Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
307 FOUS53 KDMX 171931 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 231 PM CDT Sun Aug 17 2025 IAZ060-180900- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 231 PM CDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 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 74 91 72 88 66 Temp 94 89 81 79 76 75 81 87 90 89 82 77 74 73 78 84 87 84 76 72 68 66 Dewpt 72 74 73 73 71 71 73 74 74 75 74 74 72 71 72 73 73 72 71 69 66 64 RH 49 61 77 82 85 87 77 65 60 64 77 90 93 93 82 70 63 67 85 90 93 93 Wind dir S S SE S S S S SW W NW S W W NW N N N N N N N N Wind spd 9 5 5 5 5 5 8 10 9 5 5 4 4 4 5 5 6 6 5 5 5 5 Clouds SC FW FW SC SC B2 B1 B1 B1 SC SC SC B1 B1 SC SC SC SC FW FW FW FW PoP 12hr 20 20 20 20 5 QPF 12hr 0.04 0 0.16 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S S S S S S S Tstms S S S S S S S S S S S Heat index 102 97 86 86 96100 99 88 90 94 89 Max heat 110 92 97 102 97 91 95 87 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 82 63 82 62 85 62 79 55 75 Temp 78 79 68 64 78 79 66 63 81 81 69 64 76 75 62 57 72 71 Dewpt 65 65 65 63 64 64 64 61 65 66 64 60 58 57 56 52 53 53 PWind dir NE NE E SE SW N NW N N Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW SC SC FW CL FW FW FW SC SC SC FW FW FW FW FW PoP 12hr 5 0 0 0 5 20 10 10 5 Rain shwrs S Tstms S $$ IAZ039-180900- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 231 PM CDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 72 87 69 83 61 Temp 88 81 76 76 74 72 77 83 86 83 77 74 72 70 76 80 82 79 71 67 64 63 Dewpt 75 75 73 74 72 71 73 75 76 75 75 73 71 70 72 71 70 70 68 65 63 62 RH 66 82 90 94 93 97 87 77 72 77 94 97 97100 87 74 67 74 90 93 97 97 Wind dir SE SE E SE SE SE SE S SW NW S W NW NW N N N N N N N N Wind spd 9 9 8 10 10 9 10 11 10 6 5 4 4 4 6 8 9 9 5 5 5 5 Wind gust 18 Clouds FW SC SC B1 B2 B2 B2 B1 B1 B1 SC B1 B1 B1 B1 SC FW FW FW FW FW FW PoP 12hr 40 40 30 10 0 QPF 12hr 0.13 0.08 0.10 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C C S S C C S S Tstms S S S C C C S S C C S S Heat index 99 87 91 96 91 Max heat 102 93 96 89 85 87 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 79 59 79 60 82 60 76 53 71 Temp 76 75 64 60 76 76 64 61 79 77 66 61 74 71 59 55 69 67 Dewpt 64 65 63 60 64 65 62 60 66 67 63 59 58 57 54 52 53 53 PWind dir NE NE E SE SW NW NW NW NW Wind char LT LT LT LT LT LT GN LT GN Avg clouds SC FW FW FW FW FW CL FW SC SC SC FW FW FW FW FW FW FW PoP 12hr 0 0 0 0 5 20 5 5 5 Rain shwrs S $$ IAZ048-180900- Ames-Story IA 41.99N 93.62W Elev. 936 ft 231 PM CDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 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 73 89 70 85 63 Temp 92 86 80 77 75 73 78 85 88 86 78 75 72 71 77 82 84 81 73 69 65 64 Dewpt 75 75 74 74 72 71 74 76 77 77 75 74 72 71 73 73 73 72 71 68 65 64 RH 58 70 82 90 90 93 88 75 70 75 91 97100100 87 74 70 74 93 97100100 Wind dir S S SE SE S S S SW W NW S W NW N N N N N N N NE N Wind spd 8 6 6 5 5 5 8 10 8 5 3 3 3 3 5 6 6 6 5 4 4 4 Clouds FW FW FW SC B1 B2 B1 B1 SC SC SC SC B1 SC SC SC FW FW FW FW FW FW PoP 12hr 30 30 20 10 5 QPF 12hr 0.02 0.03 0.08 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C S S S S S S Tstms S C S S S S S S Heat index 103 95 94 99 96 87 91 Max heat 110 90 96 102 95 88 93 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 81 61 81 60 83 60 77 53 73 Temp 76 76 65 62 77 77 64 61 80 79 67 61 75 73 59 54 70 69 Dewpt 66 66 65 62 65 66 64 61 67 68 64 59 59 59 56 52 54 55 PWind dir NE E E SE SW NW NW