Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
545 FOUS53 KDMX 152132 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 432 PM CDT Fri Aug 15 2025 IAZ060-160900- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 432 PM CDT Fri Aug 15 2025 Date 08/15/25 Sat 08/16/25 Sun 08/17/25 Mon 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 74 96 75 94 74 Temp 87 80 77 75 74 84 92 96 91 84 81 78 76 84 91 93 90 83 80 77 75 Dewpt 74 73 71 70 70 73 74 74 73 73 72 70 70 74 74 73 73 72 71 70 70 RH 65 79 82 84 87 70 56 49 56 70 74 76 82 72 58 52 58 70 74 79 84 Wind dir S SE SE S S S S S S S S SW S S S S S S S S S Wind spd 8 6 8 6 6 10 11 11 9 8 8 6 5 8 9 9 8 6 6 6 5 Clouds SC SC SC SC SC SC FW FW FW FW FW FW SC FW FW SC SC SC SC SC B1 PoP 12hr 10 0 5 5 20 QPF 12hr 0 0 0 0 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S Tstms S S S Heat index 95 90102106100 91 91101102 98 89 Max heat 103 91 105 109 98 83 103 105 98 Heat Y Y Y Date 08/18 Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 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 71 88 67 83 64 82 63 85 Temp 89 88 76 73 84 82 72 69 79 79 70 65 79 80 68 64 80 81 Dewpt 74 74 72 70 73 72 70 68 69 67 67 64 65 66 65 63 66 67 PWind dir SW SW NW NE NE NE E SE NW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC SC SC SC SC SC SC SC SC FW SC FW FW FW FW SC FW PoP 12hr 20 30 20 20 5 5 5 5 5 Rain shwrs S C C S S S Tstms S C C S S S $$ IAZ039-160900- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 432 PM CDT Fri Aug 15 2025 Date 08/15/25 Sat 08/16/25 Sun 08/17/25 Mon CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 70 92 72 90 71 Temp 83 75 73 71 71 79 87 91 89 81 77 74 73 81 88 90 86 79 77 74 73 Dewpt 75 71 70 68 69 73 75 76 77 76 72 71 71 74 75 76 76 74 71 70 70 RH 77 87 90 90 93 82 68 62 68 85 85 90 93 79 66 64 72 85 82 87 90 Wind dir S SE SE SE SE S S S S S SE S S S S S S S S S S Wind spd 6 6 6 6 6 9 11 11 8 5 5 5 5 6 10 10 9 8 8 8 6 Clouds B2 B2 B1 B1 B1 B1 SC SC CL FW SC SC SC SC SC SC FW SC SC B1 SC PoP 12hr 30 5 20 20 30 QPF 12hr 0.01 0 0 0 0.04 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S S S S C C C C C Tstms C S S S S S C C C C C Heat index 91 97105101 88 87 98102 96 Max heat 98 86 98 106 99 99 103 94 Svr Tstorm Date 08/18 Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 69 82 65 79 62 80 61 82 Temp 86 84 75 71 80 78 69 66 76 77 66 63 78 77 65 62 79 78 Dewpt 75 75 72 70 72 71 68 65 67 67 65 62 65 66 63 61 67 68 PWind dir SW SW N NE NE NE E S W Wind char GN LT LT LT LT LT LT LT LT Avg clouds SC SC SC SC B1 SC SC SC SC SC FW SC SC FW FW FW SC SC PoP 12hr 30 40 20 10 5 5 5 5 10 Rain shwrs C C C C S S Tstms C C C S S S $$ IAZ048-160900- Ames-Story IA 41.99N 93.62W Elev. 936 ft 432 PM CDT Fri Aug 15 2025 Date 08/15/25 Sat 08/16/25 Sun 08/17/25 Mon 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 94 72 93 72 Temp 85 78 75 73 72 82 89 93 89 82 79 75 73 82 89 92 88 81 78 76 74 Dewpt 76 73 71 70 70 74 76 77 76 74 72 71 70 74 76 77 76 73 71 71 70 RH 75 85 87 90 93 77 66 60 66 77 79 87 90 77 66 62 68 77 79 85 87 Wind dir S SE SE SE SE S S S S S S S S S S S S S S S S Wind spd 8 8 8 6 5 9 10 11 8 6 6 5 4 6 9 9 6 6 6 5 5 Clouds B1 B1 SC B1 SC SC FW FW FW FW FW SC SC SC FW FW SC SC SC SC SC PoP 12hr 20 0 5 10 30 QPF 12hr 0 0 0 0 0.03 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C S Tstms S S S C C S Heat index 94 88100107101 88 87101105 99 Max heat 100 89 102 107 98 103 107 96 Heat Y Y Y Svr Tstorm Date 08/18 Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 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 85 66 81 62 82 62 83 Temp 87 86 74 71 82 81 70 67 78 78 68 63 78 78 66 62 79 79 Dewpt 76 76 72 70 74 73 70 67 68 68 67 63 66 68 65 62 67 69 PWind dir SW SW N NE NE E E SE W Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW