Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
428 FOUS53 KDMX 180607 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 107 AM CDT Tue Aug 18 2026 IAZ060-190900- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 107 AM CDT Tue Aug 18 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu 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 80 65 79 62 Temp 68 68 73 78 80 75 73 70 68 66 71 76 79 75 70 67 64 63 Dewpt 65 65 68 71 73 72 71 69 68 66 68 68 68 68 66 65 64 63 RH 90 90 84 79 79 90 93 97100100 90 76 69 79 87 93100100 Wind dir S SW SW W W NW NE N NE NE NE E E NE NE E NE E Wind spd 5 6 8 9 8 5 2 2 3 3 4 4 4 3 3 2 2 1 Clouds B1 B1 B1 B1 B1 SC B1 SC B1 B1 B1 SC B1 SC B1 SC SC SC PoP 12hr 30 50 30 10 5 QPF 12hr 0.01 0.20 0.06 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C C S Tstms S S S S C S S Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 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 65 83 64 79 61 78 62 78 Temp 77 76 68 65 80 79 70 65 77 75 66 62 76 75 66 63 76 76 Dewpt 67 68 65 65 71 72 68 64 67 67 63 60 66 67 64 62 68 70 PWind dir SE S SW W NW N E E SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW SC FW SC SC FW FW FW FW SC SC B1 B1 B1 SC PoP 12hr 10 20 30 40 5 5 10 10 10 Rain shwrs S S C C C S Tstms S S C S S S $$ IAZ039-190900- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 107 AM CDT Tue Aug 18 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 63 78 61 77 59 Temp 65 66 72 76 77 74 70 66 64 62 68 75 77 74 67 64 61 60 Dewpt 62 64 67 70 71 69 68 65 63 62 64 64 63 64 62 61 59 59 RH 90 93 84 82 82 84 93 97 97100 87 69 62 71 84 90 93 96 Wind dir S S SW W NW NW NW N NW N NE NE N NE E SE E E Wind spd 4 6 8 8 6 5 2 2 2 2 3 4 3 3 1 1 1 1 Clouds SC SC SC B1 B1 B1 SC B1 SC B1 SC FW SC SC B1 SC SC SC PoP 12hr 30 40 30 5 0 QPF 12hr 0.02 0.23 0.02 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C C C Tstms S C C C C C C Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 77 62 79 62 76 58 76 59 76 Temp 76 75 66 63 77 76 67 62 74 73 63 60 73 73 63 60 74 73 Dewpt 64 65 64 63 69 69 65 62 64 63 60 58 62 63 61 59 65 66 PWind dir S S W W NW N E SE SE Wind char LT LT GN LT GN LT LT LT LT Avg clouds SC FW FW SC B1 SC SC SC FW FW FW SC SC SC SC B1 B1 SC PoP 12hr 10 30 30 40 20 0 5 10 10 Rain shwrs S C C C C S S Tstms S C S S S $$ IAZ048-190900- Ames-Story IA 41.99N 93.62W Elev. 936 ft 107 AM CDT Tue Aug 18 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu 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 79 63 78 61 Temp 66 67 71 76 78 75 71 68 66 64 70 76 78 75 68 65 63 62 Dewpt 64 65 68 71 73 72 70 68 66 64 67 68 67 68 66 64 63 62 RH 93 93 90 85 85 90 97100100100 90 76 69 79 93 97100100 Wind dir SW SW SW W W NW N N N N NE E E NE E SE E E Wind spd 4 6 8 8 5 3 1 1 2 2 3 4 3 2 2 1 1 1 Clouds B1 B1 B1 B1 B1 B1 B1 B1 SC B1 SC SC B1 B1 B1 SC SC SC PoP 12hr 30 40 30 10 5 QPF 12hr 0.03 0.23 0.04 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C S C S Tstms S S C C S S S Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 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 82 63 78 59 77 61 78 Temp 76 76 67 64 79 78 68 63 76 74 64 61 75 74 65 61 76 75 Dewpt 67 69 66 64 72 72 67 63 66 66 62 60 65 66 64 61 68 69 PWind dir S S SW NW N N E SE SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW FW SC