Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
436 FOUS53 KDMX 200632 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 132 AM CDT Thu Aug 20 2026 IAZ060-210900- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 132 AM CDT Thu Aug 20 2026 Date 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 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 63 82 67 85 65 Temp 65 65 71 79 82 79 72 70 68 67 76 83 85 81 73 69 67 65 Dewpt 63 63 66 67 67 69 66 66 66 66 70 71 70 70 68 66 64 63 RH 93 93 84 67 61 72 81 87 93 97 82 67 61 69 84 90 90 93 Wind dir NE NE SE SE S S S S S SW W W NW NW N N NW W Wind spd 3 2 2 4 5 4 4 5 5 5 6 8 8 4 4 3 3 3 Clouds CL FW SC CL FW FW FW FW FW FW FW CL CL CL SC SC SC FW PoP 12hr 0 0 5 10 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S Tstms S S S S Heat index 88 Max heat 82 86 90 91 Date 08/22 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 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 81 61 78 63 78 64 83 66 82 Temp 79 77 65 61 76 74 65 63 76 76 67 65 80 80 70 66 80 79 Dewpt 65 66 61 58 61 64 61 60 65 67 64 63 68 71 67 65 68 70 PWind dir NW N NE SE SE SE SW W NW Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW SC SC SC B1 B1 B1 SC SC SC SC FW SC SC SC SC PoP 12hr 5 0 5 20 20 10 10 20 10 Rain shwrs S S S S Tstms S S S $$ IAZ039-210900- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 132 AM CDT Thu Aug 20 2026 Date 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 58 81 65 82 63 Temp 59 60 70 79 81 77 70 68 66 66 73 80 82 78 70 66 64 63 Dewpt 57 57 62 63 64 66 65 64 65 65 68 69 66 67 64 62 61 60 RH 93 90 76 58 56 69 84 87 97 97 84 69 58 69 81 87 90 90 Wind dir NE NE SE S S S S S SW SW SW W NW NW NW NW N NW Wind spd 2 1 3 4 8 6 5 6 6 6 9 9 11 8 5 4 4 4 Clouds CL FW FW FW SC SC FW FW SC FW FW CL SC FW FW FW FW FW PoP 12hr 0 0 20 10 5 QPF 12hr 0 0 0.03 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S Tstms S S Date 08/22 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 78 58 76 59 75 62 80 64 80 Temp 76 74 62 58 73 73 62 59 73 73 64 62 77 77 67 64 77 76 Dewpt 63 61 56 54 58 61 58 57 62 64 62 61 67 68 64 62 67 67 PWind dir NW N N SE SE SE SW W NW Wind char GN LT LT LT LT LT LT LT LT Avg clouds FW CL FW FW SC SC SC B1 SC SC SC SC B1 SC SC SC SC SC PoP 12hr 0 0 0 5 10 20 20 20 10 Rain shwrs S S S S Tstms S S $$ IAZ048-210900- Ames-Story IA 41.99N 93.62W Elev. 936 ft 132 AM CDT Thu Aug 20 2026 Date 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 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 60 81 66 84 64 Temp 61 62 71 78 81 79 71 69 67 66 75 82 84 80 71 68 65 64 Dewpt 60 61 65 66 67 69 68 67 66 66 69 70 69 70 67 65 63 62 RH 97 97 81 67 63 72 90 93 97100 82 67 61 72 87 90 93 93 Wind dir N NE SE S S S S S SW SW W W NW NW N N N NW Wind spd 3 1 3 4 6 4 4 4 5 5 6 6 8 3 3 2 2 2 Clouds CL FW FW CL CL FW FW SC FW FW CL CL FW CL FW FW FW FW PoP 12hr 0 0 10 5 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S Tstms S S Date 08/22 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 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 59 77 61 77 63 82 64 81 Temp 78 76 63 59 75 74 64 62 75 75 66 64 79 79 68 65 79 78 Dewpt 65 65 59 56 61 64 61 60 65 67 65 62 69 71 66 64 68 70 PWind dir NW N E SE SE SE SW W