Point Forecast Matrices
Issued by NWS Sioux Falls, SD
Issued by NWS Sioux Falls, SD
539 FOUS53 KFSD 181548 PFMFSD Point Forecast Matrices National Weather Service Sioux Falls SD 1048 AM CDT Tue Aug 18 2026 IAZ012-182100- SIOUX CENTER-SIOUX IA 43.08N 96.18W Elev. 1446 ft 1048 AM CDT Tue Aug 18 2026 Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 79 61 77 58 79 Temp 78 79 78 70 66 63 62 69 75 75 72 65 62 60 59 70 76 79 76 Dewpt 69 69 69 67 65 62 61 67 68 68 68 65 62 60 59 69 72 73 73 RH 74 72 74 90 97 97 97 93 79 79 87100100100100 97 87 82 90 Wind dir W W NW NE E E E SE S SW SE SE S S S S S S S Wind spd 5 4 3 4 3 2 3 2 2 2 2 3 3 3 3 6 9 9 5 Clouds B1 B1 B1 SC B1 SC B1 SC B1 SC SC SC FW FW SC FW FW FW FW PoP 12hr 20 10 30 10 20 QPF 12hr 0.01 0 0.14 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C Tstms S C Heat index 82 Max heat 82 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 61 82 59 78 58 77 60 78 Temp 65 62 79 78 65 60 75 75 63 60 74 74 65 61 76 76 Dewpt 65 62 72 73 64 59 66 68 60 59 69 71 65 61 71 73 PWind dir S W NE NE E SE SE S Wind char LT LT LT LT LT GN LT LT Avg clouds SC SC FW FW FW FW SC FW FW SC B2 B1 SC SC B2 SC PoP 12hr 40 10 20 5 20 20 20 10 Rain shwrs C S S S S S S S Tstms C S S S $$ IAZ031-182100- SIOUX CITY-WOODBURY IA 42.40N 96.38W Elev. 1210 ft 1048 AM CDT Tue Aug 18 2026 Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 79 63 78 59 80 Temp 77 79 78 72 68 65 65 70 76 77 76 68 64 62 60 70 78 80 78 Dewpt 70 71 71 69 67 65 64 68 69 68 68 65 64 62 60 69 71 72 73 RH 79 77 79 90 97100 97 93 79 74 76 90100100100 97 79 77 85 Wind dir W W NW N NE E E SE SE S SE S S S S S S S S Wind spd 6 5 3 2 3 3 3 2 3 2 3 3 3 2 2 5 8 6 4 Clouds SC B2 B1 B1 B1 SC B2 SC B2 B1 SC SC SC FW SC FW FW FW FW PoP 12hr 20 5 40 20 10 QPF 12hr 0.02 0 0.03 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C Tstms S S C Heat index 81 84 Max heat 84 86 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 62 83 62 79 60 78 62 79 Temp 67 63 80 81 68 62 77 77 65 62 75 76 67 63 77 77 Dewpt 66 63 73 73 66 61 68 69 63 60 69 71 66 63 72 73 PWind dir S SW NE NE SE SE SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW CL FW SC FW FW SC B2 B1 SC SC B1 SC PoP 12hr 30 10 10 5 20 20 20 20 Rain shwrs C S S S S S S Tstms C S S $$ IAZ014-182100- SPENCER-CLAY IA 43.15N 95.18W Elev. 1325 ft 1048 AM CDT Tue Aug 18 2026 Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 60 78 57 79 Temp 80 81 78 70 64 62 61 69 75 77 74 64 61 59 58 70 77 79 76 Dewpt 67 68 68 66 62 60 58 64 64 64 64 62 60 59 58 66 68 70 70 RH 65 65 71 87 93 93 90 84 69 64 71 93 97100100 87 74 74 82 Wind dir W W NW NE N NE E SE S SW S SE S SW SW SW SW S S Wind spd 6 6 4 3 3 3 3 3 3 3 2 3 3 3 3 6 10 11 8 Clouds B1 B1 B2 B1 SC SC B1 FW B1 B1 SC SC FW FW FW FW FW FW FW PoP 12hr 20 20 10 10 20 QPF 12hr 0.04 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C Tstms S S S S C Heat index 82 83 Max heat 82 84 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 60 82 59 78 57 77 59 79 Temp 65 61 79 78 64 59 75 74 61 59 75 74 63 60 76 76 Dewpt 64 61 69 69 61 57 63 64 58 57 65 67 62 60 68 69 