Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
520 FOUS53 KDMX 162257 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 557 PM CDT Sun Aug 16 2026 IAZ060-170900- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 557 PM CDT Sun Aug 16 2026 Date 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed 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 82 67 82 65 Temp 76 70 67 65 63 72 79 81 80 72 70 69 68 74 79 81 76 71 69 67 66 Dewpt 68 67 65 63 62 66 66 66 69 67 66 66 66 69 72 73 72 70 68 67 66 RH 76 90 93 93 97 81 64 60 69 84 87 90 93 84 79 77 87 97 97100100 Wind dir N N NW NW NW NW NW W SW S SW SW SW W W W NW N N N NE Wind spd 8 3 3 3 2 2 4 3 2 4 5 5 5 5 6 5 5 6 4 4 4 Clouds SC FW FW FW FW FW FW FW FW SC B1 SC B1 SC B1 B1 B2 OV B2 B2 B2 PoP 12hr 0 0 20 80 80 QPF 12hr 0 0 0 0.43 1.24 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C D D D D C C S Tstms S C C C S C C S Heat index 86 Max heat 85 84 88 Date 08/19 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 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 77 61 81 64 79 63 77 Temp 74 74 66 62 74 74 65 62 78 78 69 65 77 76 67 64 75 75 Dewpt 68 68 64 61 66 67 64 62 70 72 68 65 70 71 66 63 69 71 PWind dir NE E E SE S SW NW NE SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 B1 B1 SC B1 SC FW FW SC FW FW SC SC FW FW SC SC SC PoP 12hr 20 5 5 5 10 20 10 10 10 Rain shwrs S S S S S Tstms S S S S S $$ IAZ039-170900- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 557 PM CDT Sun Aug 16 2026 Date 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 60 80 65 80 61 Temp 75 69 65 62 61 70 77 79 78 70 68 67 66 72 77 78 74 68 66 64 62 Dewpt 66 64 63 61 60 64 64 64 67 66 65 65 65 69 70 70 68 67 66 63 62 RH 74 84 93 97 97 81 64 60 69 87 90 93 97 90 79 76 82 97100 97100 Wind dir NW NW NW NW NW NW NW W W SW SW SW SW W W W W W N N N Wind spd 9 5 5 4 3 3 5 6 3 4 5 6 5 6 6 8 6 3 2 3 3 Clouds B1 FW FW SC FW FW FW FW FW SC B1 SC B1 B1 B1 B2 B2 B2 B1 B1 B1 PoP 12hr 0 0 30 70 60 QPF 12hr 0 0 0.03 0.32 0.43 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C L L L L Tstms S S S C C S Date 08/19 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 76 57 77 59 78 62 78 60 77 Temp 73 72 63 59 74 74 64 60 76 75 66 62 76 75 65 61 75 74 Dewpt 64 63 60 57 62 64 61 60 67 68 65 62 67 66 63 61 66 67 PWind dir NE E SE S SW SW NW N SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 SC SC FW SC FW SC FW SC FW FW SC SC FW FW SC SC SC PoP 12hr 5 0 5 10 20 30 10 10 5 Rain shwrs S S C S Tstms S S S $$ IAZ048-170900- Ames-Story IA 41.99N 93.62W Elev. 936 ft 557 PM CDT Sun Aug 16 2026 Date 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed 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 82 66 81 63 Temp 75 69 66 62 61 71 78 80 79 71 69 68 67 73 78 79 75 70 68 65 64 Dewpt 67 66 64 62 61 66 66 67 69 68 67 66 66 70 72 73 71 70 68 65 64 RH 76 90 93100100 84 67 65 72 90 93 93 97 90 82 82 87100100100100 Wind dir N NW NW NW NW NW W W SW S S SW SW W W W W NE N NE NE Wind spd 6 3 3 3 1 2 4 4 2 3 4 5 4 5 5 5 4 3 2 3 3 Clouds B1 FW FW FW FW FW FW FW FW SC B2 SC B1 B1 B1 B2 B2 B2 B2 B2 B2 PoP 12hr 0 0 20 90 70 QPF 12hr 0 0 0.03 0.51 0.78 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C D D L L C C Tstms S S C C S C S C Date 08/19 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 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 59 79 60 81 63 80 62 77 Temp 74 73 64 61 75 75 64 61 77 77 67 63 78 76 66 62 75 74 Dewpt 67 67 63 60 65 67 64 61 70 72 67 63 69 70 65 62 69 70 PWind dir NE E E SE S SW NW NE SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 