B1 SC SC SC FW FW SC SC SC SC B1 B1 B1 SC PoP 12hr 10 20 30 40 5 5 10 10 10 Rain shwrs S S C C C S Tstms S S C S S S $$ IAZ004-190900- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 107 AM CDT Tue Aug 18 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 63 78 57 77 57 Temp 66 64 69 75 78 75 66 62 60 59 68 75 77 73 64 62 60 58 Dewpt 64 63 67 68 68 67 64 61 59 57 63 63 63 64 61 59 58 58 RH 93 97 93 79 71 76 93 97 96 93 84 66 62 73 90 90 93100 Wind dir SW W NW NW NW N N NW NW W SE S SW W S S SW S Wind spd 6 6 6 5 5 4 3 3 2 1 2 2 2 3 4 4 4 4 Clouds B1 B1 B1 B1 SC SC SC FW FW SC SC B1 B1 SC SC SC SC SC PoP 12hr 50 50 40 20 10 QPF 12hr 0.01 0.06 0 0.03 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C S S S C S Tstms C S S S S S C S Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 78 61 80 59 75 56 75 57 77 Temp 76 74 66 62 77 76 64 59 74 72 61 57 73 72 62 58 75 74 Dewpt 66 68 64 62 68 68 60 56 60 61 56 55 62 64 60 58 65 67 PWind dir S SW W NW N NE SE SE S Wind char GN GN LT LT GN LT LT LT GN Avg clouds SC FW SC FW SC FW FW FW FW FW FW SC B1 B1 SC SC B1 SC PoP 12hr 20 30 20 30 5 5 10 10 10 Rain shwrs S C C S S C S Tstms S C C S S C S $$ IAZ035-190900- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 107 AM CDT Tue Aug 18 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu 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 80 60 78 59 Temp 67 65 71 76 78 76 69 65 63 62 68 76 78 75 66 63 61 60 Dewpt 64 64 69 72 72 71 68 65 63 61 66 66 66 67 64 62 61 60 RH 90 97 93 87 82 85 97100100 97 93 71 67 76 93 97100100 Wind dir S W SW W W NW N N NW N E E SE S E SE S SE Wind spd 6 5 5 4 4 3 1 1 1 1 2 2 1 1 1 1 1 1 Clouds B1 B1 SC B1 SC B1 B1 SC B1 B1 B1 SC SC B1 SC SC B1 B1 PoP 12hr 40 50 20 20 5 QPF 12hr 0.02 0.08 0.07 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C S S S S S Tstms S S C S S S S Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 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 62 81 60 77 57 77 59 78 Temp 76 74 66 63 79 77 66 61 75 73 62 59 74 73 63 60 74 74 Dewpt 68 70 65 63 72 72 64 60 64 65 59 57 65 67 62 60 68 69 PWind dir S S SW NW N NE E SE SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW FW SC B1 SC SC FW SC FW SC SC B1 B1 B1 B1 B1 SC PoP 12hr 20 20 30 30 5 5 10 10 10 Rain shwrs S S S C S C S Tstms S S C S C S $$ IAZ094-190900- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 107 AM CDT Tue Aug 18 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 66 81 66 79 63 Temp 68 67 73 77 80 77 73 70 69 67 72 77 79 76 69 67 65 63 Dewpt 64 63 67 71 72 72 71 70 69 67 69 70 69 69 68 66 65 63 RH 87 87 81 82 77 85 93100100100 90 79 72 79 97 97100100 Wind dir SW SW SW SW SW NW NE NE E NE NE E NE NE NE NE NE E Wind spd 4 6 8 8 8 4 4 4 3 3 5 5 5 4 4 3 3 2 Clouds B1 SC B1 B1 SC SC SC OV OV B1 B1 SC B1 SC B1 B1 B1 B1 PoP 12hr 20 50 50 10 20 QPF 12hr 0 0.28 0.22 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C S C C C S S S Tstms S S S C C S S Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 79 64 82 65 79 61 79 63 80 Temp 77 76 68 65 80 78 70 65 78 75 65 63 77 75 66 63 77 77 Dewpt 68 69 66 65 71 72 68 64 67 67 63 60 65 67 64 62 68 70 PWind dir SE S SW NW N NE E SE SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW SC FW SC SC FW FW FW SC SC B1 B1 B1 B1 B1 PoP 12hr 5 20 20 30 5 20 20 20 10 Rain shwrs