PWind dir SW W NW N E SE SE S Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC FW FW FW FW SC FW FW SC B1 B1 SC SC B1 SC PoP 12hr 40 10 20 5 10 10 20 10 Rain shwrs C C S S S Tstms C S S S $$ IAZ022-182100- STORM LAKE-BUENA VISTA 42.60N 95.23W Elev. 1427 ft 1048 AM CDT Tue Aug 18 2026 Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 61 77 59 78 Temp 77 78 76 69 66 64 63 68 75 75 73 65 62 61 60 70 76 78 75 Dewpt 69 70 70 68 65 63 62 67 67 67 67 64 62 61 60 68 69 72 72 RH 76 76 82 97 97 97 97 97 76 76 81 97100100100 93 79 82 90 Wind dir W W W N NE E NE E SE SE SE SE S S SW SW S S S Wind spd 6 6 3 4 3 4 4 3 2 2 2 2 3 3 3 4 8 8 4 Clouds SC B1 B1 B2 SC B1 B2 SC B1 SC FW FW FW FW SC FW FW FW FW PoP 12hr 30 10 10 5 20 QPF 12hr 0.01 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S Tstms S S S Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 62 81 61 77 59 76 61 78 Temp 65 62 79 77 65 61 75 74 63 60 74 73 64 61 75 75 Dewpt 65 62 72 73 64 60 67 68 60 59 68 70 64 61 71 72 PWind dir SW W N N E SE SE S Wind char LT LT LT LT LT LT LT LT Avg clouds FW SC FW FW FW FW SC FW FW SC B1 B1 SC B1 B1 SC PoP 12hr 20 10 30 5 20 20 20 5 Rain shwrs S C S S S S S Tstms S C S $$ MNZ072-182100- MARSHALL-LYON MN 44.47N 95.82W Elev. 1151 ft 1048 AM CDT Tue Aug 18 2026 Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 79 58 80 60 84 Temp 76 79 77 68 63 61 59 70 77 79 77 67 64 62 61 74 81 83 80 Dewpt 63 61 60 60 59 57 56 60 59 58 59 61 60 61 61 65 64 64 65 RH 64 54 56 76 87 87 90 71 54 49 54 81 87 97100 74 56 53 60 Wind dir N N N N NW SE S S SW SW S S SW SW SW SW SW SW S Wind spd 6 6 5 4 3 3 3 3 4 4 4 5 6 8 8 11 11 11 11 Clouds B1 B1 SC FW FW FW SC SC FW SC FW SC FW FW FW FW FW SC SC PoP 12hr 20 5 30 10 30 QPF 12hr 0 0 0.06 0 0.05 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C Tstms S C S Heat index 83 82 Max heat 81 81 83 85 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 83 59 79 59 79 61 82 Temp 68 63 80 80 65 60 77 77 64 60 77 77 66 62 79 80 Dewpt 64 62 63 61 59 56 57 57 58 58 60 62 63 62 65 66 PWind dir SW NW NW N NW SE S SW Wind char GN GN LT LT LT GN LT GN Avg clouds SC SC FW CL CL FW FW FW FW SC B1 SC SC SC B1 SC PoP 12hr 30 5 5 0 10 10 30 5 Rain shwrs C C S Tstms S $$ MNZ081-182100- WINDOM-COTTONWOOD MN 43.87N 95.12W Elev. 1355 ft 1048 AM CDT Tue Aug 18 2026 Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 58 78 58 80 Temp 80 81 78 70 63 61 59 70 75 77 75 66 63 60 59 71 78 80 77 Dewpt 64 63 62 62 60 57 56 60 58 58 60 61 60 59 59 64 64 65 66 RH 58 54 58 76 90 87 90 71 55 52 60 84 90 96100 79 62 60 69 Wind dir NW NW N N N NE SE S SW SW S S SW SW SW SW SW SW S Wind spd 6 6 5 3 2 2 2 2 3 3 2 3 4 5 5 9 11 11 9 Clouds SC B1 B1 SC SC FW SC SC SC SC SC SC FW FW FW FW FW FW SC PoP 12hr 20 10 30 5 20 QPF 12hr 0.01 0 0.17 0 0.03 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C Tstms S S S S S Heat index 82 Max heat 82 83 83 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 61 81 59 78 57 77 59 79 Temp 66 62 79 79 65 59 75 76 63 59 75 75 64 60 76 77 Dewpt 65 62 63 64 60 56 57 58 58 57 60 62 63 60 64 65 PWind dir SW NW NW N W S S S Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC FW FW FW FW FW FW SC SC B1 B1 B1 SC B1 SC PoP 12hr 40 10 10 0 10 10 20 10 Rain shwrs C S S S Tstms S S $$ MNZ089-182100- WORTHINGTON-NOBLES MN 43.65N 95.58W Elev. 1584 ft 1048 AM CDT Tue Aug 18 2026 Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 80 59 77 58 79 Temp 78 80 77 69 64 61 60 69 74 77 74 64 62 60 59 70 76 79 76 Dewpt 66 65 65 63 61 59 57 62 61 61 62 62 61 60 59 65 66 67 66 RH 67 60 67 81 90 93 90 78 64 58 66 93 97100100 84 71 67 71 Wind dir W NW NW NE N NE SE S SW SW SE S SW SW SW SW SW SW S Wind spd 6 6 5 4 3 3 3 3 3 3 3 3 5 6 6 10 11 11 10 Clouds B1 SC B1 B1 SC FW B1 SC B1 SC FW SC FW FW SC FW FW FW FW PoP 12hr 20 10 20 10 20 QPF 12hr 0.01 0 0.01 0 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C Tstms S S S S S Heat index 82 Max heat 82 84 82 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 61 81 59 77 58 76 59 78 Temp 66 62 78 78 64 59 75 75 62 59 74 74 64 60 76 76 Dewpt 65 62 65 65 60 56 59 60 58 58 62 64 63 60 66 67 PWind dir SW NW N N E S S S Wind char GN LT LT LT LT GN LT LT Avg clouds SC SC FW FW FW FW FW FW SC SC B1 B1 SC SC B1 SC PoP 12hr 30 10 10 0 10 20 20 10 Rain shwrs C S S S Tstms S S $$ SDZ040-182100- BROOKINGS-BROOKINGS SD 44.30N 96.80W Elev. 1617 ft 1048 AM CDT Tue Aug 18 2026 Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 80 57 79 57 83 Temp 76 79 77 67 63 60 58 70 76 77 75 66 62 60 58 71 80 82 80 Dewpt 63 61 61 61 59 57 56 61 60 59 60 61 61 60 58 66 66 63 64 RH 64 54 58 81 87 90 93 73 58 54 60 84 97100100 84 62 53 58 Wind dir NW N N NE E E SE S SW SW SW S S S S SW SW SW SW Wind spd 5 5 5 4 3 2 3 4 6 5 4 4 5 6 5 10 11 13 9 Clouds SC B1 SC SC FW SC B2 SC FW SC FW FW FW SC SC FW FW SC SC PoP 12hr 10 5 10 10 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C Tstms S Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 59 83 57 79 57 79 60 82 Temp 65 60 80 80 63 58 77 77 63 59 76 77 64 60 79 80 Dewpt 64 60 62 60 57 54 56 57 57 56 61 62 63 60 65 66 PWind dir SW N NE NE E S S SW Wind char LT LT LT LT LT GN LT GN Avg clouds SC FW FW FW CL FW SC FW FW SC B2 B1 SC SC B1 SC PoP 12hr 30 5 5 0 10 20 20 5 Rain shwrs C S S S S S Tstms S S $$ SDZ050-182100- BURKE-GREGORY SD 43.18N 99.29W Elev. 2142 ft 1048 AM CDT Tue Aug 18 2026 Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 79 62 78 60 86 Temp 74 79 78 70 68 65 64 68 73 76 75 67 64 62 61 72 82 85 83 Dewpt 65 63 64 64 63 62 61 64 64 63 65 64 63 62 61 65 64 62 65 RH 74 58 62 81 84 90 90 87 73 64 71 90 97100100 79 55 46 55 Wind dir N N NE SE SW W W SW S S SE S S SW SW SW SW SW SE Wind spd 5 5 3 3 3 6 4 6 9 9 8 9 10 11 11 10 10 9 6 Clouds B1 B1 B2 B2 B1 B1 B2 B2 SC SC FW FW FW FW FW CL CL FW CL PoP 12hr 5 10 40 20 0 QPF 12hr 0 0 0.06 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S S Tstms C S S Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 86 62 81 63 81 63 83 Temp 69 64 81 82 68 63 77 79 68 64 75 78 68 64 78 80 Dewpt 61 60 65 66 61 58 62 64 62 62 66 68 66 64 67 68 PWind dir S SE E E SE SE SE SE Wind char LT GN LT GN GN BZ GN GN Avg clouds FW FW FW FW CL FW SC FW FW B1 B2 B1 SC SC B1 