Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
771 FOUS53 KDMX 112217 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 517 PM CDT Tue Aug 11 2026 IAZ060-120900- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 517 PM CDT Tue Aug 11 2026 Date 08/11/26 Wed 08/12/26 Thu 08/13/26 Fri 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 89 70 82 68 Temp 90 81 77 75 72 80 86 89 86 78 75 73 71 75 79 82 79 73 72 70 69 Dewpt 75 75 74 72 71 73 75 75 77 75 74 72 71 73 74 74 74 72 71 70 69 RH 62 82 90 90 97 79 70 64 75 91 97 97100 94 85 77 85 97 97100100 Wind dir S SE E E E E E E NE E E E E E E NE NE E E E E Wind spd 5 4 4 5 5 6 8 8 8 8 6 6 6 6 8 10 11 10 8 11 12 Clouds FW SC B1 B1 SC SC B1 SC B1 B2 B1 OV OV OV B2 B2 B2 B1 B2 OV OV PoP 12hr 10 40 70 80 80 QPF 12hr 0.01 0 0.47 0.27 0.78 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L D D C C L L D D C Tstms C C C C S C C C C C C Heat index 101 88 85 95 99 97 88 Max heat 107 96 96 102 96 89 Date 08/14 Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 83 71 87 70 81 65 79 65 83 Temp 79 78 73 71 85 85 74 71 79 78 69 66 76 75 68 66 80 80 Dewpt 73 75 72 71 76 78 73 71 74 73 69 66 69 70 68 66 72 73 PWind dir E SE SW NW N N NE SE S Wind char GN GN LT LT LT LT LT LT LT Avg clouds B2 B2 B1 B2 B2 SC SC B1 B2 B1 B1 SC SC SC B1 B1 B1 SC PoP 12hr 50 60 20 50 30 10 10 10 20 Rain shwrs C S C L S S C C C S S S S Tstms C S C C S C C S S S $$ IAZ039-120900- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 517 PM CDT Tue Aug 11 2026 Date 08/11/26 Wed 08/12/26 Thu 08/13/26 Fri CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 69 84 68 78 65 Temp 83 77 73 70 70 75 81 84 81 74 71 70 69 72 75 78 75 70 68 67 66 Dewpt 76 74 72 70 69 73 74 74 73 72 71 70 69 71 72 71 70 69 67 66 65 RH 80 90 97100 97 94 79 72 77 93100100100 97 90 79 84 97 97 97 97 Wind dir E E E E E SE SE E E E E E E NE E NE E E E E E Wind spd 5 4 3 3 4 6 6 6 5 5 4 4 4 5 6 8 8 6 6 10 12 Clouds SC B1 B1 B1 B2 B2 B1 SC SC B2 B2 B2 OV OV B2 B1 B1 SC B1 B2 B2 PoP 12hr 20 50 70 80 50 QPF 12hr 0.02 0.01 0.12 0.43 0.25 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C S L D D C C C C C C C Tstms S C S S C S S S S S Heat index 91 87 91 86 Max heat 99 87 89 92 Date 08/14 Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 77 66 83 67 79 62 77 62 80 Temp 74 73 68 68 80 80 72 69 77 75 66 63 75 74 65 63 77 76 Dewpt 69 70 68 68 75 75 72 69 72 69 66 63 66 67 65 63 70 70 PWind dir E SE S NW NW N N SE S Wind char GN GN GN LT GN LT LT LT LT Avg clouds B2 B2 B2 B2 OV B1 SC B2 B2 B1 SC SC SC SC SC SC B1 SC PoP 12hr 50 80 40 50 20 10 5 10 20 Rain shwrs C C L D C S C C S S S S Tstms S C C C S S C S S S S $$ IAZ048-120900- Ames-Story IA 41.99N 93.62W Elev. 936 ft 517 PM CDT Tue Aug 11 2026 Date 08/11/26 Wed 08/12/26 Thu 08/13/26 Fri 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 