Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
817 FOUS53 KDMX 191152 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 652 AM CDT Wed Aug 19 2026 IAZ060-192100- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 652 AM CDT Wed Aug 19 2026 Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 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 63 82 66 84 Temp 67 72 78 78 74 70 67 65 63 71 78 81 80 72 70 68 67 75 81 84 81 Dewpt 67 68 70 69 68 66 65 64 63 66 68 68 70 67 66 66 66 69 71 70 72 RH 100 87 76 74 82 87 93 97100 84 71 65 72 84 87 93 97 82 72 63 74 Wind dir NE NE NE NE NE NE N NE NW SE S S S S S SW SW W W NW NW Wind spd 3 4 4 4 4 3 2 2 1 2 4 4 4 4 4 4 4 5 8 8 4 Clouds B1 B1 B1 B2 B1 SC FW FW SC FW FW FW CL FW FW SC SC FW FW FW FW PoP 12hr 30 5 0 30 10 QPF 12hr 0.22 0 0 0.02 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C Tstms S C S C Heat index 86 Max heat 87 86 90 Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 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 66 82 63 78 63 81 65 83 Temp 70 66 79 78 67 63 74 74 66 63 77 78 69 66 80 80 Dewpt 68 66 68 68 64 61 65 66 64 62 68 70 67 65 70 72 PWind dir NW NW NE E E SE SE W Wind char LT LT LT LT LT LT LT LT Avg clouds FW SC FW FW FW SC SC B1 B1 SC SC SC SC SC SC SC PoP 12hr 50 5 5 20 20 10 10 5 Rain shwrs C S S Tstms S S $$ IAZ039-192100- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 652 AM CDT Wed Aug 19 2026 Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 59 80 64 80 Temp 63 70 77 78 74 67 64 61 60 70 77 80 77 70 68 66 65 72 77 80 77 Dewpt 63 64 64 63 64 62 60 59 59 64 65 65 67 66 65 65 65 68 69 68 69 RH 100 81 64 60 71 84 87 93 96 81 67 60 71 87 90 97100 87 76 67 76 Wind dir N NE N N NE NE NE N S S SW S S S S SW SW W W NW NW Wind spd 2 5 4 5 3 2 1 1 1 3 6 9 6 6 6 6 5 8 9 10 5 Clouds B1 SC SC SC B1 FW CL CL FW CL SC FW FW SC SC SC SC SC FW FW FW PoP 12hr 5 0 0 50 10 QPF 12hr 0 0 0 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C S Tstms S C C S Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 78 59 75 59 77 62 80 Temp 67 63 76 74 64 60 73 72 63 60 75 74 66 63 77 77 Dewpt 65 63 65 64 59 57 62 63 61 60 65 67 64 63 69 70 PWind dir NW NW N E SE SE S SW Wind char LT GN LT LT LT LT LT LT Avg clouds FW FW FW FW FW SC SC SC SC SC SC SC SC SC B1 SC PoP 12hr 20 5 0 10 10 5 20 10 Rain shwrs S S Tstms S S $$ IAZ048-192100- Ames-Story IA 41.99N 93.62W Elev. 936 ft 652 AM CDT Wed Aug 19 2026 Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 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 61 82 65 83 Temp 65 71 77 77 74 68 65 63 61 70 78 81 79 71 69 67 65 73 80 83 80 Dewpt 65 66 68 67 68 66 64 63 61 66 67 68 70 68 67 66 65 69 70 70 72 RH 100 84 74 71 82 93 97100100 87 69 65 74 90 93 97100 87 72 65 77 Wind dir NE NE NE NE NE NE NE NE S S S S S S S SW SW W W NW NW Wind spd 3 4 4 4 3 2 1 1 1 3 5 5 4 4 4 4 4 6 6 6 3 Clouds B1 B1 B1 B2 B1 B1 FW FW SC FW FW FW FW FW FW SC FW FW FW FW FW PoP 12hr 20 5 0 40 10 QPF 12hr 0.04 0 0 0.06 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C S Tstms S C C S Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 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 65 81 61 77 61 80 64 82 Temp 68 65 78 76 65 61 74 74 65 61 76 77 68 64 79 79 Dewpt 68 65 67 67 63 59 64 66 64 61 67 70 67 64 70 72 PWind dir NW NW NE E SE SE SE