Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
154 FOUS53 KDMX 171517 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 1017 AM CDT Mon Aug 17 2026 IAZ060-172100- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 1017 AM CDT Mon Aug 17 2026 Date Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 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 81 66 81 65 79 Temp 78 80 79 72 70 68 67 72 76 79 76 71 69 67 65 70 75 78 75 Dewpt 63 63 67 66 65 65 66 69 71 72 72 70 69 67 65 67 68 68 68 RH 60 56 67 81 84 90 97 90 85 79 87 97100100100 90 79 71 79 Wind dir NW W SW S SW SW SW W SW SW SW W NW N NE NE NE NE E Wind spd 4 4 2 3 4 5 5 6 6 6 4 3 3 3 3 4 5 4 4 Clouds FW FW FW SC SC B1 SC B1 B1 B2 B1 B1 B1 B1 B2 B2 SC B1 SC PoP 12hr 0 20 80 40 5 QPF 12hr 0 0 0.32 0.58 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C D D C C Tstms S C S C C C Date Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 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 62 79 62 82 65 80 62 78 Temp 66 62 76 76 66 63 78 78 69 65 78 77 66 63 76 74 Dewpt 64 62 66 68 64 63 70 72 68 65 68 69 64 62 67 69 PWind dir E SE S SW SW NW N E Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC SC FW FW FW SC FW SC SC SC FW FW FW SC SC PoP 12hr 10 10 20 20 20 10 10 10 Rain shwrs S S S S Tstms S S $$ IAZ039-172100- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 1017 AM CDT Mon Aug 17 2026 Date Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 79 64 79 61 77 Temp 77 79 77 69 67 66 65 71 75 77 74 68 66 63 62 67 74 76 74 Dewpt 62 62 65 64 64 64 65 68 70 70 69 67 66 63 62 64 63 63 64 RH 60 56 67 84 90 93100 90 84 79 84 97100100100 90 69 64 71 Wind dir NW W SW SW S S SW W W W NW NW NW N N NE NE N NE Wind spd 6 6 3 4 5 6 5 8 8 8 5 3 2 3 3 4 4 4 4 Clouds FW FW FW SC SC SC SC B1 B1 SC B1 B1 B1 B1 B1 SC SC SC SC PoP 12hr 0 30 70 20 5 QPF 12hr 0 0 0.21 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C L L S S Tstms S S S C S S Date Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 58 77 60 79 62 77 59 76 Temp 63 59 74 74 64 61 76 75 67 62 75 74 64 60 73 73 Dewpt 60 57 62 64 62 61 67 69 65 62 65 65 61 59 64 65 PWind dir E SE S SW W NW N NE Wind char LT LT LT LT LT GN LT LT Avg clouds SC SC SC FW FW SC SC FW FW FW SC FW FW FW SC SC PoP 12hr 5 10 20 30 20 5 10 10 Rain shwrs S S S C S S Tstms S S $$ IAZ048-172100- Ames-Story IA 41.99N 93.62W Elev. 936 ft 1017 AM CDT Mon Aug 17 2026 Date Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 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 81 65 80 63 78 Temp 77 79 78 70 69 67 66 71 75 78 75 70 68 65 64 68 75 77 74 Dewpt 63 64 68 66 66 66 66 69 71 72 71 70 68 65 64 66 67 67 67 RH 62 60 71 87 90 97100 93 87 82 87100100100100 93 76 71 79 Wind dir W W SW S SW S SW W SW W W NW N N NE NE NE NE NE Wind spd 4 4 2 3 4 5 4 6 6 6 3 2 2 3 3 4 4 4 3 Clouds FW FW FW SC SC B1 SC B1 B1 B1 B2 B1 B1 B1 B2 B2 SC B1 SC PoP 12hr 0 20 80 40 5 QPF 12hr 0 0.04 0.30 0.09 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L L L C C Tstms S C S C C S Date Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 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 60 79 61 81 63 80 60 77 Temp 64 60 76 75 65 62 78 78 68 64 77 75 64 61 75 74 Dewpt 64 60 65 67 65 62 70 72 68 64 68 68 64 61 67 68 PWind dir E SE S SW W NW N E Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC