FMUS23 KWNH 210654 PRBEHI DAYS 3--7 HEAT INDEX FORECAST TABLES NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 0652 UTC SUN JUN 21 2026 MEAN HEAT INDEX (DEG F) AND MEAN HI PROB (%) FRCSTS AT EASTERN US CITIES - DAYS 3 TO 7 FROM SUN JUN 21 2026 AKRON-CANTON_OH ALBANY_NY CAK 0624 0625 0626 0627 0628 ALB 0624 0625 0626 0627 0628 MEAN 66 69 70 71 74 MEAN 69 70 70 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 0 0 0 0 0 %>85 0 0 0 0 3 %>85 0 0 0 0 1 %>80 0 0 0 1 17 %>80 0 4 2 3 6 %>75 0 6 4 16 46 %>75 7 19 14 20 26 %>70 10 42 46 57 77 %>70 38 53 51 58 61 ASHEVILLE_NC ATLANTA_GA AVL 0624 0625 0626 0627 0628 ATL 0624 0625 0626 0627 0628 MEAN 72 73 74 75 77 MEAN 81 82 83 84 86 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 1 %>90 0 0 0 0 0 %>90 1 2 2 7 16 %>85 0 0 0 1 3 %>85 12 19 26 42 60 %>80 1 5 6 10 22 %>80 56 65 78 87 94 %>75 18 32 38 48 69 %>75 93 95 98 99 100 %>70 67 78 84 88 96 %>70 100 100 100 100 100 BALTIMORE_MD BIRMINGHAM_AL BWI 0624 0625 0626 0627 0628 BHM 0624 0625 0626 0627 0628 MEAN 74 78 79 79 79 MEAN 82 82 84 86 88 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 1 2 5 %>90 0 0 1 1 2 %>90 3 4 8 17 29 %>85 0 3 9 11 12 %>85 22 24 40 56 72 %>80 2 25 43 43 40 %>80 63 65 81 90 96 %>75 35 75 86 82 75 %>75 93 93 98 99 100 %>70 95 98 99 98 95 %>70 99 100 100 100 100 BOSTON_MA BUFFALO_NY BOS 0624 0625 0626 0627 0628 BUF 0624 0625 0626 0627 0628 MEAN 71 73 72 76 74 MEAN 65 67 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 1 0 %>90 0 0 0 0 0 %>85 0 0 1 5 3 %>85 0 0 0 0 0 %>80 2 6 7 21 14 %>80 0 0 0 0 3 %>75 18 29 28 52 43 %>75 0 1 2 3 18 %>70 60 68 64 84 78 %>70 3 21 28 27 55 CHARLESTON_SC CHARLESTON_WV CHS 0624 0625 0626 0627 0628 CRW 0624 0625 0626 0627 0628 MEAN 89 89 91 93 94 MEAN 71 75 76 77 79 %>100 3 4 4 11 14 %>100 0 0 0 0 0 %>95 14 17 20 36 41 %>95 0 0 0 0 0 %>90 42 44 54 71 76 %>90 0 0 0 1 2 %>85 77 74 86 93 95 %>85 0 2 2 6 13 %>80 95 93 98 99 99 %>80 1 14 17 26 41 %>75 99 99 100 100 100 %>75 15 48 58 61 75 %>70 100 100 100 100 100 %>70 59 84 92 89 94 CHARLOTTE_NC CHICAGO_IL CLT 0624 0625 0626 0627 0628 ORD 0624 0625 0626 0627 0628 MEAN 79 82 83 85 86 MEAN 68 68 68 72 80 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 1 %>95 0 0 0 0 2 %>90 0 2 3 8 16 %>90 0 0 0 0 8 %>85 3 21 31 46 61 %>85 0 0 0 0 24 %>80 39 66 80 89 94 %>80 0 0 0 5 50%>75 90 95 99 99 100 %>75 5 3 4 26 76 %>70 100 100 100 100 100 %>70 34 31 33 66 92 CINCINNATI_OH CLEVELAND_OH LUK 0624 0625 0626 0627 0628 CLE 0624 0625 0626 0627 0628 MEAN 70 73 74 76 81 MEAN 68 71 71 72 77 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 1 %>95 0 0 0 0 0 %>90 0 0 0 0 7 %>90 0 0 0 0 2 %>85 0 0 0 3 26 %>85 0 0 0 1 10 %>80 0 3 4 19 56 %>80 0 2 1 6 29 %>75 6 32 35 54 84 %>75 4 15 13 28 59 %>70 56 82 85 86 96 %>70 32 59 58 68 85 COLUMBIA_SC COLUMBUS_OH CAE 0624 0625 0626 