Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
663 FOUS53 KDMX 161827 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 127 PM CDT Sun Aug 16 2026 IAZ060-162100- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 127 PM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 62 82 67 82 Temp 78 76 70 67 65 63 72 79 81 80 72 70 69 68 74 79 81 76 Dewpt 70 69 67 65 63 62 66 66 66 69 67 66 66 66 69 72 73 72 RH 76 79 90 93 93 97 81 64 60 69 84 87 90 93 84 79 77 87 Wind dir NW N N NW NW NW NW W W S S SW SW SW W W W NW Wind spd 10 6 3 3 3 2 2 3 3 2 4 5 5 5 5 6 5 5 Clouds B2 SC CL CL FW FW FW FW FW FW SC B1 SC B1 SC B1 B1 B2 PoP 12hr 10 0 0 20 80 QPF 12hr 0 0 0 0 0.43 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C D D D Tstms S C C C Heat index 86 Max heat 85 84 88 Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 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 78 61 77 61 81 64 79 Temp 69 66 74 74 66 62 74 74 65 62 78 78 69 65 77 76 Dewpt 68 66 68 68 64 61 66 67 64 62 70 72 68 65 70 71 PWind dir N NE E E SE S SW NW Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B2 B1 B1 SC B1 SC FW FW SC FW FW SC SC FW PoP 12hr 80 20 5 5 5 10 20 10 Rain shwrs D C S S S S S Tstms C C S S S S S $$ IAZ039-162100- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 127 PM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 79 60 80 65 80 Temp 78 76 68 65 62 61 70 77 79 78 70 68 67 66 72 77 78 74 Dewpt 68 67 65 63 61 60 64 64 64 67 66 65 65 65 69 70 70 68 RH 71 74 90 93 97 97 81 64 60 69 87 90 93 97 90 79 76 82 Wind dir NW NW NW NW NW NW NW W W SW S SW SW SW W W W W Wind spd 12 9 5 4 4 3 3 5 6 3 4 5 6 5 6 6 8 6 Clouds B1 SC FW FW FW FW CL CL CL CL FW B1 SC B1 B1 B1 B2 B2 PoP 12hr 0 0 0 30 70 QPF 12hr 0 0 0 0.03 0.32 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C L L L Tstms S S S C C Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 61 76 57 77 59 78 62 78 Temp 66 62 73 72 63 59 74 74 64 60 76 75 66 62 76 75 Dewpt 66 62 64 63 60 57 62 64 61 60 67 68 65 62 67 66 PWind dir NW NE E SE S SW SW NW Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B1 B1 SC SC FW SC FW SC FW SC FW FW SC SC FW PoP 12hr 60 5 0 5 10 20 30 10 Rain shwrs L S S C S Tstms C S S S $$ IAZ048-162100- Ames-Story IA 41.99N 93.62W Elev. 936 ft 127 PM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 60 82 66 81 Temp 77 76 68 66 62 61 71 78 80 79 71 69 68 67 73 78 79 75 Dewpt 69 69 66 64 62 61 66 66 67 69 68 67 66 66 70 72 73 71 RH 76 79 93 93100100 84 67 65 72 90 93 93 97 90 82 82 87 Wind dir NW N N NW NW NW NW W W S S S SW SW W W W W Wind spd 9 5 2 2 2 1 2 4 4 3 3 4 5 4 5 5 5 4 Clouds B2 SC CL CL CL SC FW FW FW CL SC B2 SC B1 B1 B1 B2 B2 PoP 12hr 0 0 0 20 90 QPF 12hr 0 0 0 0.03 0.51 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C D D L Tstms S S C C S Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 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 77 59 79 60 81 63 80 Temp 68 64 74 73 64 61 75 75 64 61 77 77 67 63 78 76 Dewpt 68 64 67 67 63 60 65 67 64 61 70 72 67 63 69 70 PWind dir N NE E E SE S SW NW Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B1 