SW Wind char LT LT LT LT LT LT LT LT Avg clouds FW SC FW FW FW SC SC B1 B1 B1 SC SC SC SC SC SC PoP 12hr 40 5 5 10 10 5 10 5 Rain shwrs S C Tstms S S $$ IAZ004-192100- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 652 AM CDT Wed Aug 19 2026 Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 58 82 63 82 Temp 59 68 74 76 75 65 62 60 60 71 78 80 78 70 67 64 63 72 79 82 79 Dewpt 57 58 61 62 63 62 60 59 59 64 66 67 68 66 64 62 61 65 65 65 66 RH 93 70 64 62 66 90 93 96 96 79 67 65 71 87 90 93 93 79 62 56 64 Wind dir N E SE S NW SW SW SW SW SW SW SW SW SW SW W W NW NW NW N Wind spd 2 4 3 3 3 4 4 5 5 10 12 14 11 9 8 8 6 6 6 6 4 Clouds B1 B1 B1 B1 B1 FW FW CL FW FW SC FW SC SC FW FW FW FW FW FW FW PoP 12hr 10 5 10 40 10 QPF 12hr 0 0 0 0.08 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S Tstms C S S Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 61 79 57 77 58 79 62 81 Temp 65 61 76 76 61 58 74 74 62 58 76 77 66 63 78 79 Dewpt 61 59 61 60 54 53 60 62 59 58 64 67 64 62 66 68 PWind dir NW N NE SE SE S SW NW Wind char LT GN LT LT LT GN GN GN Avg clouds FW FW FW FW FW SC B1 SC SC SC SC SC FW SC B1 SC PoP 12hr 20 5 5 10 10 10 10 10 Rain shwrs S Tstms S $$ IAZ035-192100- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 652 AM CDT Wed Aug 19 2026 Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 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 82 64 84 Temp 62 69 75 77 74 66 63 61 60 70 78 80 79 71 68 66 64 72 81 83 79 Dewpt 62 62 65 66 67 64 62 61 60 66 68 69 70 68 66 65 64 68 69 69 71 RH 100 78 71 69 79 93 97100100 87 71 69 74 90 93 97100 87 67 63 77 Wind dir NE E E N NE SE S S S S S S S S SW SW SW W NW NW N Wind spd 4 4 2 2 1 1 1 1 1 4 6 8 5 4 4 4 4 4 4 4 2 Clouds B2 B1 B1 B2 B1 FW FW SC SC FW FW SC SC SC SC SC FW FW FW FW FW PoP 12hr 10 5 5 30 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C Tstms S S C S S Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 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 63 80 59 77 59 80 63 83 Temp 66 63 77 76 63 59 74 74 63 60 76 77 66 63 79 79 Dewpt 65 63 65 66 59 57 63 65 61 60 67 69 65 63 69 71 PWind dir N N NE SE SE S S W Wind char LT LT LT LT LT LT LT LT Avg clouds FW SC FW FW FW SC B1 B1 B1 SC B1 SC SC SC B1 SC PoP 12hr 30 5 5 10 10 10 5 10 Rain shwrs C Tstms C $$ IAZ094-192100- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 652 AM CDT Wed Aug 19 2026 Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 80 64 82 66 85 Temp 69 73 78 80 76 70 68 66 64 72 79 81 80 72 69 68 66 75 82 85 82 Dewpt 69 70 71 70 70 69 67 65 64 67 68 68 69 68 67 66 66 69 70 69 70 RH 100 90 79 72 82 97 97 97100 84 69 65 69 87 93 93100 82 67 59 67 Wind dir E S NE NE NE N N N NE E E SE SE S S S SW SW W W NW Wind spd 3 3 5 5 5 3 3 3 2 3 3 3 2 3 4 4 3 5 6 6 4 Clouds B2 B2 B1 B1 B1 SC SC SC FW FW CL CL CL FW FW FW SC FW FW FW FW PoP 12hr 60 10 0 5 10 QPF 12hr 0.29 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C L Tstms S C C Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 66 84 63 80 64 83 66 84 Temp 70 66 81 80 68 64 77 76 68 64 79 79 70 66 82 82 Dewpt 68 66 68 68 66 62 65 66 64 63 68 70 68 66 70 71 PWind dir N N NE E E SE SE S Wind char LT LT LT LT LT GN LT LT Avg clouds SC SC SC FW FW SC SC B1 B1 B1 SC SC SC SC SC SC PoP 12hr 50 10 5 20 10 10 10 10 Rain shwrs C S Tstms C $$ IAZ017-192100- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 652 AM CDT Wed Aug 19 2026 Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 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 57 80 63 81 Temp 59 68 75 76 74 65 62 59 59 70 78 78 77 69 67 65 63 71 78 80 77 Dewpt 58 59 60 60 63 61 59 58 59 64 65 66 67 66 65 64 63 67 67 66 67 RH 96 73 60 58 69 87 90 96100 81 64 67 71 90 93 97100 87 69 62 71 Wind dir NE E NE NE NE SE S SW SW S SW S SW S SW SW W W NW NW NW Wind spd 3 4 3 2 2 2 2 2 2 6 9 10 8 8 6 6 6 8 8 8 4 Clouds B1 SC B1 SC SC SC FW SC FW FW SC SC SC SC SC SC FW FW FW FW FW PoP 12hr 0 5 5 50 5 QPF 12hr 0 0 0 0.06 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C S Tstms C C C S Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 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 61 78 57 76 57 78 61 81 Temp 65 62 76 74 61 58 73 73 62 58 76 75 65 62 78 78 Dewpt 63 61 62 61 55 55 59 62 59 58 64 66 64 62 67 68 PWind dir NW NW N SE SE S S W Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW SC SC SC B1 SC B1 SC SC B1 B1 SC PoP 12hr 20 5 0 10 10 10 10 20 Rain shwrs S S S Tstms S S S $$ IAZ049-192100- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 652 AM CDT Wed Aug 19 2026 Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 79 58 81 63 83 Temp 63 70 77 78 74 66 63 60 60 70 78 80 77 69 67 65 64 72 79 82 78 Dewpt 63 65 66 65 66 63 61 59 59 64 65 66 68 65 65 64 64 68 69 69 70 RH 100 84 69 64 76 90 93 96 96 81 64 62 74 87 93 97100 87 72 65 76 Wind dir NE NE NE NE NE NE NE NE SE S S S S S S SW SW W W NW NW Wind spd 5 5 3 4 2 2 2 1 1 2 4 5 4 4 5 5 4 6 6 8 4 Clouds B2 B1 B1 B1 SC SC CL CL FW FW SC SC SC SC SC SC SC FW FW FW FW PoP 12hr 10 5 0 30 10 QPF 12hr 0 0 0 0.02 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C Tstms C C S Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 80 59 77 58 79 62 82 Temp 67 63 77 75 63 60 74 73 63 59 75 75 66 63 78 78 Dewpt 65 63 66 65 60 57 62 64 61 59 65 68 65 63 69 70 PWind dir NW NW N E SE SE S SW Wind char LT LT LT LT LT LT LT LT Avg clouds FW SC FW FW FW SC SC B1 SC SC SC SC SC SC B1 SC PoP 12hr 30 10 5 10 10 5 20 5 Rain shwrs C C S Tstms C S S $$ IAZ086-192100- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 652 AM CDT Wed Aug 19 2026 Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 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 80 63 82 65 85 Temp 68 73 78 79 76 70 67 65 63 73 79 81 80 71 68 67 66 75 82 84 81 Dewpt 68 71 72 71 70 68 66 64 63 68 68 68 70 67 66 66 66 71 72 71 72 RH 100 93 82 77 82 93 97 97100 84 69 65 72 87 93 97100 87 72 65 74 Wind dir NE NE NE NE NE NE NE NE NE E E E SE S S S SW SW W W W Wind spd 1 4 4 4 4 3 3 3 2 2 2 3 2 4 4 4 4 5 8 8 4 Clouds B1 B2 B1 B1 B1 SC SC FW FW FW CL FW FW FW FW FW SC SC FW FW FW PoP 12hr 30 10 0 20 10 QPF 12hr 0.11 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S S S Tstms C C S S S S Heat index 87 89 86 Max heat 84 83 85 87 90 Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 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 66 83 63 79 62 82 64 84 Temp 70 66 80 79 67 63 76 76 66 63 78 79 68 65 80 81 Dewpt 68 66 69 69 65 62 66 67 65 63 68 71 68 65 72 73 PWind dir NW NW N E E SE SE SW Wind char LT LT LT LT LT LT LT LT Avg clouds FW SC FW FW FW SC SC SC B1 SC SC SC SC SC SC SC PoP 12hr 30 10 5 10 20 5 10 10 Rain shwrs C S Tstms C S $$