


Heat Index Forecast Tables
Issued by NWS
Issued by NWS
302 FMUS23 KWNH 201609 PRBEHI DAYS 3--7 HEAT INDEX FORECAST TABLES NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 1607 UTC WED AUG 20 2025 MEAN HEAT INDEX (DEG F) AND MEAN HI PROB (%) FRCSTS AT EASTERN US CITIES - DAYS 3 TO 7 FROM WED AUG 20 2025 AKRON-CANTON_OH ALBANY_NY CAK 0823 0824 0825 0826 0827 ALB 0823 0824 0825 0826 0827 MEAN 73 70 62 60 61 MEAN 69 71 70 63 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 1 0 0 0 0 %>80 0 0 0 0 0 %>75 26 7 0 0 0 %>75 1 11 2 0 0 %>70 89 50 2 0 1 %>70 41 56 47 2 1 ASHEVILLE_NC ATLANTA_GA AVL 0823 0824 0825 0826 0827 ATL 0823 0824 0825 0826 0827 MEAN 71 71 68 63 63 MEAN 81 81 78 73 73 %>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 0 0 0 0 0 %>85 16 15 1 0 1 %>80 1 1 0 0 0 %>80 56 61 24 4 7 %>75 11 14 4 0 1 %>75 91 95 81 31 34 %>70 64 64 33 6 7 %>70 99 100 99 76 75 BALTIMORE_MD BIRMINGHAM_AL BWI 0823 0824 0825 0826 0827 BHM 0823 0824 0825 0826 0827 MEAN 74 78 75 69 68 MEAN 85 83 77 73 74 %>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 9 2 0 0 0 %>85 0 2 0 0 0 %>85 46 28 3 1 2 %>80 1 29 5 0 0 %>80 88 81 25 8 13 %>75 32 86 57 3 2 %>75 99 99 70 37 41 %>70 95 100 96 44 31 %>70 100 100 96 77 76 BOSTON_MA BUFFALO_NY BOS 0823 0824 0825 0826 0827 BUF 0823 0824 0825 0826 0827 MEAN 70 72 71 69 66 MEAN 72 70 64 60 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 5 14 13 4 0 %>75 11 3 0 0 0 %>70 48 73 66 41 8 %>70 79 57 1 0 0 CHARLESTON_SC CHARLESTON_WV CHS 0823 0824 0825 0826 0827 CRW 0823 0824 0825 0826 0827 MEAN 83 85 87 82 80 MEAN 80 76 68 64 65 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 1 2 0 0 %>95 0 0 0 0 0 %>90 6 11 21 2 2 %>90 0 0 0 0 0 %>85 33 48 71 23 17 %>85 5 0 0 0 0 %>80 76 87 97 70 53 %>80 47 13 0 0 0 %>75 97 99 100 96 86 %>75 93 64 3 0 1 %>70 100 100 100 100 98 %>70 100 97 28 7 10 CHARLOTTE_NC CHICAGO_IL CLT 0823 0824 0825 0826 0827 ORD 0823 0824 0825 0826 0827 MEAN 78 79 77 72 70 MEAN 74 65 62 62 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 3 6 1 0 0 %>85 0 0 0 0 0 %>80 31 42 20 1 1 %>80 2 0 0 0 0 %>75 82 87 74 18 13 %>75 38 0 0 0 1 %>70 99 99 98 66 49 %>70 93 5 1 1 12 CINCINNATI_OH CLEVELAND_OH LUK 0823 0824 0825 0826 0827 CLE 0823 0824 0825 0826 0827 MEAN 78 73 66 64 66 MEAN 74 71 64 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 22 3 0 0 0 %>80 0 0 0 0 0 %>75 88 31 1 0 2 %>75 33 5 0 0 1 %>70 100 83 13 5 17 %>70 96 60 2 1 6 COLUMBIA_SC COLUMBUS_OH CAE 0823 0824 0825 0826 