SC SC SC SC SC SC SC SC SC SC FW FW FW SC SC FW PoP 12hr 20 40 20 10 5 5 5 5 10 Rain shwrs S C C S Tstms S C C S $$ IAZ004-160900- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 432 PM CDT Fri Aug 15 2025 Date 08/15/25 Sat 08/16/25 Sun 08/17/25 Mon CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 71 91 70 90 70 Temp 81 75 73 72 71 78 86 90 87 79 75 73 71 79 85 88 85 77 75 73 71 Dewpt 73 71 69 68 67 71 73 75 76 74 72 68 68 71 73 74 74 71 70 68 68 RH 77 87 87 87 87 79 65 62 70 85 90 84 90 77 67 63 70 82 84 84 90 Wind dir S SE SE S S SE SE S SE SE SE SE SE SE S S S S S S SW Wind spd 8 8 10 10 9 10 10 10 8 8 8 8 6 10 12 13 10 10 10 9 8 Clouds B1 B1 B1 B1 B2 B1 SC SC B1 SC SC B1 B1 SC SC SC SC B1 SC B1 B1 PoP 12hr 20 5 20 30 50 QPF 12hr 0.61 0 0.02 0 0.12 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S S S C C C C C C C C S Tstms S S S S S S S C C C C C C C S Heat index 86 93100 97 92 97 92 Max heat 94 93 102 94 92 98 89 Date 08/18 Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 66 82 64 81 62 83 63 83 Temp 83 83 70 67 77 78 67 64 77 78 65 63 79 80 66 64 79 77 Dewpt 72 73 69 67 69 69 65 63 66 67 64 62 66 66 63 61 65 65 PWind dir SW NE NE NE NE SE S S NW Wind char GN LT LT LT LT LT LT LT LT Avg clouds SC SC SC B1 B1 SC FW SC SC FW FW FW SC FW FW SC SC SC PoP 12hr 20 30 10 5 5 5 5 20 10 Rain shwrs S C S S Tstms S C S S $$ IAZ035-160900- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 432 PM CDT Fri Aug 15 2025 Date 08/15/25 Sat 08/16/25 Sun 08/17/25 Mon 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 72 92 72 Temp 83 77 75 73 72 80 87 92 89 81 78 75 73 81 88 91 87 80 77 76 73 Dewpt 75 72 70 69 69 73 76 77 77 75 71 70 68 73 76 77 76 73 70 69 70 RH 77 85 84 87 90 79 70 62 68 82 79 84 84 77 68 64 70 79 79 79 90 Wind dir S SE SE S S S S S SE S S S S S S S S S S S S Wind spd 8 9 10 8 8 10 11 11 9 8 6 6 5 8 10 10 9 9 8 8 6 Clouds B2 B1 SC B1 B1 SC SC FW FW SC FW SC SC SC SC SC SC SC SC B1 B1 PoP 12hr 20 5 10 20 40 QPF 12hr 0 0 0 0 0.06 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C C C S Tstms S S C C C C S Heat index 90 98106102 87 87 99104 97 Max heat 99 85 99 106 99 99 105 94 Heat Y Y Y Svr Tstorm Date 08/18 Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 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 68 84 64 82 62 83 62 83 Temp 86 85 73 69 81 80 68 66 79 78 66 63 79 79 65 62 80 79 Dewpt 75 75 71 69 72 71 68 65 68 68 65 63 67 68 64 62 68 68 PWind dir SW N N NE NE E SE S W Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW SC SC SC SC SC SC SC FW FW SC SC FW FW SC SC SC PoP 12hr 20 30 20 10 5 5 0 10 10 Rain shwrs S C C S Tstms S C S S $$ IAZ094-160900- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 432 PM CDT Fri Aug 15 2025 Date 08/15/25 Sat 08/16/25 Sun 08/17/25 Mon CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 73 94 73 92 73 Temp 87 80 77 75 74 84 91 93 89 82 78 75 73 83 90 91 88 81 78 76 74 Dewpt 74 73 71 71 70 73 74 73 74 73 72 70 70 74 73 74 73 73 71 71 70 RH 65 79 82 87 87 70 58 52 61 74 82 84 90 74 58 58 61 77 79 85 87 Wind dir S S S S S S S S S S S S S S S S S S S S S Wind spd 8 6 6 6 6 10 11 11 6 6 5 5 5 6 9 9 5 5 5 5 5 Clouds SC FW FW SC FW FW FW FW CL FW FW SC FW FW FW SC SC SC SC B1 SC PoP 12hr 0 0 0 5 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Heat index 95 90101102 98 87 90 98101 97 86 Max heat 101 91 103 105 95 99 102 94 Heat Y Y Y Date 08/18 Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 92 71 87 67 82 63 82 62 84 Temp 89 87 77 72 84 82 71 69 79 78 68 65 78 78 67 64 79 80 Dewpt 73 74 72 71 74 74 71 69 69 69 68 65 65 66 65 63 65 66 PWind dir SW SW W N NE NE NE E N Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC SC B1 SC SC SC B1 SC SC FW FW SC FW FW FW FW FW PoP 12hr 20 30 30 20 10 5 5 5 5 Rain shwrs