Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
991 FOUS53 KDMX 201012 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 512 AM CDT Sun Sep 20 2026 IAZ060-202100- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 512 AM CDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 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 66 58 61 53 60 Temp 63 64 63 66 64 63 62 61 60 58 58 60 59 58 57 55 54 55 57 60 58 Dewpt 62 63 63 64 62 63 61 60 58 58 57 59 57 58 57 55 53 53 53 54 52 RH 97 97100 93 93100 97 97 93100 96 96 93100100100 96 93 86 81 80 Wind dir N NE NE NE NE NE E NE NE NE NE NE NE NE NE NE NE NE NE NE NE Wind spd 8 10 11 11 10 10 9 9 10 10 10 11 10 8 6 6 6 8 8 8 5 Clouds OV OV OV B2 OV OV OV OV OV OV OV OV OV B2 B2 B2 B2 B1 B2 B1 SC PoP 12hr 40 70 70 40 10 QPF 12hr 0.04 0.07 0.09 0.01 0 Snow 12hr 00-00 00-00 00-00 Drizzle C C C C Rain shwrs C C L L L C C C S S Tstms S S Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 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 47 63 50 64 55 67 55 69 Temp 51 47 60 60 53 52 61 61 57 56 63 64 59 57 65 65 Dewpt 51 47 51 53 53 52 56 58 57 56 60 61 59 57 62 62 PWind dir NE E E SE E E E SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC FW SC SC SC B2 B2 B1 B1 B2 B1 B1 B1 B2 B2 PoP 12hr 0 0 5 20 10 10 10 30 Rain shwrs S C S $$ IAZ039-202100- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 512 AM CDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 66 53 61 48 61 Temp 62 61 63 66 64 61 58 57 55 57 59 60 59 55 53 51 49 54 59 61 58 Dewpt 61 61 61 59 58 57 56 55 54 56 56 54 54 54 52 51 49 51 51 49 48 RH 97100 93 78 81 87 93 93 96 96 90 81 83 96 96100100 90 75 65 69 Wind dir NE NE NE NE NE E E NE NE NE NE NE NE NE NE NE NE NE NE NE E Wind spd 12 14 14 14 12 13 12 13 14 12 13 13 11 11 9 8 9 10 10 10 6 Wind gust 24 Clouds B2 B2 OV B2 OV OV OV OV B2 B2 B2 OV OV B2 B2 B2 B1 B1 B1 SC SC PoP 12hr 40 50 60 30 5 QPF 12hr 0 0.08 0.14 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle C C C S Rain shwrs S C C L C C C C S S Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 45 64 47 65 50 67 51 69 Temp 49 45 61 60 51 49 63 63 55 53 65 64 56 53 66 65 Dewpt 48 45 50 51 51 49 54 55 55 53 58 58 56 53 60 59 PWind dir NE E E SE E E E SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW FW SC B1 B1 B1 B1 B2 B1 SC B1 B1 B1 PoP 12hr 0 0 0 10 5 5 5 20 Rain shwrs S S $$ IAZ048-202100- Ames-Story IA 41.99N 93.62W Elev. 936 ft 512 AM CDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 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 65 56 60 51 60 Temp 62 63 62 65 63 62 61 59 58 57 57 59 58 57 56 53 51 54 58 60 57 Dewpt 61 62 62 63 61 61 60 59 57 57 57 58 56 57 56 53 51 52 53 52 51 RH 97 97100 93 93 97 97100 96100100 96 93100100100100 93 83 75 80 Wind dir N NE NE NE NE E E NE NE NE NE NE NE NE NE NE NE NE NE E E Wind spd 10 11 12 12 10 10 9 10 10 10 10 11 9 8 5 5 6 8 8 8 5 Wind gust 20 Clouds OV OV OV OV OV OV OV OV OV OV OV OV OV B2 B2 B2 B1 B1 B2 B1 SC PoP 12hr 60 70 80 20 10 QPF 12hr 0.03 0.07 0.07 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle C C C C C Rain shwrs C C L D C C S S S S Tstms S S Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 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 45 64 49 65 53 67 53 68 Temp 50 46 61 60 53 51 62 62 57 56 64 64 57 55 65 65 Dewpt 50 46 51 53 52 51 56 57 57 56 60 61 57 55 62 62 PWind dir E E E SE SE SE E SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC FW SC SC B1 B2 B2 B2 B2 B2 B1 B1 B1 B2 B2 PoP 12hr 0 0 5 20 5 10 20 30 Rain shwrs S S C C $$ IAZ004-202100- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 512 AM CDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 66 49 57 45 62 Temp 58 58 63 65 64 59 57 55 52 53 54 55 56 52 51 48 46 52 59 62 58 Dewpt 56 57 57 57 57 57 56 54 52 53 53 53 53 52 51 48 46 50 48 48 49 RH 93 96 81 75 78 93 96 96100100 96 93 90100100100100 93 67 60 72 Wind dir NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE E E E E Wind spd 12 16 14 13 11 11 10 10 10 10 10 10 9 6 4 4 4 6 8 6 5 Wind gust 24 25 Clouds OV B2 B2 OV OV OV OV OV OV OV OV OV B2 B1 SC SC SC FW SC FW FW PoP 12hr 30 80 70 10 5 QPF 12hr 0.02 0.27 0.12 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle S C C C Rain shwrs C C L D L L C C Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 41 65 46 66 51 69 52 70 Temp 46 42 61 61 50 49 62 64 56 54 65 66 57 54 65 67 Dewpt 46 42 48 51 50 49 55 57 56 54 58 60 57 54 60 61 PWind dir SE SE SE S S SE SE SE Wind char LT LT LT GN LT LT LT GN Avg clouds FW FW FW FW FW B1 B2 B2 B1 B1 B2 B1 B1 B1 B2 B1 PoP 12hr 0 0 10 40 5 5 10 20 Rain shwrs S C S $$ IAZ035-202100- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 512 AM CDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 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 65 52 59 48 62 Temp 60 62 62 64 63 60 59 57 54 55 56 57 57 55 54 51 49 53 59 61 58 Dewpt 59 61 61 60 60 60 59 57 54 55 56 56 56 55 54 51 49 52 51 50 51 RH 96 97 97 87 90100100100100100100 96 96100100100100 96 75 67 77 Wind dir NE NE NE NE NE NE E NE NE NE NE NE NE NE NE NE NE NE E E E Wind spd 11 11 12 10 8 9 8 9 10 9 9 8 8 5 4 4 4 6 5 5 3 Wind gust 23 Clouds OV OV OV OV OV OV OV OV OV OV OV OV OV B2 B2 B1 B1 B1 B1 SC SC PoP 12hr 60 80 80 10 5 QPF 12hr 0.02 0.22 0.17 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle C C C C C Rain shwrs C L C D L L C C Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 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 43 65 47 66 52 69 52 69 Temp 48 44 62 60 52 50 63 63 57 55 66 64 57 55 66 65 Dewpt 48 44 50 52 51 50 56 58 57 55 60 61 57 55 62 63 PWind dir E SE SE SE SE SE SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW SC B1 OV B2 B2 B2 B2 B1 B1 B1 B2 B1 PoP 12hr 0 0 10 20 10 5 20 30 Rain shwrs S S C S $$ IAZ094-202100- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 512 AM CDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 70 59 61 53 59 Temp 64 65 68 69 66 64 63 62 61 60 61 60 59 58 57 55 54 55 57 59 56 Dewpt 63 65 67 67 65 64 63 62 61 60 61 60 59 58 57 55 54 55 57 56 55 RH 97100 97 93 97100100100100100100100100100100100100100100 90 96 Wind dir N N N N NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE Wind spd 6 9 9 9 10 9 8 8 9 9 9 10 9 8 8 8 8 9 9 9 6 Clouds B2 B2 B2 OV OV OV OV OV OV OV B2 OV OV B2 OV OV OV B2 B2 B1 SC PoP 12hr 40 40 40 40 10 QPF 12hr 0.02 0.12 0.08 0.13 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C S C C C C C C C Tstms S Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 46 61 49 63 52 66 54 68 Temp 51 47 59 57 52 51 61 60 56 54 65 62 58 56 66 63 Dewpt 51 47 54 55 52 51 59 59 56 54 62 62 57 56 64 63 PWind dir NE E E SE E E E SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC FW SC SC SC B2 B2 B2 B2 B2 B1 B2 B2 B2 B1 PoP 12hr 0 0 5 20 20 20 20 30 Rain shwrs S S