B1 B1 SC SC SC SC FW SC FW SC SC SC FW PoP 12hr 70 10 5 5 10 20 30 5 Rain shwrs L C S S C S Tstms S C S S S $$ IAZ004-162100- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 127 PM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 56 80 62 77 Temp 77 76 64 61 58 58 72 78 80 77 68 66 64 63 71 76 74 70 Dewpt 62 63 61 58 56 55 63 63 65 68 66 64 64 63 68 68 68 68 RH 60 64 90 90 93 90 73 60 60 74 93 93100100 90 76 82 93 Wind dir N N NW W W W SW SW SW SW W SW SW W NW N NE NW Wind spd 10 5 3 3 3 3 4 8 9 8 10 9 6 4 4 4 4 5 Clouds FW FW CL CL FW FW FW FW FW SC SC SC B1 B1 B2 B1 B1 B2 PoP 12hr 0 0 10 30 80 QPF 12hr 0 0 0 0.34 0.34 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C L L D D C Tstms C S S C S Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 56 75 55 77 59 79 59 77 Temp 61 57 72 71 60 57 74 74 63 60 77 76 64 60 74 74 Dewpt 61 57 62 64 59 57 63 66 61 59 69 70 63 59 65 66 PWind dir N SE S S S SW W N Wind char LT LT LT LT LT GN LT LT Avg clouds B1 B1 B1 SC SC SC B1 SC FW FW SC FW FW FW SC FW PoP 12hr 30 5 10 5 20 20 20 5 Rain shwrs C S S S S Tstms S S S S $$ IAZ035-162100- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 127 PM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 82 64 80 Temp 77 76 66 63 60 59 70 78 81 79 71 68 66 65 71 76 78 74 Dewpt 66 67 64 62 60 59 65 66 67 70 67 66 66 65 70 72 72 70 RH 69 74 93 97100100 84 67 63 74 87 93100100 97 87 82 87 Wind dir N N N NW NW W W SW SW S S SW SW W W W W W Wind spd 8 4 1 1 1 0 1 3 4 3 4 5 4 3 3 3 3 3 Clouds SC FW CL CL FW FW FW FW CL FW SC SC SC B2 B1 B1 B2 B2 PoP 12hr 0 0 0 30 80 QPF 12hr 0 0 0 0.15 1.03 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C L L D D C Tstms S S C C C Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 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 77 57 78 59 80 60 80 Temp 65 61 73 73 61 58 74 74 63 60 77 76 65 61 77 75 Dewpt 65 61 65 67 61 58 65 68 62 60 71 72 65 61 69 69 PWind dir N E SE SE S SW W NW Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B1 B1 SC SC B1 SC FW FW SC FW SC SC SC FW PoP 12hr 50 10 10 5 20 20 30 5 Rain shwrs C S S S C S Tstms C S S $$ IAZ094-162100- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 127 PM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 80 62 81 65 83 Temp 79 76 70 68 65 63 73 78 80 79 71 69 67 66 75 80 82 79 Dewpt 72 71 68 66 64 63 66 66 66 68 66 65 65 65 69 72 73 73 RH 79 85 93 93 97100 79 67 62 69 84 87 93 97 82 77 74 82 Wind dir N N N NW NW NW N NW W S S S SW SW SW SW W NE Wind spd 9 6 4 3 3 2 2 2 2 1 3 3 4 4 5 6 6 4 Clouds OV B1 FW FW FW FW FW FW SC FW FW SC B1 FW FW SC SC B1 PoP 12hr 30 5 0 10 50 QPF 12hr 0.01 0 0 0 0.14 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C D Tstms S C C Obvis PF Heat index 87 Max heat 84 85 89 Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 65 77 62 76 61 81 64 80 Temp 70 66 74 75 66 62 74 74 64 62 78 78 69 65 78 76 Dewpt 70 66 70 69 66 62 66 68 64 62 69 71 68 64 69 70 PWind dir N NE NE E E S S NW Wind char LT LT LT LT LT LT LT LT Avg clouds B2 OV B2 B2 B1 B1 B1 SC FW FW SC FW FW SC SC FW PoP 12hr 80 50 20 5 5 5 20 5 Rain shwrs D D C S S S S