Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
431 FOUS53 KDMX 190815 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 314 AM CDT Tue Aug 19 2025 IAZ060-192100- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 314 AM CDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 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 87 69 86 66 84 Temp 71 70 77 84 87 85 77 73 70 70 77 83 85 82 75 70 68 67 74 80 84 81 Dewpt 70 69 72 72 72 71 71 71 69 69 70 70 69 68 68 67 67 66 67 66 65 65 RH 97 97 85 67 61 63 82 93 97 97 79 65 59 63 79 90 97 97 79 62 53 58 Wind dir N N N N N N NE NE N N NE NE NE NE E E E E SE E E E Wind spd 3 3 4 6 8 6 4 2 2 3 5 6 6 6 4 3 3 3 4 5 5 5 Clouds SC B1 B1 SC SC FW FW FW SC SC SC FW FW FW FW FW SC SC FW FW FW CL PoP 12hr 0 0 5 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 90 93 90 Max heat 90 95 89 88 91 84 83 87 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 88 61 79 56 75 52 74 Temp 68 64 84 83 69 62 77 75 62 56 72 71 58 53 70 69 Dewpt 64 62 67 68 66 60 57 56 56 53 52 52 53 50 50 51 PWind dir SE SW N NW NW NW N N Wind char LT LT LT LT LT LT LT LT Avg clouds CL FW FW SC SC SC FW FW FW FW FW FW FW FW FW SC PoP 12hr 0 10 30 5 0 0 5 5 Rain shwrs C C Tstms C C $$ IAZ039-192100- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 314 AM CDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 65 83 62 80 Temp 68 67 73 80 83 80 72 69 67 66 74 79 81 78 70 67 64 64 71 77 79 76 Dewpt 68 66 69 71 71 72 71 69 67 66 70 69 69 68 67 66 64 63 66 66 65 66 RH 100 97 87 74 67 77 97100100100 87 72 67 71 90 97100 97 84 69 62 71 Wind dir N N N N N N N NW NW N NE NE NE NE E E E E SE E SE SE Wind spd 3 3 5 8 8 5 3 2 2 3 5 6 8 5 4 3 2 2 4 5 4 4 Clouds B1 B1 B1 SC FW SC FW B1 SC SC B1 FW FW FW FW FW FW SC SC FW FW CL PoP 12hr 0 20 5 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Obvis PF PF PF Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 61 82 58 75 52 70 49 70 Temp 64 62 79 77 65 59 73 70 58 54 68 66 54 51 68 66 Dewpt 62 61 68 68 63 57 58 57 54 51 53 52 51 49 52 53 PWind dir SE SW NW NW NW NW NW NW Wind char LT LT LT GN LT GN LT LT Avg clouds FW FW SC SC SC FW FW FW CL CL FW FW CL FW FW FW PoP 12hr 0 10 20 0 0 0 0 0 Rain shwrs S S Tstms S $$ IAZ048-192100- Ames-Story IA 41.99N 93.62W Elev. 936 ft 314 AM CDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 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 86 67 85 64 82 Temp 69 68 75 83 86 83 75 71 69 67 76 82 83 79 71 67 66 65 73 79 81 78 Dewpt 68 68 71 72 73 73 72 71 69 67 72 71 70 70 69 67 66 65 68 67 67 67 RH 97100 87 70 65 72 90100100100 87 69 65 74 93100100100 84 67 63 69 Wind dir N N N N N N N N N N NE NE NE NE E E E E SE SE E E Wind spd 2 3 3 6 6 5 2 2 2 2 4 5 5 5 4 3 2 2 3 4 5 5 Clouds SC B1 B1 SC SC FW SC SC SC SC SC FW FW FW FW FW SC SC SC FW FW CL PoP 12hr 0 5 5 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Obvis PF Heat index 88 93 89 88 Max heat 89 94 86 87 89 85 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 86 58 77 53 73 50 72 Temp 66 62 82 78 66 59 75 72 58 54 69 68 54 51 68 67 Dewpt 64 62 68 69 64 58 58 58 54 52 53 53 51 49 51 53 PWind dir SE SW N NW NW NW N N Wind char LT LT LT LT LT LT LT LT Avg clouds FW SC SC SC SC FW FW CL