Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
549 FOUS53 KDMX 121022 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 522 AM CDT Wed Aug 12 2026 IAZ060-122100- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 522 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 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 89 70 83 69 84 Temp 76 80 86 89 86 78 75 73 72 75 80 82 80 74 72 71 69 75 81 84 82 Dewpt 73 73 74 75 76 75 74 73 71 73 75 76 75 73 72 71 69 73 75 77 76 RH 90 79 68 64 72 91 97100 97 94 85 82 85 97100100100 94 82 80 82 Wind dir W E NE NE NE E E E E E E NE NE NE E E E E E E E Wind spd 6 8 6 8 8 8 6 6 6 6 8 9 11 10 9 10 10 11 11 11 11 Clouds B1 B1 B1 B1 SC B1 B1 B1 B2 B2 B2 B2 B1 B1 B2 OV OV OV B2 B1 B1 PoP 12hr 50 70 80 80 50 QPF 12hr 0.05 0.30 0.31 0.86 0.04 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C L L C L C L L D D C C S Tstms C C C C C S S C C C C C C S S Heat index 85 95 99 96 90 85 87 95 89 Max heat 96 102 94 87 94 87 97 Svr Tstorm A Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 71 88 69 81 64 79 63 82 Temp 75 72 85 85 74 71 78 76 68 65 76 75 67 65 79 79 Dewpt 73 72 77 77 73 71 73 71 68 65 68 69 66 65 70 71 PWind dir SE SW NW N N NE SE S Wind char GN LT LT LT LT LT LT LT Avg clouds B1 B1 B1 SC SC B2 B2 B1 B1 SC SC SC SC SC B1 SC PoP 12hr 60 20 50 20 20 5 10 10 Rain shwrs S L S S C C S S S Tstms S C S C C S $$ IAZ039-122100- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 522 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 84 68 78 66 79 Temp 73 76 82 84 81 74 72 70 69 72 76 78 76 71 69 68 67 71 76 78 76 Dewpt 72 72 74 74 73 72 71 70 69 71 73 72 71 70 68 68 67 69 71 72 71 RH 97 87 77 72 77 93 97100100 97 90 82 85 97 97100100 93 85 82 85 Wind dir NE E E E E E E E NE SE E NE E E E E E E E E E Wind spd 5 8 6 6 5 5 4 5 5 5 5 8 8 6 6 8 10 12 13 13 12 Clouds B2 B2 B1 B1 SC SC B2 B2 B1 OV B2 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 PoP 12hr 60 50 90 50 40 QPF 12hr 0.56 0.48 0.64 0.17 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S C L L L C C C C C C C S S C Tstms C C S C C S C C S S S S S C Heat index 88 92 86 Max heat 89 92 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 68 84 67 78 61 77 60 78 Temp 71 69 81 80 71 69 76 74 66 63 75 73 64 62 76 75 Dewpt 69 69 75 75 71 68 71 68 65 62 66 66 64 62 68 69 PWind dir E S NW N N N SE S Wind char GN GN LT GN LT LT LT LT Avg clouds B2 B2 B2 B1 B1 B2 B2 B1 SC SC SC SC FW SC B1 SC PoP 12hr 70 50 60 20 10 10 20 20 Rain shwrs C L C S L C S S S S S Tstms C C C S C C S S $$ IAZ048-122100- Ames-Story IA 41.99N 93.62W Elev. 936 ft 522 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 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 87 69 81 67 82 Temp 73 78 84 86 84 75 73 71 70 74 78 80 78 72 71 69 68 73 78 81 79 Dewpt 72 73 75 76 76 75 73 71 70 72 74 76 73 72 71 69 68 71 74 77 75 RH 97 85 74 72 77100100100100 93 88 88 85100100100100 93 88 88 88 Wind dir N NE NE E E E E E NE E NE NE NE NE NE E E E E E E Wind spd 9 9 8 8 6 6 5 5 5 6 6 8 9 9 6 8 10 11 12 12 12 Clouds B2 B2 SC SC B1 B1 B2 B2 B2 B2 B1 B2 B1 B1 B2 OV OV B2 B2 B1 B2 PoP 12hr 60 70 80 80 50 QPF 12hr 0.15 0.46 0.38 0.44 0.06 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S L L C C C L L D D C C S S S Tstms C C S C C S S C C C C C S S S S S Obvis K Heat index 92 96 92 89 Max heat 94 99 89 88 91 Svr Tstorm A Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 86 67 79 62 78 61 80 Temp 73 70 83 82 72 69 77 75 67 63 76 75 66 63 77 78 Dewpt 73 70 77 77 72 69 73 70 67 63 68 69 66 63 71 72 PWind dir E SW NW N N NE SE S Wind char GN LT LT LT LT LT LT LT Avg clouds B2 B2 B1 SC