Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
215 FOUS53 KDMX 040813 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 313 AM CDT Fri Sep 4 2026 IAZ060-042100- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 313 AM CDT Fri Sep 4 2026 Date Fri 09/04/26 Sat 09/05/26 Sun 09/06/26 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 96 73 94 72 89 Temp 77 75 84 92 96 91 82 77 75 73 84 93 94 90 80 77 74 72 79 86 89 85 Dewpt 68 68 72 72 72 74 73 72 72 70 73 73 72 73 74 74 73 72 72 73 72 72 RH 74 79 67 52 46 58 74 85 90 90 70 52 49 58 82 90 97100 79 65 57 65 Wind dir S S SW S S S S S S SE E E E E E E SE E SE E E E Wind spd 8 6 9 9 9 4 3 3 2 1 2 3 4 4 5 4 4 5 6 6 8 9 Clouds FW FW SC FW SC SC FW FW FW FW FW FW SC FW FW FW FW SC SC SC SC B1 PoP 12hr 10 5 0 20 40 QPF 12hr 0 0 0 0.02 0.08 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C S Tstms S S S S S C S Heat index 90101104101 87 90101103 99 86 94 96 91 Max heat 83 102 106 99 103 105 98 95 98 Heat Y Y Y Y Y Y Y Y Y Y Y Y Y Date Mon 09/07/26 Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 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 70 89 74 95 75 91 70 86 Temp 75 70 86 86 77 75 93 90 80 75 88 86 75 70 83 81 Dewpt 71 68 70 69 65 64 69 70 68 68 68 68 66 64 63 63 PWind dir SE SE SE S SW S NE NE Wind char GN GN GN GN GN LT LT LT Avg clouds SC SC SC SC SC SC SC FW FW SC SC SC SC SC SC SC PoP 12hr 30 20 10 10 40 20 40 20 Rain shwrs S C S S C C S S C C S S Tstms S C S S S C S S S S $$ IAZ039-042100- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 313 AM CDT Fri Sep 4 2026 Date Fri 09/04/26 Sat 09/05/26 Sun 09/06/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 92 70 89 68 83 Temp 73 71 80 88 91 87 79 74 72 70 80 87 88 84 76 72 70 68 75 80 82 79 Dewpt 69 68 73 76 76 76 74 73 71 70 75 76 76 76 73 71 69 68 71 73 73 72 RH 87 90 79 68 62 70 85 97 97100 85 70 68 77 90 97 97100 87 79 74 79 Wind dir S SE S SW SW SW SE E NE NE E NE E E E E E E SE SE E E Wind spd 6 5 6 8 6 4 3 1 2 2 3 4 5 4 5 5 6 5 8 8 9 8 Clouds FW SC SC FW FW FW SC FW FW SC SC SC FW FW FW FW SC B1 B1 B1 B1 SC PoP 12hr 20 10 0 20 30 QPF 12hr 0 0 0 0 0.05 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C Tstms S S S S Heat index 99103 99 86 98 99 93 88 Max heat 99 105 96 99 102 91 85 89 Heat Y Y Y Y Y Y Y Y Y Y Date Mon 09/07/26 Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 66 82 68 89 70 86 65 80 Temp 70 66 79 79 72 69 85 84 75 71 84 81 70 65 78 76 Dewpt 68 65 70 68 64 62 72 73 69 67 70 70 64 61 63 63 PWind dir SE SE SE S SW W NW N Wind char LT GN GN GN GN LT LT GN Avg clouds SC B1 B1 B1 SC B1 B1 SC SC B1 B1 SC SC B1 SC SC PoP 12hr 20 30 30 40 60 20 30 20 Rain shwrs S C C C C L S C C S Tstms C C C C S S $$ IAZ048-042100- Ames-Story IA 41.99N 93.62W Elev. 936 ft 313 AM CDT Fri Sep 4 2026 Date Fri 09/04/26 Sat 09/05/26 Sun 09/06/26 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 