NW Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW SC SC SC B1 B1 B1 SC SC SC SC SC SC SC SC SC PoP 12hr 5 0 5 10 20 10 20 20 10 Rain shwrs S S S S Tstms S S $$ IAZ004-210900- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 132 AM CDT Thu Aug 20 2026 Date 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 57 81 62 81 60 Temp 58 60 72 79 81 78 69 66 64 62 72 78 80 78 66 64 62 60 Dewpt 56 57 63 65 67 68 67 65 62 60 63 63 62 64 60 58 57 56 RH 93 90 73 62 63 71 93 97 93 93 73 60 54 62 81 81 84 87 Wind dir S S SW SW S SW SW SW W W NW N N N N NW NW NW Wind spd 4 6 10 13 16 11 10 8 8 6 8 9 9 5 4 4 4 6 Clouds CL FW FW SC SC SC FW FW FW CL CL CL CL FW FW FW FW FW PoP 12hr 0 20 20 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S Tstms S S Date 08/22 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 78 55 77 59 78 61 81 61 80 Temp 75 75 59 55 74 74 61 59 75 76 64 62 79 78 66 62 77 77 Dewpt 59 58 52 51 56 60 57 56 63 65 62 60 65 66 61 59 63 64 PWind dir N N SE SE S S W NW NW Wind char GN LT LT LT GN GN GN LT GN Avg clouds FW FW FW SC SC SC SC B1 B1 SC SC SC SC SC SC SC SC SC PoP 12hr 0 0 5 30 20 20 10 20 5 Rain shwrs C S S S S Tstms S S S $$ IAZ035-210900- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 132 AM CDT Thu Aug 20 2026 Date 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 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 58 82 64 83 61 Temp 59 60 70 78 81 79 70 67 65 64 73 80 82 79 69 65 63 61 Dewpt 58 60 65 67 69 70 68 66 65 64 68 68 67 68 64 62 60 59 RH 96100 84 69 67 74 93 97100100 84 67 61 69 84 90 90 93 Wind dir NE SE S S S S S SW SW SW W NW NW N N N NW NW Wind spd 2 1 3 6 10 6 4 4 4 4 4 5 5 3 2 2 2 2 Clouds CL SC FW FW FW SC FW SC FW CL CL CL CL CL FW FW FW FW PoP 12hr 0 0 20 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Date 08/22 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 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 55 78 59 77 62 82 62 81 Temp 77 75 60 56 75 74 62 60 74 74 64 62 79 78 66 63 78 77 Dewpt 63 63 56 54 60 63 59 58 65 67 63 61 69 70 64 61 67 68 PWind dir N N E SE SE S SW W NW Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW SC SC SC SC B1 B2 SC SC SC B1 SC SC SC SC SC PoP 12hr 0 0 5 20 20 20 20 30 10 Rain shwrs S S S S C S Tstms S S $$ IAZ094-210900- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 132 AM CDT Thu Aug 20 2026 Date 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 64 81 66 85 66 Temp 65 66 71 79 81 79 71 69 67 66 76 83 85 82 73 70 68 66 Dewpt 65 65 68 68 67 69 67 66 66 66 70 71 70 72 70 68 66 64 RH 100 97 90 69 63 72 87 90 97100 82 67 61 72 90 93 93 93 Wind dir N NE E SE SE SE S S S SW SW W W NW NW N N N Wind spd 3 2 3 3 3 2 3 4 4 4 6 6 6 3 3 3 3 3 Clouds B1 B1 SC SC FW FW FW FW SC FW FW CL CL FW SC SC SC SC PoP 12hr 0 0 5 5 40 QPF 12hr 0 0 0 0 0.05 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C Tstms S C C C Obvis PF PF Date 08/22 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 81 61 79 63 79 65 83 66 83 Temp 79 78 66 61 77 75 66 64 77 77 68 65 81 80 70 67 81 80 Dewpt 66 66 62 59 61 64 62 60 65 68 65 63 68 70 68 65 67 69 PWind dir N NE E SE SE SE SW W NW Wind char LT LT LT LT GN LT LT LT LT Avg clouds FW FW FW SC B1 B1 B1 B2 B1 SC FW SC SC SC SC SC B1 SC PoP 12hr 10 0 10 30 20 10 5 20 10 Rain shwrs S C S S Tstms