Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
494 FOUS53 KDMX 211018 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 517 AM CDT Mon Sep 21 2026 IAZ060-212100- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 517 AM CDT Mon Sep 21 2026 Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 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 60 54 62 48 65 Temp 58 57 58 60 59 57 57 56 55 55 57 60 59 54 52 50 48 54 60 65 61 Dewpt 56 56 58 59 58 57 57 56 54 54 55 56 54 54 52 50 48 51 53 55 55 RH 93 96100 96 96100100100 96 96 93 87 83100100100100 90 78 70 81 Wind dir NE NE NE NE NE NE NE NE NE NE E E E E E E E E E E E Wind spd 6 6 9 9 9 9 8 8 6 8 8 9 6 4 3 3 3 4 6 6 4 Clouds OV OV OV OV OV OV OV OV B2 B2 B2 B1 SC SC SC FW FW FW SC SC SC PoP 12hr 60 60 10 0 0 QPF 12hr 0.12 0.02 0 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle L L L C S S Rain shwrs L L C C Tstms S C Obvis PF PF PF PF PF PF Date Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 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 52 64 56 67 58 65 60 73 Temp 55 52 60 62 58 57 61 65 60 59 61 64 62 61 67 70 Dewpt 55 52 57 58 57 57 59 60 59 57 60 62 61 59 63 64 PWind dir E SE E SE SE SE SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC B1 B2 B2 B2 B1 B2 B2 B2 B2 OV B2 B2 B1 B1 B1 PoP 12hr 5 40 20 30 30 50 30 30 Rain shwrs C S C S C C C S C C Tstms S S $$ IAZ039-212100- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 517 AM CDT Mon Sep 21 2026 Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 59 50 61 45 66 Temp 55 55 58 58 57 54 53 52 51 55 59 61 58 52 49 47 45 55 63 66 62 Dewpt 52 53 55 55 55 54 53 52 51 52 52 50 50 50 48 47 45 51 53 51 53 RH 90 93 90 90 93100100100100 90 78 67 75 93 96100100 86 70 58 72 Wind dir NE E E E NE NE E NE NE E E E E E E NE NE E E E E Wind spd 11 12 12 12 10 10 9 9 8 9 10 10 5 4 4 4 4 6 8 8 4 Clouds OV OV OV OV OV OV OV B2 B2 B1 B1 SC SC FW FW FW FW FW FW FW FW PoP 12hr 50 60 10 0 0 QPF 12hr 0.11 0.03 0 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle C C C C C C S Rain shwrs C C C Tstms S Date Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 49 64 52 67 53 66 55 71 Temp 53 49 62 62 55 53 64 65 57 55 63 64 59 56 68 68 Dewpt 53 49 54 54 55 53 57 56 56 55 58 58 58 56 61 61 PWind dir E SE E SE SE SE SE SE Wind char LT LT LT LT LT GN LT LT Avg clouds SC SC B1 B2 B2 B1 B2 B1 B1 B2 B2 B2 B2 B1 B2 B1 PoP 12hr 0 20 5 10 20 30 30 20 Rain shwrs S S S C C S C S $$ IAZ048-212100- Ames-Story IA 41.99N 93.62W Elev. 936 ft 517 AM CDT Mon Sep 21 2026 Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 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 59 52 61 46 66 Temp 57 56 57 58 58 56 55 55 53 54 57 60 59 53 51 48 46 54 61 65 61 Dewpt 55 55 56 58 58 56 55 55 53 53 55 55 53 53 51 48 46 51 53 54 55 RH 93 96 96100100100100100100 96 93 84 80100100100100 90 75 68 81 Wind dir NE NE NE NE NE E E NE NE E E E E E E E E E E E E Wind spd 8 8 9 9 9 8 6 6 6 8 8 8 5 3 2 2 3 5 6 6 4 Wind gust 18 Clouds OV OV OV OV OV OV OV OV OV OV B2 B1 B1 FW SC FW FW FW SC SC SC PoP 12hr 70 60 10 0 0 QPF 12hr 0.17 0.03 0 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle L S S Rain shwrs L L C L Tstms C C Obvis PF PF PF PF PF PF Date Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 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 51 64 54 67 57 65 59 72 Temp 54 52 60 62 57 56 62 65 59 58 61 63 60 59 67 69 Dewpt 54 52 57 58 57 56 59 60 59 57 60 62 60 59 63 64 PWind dir SE SE E SE SE SE SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC