Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
403 FOUS53 KDMX 202247 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 547 PM CDT Thu Aug 20 2026 IAZ060-210900- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 547 PM CDT Thu Aug 20 2026 Date 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 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 86 66 81 60 Temp 80 73 70 69 67 76 83 86 82 74 70 68 66 73 80 81 78 69 65 62 60 Dewpt 67 67 66 66 66 70 72 71 71 68 66 65 64 66 66 65 65 62 60 58 57 RH 65 81 87 90 97 82 70 61 69 82 87 90 93 79 62 58 64 78 84 87 90 Wind dir S S S S SW W W NW NW N N NW NW N N N N N N N N Wind spd 4 4 6 5 5 8 8 9 5 4 3 3 3 4 8 10 6 4 3 2 2 Clouds FW FW FW FW FW FW CL CL CL FW FW FW FW FW CL CL CL CL FW FW SC PoP 12hr 5 0 10 5 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 89 91 87 Max heat 87 90 94 85 82 84 Date 08/23 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 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 62 78 64 83 67 82 64 81 Temp 76 74 65 63 75 75 67 65 80 81 70 67 79 78 67 64 78 77 Dewpt 61 63 61 60 65 67 64 63 70 72 68 65 68 68 65 63 66 68 PWind dir NE SE SE SE S W NW NW NE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC B1 SC B1 SC FW SC B1 SC B1 B1 SC FW FW FW SC SC PoP 12hr 0 30 20 20 20 20 5 5 10 Rain shwrs C S S S S S S Tstms S S S S S S S $$ IAZ039-210900- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 547 PM CDT Thu Aug 20 2026 Date 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 66 83 63 79 57 Temp 78 71 68 67 66 74 81 83 78 70 67 65 63 72 77 79 75 66 62 59 57 Dewpt 65 65 64 65 65 69 70 68 67 64 62 61 60 64 63 61 60 57 55 53 53 RH 64 81 87 93 97 84 69 61 69 81 84 87 90 76 62 54 60 73 78 80 86 Wind dir S S S S S SW W NW NW NW NW NW NW NW NW NW NW N N N N Wind spd 5 4 8 8 6 9 9 12 9 5 4 4 4 8 12 13 9 6 4 3 2 Clouds FW SC B1 SC SC SC FW FW CL FW FW FW SC FW CL CL CL CL CL CL FW PoP 12hr 20 5 0 0 0 QPF 12hr 0.01 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Tstms S Date 08/23 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 76 58 76 61 80 64 80 61 78 Temp 74 73 61 59 73 73 64 63 77 78 68 65 77 76 65 62 76 75 Dewpt 57 59 57 56 62 63 61 61 67 69 66 63 66 65 62 60 63 65 PWind dir N E SE SE SW W NW N NW Wind char LT LT LT LT LT LT GN LT LT Avg clouds FW FW SC SC B1 B1 FW SC SC SC SC SC SC FW FW FW FW SC PoP 12hr 0 5 10 20 20 30 10 5 5 Rain shwrs S S S S C Tstms S S S $$ IAZ048-210900- Ames-Story IA 41.99N 93.62W Elev. 936 ft 547 PM CDT Thu Aug 20 2026 Date 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 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 85 64 81 58 Temp 79 71 69 68 66 75 83 85 81 71 68 66 64 72 79 81 76 67 63 60 58 Dewpt 67 67 66 66 66 69 72 70 70 67 65 63 63 66 65 64 64 61 59 56 55 RH 67 87 90 93100 82 70 61 69 87 90 90 97 81 62 56 66 81 87 87 90 Wind dir S S S S SW W W NW NW N N NW NW N N N N N N N N Wind spd 4 4 4 5 5 8 8 9 4 3 3 3 3 5 9 9 5 3 2 2 2 Clouds FW FW SC SC FW CL CL CL FW FW FW FW FW FW CL CL CL CL FW FW SC PoP 12hr 10 5 5 5 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 88 90 Max heat 85 89 91 83 Date 08/23 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 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 60 77 63 82 65 81 62 80 Temp 76 74 63 61 75 75 66 64 79 80 69 66 79 77 65 63 78 77 Dewpt 60 62 60 60 65 67 64 63 70 72 68 64 67 68 64 61 66 68 PWind dir NE SE SE SE SW W NW N NE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC B1 SC B1 B1 FW SC B1 SC SC B1 SC FW FW SC SC SC PoP 12hr 0 30 20 20 20 20 5 5 10 Rain shwrs C S S S S S S Tstms S S S S S S $$ IAZ004-210900- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 547 PM CDT Thu Aug 20 2026 Date 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 63 82 61 78 54 Temp 79 70 67 65 63 73 79 81 78 68 64 63 61 71 76 78 75 63 59 56 54 Dewpt 65 66 64 63 62 65 63 63 64 61 58 57 57 61 60 58 58 53 50 49 50 RH 62 87 90 93 97 76 58 54 62 78 81 81 87 71 58 50 55 70 72 77 86 Wind dir SW S SW SW W NW N N N N NW NW NW N N N N N N N NW Wind spd 10 6 9 9 6 8 10 10 5 5 4 5 6 10 11 10 6 5 4 3 2 Clouds B1 SC FW FW SC CL CL FW FW FW FW CL FW FW CL CL CL CL FW FW SC PoP 12hr 20 0 5 0 0 QPF 12hr 0.02 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S Tstms S S Date 08/23 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 77 58 77 62 82 62 79 58 79 Temp 75 74 61 59 75 75 65 63 79 79 66 62 77 76 63 59 76 76 Dewpt 56 59 56 56 63 65 62 61 67 68 61 57 61 62 57 56 61 63 PWind dir S SE S S W NW NW NW SW Wind char LT LT GN GN GN LT GN LT LT Avg clouds SC SC SC SC B1 SC FW SC B1 B1 SC FW FW FW FW FW SC FW PoP 12hr 0 30 20 20 20 10 5 10 20 Rain shwrs C S S S S S Tstms S S S S S $$ IAZ035-210900- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 547 PM CDT Thu Aug 20 2026 Date 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 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 65 85 62 80 55 Temp 78 71 68 66 65 74 82 84 80 70 66 63 62 71 78 80 76 65 60 57 56 Dewpt 67 67 66 65 65 69 69 67 69 64 62 60 60 65 63 62 62 57 55 53 53 RH 69 87 93 97100 84 65 57 69 81 87 90 93 81 60 54 62 75 84 86 90 Wind dir S S S SW SW W NW NW N N N NW NW N N N N N N N NE Wind spd 6 5 5 6 5 6 5 6 4 3 2 2 2 5 8 8 3 2 1 2 1 Clouds FW SC FW FW FW CL CL CL FW FW FW FW FW FW CL CL CL CL FW FW SC PoP 12hr 10 5 5 5 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Date 08/23 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 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 59 78 62 83 63 81 59 80 Temp 75 74 61 59 74 75 64 63 79 79 67 63 78 77 63 60 77 76 Dewpt 59 62 59 58 65 67 63 62 70 72 65 61 65 66 61 59 64 67 PWind dir E SE SE S SW W NW N E Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC B1 SC B2 SC FW SC B1 B1 SC SC SC FW FW SC SC SC PoP 12hr 0 30 20 20 20 10 5 5 10 Rain shwrs C S S S S Tstms S S S S S $$ IAZ094-210900- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 547 PM CDT Thu Aug 20 2026 Date 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 66 85 66 82 61 Temp 80 72 68 67 66 74 82 85 82 74 70 68 66 73 79 82 78 69 65 63 61 Dewpt 67 67 65 66 66 70 72 71 73 70 69 66 65 67 66 66 67 64 62 60 58 RH 65 84 90 97100 87 72 63 74 87 97 93 97 81 64 58 69 84 90 90 90 Wind dir S S S S SW SW W W NW NW N N N N N N N N NE N NE Wind spd 3 3 5 4 4 8 8 6 4 3 3 3 3 4 5 8 6 4 3 3 2 Clouds CL FW FW FW FW FW CL CL FW FW FW SC SC FW FW CL FW FW FW SC SC PoP 12hr 5 10 30 20 0 QPF 12hr 0 0 0.03 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C S S Tstms S C C S Heat index 87 90 87 Max heat 84 88 92 84 82 85 Date 08/23 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 79 63 79 65 83 67 83 64 81 Temp 76 76 66 63 75 77 68 65 79 81 70 67 81 79 68 64 78 78 Dewpt 60 63 61 60 65 68 65 63 70 72 70 66 68 69 66 63 66 68 PWind dir NE E SE SE SE NW NW N NE Wind char LT LT GN LT LT LT LT LT LT Avg clouds SC B1 B2 B1 B1 B1 FW SC B1 B1 SC B1 SC SC FW SC SC SC PoP 12hr 0 30 30 