S S S $$ IAZ017-210900- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 132 AM CDT Thu Aug 20 2026 Date 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 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 56 81 63 81 60 Temp 57 59 71 79 81 77 69 66 65 63 72 79 80 77 68 64 62 60 Dewpt 57 57 61 63 64 66 66 65 64 63 66 64 63 63 61 59 58 58 RH 100 93 71 58 56 69 90 97 97100 81 60 56 62 78 84 87 93 Wind dir SE S S S S S S SW SW W W NW NW NW NW NW NW NW Wind spd 1 3 5 9 12 9 8 8 8 5 8 10 11 5 3 2 3 4 Clouds CL FW CL FW B1 FW SC SC SC FW FW CL FW CL FW FW FW FW PoP 12hr 0 5 20 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Tstms S Date 08/22 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 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 78 54 77 57 77 60 81 62 81 Temp 76 75 60 55 74 74 61 59 74 74 64 61 79 78 66 63 78 77 Dewpt 59 57 53 52 55 58 57 56 60 63 61 61 65 65 62 61 64 64 PWind dir NW N E SE SE S SW W NW Wind char GN LT LT LT GN LT GN LT LT Avg clouds FW CL CL SC SC SC SC B1 B1 SC SC SC B1 SC SC SC SC FW PoP 12hr 0 0 5 20 20 30 20 20 10 Rain shwrs S S C S S S S Tstms S S S $$ IAZ049-210900- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 132 AM CDT Thu Aug 20 2026 Date 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 58 82 64 84 62 Temp 60 61 70 79 81 77 69 67 66 64 73 81 83 78 69 66 64 62 Dewpt 60 60 63 64 64 66 65 64 64 64 68 69 67 67 64 62 61 60 RH 100 97 78 60 56 69 87 90 93100 84 67 59 69 84 87 90 93 Wind dir NE E SE S S S S S SW SW W W NW NW NW N NW N Wind spd 3 2 2 3 5 5 4 5 5 5 8 8 9 5 4 3 3 3 Clouds CL FW FW FW FW SC FW SC SC SC FW CL FW FW FW FW FW FW PoP 12hr 0 0 5 10 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Date 08/22 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 80 57 77 59 77 61 82 63 81 Temp 77 74 62 57 74 73 62 60 74 73 64 62 78 77 67 64 78 76 Dewpt 63 63 57 54 59 62 58 57 63 64 62 60 67 69 64 62 67 68 PWind dir NW N NE SE SE SE SW W NW Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW CL FW SC SC SC SC B1 B1 SC SC SC B1 SC SC SC SC SC PoP 12hr 0 0 0 10 10 20 10 20 10 Rain shwrs S S S Tstms S S $$ IAZ086-210900- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 132 AM CDT Thu Aug 20 2026 Date 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 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 63 82 66 85 65 Temp 65 65 72 79 81 79 70 68 67 67 76 82 85 82 72 69 66 65 Dewpt 64 65 68 67 67 69 67 66 66 67 71 72 71 72 69 67 65 64 RH 97100 87 67 63 72 90 93 97100 85 72 63 72 90 93 97 97 Wind dir NE NE E E E SE SE S S SW SW W W NW NW NW N NW Wind spd 4 3 3 2 2 3 4 5 5 5 8 9 9 6 5 4 4 3 Clouds FW FW FW CL CL FW FW FW FW FW FW CL SC FW SC SC SC FW PoP 12hr 0 0 5 20 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S Tstms S Obvis PF PF Heat index 88 90 87 Max heat 83 85 90 92 Date 08/22 Sun 08/23/26 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 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 81 61 79 62 79 64 83 66 83 Temp 79 78 65 61 77 76 64 63 76 76 66 65 80 80 69 66 81 80 Dewpt 66 67 62 59 62 65 62 61 65 67 64 63 69 72 68 66 69 71 PWind dir NW N NE E SE SE S SW NW Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW CL FW FW SC SC B1 B1 B1 SC SC SC B1 SC SC SC B1 SC PoP 12hr 5 0 5 5 20 10 10 10 10 Rain shwrs S $$