B1 B2 B2 B2 B2 B2 B2 B2 B2 OV B2 B2 B1 B2 B1 PoP 12hr 5 40 10 30 30 50 40 30 Rain shwrs C C C S C C C S C C Tstms S $$ IAZ004-212100- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 517 AM CDT Mon Sep 21 2026 Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 54 48 60 43 64 Temp 53 51 52 54 53 53 52 51 49 53 58 59 57 50 48 45 44 53 61 64 62 Dewpt 51 50 52 53 53 52 51 49 47 51 51 51 51 50 48 45 44 50 50 52 52 RH 93 96100 96100 96 96 93 93 93 77 75 80100100100100 89 67 65 70 Wind dir NE NE NE NE NE NE E NE NE E E E E SE SE SE SE SE SE SE SE Wind spd 11 11 10 9 9 8 5 4 4 6 8 8 6 5 3 4 4 8 10 10 6 Clouds OV OV OV OV OV B2 B2 B1 SC SC B1 B1 SC FW FW FW FW FW FW SC SC PoP 12hr 80 40 5 0 0 QPF 12hr 0.10 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle C L C Rain shwrs L C C Tstms S Obvis PF PF PF PF PF PF PF Date Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 49 63 52 66 55 64 56 70 Temp 53 50 60 61 56 54 64 64 58 56 62 62 58 57 67 68 Dewpt 52 50 56 58 56 54 58 59 57 56 60 61 58 56 60 62 PWind dir SE S SE SE SE S SE SE Wind char LT GN LT GN GN GN GN GN Avg clouds B1 B2 B2 B2 B2 B2 B2 B1 B1 B1 B2 B2 B1 B1 B2 B1 PoP 12hr 40 50 20 30 40 50 30 30 Rain shwrs C C S C C S C C C S C C S Tstms S $$ IAZ035-212100- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 517 AM CDT Mon Sep 21 2026 Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 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 56 50 61 44 67 Temp 56 54 55 56 55 55 54 53 51 54 57 60 58 51 50 47 45 54 62 66 61 Dewpt 54 53 54 56 55 55 54 53 51 53 54 54 53 51 50 47 45 52 52 53 54 RH 93 96 96100100100100100100 96 90 81 83100100100100 93 70 63 78 Wind dir NE NE E NE NE NE NE NE NE E E E E E E E E SE SE SE SE Wind spd 9 10 8 6 6 6 5 5 4 5 5 5 4 3 2 2 3 4 5 5 3 Clouds OV OV OV OV OV OV B1 B2 B1 B1 B1 B1 SC SC FW SC SC FW FW SC FW PoP 12hr 80 50 10 0 0 QPF 12hr 0.21 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle C S Rain shwrs D L L L Tstms C Obvis PF PF PF PF PF PF PF Date Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 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 50 64 53 68 56 65 57 73 Temp 54 51 60 62 57 55 64 65 59 57 62 62 60 58 68 69 Dewpt 54 51 57 58 57 55 59 60 59 57 61 62 60 58 63 64 PWind dir SE SE SE SE SE SE SE SE Wind char LT LT LT LT LT GN LT LT Avg clouds SC B2 B2 B2 B2 B2 B2 B2 B1 B2 B2 B2 B1 B1 B2 B1 PoP 12hr 20 50 20 30 40 50 40 20 Rain shwrs S C S C C C C C S C S Tstms S $$ IAZ094-212100- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 517 AM CDT Mon Sep 21 2026 Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 63 55 61 48 64 Temp 60 60 61 63 61 60 59 58 56 56 59 60 58 55 53 50 48 54 61 64 60 Dewpt 59 59 61 62 61 60 59 58 56 56 58 58 57 55 53 50 48 52 56 57 57 RH 96 96100 97100100100100100100 96 93 96100100100100 93 84 78 90 Wind dir NE NE NE NE NE NE NE NE NE NE NE NE NE E E NE NE E E E E Wind spd 5 5 6 6 8 6 6 6 8 8 8 9 6 5 4 4 4 5 5 5 3 Clouds OV OV OV OV OV OV OV OV OV OV B2 B1 SC SC SC FW FW FW FW FW FW PoP 12hr 40 40 10 0 0 QPF 12hr 0.01 0.04 0 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle C S S S C C Rain shwrs Obvis PF PF Date Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 50 64 54 66 58 66 60 74 Temp 54 51 61 60 57 56 63 63 60 58 64 63 61 61 71 69 Dewpt 54 51 60 59 57 56 62 62 59 58 64 63 60 60 66 66 PWind dir E E E SE SE SE SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC B1 B2 B2 B2 B2 B2 B2 B2 B2 OV B1 B1 B1 B2 SC PoP 12hr 0 30 20 40 30 40 30 20 Rain shwrs