340
FOUS53 KDMX 011420
PFMDMX
POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE DES MOINES IA
920 AM CDT TUE SEP 1 2026
IAZ060-012100-
DES MOINES-POLK IA
41.54N 93.65W ELEV. 924 FT
920 AM CDT TUE SEP 1 2026
DATE TUE 09/01/26 WED 09/02/26 THU 09/03/26
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 76 94 76 95
TEMP 83 91 94 91 82 81 78 76 83 90 93 90 82 80 78 76 84 93 94 92
DEWPT 72 70 69 72 68 65 65 64 68 69 70 71 68 67 67 67 70 71 70 69
RH 70 50 44 54 63 58 64 66 61 50 47 54 63 65 69 74 63 49 46 47
WIND DIR S S S S S S S S SW SW SW S S S S S SW SW S S
WIND SPD 5 6 8 4 8 9 8 8 9 10 9 4 8 8 8 8 8 10 11 9
CLOUDS SC SC SC FW FW SC SC SC FW SC CL FW FW FW SC SC SC SC FW FW
POP 12HR 5 5 10 5 10
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
HEAT INDEX 97100 99 95 99 96 100100
MAX HEAT 99 101 96 83 97 100 95 83 101 101
HEAT Y Y Y Y Y Y Y Y Y Y Y
DATE FRI 09/04/26 SAT 09/05/26 SUN 09/06/26 MON 09/07/26
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 77 94 76 96 73 92 70 90
TEMP 82 77 90 93 80 76 94 91 78 74 89 88 75 71 86 86
DEWPT 68 68 71 68 68 69 68 69 70 69 68 67 68 66 66 65
PWIND DIR S S S S SE E E S
WIND CHAR GN GN LT LT LT LT LT LT
AVG CLOUDS FW SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC
POP 12HR 5 20 5 20 30 20 10 20
RAIN SHWRS S S C S S
TSTMS S S C S
IAZ039-012100-
WATERLOO/CEDAR FALLS-BLACK HAWK IA
42.55N 92.40W ELEV. 865 FT
920 AM CDT TUE SEP 1 2026
DATE TUE 09/01/26 WED 09/02/26 THU 09/03/26
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 72 90 72 90
TEMP 80 87 89 85 77 75 74 72 79 87 89 85 78 76 74 72 78 86 88 87
DEWPT 74 75 75 76 73 70 67 66 70 72 72 74 72 70 69 68 72 74 74 75
RH 82 68 64 75 87 84 79 81 74 61 57 70 82 82 84 87 82 68 63 68
WIND DIR S SW S SE SE S SE SE S SW SW W SE E SE SE SE S S SE
WIND SPD 3 4 4 4 4 5 6 4 6 9 8 3 3 4 4 3 5 9 10 9
CLOUDS B1 SC B1 SC FW SC B1 SC FW FW FW FW FW FW SC SC SC SC SC FW
POP 12HR 20 5 10 20 50
QPF 12HR 0 0 0 0.01 0.09
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S S S S C C
TSTMS S S S S S C C
HEAT INDEX 95 97 94 94 96 94 93 97 97
MAX HEAT 96 99 90 94 97 90 94 100
DATE FRI 09/04/26 SAT 09/05/26 SUN 09/06/26 MON 09/07/26
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 73 90 72 91 70 87 66 84
TEMP 78 74 86 86 76 73 87 85 75 72 84 82 71 67 80 79
DEWPT 70 69 75 73 70 70 72 72 70 69 70 69 67 65 67 66
PWIND DIR S S SE SE SE E E SE
WIND CHAR LT GN LT LT LT LT LT GN
AVG CLOUDS FW SC SC FW FW SC SC FW FW SC B1 SC FW SC SC SC
POP 12HR 20 20 10 20 30 20 20 20
RAIN SHWRS S S S S C S S S
TSTMS S S S S S S S
IAZ048-012100-
