Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
612 FOUS53 KDMX 191017 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 517 AM CDT Sat Sep 19 2026 IAZ060-192100- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 517 AM CDT Sat Sep 19 2026 Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 62 66 57 62 Temp 71 75 79 81 77 70 69 67 65 63 63 64 63 63 61 59 58 57 58 61 60 Dewpt 70 71 72 73 72 69 67 66 65 63 62 63 61 61 60 58 57 56 56 58 56 RH 97 87 79 77 85 97 93 97100100 97 97 93 93 97 96 96 96 93 90 87 Wind dir SW SW W NW N N N N N NE NE NE NE NE NE NE NE NE NE NE NE Wind spd 4 6 9 8 6 8 6 6 9 10 11 11 11 11 10 10 11 11 11 11 10 Clouds B2 B2 B1 SC B1 B2 OV OV OV OV OV OV OV OV OV OV OV OV OV B2 B2 PoP 12hr 50 40 40 60 60 QPF 12hr 0.07 0.36 0.15 0.26 0.04 Snow 12hr 00-00 00-00 00-00 Drizzle C C Rain shwrs C C S S C C C C S S L L L L L L L L C Tstms C S S C C S S S S S Heat index 86 Max heat 86 Date Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 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 53 61 48 65 53 66 57 68 Temp 56 53 58 58 51 48 60 61 54 54 61 63 58 57 63 65 Dewpt 55 51 52 52 50 48 52 54 54 53 57 58 58 56 59 60 PWind dir NE NE NE E E SE E E Wind char GN GN LT LT LT LT LT LT Avg clouds B2 B2 B1 B1 SC FW FW SC FW SC B1 B1 B1 SC B1 B1 PoP 12hr 30 10 0 0 5 20 10 5 Rain shwrs C S $$ IAZ039-192100- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 517 AM CDT Sat Sep 19 2026 Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 59 66 53 62 Temp 66 72 76 77 72 67 65 63 61 61 64 66 64 60 57 55 53 57 60 62 60 Dewpt 64 70 72 72 69 66 64 63 61 60 59 58 56 56 54 53 53 54 54 52 52 RH 93 93 87 85 90 97 97100100 97 84 75 75 87 90 93100 90 81 70 75 Wind dir E S SW NW N N N NE NE NE NE NE NE NE E NE NE NE E NE NE Wind spd 9 8 8 8 10 10 9 11 13 13 14 14 12 13 12 13 14 13 13 13 11 Wind gust 25 Clouds B2 B2 B2 B1 B2 B1 OV OV OV B2 B2 OV B1 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 60 40 30 40 40 QPF 12hr 0.12 0.47 0 0.11 0.03 Snow 12hr 00-00 00-00 00-00 Drizzle C C C Rain shwrs L C C C C C C C C C C C C C C C S Tstms S S C C S Obvis PF PF Flood A A Date Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 48 61 45 65 49 67 52 69 Temp 51 48 59 58 48 45 63 62 52 50 64 64 55 52 66 66 Dewpt 50 48 49 48 47 45 50 51 52 50 54 54 55 52 58 57 PWind dir NE NE NE E E E E E Wind char GN GN LT LT LT LT LT LT Avg clouds B2 B1 B1 SC SC FW FW FW FW SC B1 B1 SC SC B1 SC PoP 12hr 20 10 0 0 5 10 5 5 Rain shwrs S S $$ IAZ048-192100- Ames-Story IA 41.99N 93.62W Elev. 936 ft 517 AM CDT Sat Sep 19 2026 Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 79 61 66 56 62 Temp 69 74 77 77 73 68 66 64 63 62 63 64 63 61 59 57 56 56 58 60 60 Dewpt 69 71 73 73 70 67 65 64 63 61 62 62 60 60 59 57 56 55 56 56 55 RH 100 90 87 87 90 97 97100100 97 97 93 90 97100100100 96 93 87 84 Wind dir S W W NW N N N N N NE NE NE NE NE NE NE NE NE NE NE NE Wind spd 3 6 8 6 8 9 6 8 10 11 12 12 11 11 9 10 11 11 11 11 9 Clouds B2 B2 B2 B2 B2 OV OV OV OV OV OV OV OV B2 OV OV OV OV OV OV B2 PoP 12hr 50 30 40 50 50 QPF 12hr 0.04 0.25 0.09 0.11 0.03 Snow 12hr 00-00 00-00 00-00 Drizzle C S Rain shwrs C C S S S S C S S S C C C C C C C C S Tstms S S S S S Date Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 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 51 60 46 65 52 66 55 68 Temp 54 51 58 57 49 47 61 61 53 53 62 63 57 56 64 65 Dewpt 54 50 51 51 49 47 52 54 53 53 57 58 57 56 59 60 PWind dir NE NE E E E