B1 B2 B2 B1 B1 SC SC SC SC SC B1 B1 PoP 12hr 50 30 50 20 10 10 20 20 Rain shwrs S C S C C C S S S S Tstms S C S S C C S S $$ IAZ004-122100- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 522 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 82 66 77 62 76 Temp 70 74 80 82 80 72 70 68 68 70 74 76 75 68 66 64 63 70 73 75 74 Dewpt 69 70 71 71 72 71 68 67 66 68 70 70 70 68 65 64 63 67 69 72 72 RH 97 87 74 69 77 97 93 97 93 93 87 82 84100 97100100 90 87 90 93 Wind dir NE NE E E E E E NE E NE NE NE NE NE E E E E E E E Wind spd 6 9 8 8 6 6 5 5 6 8 10 11 11 9 8 9 10 13 16 13 12 Clouds B2 B1 SC SC SC B1 B2 OV OV B2 B2 B2 SC SC SC B1 B2 B2 B2 B2 B2 PoP 12hr 20 60 60 30 40 QPF 12hr 0.01 0.31 0.20 0.01 0.03 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C S S C C C C C C L Tstms S S C S S S S S C Obvis K K K K Heat index 87 Max heat 85 88 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 64 79 62 74 55 76 58 79 Temp 68 65 76 76 66 63 72 71 60 57 73 73 62 60 76 76 Dewpt 68 65 73 74 66 63 67 67 60 57 64 66 62 60 68 70 PWind dir SE W NW N NW SW S SW Wind char GN LT LT GN LT LT LT GN Avg clouds B2 B2 B2 B2 B2 B2 B2 SC FW SC SC FW SC SC B2 B1 PoP 12hr 60 60 50 10 5 10 20 20 Rain shwrs L L C L C S S S Tstms C C S C C S S $$ IAZ035-122100- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 522 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 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 86 67 80 65 80 Temp 71 77 83 85 82 74 72 69 69 72 76 78 77 70 68 67 66 71 77 79 77 Dewpt 70 73 74 75 74 73 71 69 69 71 73 74 72 70 68 67 66 70 73 75 74 RH 97 87 74 72 77 97 97100100 97 90 88 85100100100100 97 87 88 90 Wind dir NE NE E E E E E E E E NE NE E NE E E E E E E E Wind spd 6 9 6 6 5 5 4 5 5 5 5 8 8 5 6 8 8 11 12 11 10 Clouds OV B2 B1 B1 SC B1 B2 B2 OV OV B2 SC SC B1 B1 OV OV B2 B2 B2 B2 PoP 12hr 40 60 70 60 40 QPF 12hr 0.15 0.87 0.35 0.29 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S L L C C C C C L L C C S S C Tstms C S C C S S C C C S S S S S C Obvis K K K Heat index 89 93 89 Max heat 90 96 85 85 Svr Tstorm A Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 84 64 77 58 77 59 80 Temp 71 68 81 79 69 66 75 72 63 60 74 73 63 61 77 77 Dewpt 71 68 77 76 69 66 71 69 63 60 67 68 63 61 71 71 PWind dir E SW NW N N E S S Wind char GN LT LT LT LT LT LT LT Avg clouds B2 B2 B2 B1 B2 B2 OV B1 SC SC B1 SC SC SC B2 B1 PoP 12hr 60 50 60 20 10 10 20 20 Rain shwrs C L C C L C S S S S Tstms C C C C C S S S $$ IAZ094-122100- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 522 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 72 89 70 90 Temp 76 83 89 91 89 80 77 74 72 79 86 88 85 77 74 72 71 79 86 90 87 Dewpt 71 71 73 74 74 75 74 73 71 73 74 74 74 74 73 72 71 72 73 73 73 RH 85 67 59 58 61 85 90 97 97 82 68 63 70 90 97100100 79 65 58 63 Wind dir S SE SW SW SE E E E SE E SE NE NE E E E E SE SE SE E Wind spd 6 9 8 8 5 5 5 6 6 8 9 8 11 11 10 9 9 9 10 10 10 Wind gust 17 19 Clouds B1 B1 SC SC SC SC SC B1 B2 B1 B1 B1 B1 SC B2 B2 B2 B2 B1 SC SC PoP 12hr 50 50 50 50 30 QPF 12hr 0.01 0.14 0.03 0.12 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C S S C C C C C C C C Tstms C C C C C S S S C C C C S S C Heat index 88 97101 98 94 98 93 93 98 94 Max heat 98 103 95 94 99 90 95 101 Svr Tstorm A Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 73 90 71 84 65 80 64 84 Temp 77 73 88 87 76 72 82 79 70 67 78 77 68 66 81 81 Dewpt 73 70 73 73 72 70 73 72 70 67 68 68 67 66 69 69 PWind dir SE SW N N NE NE E S Wind char GN GN LT LT LT LT LT LT Avg clouds SC B1 SC SC SC SC B2 B1 B1 B1 SC SC SC SC B1 SC PoP 12hr 30 10 30 20 20 10 10 20 Rain shwrs C C C S S S S S Tstms C