


Heat Index Forecast Tables
Issued by NWS
Issued by NWS
427 FMUS23 KWNH 221609 PRBEHI DAYS 3--7 HEAT INDEX FORECAST TABLES NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 1607 UTC FRI AUG 22 2025 MEAN HEAT INDEX (DEG F) AND MEAN HI PROB (%) FRCSTS AT EASTERN US CITIES - DAYS 3 TO 7 FROM FRI AUG 22 2025 AKRON-CANTON_OH ALBANY_NY CAK 0825 0826 0827 0828 0829 ALB 0825 0826 0827 0828 0829 MEAN 62 59 60 63 65 MEAN 71 63 61 62 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 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 1 %>75 11 0 0 0 0 %>70 0 0 0 2 12 %>70 64 1 0 1 6 ASHEVILLE_NC ATLANTA_GA AVL 0825 0826 0827 0828 0829 ATL 0825 0826 0827 0828 0829 MEAN 69 64 62 63 65 MEAN 77 73 72 72 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 0 0 0 0 0 %>85 0 0 0 0 0 %>85 0 0 0 0 0 %>80 0 0 0 0 0 %>80 12 2 1 1 5 %>75 3 0 0 0 2 %>75 75 26 15 15 32 %>70 34 5 2 3 15 %>70 99 80 68 69 75 BALTIMORE_MD BIRMINGHAM_AL BWI 0825 0826 0827 0828 0829 BHM 0825 0826 0827 0828 0829 MEAN 76 70 67 68 72 MEAN 76 73 71 72 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 0 0 0 0 0 %>85 0 0 0 0 0 %>85 0 0 0 0 1 %>80 2 0 0 0 0 %>80 9 2 0 1 12 %>75 65 2 0 1 13 %>75 60 25 14 20 44 %>70 99 43 11 28 70 %>70 96 75 66 72 81 BOSTON_MA BUFFALO_NY BOS 0825 0826 0827 0828 0829 BUF 0825 0826 0827 0828 0829 MEAN 74 69 65 66 67 MEAN 64 60 60 63 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 0 0 0 %>85 0 0 0 0 0 %>80 5 0 0 0 0 %>80 0 0 0 0 0 %>75 39 1 0 0 3 %>75 0 0 0 0 1 %>70 89 35 3 8 26 %>70 0 0 0 3 10 CHARLESTON_SC CHARLESTON_WV CHS 0825 0826 0827 0828 0829 CRW 0825 0826 0827 0828 0829 MEAN 87 83 79 78 78 MEAN 68 64 63 65 69 %>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 16 2 0 0 0 %>90 0 0 0 0 0 %>85 71 28 6 2 3 %>85 0 0 0 0 0 %>80 98 79 37 26 31 %>80 0 0 0 0 0 %>75 100 99 80 77 80 %>75 1 0 0 0 6 %>70 100 100 98 98 98 %>70 24 3 3 5 36 CHARLOTTE_NC CHICAGO_IL CLT 0825 0826 0827 0828 0829 ORD 0825 0826 0827 0828 0829 MEAN 78 72 69 70 72 MEAN 61 62 64 68 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 0 0 0 0 0 %>85 0 0 0 0 0 %>80 19 0 0 0 3 %>80 0 0 0 0 1 %>75 88 17 2 6 21 %>75 0 0 0 7 10 %>70 100 79 38 50 64 %>70 0 0 3 36 42 CINCINNATI_OH CLEVELAND_OH LUK 0825 0826 0827 0828 0829 CLE 0825 0826 0827 0828 0829 MEAN 66 63 63 66 70 MEAN 64 61 62 65 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 0 0 %>85 0 0 0 0 0 %>80 0 0 0 0 2 %>80 0 0 0 0 0 %>75 0 0 0 1 15 %>75 0 0 0 0 1 %>70 8 2 2 15 49 %>70 1 0 0 8 