0627 0628 TZR 0624 0625 0626 0627 0628 MEAN 84 86 87 89 90 MEAN 68 72 72 74 79 %>100 0 0 0 0 1 %>100 0 0 0 0 0 %>95 0 2 2 5 11 %>95 0 0 0 0 0 %>90 7 16 22 35 49 %>90 0 0 0 0 3 %>85 40 54 67 82 88 %>85 0 0 0 1 14 %>80 84 89 95 99 99 %>80 0 1 2 8 41 %>75 99 99 100 100 100 %>75 2 19 23 38 73 %>70 100 100 100 100 100 %>70 29 70 74 78 92 DAYTON_OH DETROIT_MI MGY 0624 0625 0626 0627 0628 DET 0624 0625 0626 0627 0628 MEAN 69 72 72 74 80 MEAN 67 69 69 71 75 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 1 %>95 0 0 0 0 0 %>90 0 0 0 0 5 %>90 0 0 0 0 1 %>85 0 0 0 2 20 %>85 0 0 0 0 4 %>80 0 1 2 13 49 %>80 0 0 0 1 20 %>75 2 22 24 44 78 %>75 1 3 3 17 51 %>70 41 74 74 80 94 %>70 17 39 43 61 81 EVANSVILLE_IN GRAND_RAPIDS_MI EVV 0624 0625 0626 0627 0628 GRR 0624 0625 0626 0627 0628 MEAN 74 76 76 80 86 MEAN 65 67 66 69 76 %>100 0 0 0 0 1 %>100 0 0 0 0 0 %>95 0 0 0 1 5 %>95 0 0 0 0 0 %>90 0 0 0 5 22 %>90 0 0 0 0 1 %>85 0 0 1 21 54 %>85 0 0 0 0 7 %>80 3 11 17 52 83 %>80 0 0 0 1 25 %>75 41 62 62 82 97 %>75 0 1 0 9 53 %>70 92 97 94 96 100 %>70 6 15 13 42 80 GREENSBORO_NC HUNTSVILLE_AL GSO 0624 0625 0626 0627 0628 HSV 0624 0625 0626 0627 0628 MEAN 76 80 81 82 84 MEAN 79 80 82 84 87 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 1 3 %>90 0 1 1 2 7 %>90 1 1 3 10 21 %>85 0 11 14 23 38 %>85 8 14 24 42 64 %>80 11 46 59 70 81 %>80 43 52 68 83 93 %>75 67 84 93 96 98 %>75 85 88 95 98 100 %>70 98 98 100 100 100 %>70 99 99 100 100 100 INDIANAPOLIS_IN KNOXVILLE_TN IND 0624 0625 0626 0627 0628 TYS 0624 0625 0626 0627 0628 MEAN 69 71 71 74 80 MEAN 76 78 79 81 83 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 1 %>95 0 0 0 0 1 %>90 0 0 0 0 5 %>90 0 1 1 4 9 %>85 0 0 0 1 21 %>85 2 9 12 20 36 %>80 0 0 0 11 51 %>80 17 37 45 54 73 %>75 1 7 12 41 81 %>75 58 75 83 85 94 %>70 33 60 61 78 96 %>70 92 95 98 98 99LEXINGTON_KY LOUISVILLE_KY LEX 0624 0625 0626 0627 0628 SDF 0624 0625 0626 0627 0628 MEAN 71 74 75 77 81 MEAN 73 76 76 79 84 %>100 0 0 0 0 0 %>100 0 0 0 0 1 %>95 0 0 0 0 1 %>95 0 0 0 0 5 %>90 0 0 0 0 6 %>90 0 0 0 3 19 %>85 0 0 0 5 26 %>85 0 1 1 14 46 %>80 0 5 7 26 60 %>80 1 12 16 43 75 %>75 7 40 47 65 87 %>75 27 57 61 76 93 %>70 63 87 91 92 98 %>70 84 94 94 95 99 MEMPHIS_TN MIAMI_FL MEM 0624 0625 0626 0627 0628 MIA 0624 0625 0626 0627 0628 MEAN 81 82 85 88 91 MEAN 94 94 95 96 94 %>100 0 0 0 3 6 %>100 12 11 19 24 13 %>95 0 1 4 13 25 %>95 40 39 52 58 44 %>90 4 6 18 38 58 %>90 78 78 85 87 81 %>85 22 30 49 71 86 %>85 96 97 98 98 97 %>80 60 68 80 92 97 %>80 100 100 100 100 100 %>75 90 93 96 99 100 %>75 100 100 100 100 100 %>70 99 99 100 100 100 %>70 100 100 100 100 100 MILWAUKEE_WI MOBILE_AL MKE 0624 0625 0626 0627 0628 MOB 0624 0625 0626 0627 0628 MEAN 64 64 64 66 73 MEAN 90 89 90 91 92 %>100 0 0 0 0 0 %>100 5 4 2 2 4 %>95 0 0 0 0 0 %>95 20 17 14 18 25 %>90 0 0 0 0 0 %>90 50 46 49 61 68 %>85 