86 69 80 66 Temp 87 79 75 71 72 78 84 86 84 75 73 71 71 74 77 79 77 72 70 68 67 Dewpt 77 76 74 71 71 74 76 77 76 75 73 71 71 72 74 74 73 72 70 68 67 RH 72 91 97100 97 88 77 75 77100100100100 93 90 85 87100100100100 Wind dir SE E E E E E E E NE E E NE SE E E NE NE E E E E Wind spd 4 3 4 4 5 8 8 8 6 6 5 5 5 6 8 9 10 8 6 9 12 Clouds FW B1 B1 B1 B1 B1 SC SC SC B2 B2 B2 OV OV B2 B2 B2 B1 B1 OV OV PoP 12hr 10 40 70 90 80 QPF 12hr 0.04 0 0.59 0.38 0.38 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C L D D C C L L D D C Tstms C C C C C S S C C S S S Heat index 99 92 96 92 Max heat 106 93 94 99 90 85 Date 08/14 Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 80 69 85 68 80 63 78 63 82 Temp 77 76 71 70 83 82 72 70 78 76 67 64 76 75 67 64 79 79 Dewpt 73 74 71 70 77 78 72 70 74 72 67 64 69 70 67 64 72 73 PWind dir E SE S NW NW N NE SE S Wind char GN GN LT LT LT LT LT LT LT Avg clouds OV B2 B2 B2 B2 SC SC B1 B2 B1 B1 SC SC SC B1 B1 B1 SC PoP 12hr 50 60 20 60 20 10 10 10 20 Rain shwrs C S L L S S C L S S S Tstms S S C C S S C C S S $$ IAZ004-120900- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 517 PM CDT Tue Aug 11 2026 Date 08/11/26 Wed 08/12/26 Thu 08/13/26 Fri CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 66 82 66 76 62 Temp 81 74 70 68 68 74 79 82 80 72 70 68 66 70 73 76 74 68 66 64 63 Dewpt 74 72 70 67 67 71 71 72 73 71 68 66 66 68 69 69 69 67 64 62 62 RH 79 93100 97 97 90 77 72 79 97 93 93100 93 87 79 84 97 93 93 97 Wind dir NE NE E E NE NE E E E E E E NE NE NE NE NE NE E E E Wind spd 6 4 4 4 5 8 8 8 6 5 5 5 6 9 10 10 10 9 9 10 11 Clouds SC SC SC B2 B2 B2 FW FW FW OV B2 OV OV B2 B1 B2 SC B1 B1 B2 OV PoP 12hr 20 20 60 50 30 QPF 12hr 0.05 0 0.10 0.13 0.03 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S L C C C C L Tstms S S S C S Heat index 86 Max heat 94 83 87 Date 08/14 Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 76 64 79 62 76 57 77 60 80 Temp 73 70 67 65 76 77 68 64 73 73 61 58 74 74 63 61 77 76 Dewpt 68 70 67 65 73 75 68 64 68 68 61 58 65 68 63 61 70 72 PWind dir E SE SW NW N N S S SW Wind char BZ GN LT LT GN LT LT LT GN Avg clouds B2 B2 B2 B2 OV B2 B1 B1 B1 SC FW FW B1 SC SC SC B1 SC PoP 12hr 60 70 40 50 10 5 5 20 30 Rain shwrs L L L L C C C C S C S Tstms S C C C S C C S S S $$ IAZ035-120900- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 517 PM CDT Tue Aug 11 2026 Date 08/11/26 Wed 08/12/26 Thu 08/13/26 Fri 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 67 79 65 Temp 84 77 73 70 69 77 83 85 83 74 72 69 68 72 76 78 76 70 68 67 66 Dewpt 76 75 72 70 69 73 75 75 75 73 71 69 68 71 73 72 72 70 68 66 66 RH 77 94 97100100 87 77 72 77 97 97100100 97 90 82 87100100 97100 Wind dir E NE E E NE E E E E E E NE NE E E NE E E E E E Wind spd 5 5 4 4 4 6 6 6 5 4 4 4 4 5 6 8 8 6 5 9 11 Clouds SC B1 B1 B1 B2 B2 B2 B1 B1 B2 B2 B2 OV OV B2 