S S C C S S S Tstms S C C S S S $$ IAZ017-160900- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 432 PM CDT Fri Aug 15 2025 Date 08/15/25 Sat 08/16/25 Sun 08/17/25 Mon 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 89 70 88 70 Temp 81 74 72 71 70 77 84 89 86 79 74 73 71 79 85 88 84 77 75 73 72 Dewpt 74 71 69 68 68 72 75 77 77 76 72 70 69 73 75 76 76 73 70 69 69 RH 79 90 90 90 93 85 74 68 75 91 93 90 93 82 72 68 77 87 84 87 90 Wind dir S SE SE SE S S S S SE S SE S SE SE S S S SE S S S Wind spd 8 6 8 8 8 9 10 9 5 5 5 5 5 6 9 10 9 9 8 6 6 Clouds B2 B1 B1 B1 B2 B1 B1 SC FW FW SC SC SC SC SC FW SC SC B1 B1 SC PoP 12hr 30 10 20 30 50 QPF 12hr 0.62 0 0 0 0.16 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S S S S S S S C C C C C C C Tstms C S S S S S S S S C C C C C C Heat index 87 92101 97 94 99 93 Max heat 94 92 102 96 94 100 89 Date 08/18 Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 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 87 66 80 63 79 60 80 61 80 Temp 84 83 71 68 77 77 67 64 76 76 64 62 76 77 64 62 77 76 Dewpt 74 74 69 67 71 70 65 63 67 67 63 61 66 66 62 61 67 66 PWind dir SW N N NE NE E SE S W Wind char GN LT LT LT LT LT LT LT LT Avg clouds SC SC SC B1 B1 SC SC B1 SC SC FW SC SC FW FW SC SC SC PoP 12hr 30 30 20 5 5 5 5 10 10 Rain shwrs C S C C S Tstms C S C S $$ IAZ049-160900- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 432 PM CDT Fri Aug 15 2025 Date 08/15/25 Sat 08/16/25 Sun 08/17/25 Mon CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 69 93 71 91 71 Temp 84 77 74 72 71 81 88 92 88 80 77 74 72 81 88 90 86 79 77 74 73 Dewpt 74 71 70 68 68 73 75 76 76 73 72 69 69 74 76 76 76 73 70 68 69 RH 72 82 87 87 90 77 66 60 68 79 85 84 90 79 68 64 72 82 79 82 87 Wind dir S SE SE SE SE S S S S S S S S S S S S S S S S Wind spd 8 6 6 6 6 10 11 11 6 6 5 5 5 6 9 8 6 6 6 6 6 Clouds B1 B1 SC SC B1 B1 SC FW FW FW FW FW SC SC SC SC FW SC SC SC SC PoP 12hr 20 5 10 10 30 QPF 12hr 0 0 0 0 0.04 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C C Tstms S S S C C C Heat index 91 98105100 85 87 99102 96 Max heat 99 86 100 106 96 99 103 94 Heat Y Y Y Svr Tstorm Date 08/18 Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 90 69 83 65 80 61 80 61 81 Temp 86 85 73 70 81 78 68 66 76 77 66 63 76 77 65 62 78 78 Dewpt 75 75 71 69 73 72 68 65 68 68 65 61 65 67 63 61 67 68 PWind dir SW SW N NE NE NE E SE W Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW SC SC SC SC SC SC SC SC FW FW SC FW FW FW SC FW PoP 12hr 30 40 20 10 5 5 5 5 5 Rain shwrs C C C S S Tstms C C C S S $$ IAZ086-160900- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 432 PM CDT Fri Aug 15 2025 Date 08/15/25 Sat 08/16/25 Sun 08/17/25 Mon 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 73 93 73 Temp 86 80 77 75 74 84 91 94 89 81 77 75 74 84 90 92 88 81 78 76 75 Dewpt 74 73 72 71 70 74 75 75 77 74 72 71 71 75 75 75 76 73 72 71 70 RH 68 79 85 87 87 72 60 54 68 79 85 87 90 74 62 58 68 77 82 85 84 Wind dir S SE SE SE S S S S S S S SW SE SW SW S S S S S S Wind spd 6 5 6 5 6 8 10 11 5 5 5 5 5 5 6 6 5 5 5 5 5 Clouds FW B1 SC SC SC SC SC FW FW FW CL FW FW FW FW FW FW SC SC SC SC PoP 12hr 5 0 0 5 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S Tstms S S S Heat index 94 91102106102 86 92101104 99 Max heat 101 90 103 109 98 102 105 95 Heat Y Y Y Date 08/18 Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 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 92 72 87 68 81 63 81 62 83 Temp 89 87 76 73 83 82 72 69 77 77 68 65 77 78 67 64 79 79 Dewpt 74 76 72 72 74 75 72 68 69 69 67 64 66 68 66 63 66 69 PWind dir SW SW NW N NE NE NE E NW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC SC B1 SC SC SC B1 B1 SC FW FW SC FW FW FW FW FW PoP 12hr 20 40 30 20 10 5 5 5 5 Rain shwrs S C C C S S S Tstms S C C C S S S $$