


Heat Index Forecast Tables
Issued by NWS
Issued by NWS
019 FMUS23 KWNH 231609 PRBEHI DAYS 3--7 HEAT INDEX FORECAST TABLES NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 1607 UTC SAT AUG 23 2025 MEAN HEAT INDEX (DEG F) AND MEAN HI PROB (%) FRCSTS AT EASTERN US CITIES - DAYS 3 TO 7 FROM SAT AUG 23 2025 AKRON-CANTON_OH ALBANY_NY CAK 0826 0827 0828 0829 0830 ALB 0826 0827 0828 0829 0830 MEAN 58 59 61 64 64 MEAN 62 60 62 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 0 0 0 0 0 %>80 0 0 0 0 0 %>75 0 0 0 0 2 %>75 0 0 0 0 1 %>70 0 0 0 6 13 %>70 0 0 0 4 8 ASHEVILLE_NC ATLANTA_GA AVL 0826 0827 0828 0829 0830 ATL 0826 0827 0828 0829 0830 MEAN 63 61 62 64 64 MEAN 70 71 71 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 0 %>85 0 0 0 0 0 %>80 0 0 0 0 0 %>80 0 0 0 3 3 %>75 0 0 0 1 1 %>75 7 7 7 21 24 %>70 3 2 1 10 11 %>70 57 61 63 61 66 BALTIMORE_MD BIRMINGHAM_AL BWI 0826 0827 0828 0829 0830 BHM 0826 0827 0828 0829 0830 MEAN 69 66 68 70 70 MEAN 70 70 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 1 1 %>80 0 0 0 0 1 %>80 1 0 1 7 10 %>75 0 0 0 7 12 %>75 10 7 14 30 39 %>70 32 6 18 52 52 %>70 49 53 62 68 77 BOSTON_MA BUFFALO_NY BOS 0826 0827 0828 0829 0830 BUF 0826 0827 0828 0829 0830 MEAN 69 65 66 67 66 MEAN 58 59 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 0 0 0 0 0 %>80 0 0 0 0 0 %>75 0 0 0 1 2 %>75 0 0 0 0 2 %>70 28 1 4 19 16 %>70 0 0 1 6 12 CHARLESTON_SC CHARLESTON_WV CHS 0826 0827 0828 0829 0830 CRW 0826 0827 0828 0829 0830 MEAN 81 78 77 76 77 MEAN 63 61 63 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 13 2 0 1 2 %>85 0 0 0 0 0 %>80 67 25 11 17 26 %>80 0 0 0 0 0 %>75 98 76 70 63 74 %>75 0 0 0 2 7 %>70 100 98 99 95 97 %>70 1 0 2 18 36 CHARLOTTE_NC CHICAGO_IL CLT 0826 0827 0828 0829 0830 ORD 0826 0827 0828 0829 0830 MEAN 71 69 68 70 71 MEAN 61 63 67 68 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 0 0 0 1 2 %>80 0 0 0 0 1 %>75 7 2 2 14 18 %>75 0 0 2 5 8 %>70 66 35 28 54 62 %>70 0 1 25 32 34 CINCINNATI_OH CLEVELAND_OH LUK 0826 0827 0828 0829 0830 CLE 0826 0827 0828 0829 0830 MEAN 62 62 65 68 69 MEAN 61 61 64 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 1 %>80 0 0 0 0 0 %>75 0 0 0 6 8 %>75 0 0 0 0 2 %>70 0 0 7 31 39 %>70 0 0 2 8 17 COLUMBIA_SC COLUMBUS_OH CAE 0826 0827 0828 0829 0830 TZR 0826 0827 0828 0829 0830 MEAN 75 73 72 73 74 MEAN 59 60 63 66 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 4 2 1 4 7 %>80 0 0 0 0 0 %>75 48 26 17 29 38 %>75 0 0 0 1 3 %>70 94 78 67 73 82 %>70 0 0 2 13 20 DAYTON_OH DETROIT_MI MGY 0826 0827 0828 0829 0830 DET 0826 0827 0828 0829 0830 MEAN 60 60 64 67 67 MEAN 59 62 65 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 0 %>80 0 0 0 0 0 %>75 0 0 0 2 4 %>75 0 0 0 1 5 %>70 0 0 2 21 26 %>70 0 0 5 15 24 EVANSVILLE_IN GRAND_RAPIDS_MI EVV 0826 0827 0828 0829 0830 GRR 0826 0827 0828 0829 0830 MEAN 64 64 66 69 70 MEAN 57 60 64 64 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 1 2 %>80 0 0 0 0 0 %>75 0 0 1 10 17 %>75 0 0 0 1 3 %>70 3 2 15 42 53 %>70 0 0 3 10 16 GREENSBORO_NC HUNTSVILLE_AL GSO 0826 0827 0828 0829 0830 HSV 0826 0827 0828 0829 0830 MEAN 68 66 65 68 69 MEAN 69 68 69 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 0 %>85 0 0 0 1 1 %>80 0 0 0 0 1 %>80 1 0 1 5 7 %>75 1 1 0 6 8 %>75 10 5 9 24 30 %>70 29 14 11 32 40 %>70 45 33 43 59 67 INDIANAPOLIS_IN KNOXVILLE_TN IND 0826 0827 0828 0829 0830 TYS 0826 0827 0828 0829 0830 MEAN 60 60 64 67 68 MEAN 67 65 66 