AMES-STORY IA
41.99N 93.62W ELEV. 936 FT
920 AM CDT TUE SEP 1 2026
DATE TUE 09/01/26 WED 09/02/26 THU 09/03/26
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 91 73 91 73 93
TEMP 81 88 91 88 79 78 75 73 80 88 90 88 79 77 75 74 80 89 91 89
DEWPT 74 73 72 75 72 68 66 65 69 71 72 74 71 69 68 68 71 73 72 73
RH 79 61 54 66 79 71 74 76 69 57 56 63 77 76 79 82 74 59 54 59
WIND DIR S S S SE SE S SW S SW SW SW S SE S S S SE S S S
WIND SPD 2 4 5 3 4 6 8 5 8 9 8 2 4 5 5 4 6 10 10 6
CLOUDS B1 SC SC SC FW SC SC SC SC SC CL SC FW FW SC SC B1 SC FW FW
POP 12HR 10 5 10 10 30
QPF 12HR 0 0 0 0 0.02
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S C C
TSTMS S S C S
HEAT INDEX 96 99 98 94 97 97 97100 97
MAX HEAT 97 101 95 95 99 94 98 101
DATE FRI 09/04/26 SAT 09/05/26 SUN 09/06/26 MON 09/07/26
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 92 73 95 71 91 69 88
TEMP 79 75 88 90 77 74 91 89 76 72 87 86 73 69 85 83
DEWPT 69 69 73 71 69 69 70 71 71 69 69 69 68 66 68 66
PWIND DIR S S S S SE E E SE
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS FW SC SC FW SC SC SC SC SC SC SC SC SC SC B1 SC
POP 12HR 10 20 5 20 30 30 10 20
RAIN SHWRS S S C C S
TSTMS S S C S
IAZ004-012100-
ESTHERVILLE-EMMET IA
43.40N 94.75W ELEV. 1315 FT
920 AM CDT TUE SEP 1 2026
DATE TUE 09/01/26 WED 09/02/26 THU 09/03/26
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 87 64 85 67 87
TEMP 76 85 87 82 72 69 66 64 72 80 84 81 73 71 69 68 76 84 86 85
DEWPT 66 67 67 70 68 67 65 64 68 69 70 71 69 68 67 66 69 71 72 72
RH 71 55 52 67 87 93 97100 87 69 63 72 87 90 93 93 79 65 63 65
WIND DIR E E SE SE E NE NE SE N N E NE E E SE SE SE S S S
WIND SPD 2 4 5 4 5 8 6 4 4 3 4 4 5 5 8 9 12 13 12 9
CLOUDS B2 B2 B2 SC SC OV B2 B1 B1 FW CL CL FW SC B1 B1 FW FW FW FW
POP 12HR 10 80 5 60 50
QPF 12HR 0 0.21 0 0.13 0.10
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C D C L L C C S
TSTMS C C C S C C C S
HEAT INDEX 89 89 92 91
MAX HEAT 86 90 83 89 89 94
DATE FRI 09/04/26 SAT 09/05/26 SUN 09/06/26 MON 09/07/26
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 71 89 70 88 69 84 64 82
TEMP 75 71 83 84 75 71 84 84 74 70 82 81 70 65 79 78
DEWPT 69 67 72 71 68 68 69 71 68 67 67 68 65 62 65 66
PWIND DIR S S S S SE E SE SE
WIND CHAR GN GN LT GN GN GN GN GN
AVG CLOUDS FW SC SC FW FW FW SC SC SC SC B1 SC SC SC B1 SC
POP 12HR 40 20 10 20 30 20 20 20
RAIN SHWRS S C S S S S C S S S
TSTMS S C S S S S C S S S
IAZ035-012100-
FORT DODGE-WEBSTER IA
42.55N 94.18W ELEV. 1165 FT
920 AM CDT TUE SEP 1 2026
DATE TUE 09/01/26 WED 09/02/26 THU 09/03/26
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 70 90 70 88