NW N Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW CL FW SC FW SC SC FW FW FW FW FW FW PoP 12hr 0 0 0 0 5 20 5 10 5 Rain shwrs S S Tstms S S $$ IAZ004-180900- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 231 PM CDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 71 87 66 82 60 Temp 87 83 77 75 74 72 77 82 85 84 74 71 68 67 72 78 81 79 70 65 63 62 Dewpt 75 75 73 71 70 69 72 73 74 75 71 69 67 66 68 68 70 69 67 65 62 61 RH 68 77 87 87 87 90 85 74 70 74 90 93 97 97 87 71 69 72 90100 97 97 Wind dir S S SE S S S SW SW W N N N N N N N N N NE NE NE NE Wind spd 12 6 9 9 10 9 11 11 10 5 5 5 5 5 6 9 9 8 5 4 3 3 Clouds SC SC B2 B2 B2 B2 B2 B1 SC SC SC SC SC B1 SC FW FW FW FW FW FW FW PoP 12hr 50 20 10 5 0 QPF 12hr 0.40 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C S Tstms S S C C S Heat index 96 90 87 93 92 Max heat 96 85 88 93 87 86 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 81 59 81 61 81 57 74 51 72 Temp 76 76 63 60 77 77 65 62 77 76 62 58 71 70 56 52 68 68 Dewpt 64 66 62 59 64 66 61 60 65 64 58 54 55 55 51 48 50 52 PWind dir NE SE S S W NW NW NW N Wind char LT LT LT LT GN LT GN LT GN Avg clouds FW CL CL FW FW CL FW SC SC SC FW FW FW FW FW FW FW FW PoP 12hr 0 0 0 10 10 20 5 5 5 Rain shwrs S S $$ IAZ035-180900- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 231 PM CDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 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 72 88 69 84 62 Temp 89 85 79 77 74 73 78 84 86 86 77 73 71 69 74 80 82 80 71 67 64 63 Dewpt 76 76 74 73 71 71 73 76 77 77 75 73 71 69 70 71 71 71 69 66 64 62 RH 66 75 85 87 90 93 85 77 75 75 94100100100 87 74 69 74 93 97100 97 Wind dir S S SE S S S S SW W NW SE NW N N N N N N N NE NE NE Wind spd 9 6 9 8 8 8 10 10 9 5 4 4 4 4 5 6 8 6 5 4 3 3 Clouds FW FW SC B1 B2 B2 B1 B1 B1 FW SC SC B1 B1 SC SC FW FW FW FW FW FW PoP 12hr 40 30 20 5 5 QPF 12hr 0.19 0.03 0.02 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C S S S S S Tstms S C C S S S S S Heat index 100 95 93 97 97 87 Max heat 105 91 93 98 93 85 88 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 82 59 81 60 83 57 77 51 72 Temp 76 76 63 60 77 77 63 61 79 77 64 59 73 71 57 52 70 69 Dewpt 66 67 63 60 65 66 62 60 67 68 61 56 58 59 53 50 53 55 PWind dir NE E SE S W N NW N N Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW CL FW SC SC SC SC SC FW FW FW FW FW FW PoP 12hr 0 0 0 5 5 20 5 5 5 Rain shwrs S S Tstms S $$ IAZ094-180900- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 231 PM CDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 73 92 71 88 66 Temp 92 88 81 78 75 73 82 88 90 86 79 77 74 72 79 85 87 83 76 72 69 67 Dewpt 72 74 73 72 71 71 72 73 74 75 75 73 71 71 74 74 74 73 73 71 69 67 RH 52 63 77 82 87 93 72 61 60 70 88 87 90 97 85 70 65 72 90 97100100 Wind dir S S S S S S S SW SW SW S SW NW NW N N N N N NE NE NE Wind spd 10 5 5 5 5 5 8 10 9 4 4 4 3 3 4 4 5 5 5 5 5 5 Clouds FW FW FW FW FW B1 B1 B1 SC SC SC SC B1 B1 SC SC SC SC FW FW SC FW PoP 12hr 5 20 30 30 20 QPF 12hr 0 0.01 0.15 0.02 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C C C S S Tstms S C C C C C C S S Heat index 100 97 86 87 96 99 95 93 95 89 Max heat 101 93 98 101 93 94 96 87 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 83 62 82 61 85 63 81 56 76 Temp 78 78 67 63 78 79 65 62 80 81 69 64 78 76 62 57 72 71 Dewpt 66 66 66 63 64 64 64 62 64 65 65 62 60 58 57 54 52 52 PWind dir NE NE NE E SW N N N N Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW CL FW FW FW CL FW FW FW SC SC SC FW FW SC SC FW PoP 12hr 