0827 TZR 0823 0824 0825 0826 0827 MEAN 80 82 82 76 74 MEAN 75 71 63 61 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 2 0 0 0 %>90 0 0 0 0 0 %>85 9 21 13 1 1 %>85 0 0 0 0 0 %>80 51 68 74 14 10 %>80 2 0 0 0 0 %>75 92 96 99 61 40 %>75 50 12 0 0 0 %>70 100 100 100 95 78 %>70 97 60 3 0 3 DAYTON_OH DETROIT_MI MGY 0823 0824 0825 0826 0827 DET 0823 0824 0825 0826 0827 MEAN 76 71 64 62 64 MEAN 74 69 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 0 0 0 0 0 %>85 0 0 0 0 0 %>80 5 0 0 0 0 %>80 2 0 0 0 0 %>75 71 13 0 0 1 %>75 34 1 0 0 0 %>70 100 66 3 1 8 %>70 90 34 0 0 4 EVANSVILLE_IN GRAND_RAPIDS_MI EVV 0823 0824 0825 0826 0827 GRR 0823 0824 0825 0826 0827 MEAN 78 74 67 66 67 MEAN 71 64 60 59 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 23 5 0 0 0 %>80 0 0 0 0 0 %>75 89 36 1 1 5 %>75 8 0 0 0 0 %>70 100 83 20 14 28 %>70 66 2 0 0 2 GREENSBORO_NC HUNTSVILLE_AL GSO 0823 0824 0825 0826 0827 HSV 0823 0824 0825 0826 0827 MEAN 76 77 74 69 67 MEAN 83 82 75 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 4 0 0 0 0 %>85 0 1 0 0 0 %>85 33 15 1 0 2 %>80 11 18 7 0 0 %>80 82 71 12 4 9 %>75 60 70 44 6 5 %>75 99 98 47 21 30 %>70 96 98 88 36 26 %>70 100 100 85 57 62 INDIANAPOLIS_IN KNOXVILLE_TN IND 0823 0824 0825 0826 0827 TYS 0823 0824 0825 0826 0827 MEAN 75 69 62 62 64 MEAN 81 79 72 67 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 0 0 0 0 0 %>85 17 8 0 0 0 %>80 1 0 0 0 0 %>80 54 38 3 0 1 %>75 45 4 0 0 1 %>75 88 79 24 4 7 %>70 98 38 1 1 9 %>70 99 97 70 28 34 LEXINGTON_KY LOUISVILLE_KY LEX 0823 0824 0825 0826 0827 SDF 0823 0824 0825 0826 0827 MEAN 80 76 67 65 66 MEAN 80 76 68 66 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 3 0 0 0 0 %>85 6 0 0 0 0 %>80 47 9 0 0 0 %>80 48 8 0 0 0 %>75 96 60 2 1 2 %>75 94 57 2 1 5 %>70 100 97 24 11 21 %>70 100 95 25 13 29 MEMPHIS_TN MIAMI_FL MEM 0823 0824 0825 0826 0827 MIA 0823 0824 0825 0826 0827 MEAN 83 82 75 72 73 MEAN 94 95 95 95 94 %>100 0 0 0 0 0 %>100 9 18 16 17 10 %>95 0 0 0 0 0 %>95 40 50 48 51 43 %>90 1 1 0 0 0 %>90 81 85 85 86 84 %>85 26 19 1 1 3 %>85 98 98 99 99 99 %>80 85 78 11 8 14 %>80 100 100 100 100 100 %>75 100 99 54 30 38 %>75 100 100 100 100 100 %>70 100 100 92 65 69 %>70 100 100 100 100 100 MILWAUKEE_WI MOBILE_AL MKE 0823 0824 0825 0826 0827 MOB 0823 0824 0825 0826 0827 MEAN 71 63 61 61 64 MEAN 89 88 88 83 82 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 7 3 4 2 1 %>90 0 0 0 0 0 %>90 37 31 33 11 8 %>85 0 0 0 0 0 %>85 80 80 81 38 31 %>80 1 0 0 0 0 %>80 98 99 99 