95 70 93 69 88 Temp 74 73 82 91 95 89 78 75 72 71 82 91 92 87 77 74 72 70 77 85 87 83 Dewpt 69 68 73 75 74 77 75 73 71 70 74 74 74 76 76 74 72 70 73 74 74 73 RH 84 84 74 60 51 68 91 94 97 97 77 58 56 70 97100100100 87 70 65 72 Wind dir S S S S SW SE SE S S E E E E E E E SE E SE SE E E Wind spd 6 5 8 9 8 2 2 2 2 1 3 3 4 4 5 4 4 4 6 6 8 8 Clouds FW FW SC FW FW SC FW FW FW FW FW FW SC FW FW SC SC SC B1 B1 B1 B1 PoP 12hr 10 5 0 20 40 QPF 12hr 0 0 0 0.03 0.09 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C Tstms S S S S S C Heat index 87102105101 88101103 99 93 95 89 Max heat 102 106 94 102 105 96 94 96 Heat Y Y Y Y Y Y Y Y Y Y Date Mon 09/07/26 Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 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 67 87 70 94 71 89 67 84 Temp 72 68 84 84 74 72 91 88 76 72 87 84 72 67 81 79 Dewpt 71 68 71 70 66 64 71 72 70 68 69 70 66 63 63 64 PWind dir SE SE SE S SW S NE NE Wind char LT GN GN GN LT LT LT LT Avg clouds SC SC SC SC SC B1 B1 SC SC B1 B1 SC SC B1 SC SC PoP 12hr 30 20 10 20 50 20 40 20 Rain shwrs C S S S C C S C C S Tstms C S S C C S C S $$ IAZ004-042100- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 313 AM CDT Fri Sep 4 2026 Date Fri 09/04/26 Sat 09/05/26 Sun 09/06/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 68 89 69 84 Temp 72 71 81 88 91 88 76 71 69 68 79 86 89 85 75 72 71 69 76 81 83 80 Dewpt 68 67 72 73 72 73 72 71 69 68 72 73 73 71 72 71 70 69 72 73 74 72 RH 87 87 74 61 54 61 87100100100 79 65 59 63 90 97 97100 87 77 74 77 Wind dir S S SW E E E E E E E E SE SE E SE SE SE SE SE SE SE SE Wind spd 8 5 5 4 4 4 3 3 3 3 4 6 8 8 8 6 6 8 9 10 10 10 Clouds FW FW FW CL FW CL FW FW SC SC SC SC FW SC SC SC SC B1 B1 B1 B1 B1 PoP 12hr 5 10 5 30 50 QPF 12hr 0 0 0 0.06 0.14 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C C C Tstms S C S S S C C Heat index 95 99 96 93 97 90 86 90 Max heat 96 100 90 94 98 87 87 90 Date Mon 09/07/26 Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 67 83 70 86 65 84 61 79 Temp 70 67 80 81 73 71 83 83 70 66 81 80 66 62 76 75 Dewpt 68 67 72 70 65 64 71 71 66 62 66 66 59 56 61 62 PWind dir SE SE S SW W W NW NE Wind char GN GN BZ BZ LT LT LT GN Avg clouds SC B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC PoP 12hr 40 50 40 40 20 10 20 20 Rain shwrs C C C S C C S S S S S S Tstms C C C S C S S S S S $$ IAZ035-042100- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 313 AM CDT Fri Sep 4 2026 Date Fri 09/04/26 Sat 09/05/26 Sun 09/06/26 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 93 69 92 69 87 Temp 73 72 82 90 93 89 78 73 72 70 82 89 91 87 76 73 71 70 77 84 86 82 Dewpt 68 67 73 75 75 75 75 73 71 70 74 75 74 75 75 73 71 70 74 75 75 74 RH 84 84 74 62 56 64 91100 97100 77 64 58 68 97100100100 90 74 70 77 Wind dir S S S S SW SE SE SE SE E E E E E E SE SE SE SE SE SE SE Wind spd 6 4 6 5 4 2 2 2 2 2 2 