CL FW FW FW FW FW FW SC PoP 12hr 0 10 30 5 0 0 5 5 Rain shwrs C C Tstms C S $$ IAZ004-192100- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 314 AM CDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 85 65 82 63 82 Temp 67 67 74 81 84 82 72 68 66 65 73 79 80 78 69 65 64 64 73 79 81 78 Dewpt 67 67 70 72 72 73 70 68 66 65 70 69 69 69 67 65 63 63 68 68 68 69 RH 100100 87 74 67 74 93100100100 90 72 69 74 93100 97 97 84 69 65 74 Wind dir NW NW N N N NE N N N N NE NE NE E E SE SE S S S S S Wind spd 2 2 4 4 5 5 3 2 2 2 4 5 5 5 4 4 4 4 5 8 8 8 Clouds B1 B2 SC FW FW FW FW FW SC B1 SC FW FW FW FW FW FW SC FW FW FW FW PoP 12hr 5 5 5 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Obvis F+ F+ PF Heat index 90 88 Max heat 87 92 83 84 Dense Fog Y Y Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 64 81 55 74 51 70 48 70 Temp 66 65 77 74 61 56 71 69 56 52 66 66 52 49 67 67 Dewpt 64 62 67 63 56 52 53 55 51 48 49 51 48 46 49 51 PWind dir S NW NW NW NW NW NW N Wind char LT GN LT GN LT GN LT LT Avg clouds FW B1 SC SC FW FW FW FW FW FW FW FW FW FW FW FW PoP 12hr 20 30 10 0 0 0 0 0 Rain shwrs S C C Tstms S S C $$ IAZ035-192100- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 314 AM CDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 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 86 66 85 63 83 Temp 69 68 74 83 86 83 74 69 68 66 74 81 82 79 71 67 65 64 73 79 81 78 Dewpt 68 68 71 73 73 73 72 69 68 66 71 70 70 70 69 67 65 64 68 68 68 68 RH 97100 90 72 65 72 93100100100 90 69 67 74 93100100100 84 69 65 71 Wind dir NE N N N N N N NE N N NE NE NE NE E E SE SE S S SE SE Wind spd 2 2 3 5 5 4 2 2 2 2 3 5 5 5 4 3 2 2 4 4 5 5 Clouds B1 B1 B1 SC FW FW FW SC B1 B1 SC FW FW FW FW FW SC SC FW FW FW FW PoP 12hr 5 10 5 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Obvis PF F Heat index 89 92 89 Max heat 90 93 84 86 88 83 84 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 84 56 77 51 72 48 71 Temp 66 63 80 77 62 57 73 72 57 52 69 67 53 49 68 67 Dewpt 64 62 69 68 60 55 58 58 53 50 53 54 50 47 52 53 PWind dir SE W NW NW NW NW N N Wind char LT LT LT GN LT GN LT LT Avg clouds FW SC SC SC SC FW FW CL FW FW FW FW FW FW FW SC PoP 12hr 5 20 20 0 0 0 0 5 Rain shwrs S S S Tstms S S $$ IAZ094-192100- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 314 AM CDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 68 85 65 84 Temp 73 72 79 85 88 84 76 73 70 68 77 82 85 82 74 70 67 66 74 80 83 80 Dewpt 72 71 73 72 71 71 72 71 69 68 71 69 68 68 69 68 67 66 67 65 64 65 RH 97 97 82 65 57 65 87 93 97100 82 65 57 63 84 93100100 79 60 53 60 Wind dir N N NE N N NE NE NE N N NE NE NE NE NE E E E E E E E Wind spd 3 3 5 5 6 5 4 3 3 3 4 5 5 5 4 3 3 2 3 4 4 4 Clouds SC SC SC B1 SC FW SC FW FW SC FW SC FW FW FW FW FW SC FW FW FW FW PoP 12hr 5 0 5 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 91 94 89 Max heat 92 95 87 87 89 83 83 86 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 88 63 81 56 76 53 73 Temp 68 63 83 82 70 64 78 76 63 57 72 71 58 54 69 69 Dewpt 64 62 65 68 67 62 58 57 56 54 53 53 54 51 51 52 PWind dir SE SW N N N N N N Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW SC SC SC SC FW FW FW SC SC FW SC SC SC PoP 12hr 0 5 30 10 5 5 5 10 Rain