Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
170 FOUS53 KDMX 030003 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 703 PM CDT Wed Sep 2 2026 IAZ060-030900- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 703 PM CDT Wed Sep 2 2026 Date 09/02/26 Thu 09/03/26 Fri 09/04/26 Sat CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 77 95 76 96 74 Temp 83 83 80 78 86 93 95 92 84 81 79 77 85 93 96 93 84 80 77 75 Dewpt 70 65 66 66 69 69 69 68 68 68 68 68 70 70 70 69 69 69 70 69 RH 65 55 62 67 57 46 43 46 59 65 69 74 61 47 43 46 61 69 79 82 Wind dir S S S S SW SW S S S S S S SW S S S S S S S Wind spd 9 10 9 8 9 11 12 9 9 8 6 5 8 8 9 6 5 4 3 3 Clouds FW FW FW SC SC SC FW FW FW CL FW FW SC FW FW SC FW FW SC SC PoP 12hr 10 10 5 5 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Tstms S Heat index 99100 97 90 99103 99 Max heat 98 93 86 99 103 96 85 101 104 97 83 Heat Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Date 09/05 Sun 09/06/26 Mon 09/07/26 Tue 09/08/26 Wed 09/09/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 93 72 93 71 90 73 91 73 88 Temp 91 89 77 73 90 88 76 72 87 87 78 74 89 87 79 73 86 84 Dewpt 71 70 71 70 70 70 70 68 69 68 66 65 68 67 66 65 65 65 PWind dir S SE SE SE SE SE S SW NW Wind char LT LT LT LT LT GN GN GN GN Avg clouds SC FW SC FW SC SC SC FW SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 10 20 20 20 20 20 40 30 Rain shwrs S S S S S S S S S C C C Tstms S S S S S S S S S S $$ IAZ039-030900- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 703 PM CDT Wed Sep 2 2026 Date 09/02/26 Thu 09/03/26 Fri 09/04/26 Sat CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 72 90 72 90 71 Temp 78 76 74 72 80 86 89 85 78 77 74 72 81 87 90 86 78 75 73 72 Dewpt 72 69 67 68 71 73 73 74 70 69 68 69 72 75 74 76 72 71 70 70 RH 82 79 79 87 74 65 59 70 76 76 82 90 74 68 60 72 82 87 90 93 Wind dir S S S SE SW S S S S S S S S S S S E SE SE SE Wind spd 4 5 6 4 5 8 9 8 8 8 6 5 6 8 5 4 4 3 3 3 Clouds FW SC SC B1 B1 SC FW FW SC SC SC FW SC FW FW FW FW SC FW SC PoP 12hr 30 20 20 10 30 QPF 12hr 0.01 0 0.04 0 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C S S Tstms S S S S S S Heat index 93 98 93 86 96100 96 Max heat 92 88 94 99 90 98 102 92 Date 09/05 Sun 09/06/26 Mon 09/07/26 Tue 09/08/26 Wed 09/09/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 70 86 68 84 68 84 68 83 Temp 86 84 75 71 84 82 73 69 81 80 73 69 82 80 74 69 81 78 Dewpt 74 74 71 70 73 72 69 67 70 70 66 64 69 69 66 64 67 66 PWind dir SE SE SE SE SE SE S SW NW Wind char LT LT LT GN GN GN GN GN GN Avg clouds SC FW FW FW SC SC FW SC SC B1 SC SC B1 SC SC SC B1 SC PoP 12hr 10 20 20 30 30 20 30 40 30 Rain shwrs S S S C S C S C S C C C S Tstms S S S S S S S S S $$ IAZ048-030900- Ames-Story IA 41.99N 93.62W Elev. 936 ft 703 PM CDT Wed Sep 2 2026 Date 09/02/26 Thu 09/03/26 Fri 09/04/26 Sat CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 73 95 74 95 71 Temp 80 77 76 74 83 91 94 91 81 79 77 75 83 92 95 92 81 77 74 72 Dewpt 71 67 66 67 69 70 70 71 70 69 68 68 70 71 71 71 71 71 70 69 RH 74 71 71 79 63 50 46 52 69 72 74 79 65 51 46 51 72 82 87 90 Wind dir S S S SE SW S S S S S S S S S S S S SE SE S Wind spd 5 6 6 5 8 10 11 6 8 6 5 4 8 8 8 4 4 3 3 2 Clouds FW FW SC SC SC SC FW FW FW FW SC FW SC FW FW FW FW SC SC SC PoP 12hr 20 20 5 10 10 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 Heat index 97100 98 100102 99 Max heat 95 90 99 103 95 101 104 96 Date 09/05 Sun 09/06/26 Mon 09/07/26 Tue 09/08/26 Wed 09/09/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 93 70 91 69 88 70 89 70 86 Temp 90 88 75 71 88 85 74 70 86 85 75 72 87 85 76 70 84 81 Dewpt 72 72 72 70 72 71 70 68 70 69 67 65 69 69 66 65 66 66 PWind dir S SE SE SE SE SE S W NW Wind char LT LT LT LT GN GN GN GN GN Avg clouds SC FW FW SC SC SC SC SC B1 SC SC SC B1 SC SC B1 B1 SC PoP 12hr 20 20 20 20 20 20 30 40 30 Rain shwrs S S S S S S S S C C C C C C Tstms S S S S S S S S S S $$ IAZ004-030900- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 703 PM CDT Wed Sep 2 2026 Date 09/02/26 Thu 09/03/26 Fri 09/04/26 Sat CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 88 71 89 70 Temp 76 72 70 69 77 83 87 85 76 75 73 71 79 86 89 86 76 74 72 70 Dewpt 70 68 66 66 69 70 72 72 70 68 67 66 70 72 72 73 71 69 68 68 RH 82 87 87 90 76 65 61 65 82 79 81 84 74 63 57 65 85 84 87 93 Wind dir SE S S SW S S S S S S S S S S S S SE S S S Wind spd 4 4 6 9 11 13 12 8 8 8 9 8 9 8 5 5 5 4 5 5 Clouds FW FW SC B1 SC FW FW FW FW FW SC FW FW FW FW FW FW FW SC SC PoP 12hr 30 30 20 10 10 QPF 12hr 0.03 0 0.03 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S Tstms C C S S Heat index 94 91 92 97 93 Max heat 90 85 87 96 87 92 97 89 Date 09/05 Sun 09/06/26 Mon 09/07/26 Tue 09/08/26 Wed 09/09/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 69 86 67 82 67 83 65 80 Temp 85 84 73 70 83 81 71 67 79 79 71 69 79 79 70 65 78 77 Dewpt 72 73 69 68 71 71 67 66 70 70 65 64 69 69 64 61 65 65 PWind dir S SE SE SE SE S SW W W Wind char LT LT GN GN GN GN GN GN GN Avg clouds SC FW FW FW SC SC SC SC B2 B1 SC B1 B1 SC SC SC SC SC PoP 12hr 10 30 40 40 30 40 40 40 20 Rain shwrs S C C C S C C C C S C C S S Tstms S S S C S C C C S S S S $$ IAZ035-030900- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 703 PM CDT Wed Sep 2 2026 Date 09/02/26 Thu 09/03/26 Fri 09/04/26 Sat CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 70 92 72 93 70 Temp 78 74 73 71 80 86 91 88 79 77 74 72 82 89 92 89 78 75 72 71 Dewpt 72 68 66 67 70 71 72 72 71 68 67 67 71 72 73 73 72 70 70 69 RH 82 82 79 87 72 61 54 59 77 74 79 84 69 57 54 59 82 84 93 93 Wind dir S S S S S S S S S S S S S S S S E S S SE Wind spd 3 4 5 5 8 11 10 5 5 5 6 5 6 6 5 3 4 3 3 3 Clouds FW SC SC B2 SC SC FW FW FW FW SC FW SC FW FW FW