10 20 30 20 10 10 Rain shwrs C C S S S C S S Tstms S S S S S S S $$ IAZ017-210900- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 547 PM CDT Thu Aug 20 2026 Date 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 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 82 60 78 54 Temp 76 69 68 66 65 73 81 81 78 68 65 62 62 71 77 78 75 64 60 56 55 Dewpt 66 65 65 65 64 68 66 64 64 61 59 58 59 62 60 58 58 54 52 51 51 RH 71 87 90 97 97 84 60 56 62 78 81 87 90 73 56 50 55 70 75 83 86 Wind dir S S S SW SW W NW NW NW NW NW NW NW N N N N NW N N N Wind spd 6 6 8 9 8 8 10 11 8 4 3 3 4 9 12 11 6 4 3 2 1 Clouds SC B1 SC SC FW FW CL FW FW FW FW FW CL CL CL CL CL CL FW FW SC PoP 12hr 20 0 0 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Tstms S Date 08/23 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 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 56 76 60 82 63 80 59 79 Temp 75 74 60 58 74 74 64 62 79 79 67 63 78 77 63 60 77 76 Dewpt 55 58 56 56 61 62 61 61 66 67 63 61 62 61 58 57 61 62 PWind dir N SE SE S SW W NW NW W Wind char LT LT LT LT GN LT GN LT LT Avg clouds FW FW SC SC B1 B1 SC SC B1 SC SC SC FW FW FW SC SC SC PoP 12hr 0 20 10 20 20 20 5 5 10 Rain shwrs S S S S S S Tstms S S $$ IAZ049-210900- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 547 PM CDT Thu Aug 20 2026 Date 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 65 85 62 81 56 Temp 78 71 67 66 65 74 82 85 79 70 66 64 64 72 79 81 76 65 61 58 56 Dewpt 65 65 64 64 65 68 70 68 68 64 62 61 60 64 63 61 61 58 56 54 53 RH 64 81 90 93100 82 67 57 69 81 87 90 87 76 58 51 60 78 84 86 90 Wind dir S S S S S W W NW NW N N N NW NW N N N N N N N Wind spd 5 4 6 6 6 8 8 9 6 4 3 3 3 5 10 10 5 4 3 3 2 Clouds FW FW SC FW FW FW CL CL CL FW FW FW SC FW FW CL CL CL FW FW FW PoP 12hr 10 5 5 5 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Date 08/23 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 78 58 78 61 82 64 81 61 80 Temp 75 73 61 59 74 74 64 63 78 78 68 64 79 77 64 61 77 76 Dewpt 57 59 57 57 62 64 62 61 67 70 66 63 65 65 62 59 63 65 PWind dir N E SE SE SW SW NW N N Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW SC SC SC B1 B1 FW SC B1 SC SC SC SC FW FW FW FW SC PoP 12hr 0 10 10 20 20 20 10 5 10 Rain shwrs S S S S S Tstms S S S S S $$ IAZ086-210900- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 547 PM CDT Thu Aug 20 2026 Date 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 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 85 66 82 60 Temp 80 71 68 67 67 76 83 85 83 73 70 67 66 74 79 82 79 69 65 62 60 Dewpt 67 67 66 66 66 71 73 73 73 70 67 65 65 67 67 66 66 63 60 59 58 RH 65 87 93 97 97 85 72 67 72 90 90 93 97 79 67 58 64 81 84 90 93 Wind dir SE SE S S S SW W W NW N N NW NW N N N N N N N N Wind spd 3 4 5 5 5 8 9 9 5 4 4 4 4 5 8 10 6 4 3 3 2 Clouds CL FW FW FW FW FW CL CL FW FW FW SC SC CL CL CL CL CL CL FW FW PoP 12hr 0 5 10 5 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 88 92 89 Max heat 87 89 94 84 83 85 Date 08/23 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 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 61 78 63 83 67 83 64 81 Temp 76 76 64 62 75 76 66 64 79 80 70 67 80 79 67 64 78 78 Dewpt 61 64 61 60 65 67 64 63 70 73 70 67 69 70 66 64 67 69 PWind dir N E SE SE S SW NW NW NW Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW SC SC B1 B1 FW SC SC SC SC SC SC SC SC FW SC SC PoP 12hr 0 5 10 20 20 30 10 5 5 Rain shwrs S S S C Tstms S S S $$