shwrs S C Tstms S C $$ IAZ017-192100- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 314 AM CDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 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 83 64 82 61 79 Temp 66 65 71 80 83 80 72 67 66 64 73 79 80 77 69 65 64 63 71 76 78 76 Dewpt 66 65 69 72 72 72 70 67 66 64 70 69 68 68 67 64 63 63 67 67 67 66 RH 100100 93 77 70 77 93100100100 90 72 67 74 93 97 97100 87 74 69 71 Wind dir N N N N N N N N N N N NE NE NE E E SE SE S S S SE Wind spd 2 1 3 5 5 4 2 2 2 2 3 5 5 4 2 2 2 2 3 4 5 4 Clouds B1 B2 B1 SC SC FW FW SC B1 B1 SC FW FW FW FW FW SC SC SC SC FW FW PoP 12hr 5 20 5 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Obvis F+ F+ PF PF+ Heat index 88 Max heat 84 89 83 Dense Fog Y Y Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 80 55 72 50 68 47 68 Temp 63 63 77 74 61 56 70 67 55 52 65 63 51 49 66 64 Dewpt 62 61 69 66 57 53 56 55 51 48 52 51 48 46 52 53 PWind dir S W NW NW NW NW NW NW Wind char LT LT LT GN LT GN LT LT Avg clouds FW B1 SC SC FW FW FW FW CL CL FW FW FW FW FW SC PoP 12hr 5 30 10 0 0 0 0 0 Rain shwrs C Tstms C $$ IAZ049-192100- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 314 AM CDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 66 82 63 80 Temp 68 67 73 80 82 81 72 70 67 67 75 80 81 78 70 67 64 64 71 77 79 76 Dewpt 67 67 70 71 71 71 70 69 67 66 71 70 69 68 67 66 64 63 66 66 66 65 RH 97100 90 74 69 72 93 97100 97 87 72 67 71 90 97100 97 84 69 64 69 Wind dir N N N N N N N N N N N NE NE NE E E E E SE E E SE Wind spd 4 4 4 6 6 5 3 2 2 3 4 5 5 5 4 3 3 2 3 4 4 3 Clouds SC B1 B1 SC SC FW SC SC B1 SC SC FW FW FW FW FW SC SC SC FW FW FW PoP 12hr 0 10 5 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Obvis PF PF Heat index 87 Max heat 85 90 85 86 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 61 83 58 75 52 70 49 70 Temp 64 62 79 77 65 58 73 70 58 53 68 66 54 50 67 66 Dewpt 62 60 68 68 63 57 58 58 54 50 53 53 50 48 52 53 PWind dir SE SW NW NW NW NW NW NW Wind char LT LT LT GN LT GN LT LT Avg clouds FW FW SC SC SC FW FW CL FW FW FW FW FW FW FW FW PoP 12hr 0 10 30 5 0 0 0 0 Rain shwrs C C Tstms C S $$ IAZ086-192100- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 314 AM CDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 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 85 67 84 63 81 Temp 72 70 76 82 84 83 74 72 69 68 76 81 82 80 72 70 66 65 72 78 80 78 Dewpt 71 70 72 72 72 73 71 71 69 67 71 70 69 69 69 68 66 64 66 65 65 66 RH 97100 87 72 67 72 90 97100 97 85 69 65 69 90 93100 97 81 64 60 67 Wind dir N N N N N N N N N N NE NE NE NE NE E E E E E E E Wind spd 4 5 5 6 8 6 4 3 3 3 5 6 6 5 5 4 4 4 4 5 5 4 Clouds SC B1 SC B1 SC FW FW FW SC SC SC SC FW FW FW FW SC SC FW FW CL FW PoP 12hr 5 0 5 5 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Obvis PF Heat index 91 88 Max heat 88 93 84 86 88 83 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 85 63 79 56 74 52 72 Temp 66 62 81 81 69 64 76 74 61 57 71 70 57 54 69 69 Dewpt 64 62 66 68 66 62 59 59 57 54 53 54 53 51 52 53 PWind dir SE S N NW NW NW NW N Wind char LT LT LT LT LT LT LT LT Avg clouds CL FW FW FW SC SC FW FW CL FW FW FW FW FW FW SC PoP 12hr 0 5 30 10 5 5 5 5 Rain shwrs C C Tstms C C $$