5 0 0 0 0 10 10 10 10 $$ IAZ017-180900- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 231 PM CDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 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 71 85 67 80 59 Temp 84 82 75 74 73 72 76 82 83 83 75 71 69 68 73 77 79 77 68 65 62 61 Dewpt 76 76 73 72 71 71 73 75 76 76 74 70 69 68 69 70 70 68 66 63 61 59 RH 77 82 94 93 93 97 90 79 80 80 97 97100100 87 79 74 74 93 93 97 93 Wind dir SE SE SE SE SE S S SW SW W SW NW N N N N N N N N NE NE Wind spd 10 8 9 11 10 9 10 11 10 5 4 4 4 4 5 6 8 6 4 3 3 3 Clouds SC FW B1 B1 B2 OV B2 B1 B1 SC SC SC SC B1 SC SC FW FW FW FW FW FW PoP 12hr 50 50 20 5 0 QPF 12hr 0.45 0.09 0.04 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C C S S S S Tstms S S S C C S S S S S Heat index 93 89 88 91 90 Max heat 94 89 93 87 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 58 79 59 79 56 73 50 70 Temp 74 75 62 60 75 76 62 61 77 75 63 58 71 68 56 52 67 66 Dewpt 64 65 61 59 64 65 61 59 67 66 59 55 57 56 51 49 52 52 PWind dir NE E SE S W NW NW NW NW Wind char LT LT LT LT LT LT GN LT LT Avg clouds FW FW FW FW FW FW FW SC SC SC SC FW FW FW FW FW FW FW PoP 12hr 0 0 0 5 10 20 5 5 5 Rain shwrs S $$ IAZ049-180900- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 231 PM CDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 72 88 69 84 62 Temp 91 84 78 76 74 72 78 84 86 84 77 74 71 69 76 81 83 79 71 67 64 63 Dewpt 74 75 73 73 71 71 73 75 76 75 74 72 70 69 72 72 72 71 68 66 63 62 RH 58 74 85 90 90 97 85 74 72 74 90 93 97100 87 74 70 77 90 97 97 97 Wind dir S SE SE SE SE SE S S SW W S SW NW N N N N N N N N N Wind spd 9 6 6 6 6 6 9 11 9 5 4 4 4 4 5 6 6 6 5 5 5 5 Clouds FW FW FW SC B1 B2 B2 B1 SC SC SC SC SC SC SC SC FW FW FW FW FW FW PoP 12hr 30 30 30 10 5 QPF 12hr 0.09 0.04 0.10 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C S S C C S S Tstms S C S S S C S S Heat index 101 92 92 97 92 88 Max heat 105 86 93 99 87 87 90 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 79 59 78 59 82 59 77 52 72 Temp 75 74 63 60 75 75 62 60 78 77 65 60 74 72 58 53 69 67 Dewpt 65 65 63 60 64 65 61 59 66 67 62 58 58 58 54 50 53 53 PWind dir NE NE E SE SW NW NW NW NW Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW CL FW FW FW CL FW SC FW SC SC FW FW FW FW FW FW PoP 12hr 0 0 0 0 5 20 5 5 5 Rain shwrs S Tstms S $$ IAZ086-180900- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 231 PM CDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 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 72 91 72 86 65 Temp 93 88 80 77 75 73 81 88 89 86 79 77 74 73 79 84 85 82 75 71 68 66 Dewpt 73 75 75 74 72 71 74 75 75 76 75 74 73 72 74 74 75 73 72 70 67 66 RH 52 66 85 90 90 93 79 66 64 72 88 90 97 97 85 72 72 74 90 97 97100 Wind dir S S SE SE S SE S S SW SW S SW NW NW NW N N N N N N N Wind spd 6 5 6 5 5 5 8 9 9 4 4 4 4 4 5 5 5 5 5 5 5 5 Clouds FW FW FW FW SC B1 B1 SC SC SC SC SC B1 B1 B1 B1 SC SC FW FW SC FW PoP 12hr 10 20 40 30 10 QPF 12hr 0.01 0 0.12 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C C C S S Tstms S S S C C S S S S Heat index 102 98 85 86 97 99 95 91 94 87 Max heat 105 92 99 101 94 92 95 84 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 62 79 61 82 63 79 55 73 Temp 77 76 66 63 75 77 65 62 79 79 69 64 76 74 61 57 70 69 Dewpt 66 66 66 63 65 66 64 62 65 68 66 62 62 61 58 54 54 56 PWind dir NE NE NE E SW N NW NW N Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW FW SC SC FW CL FW FW FW FW SC SC FW FW FW FW FW PoP 12hr 5 0 0 0 0 10 10 10 5 Rain shwrs S Tstms S $$