SC SC SC SC FW SC FW SC SC SC FW SC SC SC SC PoP 12hr 10 5 5 10 20 30 5 10 10 Rain shwrs S S C S Tstms S S S $$ IAZ004-170900- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 557 PM CDT Sun Aug 16 2026 Date 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 56 80 62 77 56 Temp 74 65 61 58 58 72 78 80 77 68 66 64 63 71 76 74 70 64 61 59 57 Dewpt 61 60 58 56 55 63 63 65 68 66 64 64 63 68 68 68 68 64 61 59 57 RH 64 84 90 93 90 73 60 60 74 93 93100100 90 76 82 93100100100100 Wind dir N NW W W W W W SW SW SW SW SW W NW N NE NW N NW N NE Wind spd 6 3 4 4 3 4 6 9 8 10 9 6 4 4 4 4 5 3 3 3 3 Clouds SC CL FW SC CL FW CL FW SC B1 SC B1 B1 B2 B1 B1 B2 B1 B1 SC B1 PoP 12hr 0 10 30 80 30 QPF 12hr 0 0 0.34 0.34 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C L L D D C C Tstms C S S C S Date 08/19 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 75 55 77 59 79 59 77 58 76 Temp 72 71 60 57 74 74 63 60 77 76 64 60 74 74 62 59 74 73 Dewpt 62 64 59 57 63 66 61 59 69 70 63 59 65 66 60 58 66 68 PWind dir SE S S S SW W N SE S Wind char LT LT LT LT GN LT LT LT LT Avg clouds B1 SC SC SC B1 SC FW FW SC FW FW FW SC FW FW SC B1 SC PoP 12hr 5 10 5 20 20 20 5 10 10 Rain shwrs S S S S Tstms S S S $$ IAZ035-170900- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 557 PM CDT Sun Aug 16 2026 Date 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed 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 82 64 80 60 Temp 75 67 63 60 59 70 78 81 79 71 68 66 65 71 76 78 74 67 65 62 61 Dewpt 65 63 62 60 59 65 66 67 70 67 66 66 65 70 72 72 70 67 65 62 61 RH 71 87 97100100 84 67 63 74 87 93100100 97 87 82 87100100100100 Wind dir N N NW NW W W W W SW S SW SW W W W W W N NE NE NE Wind spd 4 2 2 2 1 2 3 4 3 4 5 4 3 3 3 3 3 2 1 2 2 Clouds SC FW FW SC FW FW FW FW FW SC SC SC B2 B1 B1 B2 B2 B2 B2 B2 B2 PoP 12hr 0 0 30 80 50 QPF 12hr 0 0 0.15 1.03 0.40 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C L L D D C C Tstms S S C C C S Date 08/19 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 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 57 78 59 80 60 80 60 77 Temp 73 73 61 58 74 74 63 60 77 76 65 61 77 75 64 60 74 73 Dewpt 65 67 61 58 65 68 62 60 71 72 65 61 69 69 63 60 68 70 PWind dir E SE SE S SW W NW NE SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B1 SC SC B1 SC FW FW SC FW SC SC SC FW SC SC B1 SC PoP 12hr 10 10 5 20 20 30 5 10 10 Rain shwrs S S S C S Tstms S S $$ IAZ094-170900- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 557 PM CDT Sun Aug 16 2026 Date 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 62 81 65 83 65 Temp 75 71 68 65 63 73 78 80 79 71 69 67 66 75 80 82 79 72 70 68 66 Dewpt 71 68 66 64 63 66 66 66 68 66 65 65 65 69 72 73 73 71 70 68 66 RH 87 90 93 97100 79 67 62 69 84 87 93 97 82 77 74 82 97100100100 Wind dir N N NW NW NW N N NW SE S S SW SW SW SW W NE NE NW N NE Wind spd 6 4 3 3 3 3 2 2 1 3 3 4 4 5 6 6 4 5 5 6 5 Clouds B1 FW FW FW FW FW SC SC FW FW SC B1 FW FW SC SC B1 B2 OV OV B2 PoP 12hr 0 0 10 50 80 QPF 12hr 0 0 0 0.14 1.17 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C D D D D C Tstms S C C S C C C Obvis PF Heat index 87 Max heat 84 85 89 Date 08/19 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 77 62 76 61 81 64 80 63 78 Temp 74 75 66 62 74 74 64 62 78 78 69 65 78 76 67 64 76 76 Dewpt 70 69 66 62 66 68 64 62 69 71 68 64 69 70 66 63 68 70 PWind dir NE NE E E S S NW E SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 B2 B1 B1 B1 SC FW FW SC FW FW SC SC FW FW SC SC SC PoP 12hr 50 20 5 5 5 20 5 20 20 Rain shwrs C S S S S S S