3 5 4 4 4 4 5 6 6 6 8 Clouds SC SC FW CL FW FW FW SC FW FW FW SC FW SC FW SC SC B1 B1 B1 B1 SC PoP 12hr 5 5 0 30 50 QPF 12hr 0 0 0 0.03 0.06 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C C C Tstms S C S S S C C Heat index 88100104100 88 99101 95 92 94 87 Max heat 101 105 94 101 103 92 93 96 Heat Y Y Y Y Y Y Y Y Y Y Date Mon 09/07/26 Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 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 67 86 70 91 69 87 64 82 Temp 71 68 83 83 74 72 87 85 74 69 85 82 69 64 79 77 Dewpt 70 68 73 72 66 64 72 74 68 66 69 68 63 60 63 64 PWind dir SE SE SE S SW SE N NE Wind char LT GN GN GN LT LT LT LT Avg clouds SC B1 B1 B1 SC B1 B2 SC SC B1 B2 SC SC B1 B1 SC PoP 12hr 40 30 30 40 50 10 30 20 Rain shwrs C C C C C C C C S C S S Tstms C C S C S C C C S S $$ IAZ094-042100- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 313 AM CDT Fri Sep 4 2026 Date Fri 09/04/26 Sat 09/05/26 Sun 09/06/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 94 72 95 72 91 Temp 79 75 85 91 94 91 81 78 74 73 85 92 94 90 81 77 74 72 81 88 90 85 Dewpt 67 68 70 71 70 71 71 70 69 68 70 70 69 70 71 72 71 70 71 71 70 71 RH 67 79 61 52 46 52 72 76 84 84 61 49 44 52 72 85 90 93 72 57 52 63 Wind dir S SW SW SW S S S S SW S SW SW SE E E E SE E SE SE SE E Wind spd 8 6 11 11 10 5 3 3 2 2 3 2 3 3 3 3 3 3 5 5 5 5 Clouds FW FW SC FW FW SC SC SC FW FW FW FW FW FW FW FW FW SC SC SC SC B1 PoP 12hr 5 5 5 10 30 QPF 12hr 0 0 0 0 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C Tstms S Heat index 90 98100 97 90 99 99 96 94 96 90 Max heat 84 99 103 95 100 102 94 95 98 Heat Y Y Y Y Y Y Y Y Y Y Y Y Y Date Mon 09/07/26 Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 90 73 95 76 93 71 87 Temp 75 70 87 87 78 75 93 92 82 76 90 88 77 71 85 82 Dewpt 70 67 69 67 64 62 67 66 66 65 66 66 65 63 63 63 PWind dir SE SE SE S SW SW S W Wind char LT GN GN GN GN GN LT LT Avg clouds B1 SC SC SC SC SC SC FW FW SC B1 SC SC SC SC SC PoP 12hr 10 10 5 5 30 20 30 20 Rain shwrs C S S C S S Tstms S S S S $$ IAZ017-042100- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 313 AM CDT Fri Sep 4 2026 Date Fri 09/04/26 Sat 09/05/26 Sun 09/06/26 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 90 67 87 66 82 Temp 71 71 80 86 89 86 75 71 69 67 79 85 87 83 74 71 68 67 74 79 81 78 Dewpt 69 68 73 74 74 76 73 71 69 67 74 74 73 74 73 71 68 67 72 73 73 72 RH 93 90 79 68 61 72 94100100100 85 70 63 74 97100100100 93 82 77 82 Wind dir S S SW SW SW E E E E NE E E E E E SE SE SE SE SE SE SE Wind spd 6 5 5 5 4 2 2 2 2 2 3 4 4 4 4 4 5 6 8 8 8 8 Clouds SC SC FW FW FW FW FW SC SC SC SC SC FW FW FW SC B1 B1 B1 B1 B1 B1 PoP 12hr 20 5 0 30 50 QPF 12hr 0 0 0 0.10 0.28 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C C C Tstms S S C S S S S Heat index 85 94 98 96 92 94 90 86 Max heat 96 101 90 93 94 86 Date Mon 09/07/26 Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 