FW SC SC SC PoP 12hr 40 40 20 10 10 QPF 12hr 0.04 0.04 0.04 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S Tstms C C S Heat index 91 98 96 96100 97 Max heat 93 87 93 100 92 97 101 94 Date 09/05 Sun 09/06/26 Mon 09/07/26 Tue 09/08/26 Wed 09/09/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 91 70 89 68 87 68 87 67 84 Temp 88 86 74 70 85 83 72 68 83 82 73 70 83 83 73 68 81 79 Dewpt 73 73 70 69 72 72 68 67 71 71 66 64 70 70 66 63 66 67 PWind dir SE SE SE SE SE S SW W NW Wind char LT LT LT LT LT GN GN GN LT Avg clouds SC FW FW SC SC SC SC SC B2 B1 SC B1 B1 SC SC B1 B1 SC PoP 12hr 10 20 30 40 30 30 40 50 30 Rain shwrs S C C S C C C C S C C C C Tstms S S C S C C S S S S C $$ IAZ094-030900- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 703 PM CDT Wed Sep 2 2026 Date 09/02/26 Thu 09/03/26 Fri 09/04/26 Sat CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 75 94 74 95 73 Temp 83 82 78 76 85 91 93 91 83 81 78 75 85 92 95 92 84 80 76 74 Dewpt 70 66 66 66 68 69 68 67 68 68 68 67 69 69 68 67 68 69 69 68 RH 65 58 67 71 57 49 44 45 61 65 71 76 59 47 42 44 59 69 79 82 Wind dir S S S S SW S S S S S S S SW S S S S S S S Wind spd 9 9 8 8 12 12 12 10 8 6 6 6 9 10 10 6 5 4 3 3 Clouds FW FW CL CL CL FW FW FW FW FW FW FW FW FW SC SC SC SC SC SC PoP 12hr 5 5 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 96 98 97100 Max heat 96 91 83 98 100 93 84 99 101 93 Heat Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Date 09/05 Sun 09/06/26 Mon 09/07/26 Tue 09/08/26 Wed 09/09/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 94 72 93 71 91 72 92 73 90 Temp 91 89 77 73 91 88 77 72 88 88 78 74 90 89 79 74 87 85 Dewpt 69 66 68 67 67 67 68 66 66 63 66 65 66 65 65 64 65 64 PWind dir S SE SE SE SE SE S SW NW Wind char LT LT LT LT GN GN GN GN GN Avg clouds SC SC SC SC SC FW SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 10 10 20 10 10 10 20 30 20 Rain shwrs S S S C C S S Tstms S S S S S S $$ IAZ017-030900- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 703 PM CDT Wed Sep 2 2026 Date 09/02/26 Thu 09/03/26 Fri 09/04/26 Sat CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 69 86 70 88 69 Temp 75 72 71 70 78 82 85 83 75 74 72 71 80 85 88 84 75 73 71 70 Dewpt 72 69 67 67 70 72 72 73 71 69 68 68 71 73 73 75 72 70 69 69 RH 90 90 87 90 76 72 65 72 87 84 87 90 74 67 61 74 90 90 93 97 Wind dir S S S S S S S E S S SE S S S S S E S SE S Wind spd 3 3 5 5 6 9 10 6 6 5 6 5 6 6 5 3 4 3 3 3 Clouds FW SC SC B1 B1 SC FW FW FW SC SC B1 SC FW FW FW FW SC SC SC PoP 12hr 20 30 40 10 30 QPF 12hr 0.04 0.02 0.05 0.01 0.07 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C S C C C S S Tstms S C S S C C S Heat index 87 91 89 92 96 92 Max heat 88 87 93 86 94 97 88 Date 09/05 Sun 09/06/26 Mon 09/07/26 Tue 09/08/26 Wed 09/09/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 68 85 66 82 66 82 65 80 Temp 85 83 73 