B1 B2 B1 B2 OV OV PoP 12hr 30 40 80 80 70 QPF 12hr 0.04 0 0.26 0.48 0.22 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C L D D C C C C L L C Tstms S C C C C S S S S S S C Heat index 93 89 93 90 Max heat 101 87 90 95 87 Date 08/14 Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 79 67 83 66 79 60 78 62 82 Temp 76 74 69 68 81 80 70 67 76 75 64 61 75 75 64 63 78 78 Dewpt 72 73 69 68 76 77 70 67 72 71 64 61 68 69 64 63 72 73 PWind dir E SE SW NW N N SE SE S Wind char GN GN LT LT LT LT LT LT LT Avg clouds OV B2 B2 B2 OV B1 B1 B2 B2 B1 SC SC B1 SC SC SC B1 SC PoP 12hr 50 60 30 60 20 10 5 10 20 Rain shwrs C C L C C S L C S S S Tstms S C C C S S C S S S $$ IAZ094-120900- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 517 PM CDT Tue Aug 11 2026 Date 08/11/26 Wed 08/12/26 Thu 08/13/26 Fri CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 74 91 71 87 69 Temp 89 81 79 76 74 83 89 91 88 80 77 74 72 79 85 87 83 76 73 71 70 Dewpt 76 75 72 69 68 71 72 72 73 74 73 72 71 73 73 73 73 73 72 71 70 RH 66 82 79 79 82 67 57 54 61 82 87 93 97 82 67 63 72 90 97100100 Wind dir S SE SE SE S SE S S E E E E E E E E NE E E E E Wind spd 6 4 4 5 6 8 8 6 5 6 5 6 6 6 8 9 12 12 10 11 10 Wind gust 17 Clouds FW SC SC B1 SC SC SC SC B1 B1 OV B2 OV B2 B1 B1 B1 B1 B2 B2 B2 PoP 12hr 5 30 40 50 60 QPF 12hr 0 0 0.21 0.02 0.12 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C C S S L L L L C Tstms S C C C C S S S C C C C C Heat index 100 87 88 96 99 96 92 94 89 Max heat 102 96 98 101 94 92 94 86 Date 08/14 Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 72 90 71 84 66 80 66 85 Temp 85 82 76 73 88 87 76 72 82 80 70 67 78 77 70 67 81 82 Dewpt 72 73 72 69 72 73 72 70 73 72 70 67 69 69 68 67 71 71 PWind dir SE SE SW W N NE NE E S Wind char GN GN GN LT LT LT LT LT LT Avg clouds B2 SC B1 B1 B1 SC SC B1 B2 B1 B1 B1 SC SC B1 B1 B1 SC PoP 12hr 30 40 20 30 30 20 10 10 20 Rain shwrs C C C S C C C S S S S Tstms C C C S S C S S S S $$ IAZ017-120900- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 517 PM CDT Tue Aug 11 2026 Date 08/11/26 Wed 08/12/26 Thu 08/13/26 Fri 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 67 83 66 77 63 Temp 81 74 71 69 69 74 81 82 81 72 70 68 67 70 75 76 75 69 67 65 64 Dewpt 75 73 71 69 69 72 73 71 73 71 70 68 67 70 70 69 69 67 65 63 63 RH 82 97100100100 93 77 69 77 97100100100100 84 79 82 93 93 93 97 Wind dir E NE E E E SW E E E E E E E E E NE E E E E E Wind spd 4 3 3 2 3 5 6 5 4 3 4 3 4 6 8 6 6 6 6 9 12 Clouds SC SC B1 B2 B2 B2 B1 SC B1 B2 OV B2 OV OV B2 B1 B1 B1 B1 B2 B2 PoP 12hr 20 30 70 60 40 QPF 12hr 0.04 0.04 0.10 0.19 0.08 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C L L S S C C L Tstms S S C S S S Heat index 87 86 87 86 Max heat 94 86 88 Date 08/14 Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 76 64 80 64 77 58 77 60 80 Temp 73 71 67 67 78 