Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
843 FOUS53 KDMX 181144 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 643 AM CDT Sat Jul 18 2026 IAZ060-182100- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 643 AM CDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 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 95 68 91 71 97 Temp 76 85 90 94 90 80 74 70 70 81 88 91 89 79 75 73 73 88 95 97 94 Dewpt 70 72 71 71 72 70 67 67 66 68 68 67 65 66 66 67 68 72 71 70 70 RH 82 65 54 47 56 72 79 90 87 65 52 45 45 64 74 81 84 59 46 42 46 Wind dir SW NW NW N NE NE NE NE NE E E E E SE SE S S SW SW SW SW Wind spd 5 5 5 6 9 5 3 3 3 4 5 5 6 5 5 5 5 9 11 12 10 Clouds FW FW SC B1 SC SC FW SC CL FW SC FW FW FW FW FW FW FW FW FW FW PoP 12hr 20 20 0 0 5 QPF 12hr 0.01 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S Tstms S S S Heat index 91 97101 96 95104105100 Max heat 98 103 94 92 96 92 106 108 Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 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 74 87 64 84 63 84 66 86 Temp 80 74 85 85 70 65 81 82 68 65 81 82 71 67 83 84 Dewpt 68 65 62 58 58 57 55 54 58 58 59 59 61 61 64 63 PWind dir W N N N SE S SE E Wind char GN GN LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW FW SC B1 SC SC SC SC SC SC PoP 12hr 20 0 0 5 20 20 30 20 Rain shwrs S S S S S C S Tstms S $$ IAZ039-182100- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 643 AM CDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 65 87 68 92 Temp 77 80 84 87 85 74 70 67 67 78 83 85 85 75 71 69 70 82 89 92 89 Dewpt 71 73 69 67 68 66 64 62 63 67 66 66 66 66 65 65 67 73 76 75 74 RH 82 79 61 52 57 76 81 84 87 69 57 53 53 74 81 87 90 74 66 58 61 Wind dir W N N N N NE NE NE E SE SE SE SE SE S S S S SW SW SW Wind spd 9 9 9 10 8 4 3 3 4 4 3 4 4 5 6 8 8 10 11 12 11 Clouds SC SC SC FW FW FW FW CL SC SC FW SC FW FW SC SC B1 SC SC FW SC PoP 12hr 20 0 0 10 40 QPF 12hr 0 0 0 0 0.10 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C C Tstms S S S C C Heat index 87101103 98 Max heat 88 91 87 86 89 87 102 105 Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 82 60 79 59 81 62 82 Temp 75 70 79 79 66 61 76 77 64 62 78 78 67 64 79 80 Dewpt 68 64 64 61 58 55 57 56 57 57 61 60 60 61 64 63 PWind dir W NW N N SW SW S SE Wind char GN BZ GN LT LT LT LT LT Avg clouds SC FW FW FW FW FW FW FW SC SC SC SC SC SC SC SC PoP 12hr 50 0 0 0 5 10 20 20 Rain shwrs C S S Tstms C $$ IAZ048-182100- Ames-Story IA 41.99N 93.62W Elev. 936 ft 643 AM CDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 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 92 66 90 70 97 Temp 74 81 86 91 87 76 71 68 68 80 86 88 88 77 73 71 72 86 94 96 92 Dewpt 71 73 74 73 71 68 66 65 64 68 68 68 67 67 66 66 68 74 74 73 73 RH 90 77 68 56 59 76 84 90 87 67 55 52 50 71 79 84 87 68 53 48 54 Wind dir SW NW N N NE NE NE NE NE E E SE SE SE SE S S SW SW SW SW Wind spd 4 5 4 8 8 4 2 2 3 4 4 4 4 4 5 5 5 9 10 11 8 Clouds SC SC SC SC SC SC FW FW FW FW FW FW FW FW SC SC FW FW FW FW SC PoP 12hr 10 5 0 5 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Tstms S Heat index 86 94100 93 94105107101 Max heat 95 101 91 89 95 90 107 109 Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 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 72 85 62 82 61 83 64 84 Temp 78 72 82 82 68 63 79 80 66 63 79 80 69 66 81 83 Dewpt 68 64 63 60 58 57 57 57 59 59 61 61 62 62 65 64 PWind dir NW N N N SE S SE SE Wind char LT GN LT LT LT LT