69 83 80 70 67 79 78 70 67 79 78 71 66 78 75 Dewpt 73 73 70 69 72 71 68 67 70 69 65 64 69 69 65 63 65 65 PWind dir SE SE SE SE SE SE S W W Wind char LT LT LT LT GN GN GN GN GN Avg clouds SC FW FW SC SC SC SC SC B2 B1 B1 B1 B1 SC SC B1 SC SC PoP 12hr 10 20 20 40 30 30 40 50 30 Rain shwrs S S S C C C C C S C C C C Tstms S S S C C S S S S S S $$ IAZ049-030900- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 703 PM CDT Wed Sep 2 2026 Date 09/02/26 Thu 09/03/26 Fri 09/04/26 Sat CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 72 93 73 94 71 Temp 79 76 75 73 82 90 92 87 79 77 75 73 82 90 93 89 79 75 73 71 Dewpt 71 66 66 66 70 70 70 70 69 68 67 67 71 71 71 72 70 70 70 69 RH 77 71 74 79 67 52 49 57 72 74 76 81 69 54 49 57 74 84 90 93 Wind dir S S S S S S S S S S S SE S S S S SE SE S S Wind spd 4 6 8 5 6 8 9 6 8 6 6 4 6 6 5 4 4 3 3 2 Clouds FW FW SC SC SC SC FW FW FW FW SC FW SC FW FW FW FW FW FW SC PoP 12hr 20 10 10 10 20 QPF 12hr 0 0 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S Tstms S S S Heat index 96 98 92 97100 95 Max heat 94 89 98 101 91 99 102 93 Date 09/05 Sun 09/06/26 Mon 09/07/26 Tue 09/08/26 Wed 09/09/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 91 69 89 67 87 68 88 68 85 Temp 88 85 74 70 87 84 72 68 83 82 73 70 84 83 74 69 83 80 Dewpt 72 72 71 69 71 70 69 67 69 68 66 63 68 68 65 64 66 65 PWind dir SE SE SE SE SE SE S SW NW Wind char LT LT LT LT LT GN GN GN GN Avg clouds SC FW FW FW FW SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 10 20 20 30 30 20 30 40 30 Rain shwrs S S C S C S C S C C C S Tstms S S S S S S S S S $$ IAZ086-030900- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 703 PM CDT Wed Sep 2 2026 Date 09/02/26 Thu 09/03/26 Fri 09/04/26 Sat CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 77 96 76 97 74 Temp 81 83 80 78 88 94 94 91 83 80 78 77 88 94 96 92 83 79 76 75 Dewpt 70 67 68 68 71 70 70 71 70 70 69 69 72 71 70 71 71 71 71 71 RH 69 59 67 71 57 46 46 52 65 72 74 76 59 47 43 51 67 77 85 87 Wind dir S S S SW SW SW S S S S S S SW SW S S S S S S Wind spd 9 9 8 6 10 11 11 9 8 5 6 5 6 8 8 5 5 4 3 3 Clouds FW FW FW SC FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW SC PoP 12hr 5 0 0 10 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Heat index 94100100 98 94101103 99 88 Max heat 97 91 85 101 103 95 83 102 104 96 Heat Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Date 09/05 Sun 09/06/26 Mon 09/07/26 Tue 09/08/26 Wed 09/09/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 93 72 92 71 90 72 91 73 90 Temp 91 88 77 73 89 87 76 72 87 86 76 74 89 88 78 74 87 85 Dewpt 72 71 71 71 71 71 70 68 69 68 67 66 68 68 67 66 67 67 PWind dir S E SE SE SE SE S SW W Wind char LT LT LT LT LT GN GN GN GN Avg clouds SC FW FW FW SC SC FW FW SC SC SC SC B1 SC FW SC SC SC PoP 12hr 20 10 20 20 10 10 20 30 30 Rain shwrs S S S S S C C S Tstms S S S S S $$