SC PoP 12hr 10 10 10 5 50 30 30 5 Rain shwrs C C S C Tstms S S S C $$ SDZ057-182100- CHAMBERLAIN-BRULE SD 43.77N 99.32W Elev. 1565 ft 1048 AM CDT Tue Aug 18 2026 Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 62 80 60 87 Temp 75 81 80 71 68 65 64 69 75 79 77 69 65 63 61 72 83 87 85 Dewpt 64 63 63 63 63 63 62 64 64 63 63 65 65 63 61 66 64 61 62 RH 69 54 56 76 84 93 93 84 69 58 62 87100100100 81 53 42 46 Wind dir N N NE E E W S S S S S S S S S SW SW W N Wind spd 5 4 4 4 3 3 3 4 8 8 8 9 8 6 5 6 9 9 8 Clouds B1 B1 B2 B1 B1 SC B2 B1 FW FW FW FW FW CL SC CL FW FW CL PoP 12hr 5 5 40 10 0 QPF 12hr 0 0 0.05 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S Tstms S Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 87 62 83 63 82 63 85 Temp 69 63 83 85 68 62 79 81 68 64 77 80 68 64 80 83 Dewpt 63 62 63 62 60 58 59 61 62 62 66 67 67 64 68 67 PWind dir SE E E E SE SE SE E Wind char LT LT LT GN GN BZ GN GN Avg clouds FW FW FW FW CL FW SC SC FW B1 B2 B1 SC SC B1 SC PoP 12hr 5 5 5 5 50 40 20 20 Rain shwrs C C S S S S Tstms S S S S S $$ SDZ038-182100- HURON-BEADLE SD 44.38N 98.22W Elev. 1282 ft 1048 AM CDT Tue Aug 18 2026 Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 60 81 60 86 Temp 77 81 79 69 66 63 61 70 78 80 76 67 64 62 61 72 82 86 83 Dewpt 62 60 60 61 60 60 59 63 62 62 63 64 64 62 61 66 65 63 64 RH 60 49 52 76 81 90 93 78 58 54 64 90100100100 81 56 46 53 Wind dir N NW N NE E SE N S SW S SE S S S S S S SW W Wind spd 5 5 5 4 3 3 3 5 8 6 6 6 8 8 6 9 10 10 8 Clouds B1 SC SC SC SC SC B1 SC FW SC FW FW FW FW SC FW FW FW FW PoP 12hr 10 10 30 10 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Tstms S Heat index 84 Max heat 82 81 84 87 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 62 86 60 82 62 82 63 84 Temp 67 62 82 82 66 60 79 79 66 62 77 79 67 63 80 81 Dewpt 64 61 62 61 59 56 57 60 60 59 63 65 65 63 66 67 PWind dir S N NE NE E SE SE SW Wind char LT LT LT GN GN GN GN GN Avg clouds FW FW FW FW CL FW SC FW FW SC B2 B1 SC SC B1 SC PoP 12hr 5 0 5 5 20 30 20 5 Rain shwrs S S C S S Tstms S $$ SDZ059-182100- MITCHELL-DAVISON SD 43.76N 98.02W Elev. 1312 ft 1048 AM CDT Tue Aug 18 2026 Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 82 61 81 60 86 Temp 77 82 80 71 67 64 63 70 75 79 76 67 64 63 61 72 81 85 83 Dewpt 66 64 65 64 63 62 60 65 64 64 66 66 64 63 61 67 67 66 68 RH 69 55 60 79 87 93 90 84 69 60 71 97100100100 84 63 53 61 Wind dir NW NW NW NE E SE W S SW S S S S S S S S SW SW Wind spd 5 5 4 3 3 4 3 5 6 9 6 6 6 6 6 9 10 11 8 Clouds B1 B1 B1 B1 SC SC B1 B1 FW SC SC FW FW FW SC FW FW FW FW PoP 12hr 5 5 30 10 5 QPF 12hr 0 0 0.15 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C Tstms S Heat index 82 83 87 86 Max heat 84 82 84 89 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 62 86 59 82 61 81 62 84 Temp 67 62 82 83 66 60 78 80 66 62 76 79 67 63 78 81 Dewpt 66 62 65 66 62 57 59 63 62 60 65 68 66 63 68 70 PWind dir S N NE E SE SE SE S Wind char LT LT LT GN GN GN GN GN Avg clouds FW FW FW FW CL FW SC FW FW SC B2 B1 SC SC B1 SC PoP 12hr 5 5 0 0 20 20 20 5 Rain shwrs S S S S S S Tstms S S S $$ SDZ062-182100- SIOUX FALLS-MINNEHAHA