Tstms C C C S S S S $$ IAZ017-162100- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 127 PM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 77 56 80 63 78 Temp 76 75 66 62 59 57 70 77 78 77 69 67 65 64 72 77 74 71 Dewpt 65 65 62 60 58 57 63 63 64 67 66 65 65 64 69 69 68 67 RH 69 71 87 93 96100 78 62 62 71 90 93100100 90 76 82 87 Wind dir NW NW NW NW NW W W W SW S S SW SW W W NW W W Wind spd 10 6 3 3 3 2 3 5 5 4 5 6 6 4 4 4 4 4 Clouds B1 FW CL CL CL CL CL FW CL FW SC SC B1 B2 B1 B1 B1 B1 PoP 12hr 0 0 0 40 80 QPF 12hr 0 0 0 0.13 0.37 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C D D C Tstms S S S C C Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 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 57 75 55 76 58 78 59 78 Temp 63 58 72 72 60 57 74 73 62 59 76 75 64 60 75 74 Dewpt 62 58 62 62 58 57 62 64 61 59 68 69 64 60 66 66 PWind dir N NE SE S S SW SW NW Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 SC SC SC FW SC SC SC FW SC SC SC SC SC FW PoP 12hr 40 5 0 5 10 30 30 5 Rain shwrs C S S C C S Tstms C S S S $$ IAZ049-162100- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 127 PM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 79 58 81 64 81 Temp 78 75 67 64 61 59 70 76 79 78 69 68 66 66 72 77 79 75 Dewpt 68 67 64 62 60 59 64 64 65 68 65 64 64 65 69 71 71 69 RH 71 76 90 93 97100 81 66 62 71 87 87 93 97 90 82 77 82 Wind dir NW N N NW NW NW NW W W SW S S SW SW W W W W Wind spd 10 5 4 3 3 2 1 3 4 2 3 5 5 5 5 4 5 5 Clouds B2 SC CL CL CL FW FW FW CL CL SC SC SC B1 B1 B1 B2 B2 PoP 12hr 0 0 0 30 80 QPF 12hr 0 0 0 0.02 0.36 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C D D L Tstms S C C C Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 61 77 57 78 58 80 61 80 Temp 66 62 74 72 62 58 74 74 63 59 76 75 66 62 77 75 Dewpt 66 62 65 65 60 58 62 65 61 59 68 69 65 62 67 67 PWind dir NW NE E E S SW SW NW Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B1 SC SC SC B1 SC FW FW SC SC FW SC SC SC PoP 12hr 70 10 5 5 5 20 30 5 Rain shwrs L C S S C S Tstms C S S S S $$ IAZ086-162100- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 127 PM CDT Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 82 62 82 65 83 Temp 80 78 71 68 64 63 72 78 80 80 71 68 67 67 75 80 82 80 Dewpt 74 72 69 67 64 63 67 67 67 69 67 66 65 66 70 73 74 74 RH 82 82 93 97100100 84 69 65 69 87 93 93 97 84 79 77 82 Wind dir NW N N N NW NW NW NW NW N S S S SW SW W W NW Wind spd 10 8 5 4 4 3 3 3 3 0 2 4 5 4 6 6 5 3 Clouds B2 B1 SC FW CL FW CL FW CL FW FW SC SC SC SC SC SC B1 PoP 12hr 50 5 0 10 50 QPF 12hr 0 0 0 0 0.20 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C D Tstms S C C Heat index 85 88 85 Max heat 85 87 84 86 90 Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 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 79 61 78 60 81 64 79 Temp 70 67 75 76 66 62 74 74 64 62 78 79 68 65 77 76 Dewpt 70 67 70 69 65 62 66 68 64 61 69 72 68 65 70 71 PWind dir N NE NE E E S SW NW Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B2 B1 B1 SC SC SC SC FW FW FW FW SC SC FW PoP 12hr 80 30 10 20 5 10 20 10 Rain shwrs D L C S S S S Tstms C S S S S S $$