LT LT Avg clouds SC FW FW FW FW FW FW SC SC B1 SC SC SC B1 SC SC PoP 12hr 20 0 0 0 20 20 30 20 Rain shwrs S S S S S C S Tstms S $$ IAZ004-182100- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 643 AM CDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 85 62 87 70 94 Temp 73 76 81 85 83 72 67 64 64 77 83 86 85 77 74 72 71 83 90 93 89 Dewpt 70 67 65 64 65 64 63 62 62 66 64 66 68 66 65 64 66 72 71 70 70 RH 90 74 58 50 55 76 87 93 93 69 53 51 57 69 74 76 84 70 54 47 54 Wind dir N NE NE NE NE NE N NE S S S S S SE S S SW SW SW W N Wind spd 8 9 9 9 8 4 3 2 2 5 8 9 9 12 13 14 14 12 11 11 10 Clouds B1 SC FW SC SC FW FW FW SC FW FW SC SC FW SC SC SC FW SC SC FW PoP 12hr 5 0 0 10 30 QPF 12hr 0 0 0 0.02 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C S Tstms C S C C S Heat index 88 97 99 94 Max heat 84 87 84 85 90 88 99 100 Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 66 80 58 79 59 81 62 82 Temp 73 66 77 78 63 59 76 77 64 61 77 79 67 64 79 81 Dewpt 63 60 60 57 55 55 56 57 57 57 61 62 60 60 64 63 PWind dir NW N N NW S SW S SE Wind char GN BZ GN LT LT GN LT LT Avg clouds FW FW FW FW FW FW FW SC SC SC SC SC SC SC B1 SC PoP 12hr 20 0 0 0 20 20 20 10 Rain shwrs S S S S Tstms S S $$ IAZ035-182100- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 643 AM CDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 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 89 64 89 70 96 Temp 74 80 82 88 86 74 69 66 66 79 85 88 87 77 74 72 71 85 94 96 91 Dewpt 71 72 71 68 70 66 65 63 62 68 67 68 68 66 65 65 67 74 73 72 72 RH 90 77 69 52 59 76 87 90 87 69 55 52 53 69 74 79 87 70 51 46 54 Wind dir W NE NE NE NE NE NE NE E SE SE SE SE SE SE S S SW SW SW W Wind spd 3 8 6 6 6 3 1 1 2 4 4 4 5 6 6 8 6 10 9 9 6 Clouds SC SC SC SC FW FW FW FW SC FW SC FW SC FW SC SC SC FW FW FW SC PoP 12hr 10 0 0 5 20 QPF 12hr 0 0 0 0 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S Tstms S S S Heat index 87 91 93103105 99 Max heat 88 93 88 89 94 89 103 106 Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 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 69 83 59 81 60 82 63 84 Temp 76 69 80 80 65 60 77 79 64 62 78 80 67 64 80 82 Dewpt 65 62 62 60 56 56 57 57 58 58 61 62 61 61 64 64 PWind dir NW N N N S S S E Wind char LT BZ LT LT LT LT LT LT Avg clouds SC FW FW FW SC FW FW SC SC SC SC SC SC SC B1 SC PoP 12hr 20 0 0 0 20 20 30 10 Rain shwrs S S S S C Tstms S $$ IAZ094-182100- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 643 AM CDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 92 71 91 71 95 Temp 75 83 89 92 89 80 75 72 72 82 89 91 89 79 75 72 72 86 93 95 93 Dewpt 71 73 72 71 73 71 71 70 68 70 70 70 65 67 68 69 70 72 70 68 69 RH 87 72 57 51 59 74 87 93 87 67 54 50 45 67 79 90 93 63 47 42 46 Wind dir SW W W SW W NE NE NE NE E E E SE SE S S S SW SW SW SW Wind spd 6 6 5 5 4 3 4 3 4 4 3 3 3 3 4 4 5 8 10 11 9 Clouds FW CL FW SC B1 B2 B1 SC FW FW FW CL FW FW FW FW FW FW FW CL FW PoP 12hr 20 30 0 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S Tstms S S Heat index 89 96 99 97 94 96 92 99100 98 Max heat 97 100 94 94 98 91 101 103 Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 75 88 65 84 64 81 65 86 Temp 80 75 86 85 70 66 82 82 68 65 79 79 69 66 82 83 Dewpt 69 66 60 58 59 57 54 54 57 58 59 60 61 62 63 63 PWind dir W N N N E S SE SE Wind char GN GN GN LT LT LT LT LT Avg clouds FW FW FW FW FW FW FW SC SC SC B1 B1 SC B1 B1 SC PoP 12hr 20 0 0 0 20 30 30 10 Rain shwrs S S S C C Tstms S