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 0 0 0 0 0 %>85 0 0 0 0 0 %>80 0 0 0 0 1 %>80 0 0 0 2 3 %>75 0 0 0 4 7 %>75 2 1 1 12 20 %>70 0 0 4 25 31 %>70 24 10 16 43 57 LEXINGTON_KY LOUISVILLE_KY LEX 0826 0827 0828 0829 0830 SDF 0826 0827 0828 0829 0830 MEAN 63 63 65 68 70 MEAN 64 63 66 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 0 0 0 0 0 %>85 0 0 0 0 0 %>80 0 0 0 0 1 %>80 0 0 0 1 3 %>75 0 0 0 6 13 %>75 0 0 0 10 18 %>70 1 0 6 33 48 %>70 2 1 11 40 54 MEMPHIS_TN MIAMI_FL MEM 0826 0827 0828 0829 0830 MIA 0826 0827 0828 0829 0830 MEAN 70 69 70 70 74 MEAN 94 93 91 92 91 %>100 0 0 0 0 0 %>100 8 6 3 6 6 %>95 0 0 0 0 0 %>95 39 34 19 28 25 %>90 0 0 0 0 0 %>90 81 76 59 67 60 %>85 0 0 0 1 2 %>85 98 97 91 93 89 %>80 2 0 2 5 13 %>80 100 100 99 99 98 %>75 15 4 15 21 44 %>75 100 100 100 100 100 %>70 50 44 52 50 80 %>70 100 100 100 100 100 MILWAUKEE_WI MOBILE_AL MKE 0826 0827 0828 0829 0830 MOB 0826 0827 0828 0829 0830 MEAN 60 63 67 66 67 MEAN 82 78 80 81 81 %>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 1 1 4 4 %>85 0 0 0 0 0 %>85 23 7 12 22 24 %>80 0 0 0 0 0 %>80 63 35 49 59 61 %>75 0 0 2 2 5 %>75 92 77 87 89 90 %>70 1 3 17 17 25 %>70 99 97 99 99 99 NASHVILLE_TN NEW_YORK_CITY_NY BNA 0826 0827 0828 0829 0830 NYC 0826 0827 0828 0829 0830 MEAN 69 66 68 70 72 MEAN 70 67 68 70 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 2 3 %>80 0 0 0 0 1 %>75 5 0 2 17 23 %>75 0 0 0 6 10 %>70 36 14 27 53 64 %>70 50 7 27 56 48 NORFOLK_VA ORLANDO_FL ORF 0826 0827 0828 0829 0830 ORL 0826 0827 0828 0829 0830 MEAN 75 72 72 73 73 MEAN 91 88 88 87 86 %>100 0 0 0 0 0 %>100 1 0 0 0 0 %>95 0 0 0 0 0 %>95 15 4 2 1 1 %>90 0 0 0 0 0 %>90 55 33 25 20 16 %>85 0 0 0 0 0 %>85 90 79 76 73 62 %>80 1 0 0 0 1 %>80 99 98 98 98 95 %>75 48 7 6 18 26 %>75 100 100 100 100 100 %>70 99 81 77 84 87 %>70 100 100 100 100 100 PHILADELPHIA_PA PITTSBURGH_PA PHL 0826 0827 0828 0829 0830 PIT 0826 0827 0828 0829 0830 MEAN 68 65 66 69 69 MEAN 60 59 62 65 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 1 %>80 0 0 0 0 0 %>75 0 0 0 4 10 %>75 0 0 0 0 2 %>70 24 5 12 40 41 %>70 0 0 0 7 16 PORTLAND_ME PROVIDENCE_RI PWM 0826 0827 0828 0829 0830 PVD 0826 0827 0828 0829 0830 MEAN 67 63 64 65 64 MEAN 68 64 65 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 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 0 %>75 1 0 0 1 2 %>70 7 0 1 6 5 %>70 26 2 5 20 18 RALEIGH-DURHAM_NC RICHMOND_VA RDU 0826 0827 0828 0829 0830 RIC 0826 0827 0828 0829 0830 MEAN 71 69 68 70 71 MEAN 71 68 68 70 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 2 %>80 0 0 0 1 1 %>75 7 3 1 11 18 %>75 6 1 1 10 14 %>70 71 38 28 49 61 %>70 60 24 22 48 55 SAVANNAH_GA TALLAHASSEE_FL SAV 0826 0827 0828 0829 0830 TLH 0826 0827 0828 0829 0830 MEAN 81 79 78 77 78 MEAN 82 80 82 82 82 %>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 1 0 0 0 0 %>90 2 0 1 1 5 %>85 11 3 1 4 7 %>85 21 6 15 19 26 %>80 60 36 24 27 36 %>80 66 50 68 67 62 %>75 96 86 80 71 77 %>75 95 93 97 96 90 %>70 100 99 99 96 97 %>70 100 100 100 100 99 TAMPA_FL WASHINGTON_DC TPA 0826 0827 0828 0829 0830 DCA 0826 0827 0828 0829 0830 MEAN 92 89 89 88 88 MEAN 69 66 67 70 70 %>100 5 2 1 1 1 %>100 0 0 0 0 0 %>95 26 13 10 8 8 %>95 0 0 0 0 0 %>90 66 45 42 36 34 %>90 0 0 0 0 0 %>85 92 81 81 77 72 %>85 0 0 0 0 0 %>80 99 97 97 97 95 %>80 0 0 0 0 1 %>75 100 100 100 100 100 %>75 1 0 1 9 14 %>70 100 100 100 100 100 %>70 32 9 18 48 50 URL IS 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