0 0 0 0 3 %>85 79 78 85 93 94 %>80 0 0 0 0 11 %>80 95 95 98 100 100 %>75 0 0 0 1 33 %>75 99 99 100 100 100 %>70 2 2 2 16 66 %>70 100 100 100 100 100 NASHVILLE_TN NEW_YORK_CITY_NY BNA 0624 0625 0626 0627 0628 NYC 0624 0625 0626 0627 0628 MEAN 77 80 81 84 87 MEAN 74 75 75 77 77 %>100 0 0 0 0 1 %>100 0 0 0 0 0 %>95 0 0 0 2 6 %>95 0 0 0 0 0 %>90 0 1 3 13 29 %>90 0 0 0 0 0 %>85 2 10 18 42 69 %>85 0 1 1 5 5 %>80 23 46 57 77 94 %>80 4 9 13 27 24 %>75 72 87 90 95 100 %>75 34 46 49 67 62 %>70 97 99 99 100 100 %>70 84 88 87 94 91 NORFOLK_VA ORLANDO_FL ORF 0624 0625 0626 0627 0628 ORL 0624 0625 0626 0627 0628 MEAN 78 80 84 85 86 MEAN 92 92 92 93 93 %>100 0 0 0 1 3 %>100 7 7 6 6 5 %>95 0 0 3 5 10 %>95 30 30 30 31 30 %>90 0 1 13 19 28 %>90 67 67 70 73 71 %>85 3 10 40 49 56 %>85 92 92 94 96 95 %>80 27 44 77 82 82 %>80 99 99 100 100 100 %>75 82 88 96 97 95 %>75 100 100 100 100 100 %>70 99 99 100 100 99 %>70 100 100 100 100 100 PHILADELPHIA_PA PITTSBURGH_PA PHL 0624 0625 0626 0627 0628 PIT 0624 0625 0626 0627 0628 MEAN 73 75 76 77 77 MEAN 67 71 72 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 1 %>90 0 0 0 0 0 %>85 0 0 1 2 6 %>85 0 0 0 0 3 %>80 0 6 18 22 27 %>80 0 1 1 3 16 %>75 22 51 64 69 63 %>75 0 11 18 22 45 %>70 88 94 95 96 90 %>70 13 56 69 63 77 PORTLAND_ME PROVIDENCE_RI PWM 0624 0625 0626 0627 0628 PVD 0624 0625 0626 0627 0628 MEAN 68 67 65 70 70 MEAN 72 72 71 75 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 0 0 0 0 0 %>85 0 0 0 0 0 %>85 0 0 0 3 2 %>80 0 0 0 4 3 %>80 1 2 2 16 14 %>75 7 4 1 18 18 %>75 20 22 17 52 47 %>70 36 25 12 50 51 %>70 70 69 61 86 82 RALEIGH-DURHAM_NC RICHMOND_VA RDU 0624 0625 0626 0627 0628 RIC 0624 0625 0626 0627 0628 MEAN 80 82 85 87 88 MEAN 76 79 82 83 84 %>100 0 0 0 0 1 %>100 0 0 0 0 0 %>95 0 0 1 4 8 %>95 0 0 0 0 3 %>90 0 4 12 24 33 %>90 0 0 4 6 15 %>85 7 27 48 64 70 %>85 0 5 25 32 44 %>80 53 71 86 92 94 %>80 9 38 68 73 76 %>75 95 96 99 99 99 %>75 68 85 94 96 94 %>70 100 100 100 100 100 %>70 99 99 100 100 99 SAVANNAH_GA TALLAHASSEE_FL SAV 0624 0625 0626 0627 0628 TLH 0624 0625 0626 0627 0628 MEAN 90 89 90 92 93 MEAN 91 90 91 92 93 %>100 3 2 3 7 9 %>100 8 5 6 10 13 %>95 16 14 16 27 33 %>95 27 21 25 32 37 %>90 46 43 51 63 71 %>90 58 51 59 65 69 %>85 80 78 86 91 94 %>85 85 81 87 89 91 %>80 96 96 98 99 99 %>80 97 96 98 98 98 %>75 100 100 100 100 100 %>75 100 99 100 100 100 %>70 100 100 100 100 100 %>70 100 100 100 100 100 TAMPA_FL WASHINGTON_DC TPA 0624 0625 0626 0627 0628 DCA 0624 0625 0626 0627 0628 MEAN 94 94 94 95 95 MEAN 74 77 79 79 79 %>100 6 6 7 11 17 %>100 0 0 0 0 0 %>95 39 36 40 46 51 %>95 0 0 0 0 0 %>90 86 82 83 86 85 %>90 0 0 0 1 3 %>85 99 98 99 99 98 %>85 0 2 7 8 15 %>80 100 100 100 100 100 %>80 1 24 44 42 43 %>75 100 100 100 100 100 %>75 34 74 87 84 76 %>70 100 100 100 100 100 %>70 96 98 99 98 94 URL IS WWW.WPC.NCEP.NOAA.GOV $$