TEMP 79 86 89 85 76 74 72 70 77 85 89 86 77 75 72 71 77 85 87 86
DEWPT 73 73 73 75 72 68 66 65 69 71 72 73 71 69 67 67 71 73 74 74
RH 82 65 59 72 87 82 81 84 76 63 57 65 82 82 84 87 82 67 65 68
WIND DIR SE SE SE E SE SE N E SW SW SW SE E SE SE S SE S S S
WIND SPD 1 4 6 3 4 5 6 3 4 4 3 1 3 4 4 4 8 11 11 6
CLOUDS B1 B1 SC SC SC SC B2 B2 SC SC SC FW FW SC B1 B1 SC SC FW FW
POP 12HR 20 30 10 50 50
QPF 12HR 0 0 0 0.06 0.05
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S S C S C C C C
TSTMS S S S C S S S C C
HEAT INDEX 95 93 90 95 93 91 94 94
MAX HEAT 91 97 90 90 97 90 92 97
DATE FRI 09/04/26 SAT 09/05/26 SUN 09/06/26 MON 09/07/26
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 90 71 92 70 88 67 86
TEMP 77 72 86 87 76 72 88 87 75 71 85 83 72 68 82 81
DEWPT 68 68 73 72 68 69 71 71 69 68 69 69 66 64 68 67
PWIND DIR S S S S SE E SE SE
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS FW SC SC FW FW SC B1 FW SC SC B1 SC SC B1 B1 SC
POP 12HR 30 30 10 20 30 20 10 20
RAIN SHWRS C C S C S S
TSTMS C C S C S S
IAZ094-012100-
LAMONI-DECATUR IA
40.63N 93.90W ELEV. 1125 FT
920 AM CDT TUE SEP 1 2026
DATE TUE 09/01/26 WED 09/02/26 THU 09/03/26
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 76 94 77 94
TEMP 83 91 94 90 83 80 78 76 84 91 93 90 83 81 79 77 84 91 92 91
DEWPT 67 68 67 64 64 64 63 63 66 67 66 65 66 66 66 66 68 69 67 66
RH 59 47 41 42 53 58 60 64 55 45 41 44 57 60 64 69 59 49 44 44
WIND DIR S SW S S S S SW SW SW SW SW S S S S S SW SW S S
WIND SPD 9 10 10 9 8 8 8 9 11 12 11 8 6 8 8 8 11 12 12 11
CLOUDS FW FW FW CL FW SC SC FW FW FW FW FW FW FW FW FW FW FW FW FW
POP 12HR 0 0 0 0 5
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
HEAT INDEX 96
MAX HEAT 95 97 90 82 96 99 90 82 97 98
HEAT Y Y Y Y Y Y Y Y Y Y Y
DATE FRI 09/04/26 SAT 09/05/26 SUN 09/06/26 MON 09/07/26
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 77 93 76 95 73 92 70 89
TEMP 82 77 90 92 80 77 93 90 78 74 90 88 75 71 88 85
DEWPT 68 67 69 65 67 68 66 66 69 68 65 65 68 66 65 63
PWIND DIR S S S S SE SE E S
WIND CHAR GN GN LT LT LT LT LT LT
AVG CLOUDS FW FW FW FW FW SC SC SC SC SC SC SC SC SC B1 SC
POP 12HR 0 10 5 20 20 20 10 10
RAIN SHWRS S S S
TSTMS S S S
IAZ017-012100-
MASON CITY-CERRO GORDO IA
43.16N 93.33W ELEV. 1189 FT
920 AM CDT TUE SEP 1 2026
DATE TUE 09/01/26 WED 09/02/26 THU 09/03/26
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 87 67 86 68 87
TEMP 77 84 87 82 74 71 69 67 75 82 85 82 74 72 70 69 76 83 85 84
DEWPT 69 71 71 73 71 68 66 66 70 70 70 72 70 69 68 68 71 72 72 73