C S S C S C C S S C S Tstms S S S $$ IAZ017-212100- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 517 AM CDT Mon Sep 21 2026 Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 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 56 47 59 41 65 Temp 53 51 54 55 55 53 52 50 48 53 58 59 56 49 47 45 42 53 62 65 60 Dewpt 50 49 53 54 53 53 52 49 46 52 52 50 49 49 47 45 42 52 51 51 52 RH 89 93 96 96 93100100 96 93 96 80 72 77100100100100 96 67 60 75 Wind dir NE NE E E NE E E NE NE E E E E E E E E E SE SE SE Wind spd 10 10 9 9 8 6 5 5 5 6 8 6 4 3 2 2 3 5 8 6 4 Clouds OV OV OV OV OV B2 B1 B1 SC B2 B1 B1 SC FW FW FW FW FW FW FW FW PoP 12hr 70 50 5 0 0 QPF 12hr 0.11 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle C C Rain shwrs L L C Tstms S Obvis PF PF Date Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 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 46 62 49 66 52 63 54 70 Temp 51 47 60 60 55 53 63 63 57 54 62 61 57 55 67 66 Dewpt 51 47 55 54 55 53 57 57 56 54 58 58 57 55 60 60 PWind dir SE SE SE SE SE SE SE SE Wind char LT LT LT LT LT GN LT LT Avg clouds SC B1 B2 B2 B2 B2 B2 B2 B1 B2 B2 B2 B2 B2 B2 B1 PoP 12hr 10 40 5 20 30 40 40 30 Rain shwrs C S S C C C S C C $$ IAZ049-212100- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 517 AM CDT Mon Sep 21 2026 Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 59 50 61 44 65 Temp 56 55 57 58 57 54 54 53 51 53 57 59 58 51 49 46 44 54 60 65 60 Dewpt 54 54 55 57 57 54 54 53 51 53 53 52 51 51 49 46 44 51 52 53 54 RH 93 96 93 96100100100100100100 86 78 77100100100100 90 75 65 81 Wind dir NE NE E NE NE NE NE NE NE NE E E E E E NE NE E E E E Wind spd 10 11 10 10 9 9 8 8 6 8 6 8 4 3 3 3 3 5 5 5 3 Clouds OV OV OV OV OV OV OV B2 B2 B2 B2 B1 SC FW FW FW FW FW SC SC SC PoP 12hr 60 60 10 0 0 QPF 12hr 0.07 0.05 0 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle L L C L C C S Rain shwrs L Tstms S Obvis PF PF PF PF Date Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 48 64 52 66 54 65 56 71 Temp 53 49 60 61 55 54 62 64 57 55 61 62 58 57 66 68 Dewpt 53 49 55 56 55 54 57 58 57 55 58 59 58 57 61 62 PWind dir E SE E SE SE SE SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC B1 B2 B2 B1 B2 B2 B2 B1 B2 B2 B2 B1 B2 B1 PoP 12hr 5 30 5 20 20 40 30 30 Rain shwrs C S S S S C C S C C S $$ IAZ086-212100- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 517 AM CDT Mon Sep 21 2026 Date Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 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 63 54 63 48 66 Temp 60 60 61 62 61 59 58 57 55 56 58 60 60 54 53 50 48 56 63 65 62 Dewpt 58 58 60 62 61 59 58 57 55 56 57 58 56 54 53 50 48 54 57 58 58 RH 93 93 97100100100100100100100 96 93 87100100100100 93 81 78 87 Wind dir NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE E E E E Wind spd 9 9 9 9 8 8 8 8 8 9 8 9 5 4 4 4 4 5 5 5 3 Clouds OV OV OV OV OV OV OV OV OV OV B2 SC B1 SC FW FW FW FW SC FW FW PoP 12hr 40 60 20 0 0 QPF 12hr 0.02 0.03 0 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle C S S C C C C C Rain shwrs S Obvis PF PF PF PF Date Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 Sun 09/27/26 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 51 66 54 68 56 66 59 75 Temp 56 52 62 63 58 56 64 65 59 57 62 63 60 59 69 70 Dewpt 56 52 59 59 58 56 61 61 59 57 62 62 60 59 64 65 PWind dir E E E E SE SE SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW SC B1 B1 B1 B2 B2 B2 B1 B1 B2 B2 B1 B1 B1 B1 PoP 12hr 0 10 5 10 20 30 20 20 Rain shwrs S C C S S S $$