S S S S C S $$ IAZ017-202100- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 512 AM CDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 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 66 48 58 44 61 Temp 58 60 64 65 63 59 57 54 51 53 55 57 56 52 51 48 45 52 58 60 56 Dewpt 57 59 58 57 57 57 55 53 51 53 54 54 53 52 51 48 45 50 49 48 48 RH 96 96 81 75 81 93 93 96100100 96 90 90100100100100 93 72 64 74 Wind dir NE NE NE NE NE E E E NE NE NE NE NE NE NE NE NE E E E E Wind spd 12 13 13 12 9 10 10 10 11 10 10 10 8 6 4 4 5 8 8 6 4 Wind gust 24 24 24 Clouds OV B2 B2 B2 OV OV OV B2 OV OV OV B2 B2 B2 B1 B1 B1 SC SC SC SC PoP 12hr 20 50 60 20 5 QPF 12hr 0 0.15 0.09 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle S S Rain shwrs S C C C C S S S Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 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 41 64 44 64 48 67 49 68 Temp 47 42 61 59 50 48 62 62 55 53 65 64 56 53 65 64 Dewpt 47 42 49 50 50 48 54 55 55 53 57 58 56 53 59 59 PWind dir E E SE SE SE SE SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW B1 B2 B2 B1 B2 B2 B1 SC B1 B1 B1 PoP 12hr 0 0 5 20 5 5 5 20 Rain shwrs S S S $$ IAZ049-202100- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 512 AM CDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 65 54 61 49 60 Temp 62 62 62 65 63 61 59 57 56 56 57 59 58 55 54 51 49 53 57 60 57 Dewpt 61 62 61 61 60 59 58 57 56 56 56 56 55 55 54 51 49 52 51 50 49 RH 97100 97 87 90 93 96100100100 96 90 90100100100100 96 80 69 75 Wind dir NE NE NE NE NE NE E NE NE NE NE NE NE NE NE NE NE NE NE NE NE Wind spd 12 12 13 12 11 11 10 10 11 11 11 11 10 9 6 6 6 8 8 8 5 Clouds OV OV OV OV OV OV B2 B2 OV OV OV OV B2 B2 B2 B1 B1 B1 B2 SC SC PoP 12hr 50 50 60 30 10 QPF 12hr 0.03 0.07 0.14 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle C C C S Rain shwrs C C C L C C C C S S Tstms S Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 44 64 47 65 50 67 51 68 Temp 49 44 60 59 51 49 61 62 55 53 63 63 55 54 64 64 Dewpt 49 44 50 52 51 49 54 56 55 53 58 59 55 54 60 60 PWind dir NE E E SE E E E SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW FW SC B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 0 0 0 10 5 5 5 30 Rain shwrs S C $$ IAZ086-202100- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 512 AM CDT Sun Sep 20 2026 Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 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 70 59 63 54 61 Temp 67 68 68 69 67 64 63 61 61 61 61 61 60 59 58 56 54 56 59 60 58 Dewpt 66 68 68 67 66 64 63 61 61 61 61 61 60 59 58 56 54 56 56 56 54 RH 97100100 93 97100100100100100100100100100100100100100 90 87 86 Wind dir NW N NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE Wind spd 6 8 11 11 11 11 10 9 9 10 10 10 10 9 8 8 8 9 9 9 5 Clouds B2 B2 B2 B2 OV OV OV B2 B2 OV OV B2 B2 B2 B2 B2 B2 B2 B2 SC SC PoP 12hr 50 50 50 40 10 QPF 12hr 0.02 0.07 0.04 0.01 0 Snow 12hr 00-00 00-00 00-00 Drizzle C S C C Rain shwrs C C C C S C C C C C Tstms Date Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 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 47 64 50 65 53 68 54 69 Temp 52 48 62 60 54 52 63 62 57 55 66 64 59 56 68 65 Dewpt 52 48 55 56 54 52 58 59 57 55 62 62 59 56 63 63 PWind dir NE NE E E E E E SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW SC SC B2 B1 B1 B1 B2 B1 B1 B1 B2 B1 PoP 12hr 0 0 0 10 5 10 20 20 Rain shwrs S S S $$