S $$ IAZ017-182100- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 643 AM CDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 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 86 63 86 68 92 Temp 74 77 81 85 84 73 68 65 65 77 82 85 84 75 71 70 71 81 88 91 87 Dewpt 72 68 66 66 68 66 64 62 62 67 66 66 68 66 65 65 67 73 74 74 73 RH 93 74 60 53 59 79 87 90 90 71 58 53 59 74 81 84 87 77 63 58 63 Wind dir NW N N N N NE NE NE E SE SE SE SE SE S S S SW SW SW SW Wind spd 8 8 8 8 5 2 1 1 2 4 4 5 6 6 8 10 9 11 12 11 10 Clouds B1 SC SC SC SC FW FW FW FW SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 0 0 20 60 QPF 12hr 0 0 0 0 0.19 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S L L C C S Tstms S S C S S C S Heat index 86 97101 94 Max heat 83 89 85 85 88 85 97 101 Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 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 67 81 58 78 58 80 61 82 Temp 74 67 78 78 65 60 76 76 63 61 77 78 66 63 79 79 Dewpt 64 61 62 59 54 54 56 57 56 57 60 61 60 60 63 63 PWind dir NW NW N NW SW SW S SE Wind char GN BZ LT LT LT LT LT LT Avg clouds SC FW FW FW FW FW FW SC SC SC SC SC SC SC SC SC PoP 12hr 20 0 0 0 10 20 20 20 Rain shwrs S S S S Tstms S $$ IAZ049-182100- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 643 AM CDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 64 88 68 94 Temp 75 81 85 88 85 74 69 66 66 78 84 86 85 75 70 69 70 84 91 94 89 Dewpt 71 73 73 71 70 67 65 63 63 68 67 67 66 66 65 65 67 73 75 74 73 RH 87 77 67 57 61 79 87 90 90 71 57 53 53 74 84 87 90 70 60 53 59 Wind dir W NW N N NE NE NE NE E E SE SE SE SE SE S S S SW SW SW Wind spd 6 6 6 8 8 4 3 2 3 3 3 3 3 4 5 6 6 9 10 10 9 Clouds SC SC SC SC FW FW FW FW FW FW FW FW FW FW SC SC SC FW FW FW SC PoP 12hr 10 0 0 5 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C Tstms S S C Heat index 92 94 91102104 98 Max heat 93 95 88 87 91 87 103 106 Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 83 59 80 59 81 62 83 Temp 76 70 80 80 65 61 76 77 64 62 78 78 67 64 79 80 Dewpt 67 64 64 61 57 56 57 57 57 57 61 60 60 60 64 63 PWind dir W NW N N S S S SE Wind char GN BZ LT LT LT LT LT LT Avg clouds SC FW FW FW FW FW FW FW SC SC SC SC SC SC SC SC PoP 12hr 40 0 0 0 20 20 30 20 Rain shwrs C S S S S C S Tstms C S $$ IAZ086-182100- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 643 AM CDT Sat Jul 18 2026 Date Sat 07/18/26 Sun 07/19/26 Mon 07/20/26 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 94 68 90 70 96 Temp 76 85 90 94 90 79 73 70 70 81 87 89 88 78 73 71 72 86 94 96 93 Dewpt 71 73 72 71 74 71 68 66 66 69 69 68 66 67 67 68 70 73 73 72 71 RH 85 67 56 47 60 77 84 87 87 67 55 50 48 69 81 90 93 65 51 46 49 Wind dir SW W NW NW N NE NE NE E E E E E E SE S S S SW SW SW Wind spd 5 8 8 8 9 6 4 3 4 5 4 4 6 6 5 6 6 9 10 10 9 Clouds FW CL SC SC SC SC SC FW FW FW FW FW CL FW FW SC FW FW FW FW SC PoP 12hr 30 20 5 0 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C Tstms S S S Heat index 92 98101 99 94 93102105100 Max heat 99 102 94 92 96 89 103 106 Date Tue 07/21/26 Wed 07/22/26 Thu 07/23/26 Fri 07/24/26 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 74 87 63 83 62 84 64 85 Temp 80 74 84 84 69 64 80 81 67 64 80 82 69 66 82 83 Dewpt 70 68 64 61 60 58 56 56 57 59 59 60 61 62 63 63 PWind dir W NW N N E S SE SE Wind char GN BZ GN LT LT LT LT LT Avg clouds SC FW FW FW FW FW FW FW SC SC SC SC SC SC SC SC PoP 12hr 30 5 0 0 20 20 30 20 Rain shwrs C S S S S C S Tstms S S $$