17 COLUMBIA_SC COLUMBUS_OH CAE 0825 0826 0827 0828 0829 TZR 0825 0826 0827 0828 0829 MEAN 83 76 74 73 74 MEAN 63 61 61 64 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 19 0 0 0 0 %>85 0 0 0 0 0 %>80 86 11 5 2 5 %>80 0 0 0 0 0 %>75 100 68 35 27 36 %>75 0 0 0 0 5 %>70 100 98 82 80 82 %>70 2 0 0 5 30 DAYTON_OH DETROIT_MI MGY 0825 0826 0827 0828 0829 DET 0825 0826 0827 0828 0829 MEAN 64 61 62 65 69 MEAN 62 60 62 67 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 0 0 0 0 0 %>85 0 0 0 0 0 %>80 0 0 0 0 1 %>80 0 0 0 0 0 %>75 0 0 0 0 11 %>75 0 0 0 1 5 %>70 2 0 0 9 42 %>70 0 0 0 20 25 EVANSVILLE_IN GRAND_RAPIDS_MI EVV 0825 0826 0827 0828 0829 GRR 0825 0826 0827 0828 0829 MEAN 67 65 65 68 71 MEAN 59 58 60 65 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 0 1 %>85 0 0 0 0 0 %>80 0 0 0 0 6 %>80 0 0 0 0 0 %>75 1 0 0 3 26 %>75 0 0 0 1 4 %>70 19 5 8 28 60 %>70 0 0 0 14 22 GREENSBORO_NC HUNTSVILLE_AL GSO 0825 0826 0827 0828 0829 HSV 0825 0826 0827 0828 0829 MEAN 75 70 66 67 69 MEAN 73 71 69 71 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 0 0 0 0 0 %>85 0 0 0 0 0 %>85 0 0 0 0 1 %>80 3 0 0 0 0 %>80 6 3 1 1 10 %>75 56 4 1 1 8 %>75 34 22 9 15 37 %>70 99 45 15 19 43 %>70 76 61 44 55 74 INDIANAPOLIS_IN KNOXVILLE_TN IND 0825 0826 0827 0828 0829 TYS 0825 0826 0827 0828 0829 MEAN 63 61 62 65 69 MEAN 71 68 66 68 70 %>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 2 %>80 2 0 0 0 4 %>75 0 0 0 1 14 %>75 17 5 2 4 20 %>70 1 0 1 13 45 %>70 62 30 18 29 52 LEXINGTON_KY LOUISVILLE_KY LEX 0825 0826 0827 0828 0829 SDF 0825 0826 0827 0828 0829 MEAN 67 64 64 66 70 MEAN 67 65 65 67 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 1 %>80 0 0 0 0 2 %>80 0 0 0 0 6 %>75 1 0 0 0 15 %>75 1 0 0 2 26 %>70 17 3 2 14 50 %>70 19 5 6 22 59 MEMPHIS_TN MIAMI_FL MEM 0825 0826 0827 0828 0829 MIA 0825 0826 0827 0828 0829 MEAN 75 72 71 72 74 MEAN 94 95 94 93 92 %>100 0 0 0 0 0 %>100 11 14 15 11 11 %>95 0 0 0 0 0 %>95 43 46 45 35 33 %>90 0 0 0 0 0 %>90 82 83 78 69 64 %>85 0 0 0 0 3 %>85 98 98 96 91 88 %>80 9 5 1 5 15 %>80 100 100 100 99 98 %>75 48 28 14 26 44 %>75 100 100 100 100 100 %>70 89 66 60 64 76 %>70 100 100 100 100 100 MILWAUKEE_WI MOBILE_AL MKE 0825 0826 0827 0828 0829 MOB 0825 0826 0827 0828 0829 MEAN 60 61 64 67 67 MEAN 88 83 81 80 82 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 2 2 0 0 0 %>90 0 0 0 0 0 %>90 24 12 3 1 4 %>85 0 0 0 0 0 %>85 76 39 20 14 24 %>80 0 0 0 0 0 %>80 98 74 57 54 64 %>75 0 0 0 4 5 %>75 