74 66 %>75 12 0 0 0 2 %>75 100 100 100 94 91 %>70 68 3 1 3 9 %>70 100 100 100 99 99 NASHVILLE_TN NEW_YORK_CITY_NY BNA 0823 0824 0825 0826 0827 NYC 0823 0824 0825 0826 0827 MEAN 83 80 72 69 70 MEAN 73 75 76 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 2 0 0 0 0 %>90 0 0 0 0 0 %>85 29 5 0 0 0 %>85 0 0 0 0 0 %>80 83 53 2 1 2 %>80 0 2 7 0 0 %>75 99 96 21 10 15 %>75 22 47 59 5 1 %>70 100 100 69 40 49 %>70 87 98 97 57 29 NORFOLK_VA ORLANDO_FL ORF 0823 0824 0825 0826 0827 ORL 0823 0824 0825 0826 0827 MEAN 75 79 80 74 73 MEAN 91 91 92 92 91 %>100 0 0 0 0 0 %>100 5 5 8 3 2 %>95 0 0 0 0 0 %>95 23 23 30 22 16 %>90 0 0 0 0 0 %>90 56 58 63 65 56 %>85 0 1 2 0 0 %>85 85 87 89 94 91 %>80 1 32 45 2 1 %>80 97 98 98 100 99 %>75 57 95 96 42 23 %>75 100 100 100 100 100 %>70 100 100 100 94 81 %>70 100 100 100 100 100 PHILADELPHIA_PA PITTSBURGH_PA PHL 0823 0824 0825 0826 0827 PIT 0823 0824 0825 0826 0827 MEAN 71 75 75 68 67 MEAN 74 73 65 61 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 3 4 0 0 %>80 3 1 0 0 0 %>75 7 54 50 2 0 %>75 43 25 0 0 0 %>70 73 98 96 30 13 %>70 93 87 8 0 1 PORTLAND_ME PROVIDENCE_RI PWM 0823 0824 0825 0826 0827 PVD 0823 0824 0825 0826 0827 MEAN 68 69 69 68 64 MEAN 70 71 72 69 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 1 2 1 0 0 %>75 4 4 14 4 0 %>70 21 31 30 19 2 %>70 48 65 74 38 7 RALEIGH-DURHAM_NC RICHMOND_VA RDU 0823 0824 0825 0826 0827 RIC 0823 0824 0825 0826 0827 MEAN 77 79 79 72 70 MEAN 75 79 77 71 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 0 0 0 0 0 %>85 1 5 2 0 0 %>85 0 2 2 0 0 %>80 19 39 32 1 1 %>80 4 33 23 0 0 %>75 69 86 87 18 11 %>75 51 86 74 11 8 %>70 97 99 100 74 49 %>70 97 100 98 59 40 SAVANNAH_GA TALLAHASSEE_FL SAV 0823 0824 0825 0826 0827 TLH 0823 0824 0825 0826 0827 MEAN 85 86 87 83 82 MEAN 89 87 88 85 84 %>100 0 0 0 0 0 %>100 1 0 0 0 0 %>95 1 2 2 0 1 %>95 10 4 2 2 1 %>90 12 16 22 6 7 %>90 39 26 28 15 11 %>85 47 56 74 32 29 %>85 79 68 83 50 42 %>80 85 90 98 75 65 %>80 97 95 99 85 80 %>75 98 99 100 96 91 %>75 100 100 100 98 97 %>70 100 100 100 100 99 %>70 100 100 100 100 100 TAMPA_FL WASHINGTON_DC TPA 0823 0824 0825 0826 0827 DCA 0823 0824 0825 0826 0827 MEAN 93 93 94 93 92 MEAN 74 79 75 69 68 %>100 18 14 16 8 5 %>100 0 0 0 0 0 %>95 41 38 41 37 26 %>95 0 0 0 0 0 %>90 69 69 71 77 66 %>90 0 0 0 0 0 %>85 89 90 91 96 93 %>85 0 4 0 0 0 %>80 97 98 98 100 99 %>80 1 36 7 0 0 %>75 100 100 100 100 100 %>75 35 87 53 3 2 %>70 100 100 100 100 100 %>70 94 100 95 40 28 URL IS WWW.WPC.NCEP.NOAA.GOV $$