S S S C C S S S S Tstms S S S S C S $$ IAZ017-190900- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 107 AM CDT Tue Aug 18 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu 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 62 77 57 76 57 Temp 64 65 71 75 76 74 68 63 60 59 67 75 76 73 65 62 60 58 Dewpt 62 64 68 69 69 68 65 62 60 59 63 62 61 63 61 59 58 58 RH 93 97 90 82 79 82 90 97100100 87 64 60 71 87 90 93100 Wind dir SW SW W N NW NW NW NW N N E NE W E S S S S Wind spd 6 8 6 4 4 4 2 2 1 1 2 2 2 1 1 1 1 1 Clouds B1 B1 SC B1 B1 B1 SC SC SC SC FW SC SC SC SC SC SC SC PoP 12hr 40 40 40 5 5 QPF 12hr 0.06 0.06 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C S S C C Tstms C S S S S S C Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 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 61 79 59 76 56 75 57 76 Temp 76 73 65 62 77 76 65 60 74 73 61 57 74 72 62 58 74 73 Dewpt 64 66 64 62 69 68 62 59 62 61 57 56 61 63 60 58 65 66 PWind dir S SW W W NW N SE SE S Wind char LT LT LT LT GN LT LT LT LT Avg clouds SC FW FW SC SC SC SC FW FW FW FW SC SC SC SC SC B1 SC PoP 12hr 20 30 40 20 5 5 5 10 10 Rain shwrs S S C C C S S Tstms S S C S S S $$ IAZ049-190900- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 107 AM CDT Tue Aug 18 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 64 79 61 78 58 Temp 65 65 71 76 78 74 70 67 64 62 69 75 78 74 66 63 61 59 Dewpt 63 63 67 70 71 70 68 66 64 62 65 66 65 66 63 61 60 59 RH 93 93 87 82 79 87 93 97100100 87 74 64 76 90 93 97100 Wind dir S S SW W W NW N N N NE NE NE NE NE NE E E SE Wind spd 4 6 9 8 6 4 2 2 2 2 3 2 2 2 1 1 1 0 Clouds SC B1 SC B1 B1 SC SC SC SC B1 B1 SC SC SC B1 SC SC SC PoP 12hr 20 40 30 10 5 QPF 12hr 0.01 0.16 0.04 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C C Tstms S C C C C C Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 79 61 81 61 78 57 77 58 77 Temp 76 75 66 62 78 76 66 62 75 73 62 59 74 73 63 59 75 73 Dewpt 65 66 63 62 70 70 65 61 64 64 60 58 63 64 61 59 66 67 PWind dir S S SW NW NW N E SE SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW FW SC SC SC SC SC FW FW FW SC SC SC SC B1 B1 SC PoP 12hr 10 30 40 40 5 5 10 10 10 Rain shwrs S C S C C S Tstms S C S S S $$ IAZ086-190900- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 107 AM CDT Tue Aug 18 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu 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 65 80 62 Temp 65 68 74 79 81 77 73 70 68 67 72 77 80 77 70 67 64 63 Dewpt 63 65 68 72 73 72 71 70 68 67 69 70 70 70 67 66 64 63 RH 93 90 82 79 77 85 93100100100 90 79 72 79 90 97100100 Wind dir S SW W SW W W N N N NE NE NE NE NE NE NE E E Wind spd 5 6 9 9 8 4 3 3 3 2 3 4 4 3 3 2 2 1 Clouds B1 B1 B1 B1 SC B1 SC B1 B2 B1 B2 SC SC SC B1 SC SC SC PoP 12hr 10 50 40 5 5 QPF 12hr 0 0.15 0.09 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C S Tstms S S C C C S Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 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 63 82 64 79 61 79 61 79 Temp 78 77 68 64 80 79 69 65 78 75 65 62 77 75 65 62 76 76 Dewpt 67 69 66 64 71 72 68 65 68 68 64 61 66 68 64 62 69 71 PWind dir SE S SW W NW N E E SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW SC FW SC SC SC FW FW FW SC SC SC B1 B1 B1 PoP 12hr 0 20 30 40 5 5 10 20 10 Rain shwrs S S C C C S Tstms S S S S C $$