SD 43.57N 96.73W Elev. 1424 ft 1048 AM CDT Tue Aug 18 2026 Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 61 80 60 83 Temp 78 81 79 70 66 64 62 71 77 78 76 67 64 62 61 72 80 83 80 Dewpt 66 66 64 64 63 61 60 64 63 62 62 63 63 62 61 66 67 67 67 RH 67 60 60 81 90 90 93 79 62 58 62 87 97100100 81 65 59 65 Wind dir NW NW NW N E E E S S SW S S S S S S S S SW Wind spd 5 5 5 3 3 2 3 4 4 5 5 3 4 4 4 8 10 11 9 Clouds B1 B1 SC SC SC SC B1 SC SC FW FW SC FW FW SC FW FW FW FW PoP 12hr 10 10 30 10 10 QPF 12hr 0 0 0.06 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C Tstms S S Heat index 83 82 85 82 Max heat 82 85 81 83 86 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 62 85 60 81 60 80 62 82 Temp 67 62 82 82 66 61 78 79 65 61 77 78 66 62 79 80 Dewpt 66 62 65 64 61 57 59 60 59 59 63 65 64 62 67 68 PWind dir S NW NE NE E SE SE S Wind char LT LT LT LT LT GN LT LT Avg clouds FW FW FW FW CL FW SC FW FW SC B2 B1 SC SC B2 B1 PoP 12hr 30 5 5 5 20 20 20 5 Rain shwrs C S S S S S Tstms S S S $$ SDZ070-182100- VERMILLION-CLAY SD 42.95N 96.92W Elev. 1132 ft 1048 AM CDT Tue Aug 18 2026 Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 63 78 60 82 Temp 79 81 80 72 69 66 65 70 75 77 75 67 65 63 61 71 79 82 80 Dewpt 70 70 70 69 67 66 64 69 69 69 69 67 65 63 61 70 72 73 75 RH 74 69 72 90 93100 97 97 82 76 82100100100100 97 79 74 85 Wind dir W NW W NW E E E SE S S SE S S S S S S S S Wind spd 6 4 3 3 2 2 2 3 4 4 4 4 4 4 4 6 9 9 6 Clouds B1 B1 B1 SC SC SC B2 B1 B2 SC SC SC SC FW SC FW FW FW FW PoP 12hr 10 5 40 20 10 QPF 12hr 0.01 0 0.06 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S S S C Tstms S C S C Heat index 85 83 87 82 Max heat 82 86 88 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 62 84 61 79 60 78 62 80 Temp 68 63 81 81 68 62 77 77 66 62 75 76 67 63 77 78 Dewpt 68 63 73 74 66 61 68 70 64 61 70 72 67 63 72 74 PWind dir S S NE E SE SE SE S Wind char LT LT LT LT LT GN LT LT Avg clouds FW FW FW FW CL FW SC FW FW SC B2 B1 SC SC B1 SC PoP 12hr 30 10 20 0 20 20 20 20 Rain shwrs C S S S S S S S Tstms C S S S S $$ SDZ069-182100- YANKTON-YANKTON SD 42.95N 97.39W Elev. 1207 ft 1048 AM CDT Tue Aug 18 2026 Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 82 62 79 60 83 Temp 78 82 80 72 69 66 65 69 74 77 75 67 65 63 61 70 79 83 81 Dewpt 69 69 69 68 66 65 63 68 69 68 69 67 65 63 61 70 71 71 73 RH 74 65 69 87 90 97 93 97 84 74 82100100100100100 77 67 77 Wind dir W NW W NW NE E NE S S S S SE S S S S S S S Wind spd 5 5 4 3 3 3 3 4 5 5 5 5 5 4 4 6 10 9 6 Clouds B1 B1 B1 SC B1 SC B1 B2 B2 SC FW SC FW FW SC FW FW FW FW PoP 12hr 10 5 50 20 10 QPF 12hr 0 0 0.42 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S C Tstms S S C Heat index 85 83 88 85 Max heat 86 84 90 Date Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 85 62 81 61 79 62 81 Temp 68 63 81 81 68 62 77 78 66 63 75 77 67 63 77 79 Dewpt 67 63 71 73 65 60 65 69 64 61 69 72 67 63 71 73 PWind dir S SE NE E SE SE SE S Wind char LT LT LT LT GN GN GN GN Avg clouds FW FW FW FW FW FW SC FW FW SC B2 B1 SC B1 B1 SC PoP 12hr 30 10 20 0 20 20 20 5 Rain shwrs C S S S S S S Tstms C S S S $$