70 91 87 93 95 90
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 2 1 3 6 8
%>95 0 0 0 0 0 %>95 25 16 18 25 29
%>90 0 0 0 0 0 %>90 73 60 54 58 63
%>85 3 0 1 8 3 %>85 97 94 87 87 89
%>80 38 11 24 54 32 %>80 100 100 98 98 98
%>75 88 75 81 95 84 %>75 100 100 100 100 100
%>70 100 100 99 100 99 %>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 0 0 0 4 1 %>85 0 0 1 0 0
%>80 7 2 11 25 7 %>80 10 7 15 5 1
%>75 51 34 55 67 36 %>75 57 42 67 30 6
%>70 93 89 93 94 76 %>70 95 85 97 72 26
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 6 1
%>75 0 0 3 10 4 %>75 2 1 11 33 18
%>70 3 7 31 47 36 %>70 22 22 51 75 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 0 0 0 0 0 %>90 0 0 0 1 0
%>85 7 2 3 6 5 %>85 4 2 3 13 5
%>80 51 27 25 38 28 %>80 33 20 27 49 25
%>75 93 78 69 82 70 %>75 81 67 73 86 63
%>70 100 98 95 98 94 %>70 99 95 97 98 90
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 2 1 0 1 0 %>100 4 2 1 1 1
%>95 14 8 3 6 5 %>95 25 18 8 8 7
%>90 50 35 20 29 30 %>90 68 57 34 34 37
%>85 87 74 58 67 72 %>85 95 89 73 72 79
%>80 99 95 89 93 96 %>80 100 99 95 94 97
%>75 100 100 99 99 100 %>75 100 100 100 99 100
%>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 6 6 7 9 13 %>100 0 0 0 0 0
%>95 36 32 27 29 38 %>95 0 0 0 0 0
%>90 81 75 62 61 69 %>90 0 0 0 1 0
%>85 98 96 89 87 90 %>85 2 1 5 9 2
%>80 100 100 98 97 98 %>80 23 19 33 43 16
%>75 100 100 100 100 100 %>75 75 69 80 83 49
%>70 100 100 100 100 100 %>70 98 97 98 98 83
URL IS WWW.WPC.NCEP.NOAA.GOV
$$