Tstms C S S S S $$ IAZ017-170900- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 557 PM CDT Sun Aug 16 2026 Date 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed 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 80 63 78 57 Temp 74 66 62 59 57 70 77 78 77 69 67 65 64 72 77 74 71 66 63 60 58 Dewpt 64 62 60 58 57 63 63 64 67 66 65 65 64 69 69 68 67 65 62 60 58 RH 71 87 93 96100 78 62 62 71 90 93100100 90 76 82 87 97 97100100 Wind dir NW NW NW NW NW W W W SW SW SW SW W W NW W W NW N N NE Wind spd 8 4 3 3 2 3 5 4 3 5 6 6 4 4 4 4 4 3 2 2 2 Clouds SC FW FW SC FW FW CL CL FW SC SC B1 B2 B1 B1 B1 B1 B1 B1 B1 SC PoP 12hr 0 0 40 80 40 QPF 12hr 0 0 0.13 0.37 0.07 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C D D C C Tstms S S S C C S Date 08/19 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 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 75 55 76 58 78 59 78 58 76 Temp 72 72 60 57 74 73 62 59 76 75 64 60 75 74 63 59 74 74 Dewpt 62 62 58 57 62 64 61 59 68 69 64 60 66 66 61 59 66 67 PWind dir NE SE S S SW SW NW N SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC SC FW SC SC SC FW SC SC SC SC SC FW SC SC SC SC PoP 12hr 5 0 5 10 30 30 5 10 10 Rain shwrs S S C C S Tstms S S S $$ IAZ049-170900- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 557 PM CDT Sun Aug 16 2026 Date 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 58 81 64 81 61 Temp 75 68 64 61 59 70 76 79 78 69 68 66 66 72 77 79 75 68 66 64 62 Dewpt 67 64 62 60 59 64 64 65 68 65 64 64 65 69 71 71 69 67 66 64 62 RH 76 87 93 97100 81 66 62 71 87 87 93 97 90 82 77 82 97100100100 Wind dir N NW NW NW NW NW NW W W S S SW SW W W W W W N N NE Wind spd 6 4 4 3 2 2 3 4 2 3 5 5 5 5 4 5 5 3 2 3 3 Clouds B1 FW FW FW SC FW FW FW FW SC SC SC B1 B1 B1 B2 B2 B2 B2 B2 B1 PoP 12hr 0 0 30 80 70 QPF 12hr 0 0 0.02 0.36 0.82 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C D D L L C C Tstms S C C C S S C Date 08/19 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 77 57 78 58 80 61 80 60 77 Temp 74 72 62 58 74 74 63 59 76 75 66 62 77 75 64 61 75 74 Dewpt 65 65 60 58 62 65 61 59 68 69 65 62 67 67 63 60 67 68 PWind dir NE E E S SW SW NW N SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 SC SC SC B1 SC FW FW SC SC FW SC SC SC FW SC SC SC PoP 12hr 10 5 5 5 20 30 5 10 10 Rain shwrs S S C S Tstms S S S $$ IAZ086-170900- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 557 PM CDT Sun Aug 16 2026 Date 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed 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 82 65 83 66 Temp 76 71 68 64 63 72 78 80 80 71 68 67 67 75 80 82 80 72 70 68 67 Dewpt 71 69 67 64 63 67 67 67 69 67 66 65 66 70 73 74 74 71 70 68 67 RH 85 93 97100100 84 69 65 69 87 93 93 97 84 79 77 82 97100100100 Wind dir NW N NW NW NW NW NW NW NW S S S SW SW W W NW NW N N NE Wind spd 6 5 4 5 4 4 4 4 0 2 4 5 4 6 6 5 3 5 4 5 4 Clouds B1 SC FW FW FW FW SC SC FW FW SC SC SC SC SC SC B1 OV B2 B2 B2 PoP 12hr 0 0 10 50 80 QPF 12hr 0 0 0 0.20 1.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C D D L L C Tstms S C C S S S S Heat index 88 85 Max heat 84 86 90 Date 08/19 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 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 60 81 64 79 63 78 Temp 75 76 66 62 74 74 64 62 78 79 68 65 77 76 66 63 75 76 Dewpt 70 69 65 62 66 68 64 61 69 72 68 65 70 71 66 63 69 71 PWind dir NE NE E E S SW NW N E Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 B1 B1 SC SC SC SC FW FW FW FW SC SC FW FW FW SC SC PoP 12hr 30 10 20 5 10 20 10 10 10 Rain shwrs C S S S S Tstms S S S S $$