FMUS23 KWNH 180744 PRBEHL DAYS 3--7 HEAT INDEX FORECAST TABLES NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 0742 UTC MON MAY 18 2026 MINIMUM HEAT INDEX (DEG F) AND MINIMUM HI PROB (%) FRCSTS AT EASTERN US CITIES - DAYS 3 TO 7 FROM MON MAY 18 2026 AKRON-CANTON_OH ALBANY_NY CAK 0521 0522 0523 0524 0525 ALB 0521 0522 0523 0524 0525 MIN 43 49 57 60 61 MIN 44 42 46 49 50 %>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 0 0 0 0 0 %>70 0 0 0 3 7 %>70 0 0 0 0 0 ASHEVILLE_NC ATLANTA_GA AVL 0521 0522 0523 0524 0525 ATL 0521 0522 0523 0524 0525 MIN 62 58 59 61 61 MIN 67 67 66 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 0 0 %>80 0 0 0 0 0 %>75 0 0 0 0 0 %>75 3 2 3 3 5 %>70 1 0 0 1 2 %>70 25 21 22 28 30 BALTIMORE_MD BIRMINGHAM_AL BWI 0521 0522 0523 0524 0525 BHM 0521 0522 0523 0524 0525 MIN 57 53 55 61 61 MIN 66 67 67 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 0 %>80 0 0 0 1 1 %>75 0 0 0 2 1 %>75 4 5 5 6 9 %>70 0 0 0 9 8 %>70 23 25 27 29 31 BOSTON_MA BUFFALO_NY BOS 0521 0522 0523 0524 0525 BUF 0521 0522 0523 0524 0525 MIN 51 46 47 48 50 MIN 39 42 50 53 54 %>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 0 0 0 0 0 %>70 0 0 0 0 0 %>70 0 0 0 0 0 CHARLESTON_SC CHARLESTON_WV CHS 0521 0522 0523 0524 0525 CRW 0521 0522 0523 0524 0525 MIN 72 71 74 74 73 MIN 53 57 61 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 3 3 %>80 0 0 0 0 0 %>75 7 12 31 39 34 %>75 0 0 0 0 0 %>70 82 68 90 87 83 %>70 0 0 1 3 7 CHARLOTTE_NC CHICAGO_IL CLT 0521 0522 0523 0524 0525 ORD 0521 0522 0523 0524 0525 MIN 68 62 63 66 66 MIN 43 47 53 55 60 %>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 1 %>80 0 0 0 00 %>75 8 1 2 4 6 %>75 0 0 0 0 1 %>70 33 7 11 21 25 %>70 0 0 0 1 5 CINCINNATI_OH CLEVELAND_OH LUK 0521 0522 0523 0524 0525 CLE 0521 0522 0523 0524 0525 MIN 51 54 63 64 65 MIN 45 50 58 61 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 0 0 0 0 1 %>70 0 0 3 6 12 %>70 0 0 0 2 9 COLUMBIA_SC COLUMBUS_OH CAE 0521 0522 0523 0524 0525 TZR 0521 0522 0523 0524 0525 MIN 69 68 68 70 69 MIN 47 52 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 1 0 0 1 1 %>80 0 0 0 0 0 %>75 9 6 5 11 10 %>75 0 0 0 0 1 %>70 42 33 35 48 44 %>70 0 0 2 4 9 DAYTON_OH DETROIT_MI MGY 0521 0522 0523 0524 0525 DET 0521 0522 0523 0524 0525 MIN 49 53 62 63 65 MIN 40 47 54 56 58 %>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 0 %>70 0 0 3 6 13 %>70 0 0 0 0 1 EVANSVILLE_IN GRAND_RAPIDS_MI EVV 0521 0522 0523 0524 0525 GRR 0521 0522 0523 0524 0525 MIN 56 59 65 66 67 MIN 38 42 51 53 56 %>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 1 1 3 %>75 0 0 0 0 0 %>70 0 1 12 13 27 %>70 0 0 0 0 1 GREENSBORO_NC HUNTSVILLE_AL GSO 0521 0522 0523 0524 0525 HSV 0521 0522 0523 0524 0525 MIN 66 57 60 64 65 MIN 65 66 66 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 1 0 0 0 0 %>80 0 0 0 0 0 %>75 6 0 0 3 4 %>75 1 1 2 1 3 %>70 26 1 4 15 19 %>70 12 14 16 14 19 INDIANAPOLIS_IN KNOXVILLE_TN IND 0521 0522 0523 0524 