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 64 81 67 86 67 83 62 78 Temp 68 65 78 78 70 69 82 82 72 68 81 78 67 62 75 74 Dewpt 68 65 71 70 65 63 71 72 68 65 67 67 62 59 62 62 PWind dir SE SE SE S SW W W N Wind char LT GN BZ GN LT LT LT GN Avg clouds SC B1 B1 B1 B1 B2 B1 B1 SC B1 B1 SC SC B1 B1 SC PoP 12hr 20 30 40 50 40 10 30 10 Rain shwrs S C C C C C C C C Tstms S S C S C C C S S $$ IAZ049-042100- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 313 AM CDT Fri Sep 4 2026 Date Fri 09/04/26 Sat 09/05/26 Sun 09/06/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 93 69 90 68 86 Temp 73 72 80 90 93 87 78 74 71 70 81 89 90 85 76 73 70 68 75 83 85 81 Dewpt 67 67 73 74 73 75 74 72 71 70 75 75 74 75 75 73 70 68 72 73 72 71 RH 81 84 79 60 52 68 88 93100100 82 64 60 72 97100100100 90 72 65 72 Wind dir S S S SW S S E S SE E E E E E E E E E E E E E Wind spd 6 5 8 9 6 3 3 2 2 1 2 2 3 4 4 4 4 4 6 5 6 8 Clouds FW FW SC FW FW SC SC FW FW FW FW SC FW FW FW FW SC SC B1 B1 B1 SC PoP 12hr 10 10 0 10 30 QPF 12hr 0 0 0 0 0.07 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S Tstms S S S S Heat index 85 99102 97 87 99100 93 88 91 Max heat 101 103 91 100 103 87 90 92 Heat Y Y Y Y Y Y Y Y Y Y Date Mon 09/07/26 Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 66 85 69 92 71 88 66 83 Temp 70 66 82 81 72 70 89 86 75 71 86 82 71 66 79 77 Dewpt 69 65 69 67 63 62 70 71 68 67 69 69 65 61 62 62 PWind dir SE SE SE S SW SW NE N Wind char LT GN GN GN LT LT LT LT Avg clouds SC SC SC SC SC SC SC SC SC B1 B1 SC SC SC SC SC PoP 12hr 20 20 10 30 60 20 30 20 Rain shwrs S S C C L S S C S S Tstms S C C C S S S $$ IAZ086-042100- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 313 AM CDT Fri Sep 4 2026 Date Fri 09/04/26 Sat 09/05/26 Sun 09/06/26 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 96 74 95 71 88 Temp 77 75 86 93 95 92 81 78 75 74 85 93 95 90 79 76 73 71 79 86 88 84 Dewpt 69 69 73 72 71 73 72 72 71 71 74 73 72 75 75 75 73 71 73 73 73 73 RH 76 82 65 51 46 54 74 82 87 90 70 52 48 62 88 97100100 82 65 61 70 Wind dir S SW SW SW SW S SW S S SE N NE NE E E E E E E E E E Wind spd 6 6 9 10 9 4 4 3 2 2 2 2 3 4 4 4 5 4 5 6 8 9 Clouds FW FW FW FW FW SC SC FW FW FW FW FW FW FW FW FW FW SC SC SC SC SC PoP 12hr 5 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 93101103100 93102104 99 93 96 91 Max heat 102 104 95 102 105 92 94 97 Heat Y Y Y Y Y Y Y Y Y Y Y Y Y Date Mon 09/07/26 Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 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 69 88 72 94 76 92 71 87 Temp 73 69 84 85 75 73 92 91 81 76 90 87 76 71 84 82 Dewpt 70 67 69 68 64 62 69 70 67 68 70 70 68 66 65 65 PWind dir E SE SE S S SW S NW Wind char LT GN GN GN GN LT LT LT Avg clouds SC SC SC SC FW SC SC SC FW SC B1 SC SC SC B1 SC PoP 12hr 20 10 5 10 40 20 40 20 Rain shwrs S S C S S C S S Tstms S S S S S $$