78 70 66 75 73 63 60 75 74 62 62 77 76 Dewpt 67 69 67 67 73 74 69 66 69 68 63 60 65 67 62 62 69 71 PWind dir E SE S NW NW N SE S SW Wind char BZ GN GN LT LT LT LT LT LT Avg clouds B2 B2 B2 B2 OV B1 B1 B2 B2 B1 SC SC SC SC SC SC SC SC PoP 12hr 60 80 30 50 20 5 5 20 30 Rain shwrs L C L D C S C C S S C S Tstms C C C S S C S S S $$ IAZ049-120900- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 517 PM CDT Tue Aug 11 2026 Date 08/11/26 Wed 08/12/26 Thu 08/13/26 Fri CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 69 85 67 79 65 Temp 85 77 73 70 69 76 82 85 81 73 71 69 68 72 76 78 75 69 68 67 66 Dewpt 76 75 72 70 69 73 75 75 74 73 71 69 68 71 72 73 71 69 68 67 66 RH 75 94 97100100 90 79 72 79100100100100 97 87 85 87100100100100 Wind dir SE E E E E NE E E NE E E E SE E E NE NE E E E E Wind spd 4 5 3 4 5 6 6 5 5 5 5 4 5 5 5 6 8 8 6 9 11 Clouds SC SC B1 B1 B2 B2 B1 SC B1 B2 B2 OV OV OV B2 B2 B1 B1 B1 OV OV PoP 12hr 10 50 70 90 70 QPF 12hr 0.04 0.04 0.38 0.37 0.35 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S L D D C C C C L L C Tstms C S C C S S S S S S S Heat index 94 88 93 87 Max heat 99 89 91 97 Date 08/14 Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 80 67 85 67 80 61 78 61 81 Temp 76 74 69 68 82 81 71 69 78 75 66 63 75 74 65 62 77 77 Dewpt 70 71 69 68 75 76 71 69 72 70 66 63 67 67 65 62 70 71 PWind dir E SE S NW NW N NE SE S Wind char GN GN LT LT LT LT LT LT LT Avg clouds OV B2 B2 B2 B2 B1 SC B1 B2 B1 SC SC SC SC SC B1 B1 SC PoP 12hr 40 70 20 60 20 10 10 10 20 Rain shwrs C S L L S S C L S S S S Tstms S S C C S S C C S S S $$ IAZ086-120900- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 517 PM CDT Tue Aug 11 2026 Date 08/11/26 Wed 08/12/26 Thu 08/13/26 Fri 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 89 70 84 68 Temp 89 80 76 74 73 80 86 89 86 77 74 72 71 75 81 83 80 74 72 70 69 Dewpt 76 75 74 72 72 74 75 76 77 76 74 72 71 74 75 76 75 74 72 70 69 RH 66 85 94 93 97 82 70 66 75 97100100100 97 82 80 85100100100100 Wind dir SW SE E E E S SE SE E E E E SE SE E NE NE NE E E E Wind spd 6 5 4 5 5 6 6 6 6 8 6 6 6 6 6 8 10 10 8 9 10 Clouds SC SC B1 SC B1 B1 SC SC SC B2 B2 B2 B2 OV B2 B1 B2 B2 B2 OV OV PoP 12hr 10 40 60 80 80 QPF 12hr 0 0.07 0.34 0.38 0.48 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C D D L L L L D D C Tstms C C C C S S C C C C C C Heat index 99 86 95 99 96 87 91 85 Max heat 103 94 96 102 94 87 93 Date 08/14 Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 84 71 90 71 84 65 80 65 84 Temp 81 80 73 72 87 86 75 72 82 80 70 67 77 77 68 66 79 80 Dewpt 74 75 73 71 75 77 74 72 75 74 70 67 69 70 68 66 71 73 PWind dir E SE S SW NW N NE E S Wind char GN GN GN LT LT LT LT LT LT Avg clouds OV B1 B1 B1 B2 SC SC SC B2 B1 B1 SC SC SC B1 B1 B2 SC PoP 12hr 40 40 20 40 20 20 10 10 20 Rain shwrs C C C S S C S S S S S Tstms C C C S S C S S S $$