0525 TYS 0521 0522 0523 0524 0525 MIN 49 52 61 63 65 MIN 66 65 65 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 0 %>80 0 0 0 0 0 %>75 0 0 0 0 3 %>75 0 0 0 0 0 %>70 0 0 3 6 16 %>70 3 1 4 56 LEXINGTON_KY LOUISVILLE_KY LEX 0521 0522 0523 0524 0525 SDF 0521 0522 0523 0524 0525 MIN 54 56 63 63 64 MIN 56 58 65 66 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 0 0 0 0 0 %>75 0 0 0 0 1 %>75 0 0 0 0 2 %>70 0 0 4 5 9 %>70 0 0 8 12 22 MEMPHIS_TN MIAMI_FL MEM 0521 0522 0523 0524 0525 MIA 0521 0522 0523 0524 0525 MIN 65 66 67 67 69 MIN 80 81 83 84 84 %>100 0 0 0 0 0 %>100 0 0 0 1 0 %>95 0 0 0 0 0 %>95 0 1 2 3 3 %>90 0 0 0 0 0 %>90 1 4 11 14 13 %>85 0 0 0 0 0 %>85 12 20 32 38 38 %>80 0 0 0 0 0 %>80 43 53 65 76 78 %>75 0 1 1 2 2 %>75 87 91 94 96 97 %>70 8 16 19 25 36 %>70 99 100 100 100 100 MILWAUKEE_WI MOBILE_AL MKE 0521 0522 0523 0524 0525 MOB 0521 0522 0523 0524 0525 MIN 39 43 47 50 54 MIN 70 72 73 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 0 0 0 0 0 %>85 0 0 0 0 0 %>85 0 0 0 0 0 %>80 0 0 0 0 0 %>80 1 1 2 3 3 %>75 0 0 0 0 0 %>75 13 20 29 32 29 %>70 0 0 0 0 0 %>70 52 67 81 83 80 NASHVILLE_TN NEW_YORK_CITY_NY BNA 0521 0522 0523 0524 0525 NYC 0521 0522 0523 0524 0525 MIN 63 64 66 65 66 MIN 56 51 52 56 57 %>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 1 1 1 2 %>75 0 0 0 0 0 %>70 6 8 11 14 18 %>70 0 0 0 1 1 NORFOLK_VA ORLANDO_FL ORF 0521 0522 0523 0524 0525 ORL 0521 0522 0523 0524 0525 MIN 69 60 67 70 69 MIN 74 75 76 77 76 %>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 1 5 2 %>75 2 0 1 8 8 %>75 17 48 76 79 81 %>70 36 0 16 46 39 %>70 99 100 100 100 100 PHILADELPHIA_PA PITTSBURGH_PA PHL 0521 0522 0523 0524 0525 PIT 0521 0522 0523 0524 0525 MIN 56 50 52 57 58 MIN 46 52 58 62 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 0 0 0 0 %>80 0 0 0 0 0 %>75 0 0 0 1 0 %>75 0 0 0 1 1 %>70 0 0 0 4 3 %>70 0 0 1 6 9 PORTLAND_ME PROVIDENCE_RI PWM 0521 0522 0523 0524 0525 PVD 0521 0522 0523 0524 0525MIN 46 41 43 43 45 MIN 52 45 47 50 51 %>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 0 0 0 0 0 %>70 0 0 0 0 0 %>70 0 0 0 0 0 RALEIGH-DURHAM_NC RICHMOND_VA RDU 0521 0522 0523 0524 0525 RIC 0521 0522 0523 0524 0525 MIN 69 59 65 68 68 MIN 63 54 59 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 1 1 %>80 0 0 0 1 1 %>75 8 0 2 7 9 %>75 3 0 0 6 6 %>70 43 2 15 32 36 %>70 13 0 3 22 22 SAVANNAH_GA TALLAHASSEE_FL SAV 0521 0522 0523 0524 0525 TLH 0521 0522 0523 0524 0525 MIN 71 73 74 74 73 MIN 71 72 73 74 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 1 2 3 %>80 0 0 0 1 2 %>75 7 20 38 40 35 %>75 9 12 18 33 31 %>70 69 82 92 88 81 %>70 60 70 86 92 85 TAMPA_FL WASHINGTON_DC TPA 0521 0522 0523 0524 0525 DCA 0521 0522 0523 0524 0525 MIN 76 77 78 78 78 MIN 58 53 56 62 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 1 3 2 %>85 0 0 0 0 0 %>80 5 11 24 29 25 %>80 0 0 0 0 0 %>75 62 75 86 81 80 %>75 0 0 0 3 2 %>70 97 99 100 99 99 %>70 0 0 1 12 12 URL IS WWW.WPC.NCEP.NOAA.GOV $$