100 94 88 90 92 %>70 1 1 4 24 27 %>70 100 99 98 99 99 NASHVILLE_TN NEW_YORK_CITY_NY BNA 0825 0826 0827 0828 0829 NYC 0825 0826 0827 0828 0829 MEAN 71 70 68 69 72 MEAN 77 71 68 68 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 1 %>85 0 0 0 0 0 %>80 1 1 0 0 7 %>80 8 0 0 0 0 %>75 15 11 2 7 30 %>75 75 4 0 1 10 %>70 63 47 26 41 66 %>70 100 63 15 29 61 NORFOLK_VA ORLANDO_FL ORF 0825 0826 0827 0828 0829 ORL 0825 0826 0827 0828 0829 MEAN 81 75 73 72 74 MEAN 90 91 89 88 88 %>100 0 0 0 0 0 %>100 1 2 0 0 1 %>95 0 0 0 0 0 %>95 12 16 6 5 10 %>90 0 0 0 0 0 %>90 48 56 39 31 36 %>85 4 0 0 0 0 %>85 86 91 85 74 72 %>80 59 3 0 0 1 %>80 99 99 99 96 93 %>75 99 56 18 16 35 %>75 100 100 100 100 99 %>70 100 98 87 83 93 %>70 100 100 100 100 100 PHILADELPHIA_PA PITTSBURGH_PA PHL 0825 0826 0827 0828 0829 PIT 0825 0826 0827 0828 0829 MEAN 76 69 66 67 70 MEAN 65 61 61 63 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 0 0 %>85 0 0 0 0 0 %>80 2 0 0 0 0 %>80 0 0 0 0 0 %>75 65 1 0 0 8 %>75 0 0 0 0 1 %>70 100 30 6 15 52 %>70 5 0 0 2 14 PORTLAND_ME PROVIDENCE_RI PWM 0825 0826 0827 0828 0829 PVD 0825 0826 0827 0828 0829 MEAN 70 68 64 64 64 MEAN 74 69 65 65 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 0 0 0 0 0 %>85 0 0 0 0 0 %>80 0 0 0 0 0 %>80 2 0 0 0 0 %>75 1 0 0 0 0 %>75 36 2 0 0 3 %>70 42 17 0 1 8 %>70 94 33 5 6 26 RALEIGH-DURHAM_NC RICHMOND_VA RDU 0825 0826 0827 0828 0829 RIC 0825 0826 0827 0828 0829 MEAN 79 73 69 70 71 MEAN 78 71 69 69 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 1 0 0 0 0 %>85 0 0 0 0 0 %>80 30 1 0 0 1 %>80 17 0 0 0 0 %>75 92 22 3 2 15 %>75 86 8 1 1 12 %>70 100 84 41 45 63 %>70 100 69 32 34 63 SAVANNAH_GA TALLAHASSEE_FL SAV 0825 0826 0827 0828 0829 TLH 0825 0826 0827 0828 0829 MEAN 87 83 80 79 79 MEAN 88 83 81 82 82 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 1 0 0 0 0 %>95 2 1 0 0 0 %>90 21 4 1 0 1 %>90 30 7 1 2 4 %>85 77 34 12 5 9 %>85 86 36 16 21 25 %>80 99 82 50 37 43 %>80 100 76 59 70 67 %>75 100 99 88 84 84 %>75 100 96 93 97 94 %>70 100 100 99 99 98 %>70 100 100 100 100 100 TAMPA_FL WASHINGTON_DC TPA 0825 0826 0827 0828 0829 DCA 0825 0826 0827 0828 0829 MEAN 92 93 90 89 89 MEAN 76 69 67 68 71 %>100 8 5 1 2 2 %>100 0 0 0 0 0 %>95 29 29 13 14 13 %>95 0 0 0 0 0 %>90 62 72 49 44 40 %>90 0 0 0 0 0 %>85 88 96 86 79 73 %>85 0 0 0 0 0 %>80 98 100 99 96 93 %>80 2 0 0 0 0 %>75 100 100 100 100 99 %>75 62 1 0 1 13 %>70 100 100 100 100 100 %>70 99 42 12 26 64 URL IS WWW.WPC.NCEP.NOAA.GOV $$