C C S S S S S $$ IAZ017-122100- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 522 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 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 83 66 78 63 77 Temp 70 75 81 82 81 72 70 68 68 71 75 76 76 69 67 65 64 69 74 76 75 Dewpt 70 72 73 72 73 71 70 68 68 70 71 70 70 68 66 65 64 68 70 70 70 RH 100 90 77 72 77 97100100100 97 87 82 82 97 97100100 97 87 82 84 Wind dir NE E E E E E E E NE E E E E E E E E E E E E Wind spd 5 8 6 5 4 3 3 4 4 5 6 8 8 6 6 8 10 13 14 13 12 Wind gust 24 Clouds B2 B2 B1 SC SC SC B2 B1 OV B2 B2 B2 SC SC B1 B1 B2 B2 B2 B2 B2 PoP 12hr 20 50 70 30 30 QPF 12hr 0.16 0.18 0.36 0 0.03 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C S S S C C C C C C C Tstms S C S S S S S C Obvis K K K Heat index 86 87 86 Max heat 86 89 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 65 81 63 76 56 77 58 79 Temp 68 67 78 78 69 65 74 73 62 58 74 73 62 61 76 76 Dewpt 68 67 74 73 69 65 68 66 62 58 64 65 62 61 68 69 PWind dir SE S NW N N NW S SW Wind char GN LT LT LT LT LT LT LT Avg clouds B2 B2 B2 B2 B2 B2 B2 B1 SC SC FW SC SC SC B1 B1 PoP 12hr 70 60 60 20 5 20 20 20 Rain shwrs C L L C L C S S S S S Tstms C C C C C S S $$ IAZ049-122100- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 522 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 85 67 80 65 81 Temp 74 76 82 84 81 73 71 69 68 72 77 79 76 70 69 67 66 71 77 80 77 Dewpt 73 72 74 75 74 72 71 69 68 71 73 74 72 70 69 67 66 70 72 74 73 RH 97 87 77 74 79 97100100100 97 87 85 87100100100100 97 85 82 87 Wind dir NE NE E E E E E E N E E NE NE NE E E E E E E E Wind spd 6 9 5 5 6 5 4 5 4 4 5 6 8 8 6 8 9 11 12 11 12 Wind gust 21 Clouds B2 B2 B1 SC SC B1 B1 B1 B2 OV B2 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 50 60 90 80 60 QPF 12hr 0.28 0.30 0.55 0.38 0.06 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S C L L C C C C D D L L S S S Tstms C C S C C S S C C C C S S S S S Heat index 88 92 86 85 Max heat 89 94 85 85 87 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 68 85 66 80 60 78 59 80 Temp 71 69 82 81 71 68 77 74 65 62 76 73 64 62 76 75 Dewpt 70 69 76 75 71 68 71 69 65 62 66 66 64 62 69 70 PWind dir E S NW N N NE SE S Wind char GN LT LT LT LT LT LT LT Avg clouds B2 B2 B1 SC SC B2 B2 B1 SC SC SC SC FW SC B1 B1 PoP 12hr 60 40 50 20 20 10 20 20 Rain shwrs S L C S C C S S S S S Tstms S C C S C C S $$ IAZ086-122100- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 522 AM CDT Wed Aug 12 2026 Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26 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 89 70 85 69 86 Temp 75 79 85 88 85 77 74 72 71 76 81 84 81 74 73 71 70 76 82 86 83 Dewpt 73 74 74 75 76 76 74 72 71 75 77 77 76 74 73 71 70 74 75 77 76 RH 94 85 70 66 75 97100100100 97 88 80 85100100100100 94 79 75 80 Wind dir S SW S S E E E E E E E NE NE E E E E E E E E Wind spd 5 10 6 6 6 6 6 6 5 6 6 8 10 10 8 9 10 10 10 11 11 Clouds B2 B1 B1 SC SC B1 SC B2 B2 B2 B1 B1 SC B1 B2 OV B2 B2 B2 B1 B1 PoP 12hr 60 50 70 70 50 QPF 12hr 0.05 0.25 0.14 0.68 0.04 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L C C L L L L L L D D C C S Tstms C L C C C S S C C C C S C S S Heat index 93 99 95 88 94 88 89 97 92 Max heat 94 100 93 90 97 87 91 99 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 72 90 71 84 65 80 63 83 Temp 75 73 87 86 75 72 82 79 70 66 78 77 67 65 80 80 Dewpt 74 73 77 78 73 72 75 73 70 66 69 70 67 65 70 71 PWind dir SE SW W NW N NE E S Wind char GN GN LT LT LT LT LT LT Avg clouds B1 B1 SC SC SC SC B2 B1 B1 SC SC SC SC SC SC SC PoP 12hr 50 20 40 20 20 10 10 10 Rain shwrs S C S S C S S S S S Tstms S C S S C S S S $$