SE E E Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B1 B1 SC SC FW SC FW SC B2 B1 B1 B1 B2 B1 PoP 12hr 20 10 0 0 5 20 10 5 Rain shwrs S S $$ IAZ004-192100- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 517 AM CDT Sat Sep 19 2026 Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 67 55 66 51 60 Temp 63 63 65 66 64 60 59 57 56 59 64 65 63 57 55 53 51 55 58 60 58 Dewpt 60 63 65 64 62 60 58 57 56 57 57 57 57 55 54 52 50 52 51 52 52 RH 90100100 93 93100 96100100 93 78 75 81 93 96 96 96 90 77 75 80 Wind dir N N N N N N N NE NE NE NE NE NE NE E E E E E E NE Wind spd 5 8 9 11 11 12 11 12 13 14 14 13 12 11 9 9 10 10 10 10 9 Clouds OV OV B2 OV OV OV OV OV B2 OV B2 B1 B2 OV OV B2 OV B2 B2 B2 B2 PoP 12hr 30 20 20 40 40 QPF 12hr 0.09 0.07 0 0.05 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S C C C C C C C C Tstms Obvis PF PF Date Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 46 62 43 65 48 67 51 70 Temp 49 46 59 58 46 44 62 62 50 49 64 65 54 52 67 67 Dewpt 49 45 47 49 46 44 49 52 50 48 55 57 54 51 57 59 PWind dir NE E SE SE SE SE SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 SC SC FW FW FW FW SC SC B1 B1 B1 SC B1 SC PoP 12hr 10 0 0 0 10 20 10 5 Rain shwrs S $$ IAZ035-192100- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 517 AM CDT Sat Sep 19 2026 Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 76 59 67 54 62 Temp 67 72 73 72 68 64 63 61 60 61 64 65 63 59 57 55 54 55 59 61 59 Dewpt 67 70 71 70 67 64 62 61 60 60 60 60 59 58 57 55 53 54 55 55 55 RH 100 93 93 93 97100 97100100 97 87 84 87 96100100 96 96 87 81 87 Wind dir SE NW NW N N N N N N NE NE NE NE NE E E NE E E NE NE Wind spd 3 5 5 8 8 9 9 10 10 11 12 11 9 9 8 9 9 10 9 9 6 Clouds OV OV B2 B2 B2 OV OV OV OV OV B2 OV OV B2 OV OV OV B2 B2 B2 B2 PoP 12hr 40 20 30 50 50 QPF 12hr 0.02 0.15 0.02 0.13 0.07 Snow 12hr 00-00 00-00 00-00 Drizzle S S S S S Rain shwrs C C S S S S S C C C C C C C C S Tstms S S S Obvis PF Date Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 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 49 61 45 66 50 68 53 70 Temp 52 49 58 57 48 46 62 61 52 51 64 64 56 54 67 66 Dewpt 52 49 50 51 48 46 51 53 52 51 56 58 56 54 59 60 PWind dir NE E E SE SE SE SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B1 B1 SC FW FW SC FW FW B1 B2 B1 B1 B1 B2 B1 PoP 12hr 20 5 0 0 10 20 10 5 Rain shwrs S S $$ IAZ094-192100- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 517 AM CDT Sat Sep 19 2026 Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 84 64 69 58 61 Temp 71 75 80 83 78 72 69 67 66 65 68 67 63 63 62 60 58 58 60 60 58 Dewpt 69 70 72 74 73 70 68 67 65 65 66 66 63 63 62 60 58 58 59 59 57 RH 93 84 77 74 85 93 97100 97100 93 97100100100100100100 96 96 96 Wind dir S SW SW SW NW N N N N N NE NE NE NE NE NE NE NE NE NE NE Wind spd 4 9 10 8 4 6 6 6 8 8 10 11 10 10 9 10 11 11 11 11 9 Clouds B2 B1 SC B1 B1 B2 OV OV OV OV B2 B2 B2 OV OV OV OV OV B2 B2 B2 PoP 12hr 40 70 60 60 50 QPF 12hr 0.02 0.87 0.15 0.21 0.03 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S S C L L C C S S C L L L L C C C C S Tstms C S S C C S C S S S S Heat index 89 Max heat 86 90 Date Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 53 59 47 63 51 66 56 67 Temp 56 53 57 56 50 48 60 58 54 53 63 61 58 56 65 62 Dewpt 56 53 55 54 50 48 56 57 53 53 60 60 58 56 63 61 PWind dir NE NE NE NE E E E E Wind char GN GN LT LT LT LT LT LT Avg clouds B2 B2 B2 B1 B1 SC SC SC SC SC B2 B1 B1 B1 B2 B1 PoP 12hr 20 10 0 0 5 