SC FW FW SC SC FW SC FW FW FW FW SC B1 SC PoP 12hr 10 5 20 30 20 5 10 10 Rain shwrs S S C S Tstms S $$ IAZ004-172100- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 1017 AM CDT Mon Aug 17 2026 Date Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 80 62 77 57 75 Temp 78 79 77 68 66 64 63 70 73 75 73 65 62 59 57 66 72 74 72 Dewpt 59 61 65 64 64 63 62 67 68 68 68 65 62 59 57 63 62 62 63 RH 52 54 67 87 93 97 97 90 84 79 84100100100100 90 71 66 73 Wind dir SW SW SW SW SW SW SW W N NW N N N N NE NE E SE N Wind spd 5 8 8 10 9 6 4 4 4 4 5 3 3 3 3 3 3 3 3 Clouds FW SC SC B1 SC SC B2 B2 B1 SC B1 SC SC B1 B1 SC SC SC SC PoP 12hr 5 40 80 10 10 QPF 12hr 0 0.20 0.16 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L L D D C Tstms C C S S S C C Obvis PF PF Date Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 56 77 60 80 59 77 57 75 Temp 60 56 74 74 63 60 77 76 64 59 75 74 61 58 73 73 Dewpt 58 56 63 66 62 60 68 69 62 58 63 64 58 56 64 66 PWind dir S S SW SW W N N E Wind char LT LT LT GN LT LT LT LT Avg clouds SC SC SC FW FW FW SC FW FW FW FW FW FW FW B1 SC PoP 12hr 30 10 20 30 20 5 10 20 Rain shwrs C S S S C S S Tstms C S S $$ IAZ035-172100- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 1017 AM CDT Mon Aug 17 2026 Date Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 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 81 64 79 61 78 Temp 77 80 78 70 67 66 65 69 75 78 75 68 65 63 61 66 74 77 74 Dewpt 63 63 68 66 65 65 65 69 71 72 71 68 65 63 61 65 65 66 67 RH 62 56 71 87 93 97100100 87 82 87100100100100 97 74 69 79 Wind dir W SW S SW SW S SW W W W N N N N N NE E E E Wind spd 4 4 3 4 5 4 3 4 3 3 2 1 1 2 2 3 2 1 1 Clouds FW FW FW SC SC FW SC B2 SC SC B2 B1 B1 B2 B2 B1 SC SC SC PoP 12hr 0 40 80 20 5 QPF 12hr 0 0.05 0.26 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S C L D D S S Tstms S S S C S C S Date Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 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 58 78 60 81 61 79 58 77 Temp 62 58 75 74 63 61 77 77 65 61 76 74 62 59 74 73 Dewpt 61 58 65 68 63 61 71 72 65 61 67 68 61 59 66 68 PWind dir E SE S SW W N N E Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC SC FW FW SC SC FW SC FW SC FW FW SC B1 SC PoP 12hr 10 10 20 20 30 5 10 20 Rain shwrs S S S S C S S Tstms S $$ IAZ094-172100- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 1017 AM CDT Mon Aug 17 2026 Date Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 65 82 66 78 Temp 79 80 78 70 68 67 66 73 77 80 78 72 70 68 66 71 75 77 75 Dewpt 64 64 67 66 65 64 64 68 71 73 73 71 70 68 66 68 70 71 70 RH 60 58 69 87 90 90 93 84 82 79 85 97100100100 90 84 82 84 Wind dir W NW SW S S SW SW SW SW S N E NE N NE NE NE NE NE Wind spd 4 4 1 2 4 5 5 6 8 8 4 4 4 5 4 6 6 6 4 Clouds FW FW FW FW B1 SC SC SC SC SC B2 B1 B2 B2 B2 B2 B1 SC SC PoP 12hr 0 5 70 70 10 QPF 12hr 0 0 0.17 0.97 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L L L L C C Tstms S S S C C C S Date Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 79 62 82 65 81 62 79 Temp 67 63 76 76 66 63 79 79 69 65 79 77 66 63 77 75 Dewpt 67 63 67 69 65 63 69 72 68 65 69 70 65 62 68 70 PWind dir NE E SE SW S NW NE E Wind char LT LT LT LT LT LT LT LT Avg clouds SC B1 SC SC FW FW FW FW FW SC SC FW FW FW SC SC PoP 12hr 20 10 5 20 20 10 10 10 Rain shwrs S S S S Tstms S S S $$ IAZ017-172100- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 1017 AM CDT Mon Aug 17 2026 Date Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 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 77 58 75 Temp 77 77 76 68 66 65 65 71 76 74 72 66 63 60 59 65 72 74 72 Dewpt 61 61 66 64 64 64 64 68 69 68 68 65 63 60 59 62 61 61 63 RH 58 58 71 87 93 97 97 90 79 82 87 97100100100 90 68 64 73 Wind dir W W SW SW SW SW SW W W NW NW N NW N N NE NE N NE Wind spd 5 4 3 5 6 6 4 5 4 4 3 2 2 2 2 3 2 3 2 Clouds FW FW FW SC SC SC SC B1 SC SC B1 SC B1 B1 SC SC SC SC SC PoP 12hr 0 40 80 20 5 QPF 12hr 0 0.04 0.24 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C D D S S Tstms S S S S C S Date Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 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 56 77 58 79 59 77 57 75 Temp 61 57 74 74 63 59 77 75 64 60 74 73 61 58 73 72 Dewpt 58 57 62 65 61 59 68 68 63 60 64 64 59 58 63 64 PWind dir SE S SW SW W NW N E Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC SC FW FW SC SC FW FW SC FW FW FW SC SC SC PoP 12hr 10 20 30 30 20 5 5 10 Rain shwrs S S C S C S S Tstms S S $$ IAZ049-172100- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 1017 AM CDT Mon Aug 17 2026 Date Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 80 63 80 61 78 Temp 76 78 77 68 67 65 64 70 75 78 75 68 66 64 62 67 74 77 74 Dewpt 62 62 66 64 63 64 64 68 70 71 70 68 66 64 62 65 65 64 65 RH 62 58 69 87 87 97100 93 84 79 84100100100100 93 74 64 74 Wind dir NW W W S S S SW W W W W NW N N N NE NE NE NE Wind spd 5 5 2 3 4 5 5 6 5 5 3 2 2 3 3 3 3 3 3 Clouds FW FW FW SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B2 B1 SC SC SC PoP 12hr 0 30 80 40 5 QPF 12hr 0 0 0.26 0.08 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L D D C C Tstms S C S C C S Date Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 58 79 59 81 61 79 58 77 Temp 63 59 75 74 63 60 76 76 66 62 76 74 63 60 74 73 Dewpt 61 58 63 65 62 60 68 69 65 62 66 66 61 59 64 65 PWind dir E SE S SW W NW N NE Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC SC FW FW SC SC SC SC FW FW FW FW SC SC SC PoP 12hr 5 10 20 20 20 5 10 10 Rain shwrs S S S S S Tstms S S $$ IAZ086-172100- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 1017 AM CDT Mon Aug 17 2026 Date Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 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 81 65 82 65 80 Temp 78 79 79 70 68 67 67 74 77 80 78 72 70 67 66 71 76 79 77 Dewpt 64 64 68 65 65 64 65 70 72 73 73 71 70 67 66 69 70 70 70 RH 62 60 69 84 90 90 93 87 85 79 85 97100100100 93 82 74 79 Wind dir NW NW W S S SW SW SW W W W W N N NE NE NE NE NE Wind spd 5 5 1 2 4 5 5 6 6 6 4 4 4 4 3 5 4 4 4 Clouds FW FW FW FW SC SC SC SC SC B1 B2 B2 B1 B1 B1 B1 B1 SC SC PoP 12hr 0 5 60 60 10 QPF 12hr 0 0 0.13 0.55 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S L L L L S S Tstms S S C C C S S Date Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 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 62 80 62 82 64 81 62 79 Temp 66 63 77 77 66 63 78 79 68 65 78 78 66 63 76 76 Dewpt 66 63 67 69 65 63 69 72 68 65 70 70 65 63 68 70 PWind dir NE E SE SW SW NW N NE Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC SC FW SC FW SC FW SC SC SC FW FW FW SC SC PoP 12hr 10 5 10 20 30 10 10 10 Rain shwrs S S S C C Tstms S S $$