20 20 20 Rain shwrs S S S S $$ IAZ017-192100- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 517 AM CDT Sat Sep 19 2026 Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 72 55 65 50 61 Temp 64 68 71 70 65 62 61 59 57 59 63 65 61 57 55 52 50 54 59 61 58 Dewpt 61 68 69 67 65 62 60 59 56 58 57 57 56 55 53 51 50 52 52 51 51 RH 90100 93 90100100 97100 96 96 81 75 84 93 93 96100 93 78 70 77 Wind dir E NW NW N N N N NE NE NE NE NE NE E E E NE E E E NE Wind spd 6 5 6 8 8 10 10 10 11 13 13 13 10 10 9 10 11 10 10 10 6 Clouds B2 OV B2 B2 OV OV OV OV OV B2 B2 B1 B2 B2 OV B2 B2 B2 B2 B2 B2 PoP 12hr 50 20 10 30 40 QPF 12hr 0.06 0.14 0 0.06 0.02 Snow 12hr 00-00 00-00 00-00 Drizzle S Rain shwrs C C C S S S S S C C C C C C S Tstms S S S Obvis PF PF Flood A A Date Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 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 45 61 42 64 46 65 50 68 Temp 50 45 58 56 46 43 62 59 50 48 63 62 54 51 66 64 Dewpt 49 45 47 47 46 43 48 50 50 48 54 54 53 51 56 57 PWind dir E E E E SE SE SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 SC SC FW FW FW FW FW SC B1 B1 SC B1 B1 SC PoP 12hr 20 5 0 0 5 10 5 5 Rain shwrs S $$ IAZ049-192100- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 517 AM CDT Sat Sep 19 2026 Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 79 60 66 54 62 Temp 68 73 77 78 74 67 66 63 61 62 62 64 62 60 57 56 54 56 58 61 59 Dewpt 68 71 72 72 70 67 65 63 61 61 60 60 59 58 56 55 54 54 54 54 54 RH 100 93 85 82 87100 97100100 97 93 87 90 93 96 96100 93 86 78 83 Wind dir SE SW SW W N N N N N NE NE NE NE NE NE NE NE NE NE NE NE Wind spd 6 6 8 6 6 9 8 9 10 12 12 13 12 11 10 10 11 12 11 11 10 Clouds B2 B2 B2 B2 B2 B2 OV B2 OV OV OV B2 B2 B2 B2 B2 B2 OV OV B2 B2 PoP 12hr 60 40 40 50 40 QPF 12hr 0.06 0.24 0.09 0.14 0 Snow 12hr 00-00 00-00 00-00 Drizzle C C Rain shwrs L C C C S C C C S C C C C C C C C C C Tstms S S C C S Date Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 49 60 45 65 49 66 53 69 Temp 52 49 57 57 48 45 60 60 52 51 61 63 55 53 64 65 Dewpt 52 48 49 49 48 45 50 52 52 51 55 56 55 53 58 58 PWind dir NE NE NE E E E E E Wind char GN LT LT LT LT LT LT LT Avg clouds B2 B1 B1 B1 SC FW FW SC FW SC B1 B1 SC SC B1 B1 PoP 12hr 30 10 0 0 5 10 5 5 Rain shwrs C S $$ IAZ086-192100- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 517 AM CDT Sat Sep 19 2026 Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 65 70 59 63 Temp 72 76 82 84 79 73 70 69 67 67 68 67 65 63 62 60 59 60 60 61 62 Dewpt 70 73 74 75 76 72 69 68 67 67 67 66 65 63 62 60 59 60 60 60 59 RH 93 90 77 74 91 97 97 97100100 97 97100100100100100100100 97 90 Wind dir S S SW SW NW N NW NW N NE NE NE NE NE NE NE NE NE NE NE NE Wind spd 5 6 9 8 4 6 5 6 6 9 10 11 11 11 10 10 11 11 12 11 10 Wind gust 20 21 Clouds B2 B2 B1 B1 B1 B1 B2 B2 OV B2 B2 B2 B2 OV OV OV OV OV OV B2 B2 PoP 12hr 40 70 70 70 60 QPF 12hr 0.18 0.74 0.18 0.26 0.04 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S C C C L C L C C C C C L L C C L L C Tstms S C C C C S S S Heat index 88 92 Max heat 89 92 Date Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 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 53 61 48 65 52 68 56 71 Temp 56 53 58 58 51 48 62 61 55 54 64 64 59 56 66 65 Dewpt 56 53 55 54 51 48 56 57 55 54 60 60 59 56 62 62 PWind dir NE NE NE NE NE E E E Wind char GN GN LT LT LT LT LT LT Avg clouds B2 B2 B2 B1 SC FW FW SC FW SC B1 B1 SC SC B1 B1 PoP 12hr 40 10 0 0 0 10 5 5 Rain shwrs C C $$