RH 76 65 59 74 90 90 90 97 84 67 61 72 87 90 93 97 85 70 65 70
WIND DIR S SE S SE E NE N E S SW W N NE E SE SE SE S S S
WIND SPD 3 3 4 2 3 4 6 4 4 4 3 2 3 3 4 4 8 11 11 6
CLOUDS B1 B1 B1 B1 SC B1 B2 B1 SC SC SC FW FW SC B1 B1 SC SC FW FW
POP 12HR 20 60 10 70 60
QPF 12HR 0 0.05 0 0.06 0.11
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S S L C L L L L
TSTMS S S S C C S C C S
HEAT INDEX 89 87 90 87 88 91 91
MAX HEAT 90 91 86 91 84 89 93
DATE FRI 09/04/26 SAT 09/05/26 SUN 09/06/26 MON 09/07/26
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 71 89 70 90 68 85 63 81
TEMP 75 72 84 86 74 71 86 85 72 70 82 81 69 64 78 77
DEWPT 70 69 73 71 69 69 70 71 69 68 68 68 66 63 66 66
PWIND DIR S S SE SE SE E SE SE
WIND CHAR LT GN LT LT LT LT LT LT
AVG CLOUDS FW SC SC FW FW SC SC FW SC SC B1 SC SC SC B1 SC
POP 12HR 50 40 10 20 30 30 20 20
RAIN SHWRS C C S S C C S S S S
TSTMS C C S S C S S S
IAZ049-012100-
MARSHALLTOWN-MARSHALL IA
42.11N 92.91W ELEV. 972 FT
920 AM CDT TUE SEP 1 2026
DATE TUE 09/01/26 WED 09/02/26 THU 09/03/26
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 91 72 91 72 91
TEMP 81 88 91 86 77 76 74 72 80 87 90 85 77 75 74 72 80 87 90 88
DEWPT 74 74 72 74 71 67 65 64 69 70 72 73 71 68 67 67 71 72 72 72
RH 79 63 54 68 82 74 74 76 69 57 56 67 82 79 79 84 74 61 56 59
WIND DIR S S S SE SE S SW SE SW SW SW S SE S S S S S S S
WIND SPD 3 5 8 3 4 5 6 4 6 9 6 2 3 4 5 4 5 8 9 8
CLOUDS B1 B1 SC FW CL FW SC SC SC SC CL CL FW FW FW SC B1 SC FW FW
POP 12HR 10 5 5 10 20
QPF 12HR 0 0 0 0 0.02
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S
TSTMS S S
HEAT INDEX 95 98 94 92 96 93 94 97 95
MAX HEAT 97 99 89 93 98 89 96 100
DATE FRI 09/04/26 SAT 09/05/26 SUN 09/06/26 MON 09/07/26
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 73 92 71 94 70 89 66 87
TEMP 78 74 87 87 75 73 90 87 75 72 86 83 71 67 83 81
DEWPT 68 68 72 70 68 69 70 71 70 68 68 68 67 64 66 65
PWIND DIR S S S S SE E E SE
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS FW FW SC FW FW SC SC SC SC SC SC SC FW SC SC SC
POP 12HR 10 20 5 20 30 30 10 20
RAIN SHWRS S S C C S
TSTMS S S C S
IAZ086-012100-
OTTUMWA-WAPELLO IA
41.11N 92.45W ELEV. 836 FT
920 AM CDT TUE SEP 1 2026
DATE TUE 09/01/26 WED 09/02/26 THU 09/03/26
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 77 95 77 95
TEMP 84 92 95 90 82 80 79 77 84 92 94 89 82 80 79 77 84 92 93 91
DEWPT 71 69 68 72 68 67 66 66 71 71 71 72 70 69 68 68 72 72 72 72
RH 65 47 42 56 63 65 64 69 65 51 47 57 67 69 69 74 67 52 51 54
WIND DIR SW SW SW S S S SW SW SW SW SW S S S S SW SW SW S S
WIND SPD 5 8 9 6 9 8 8 6 10 11 10 8 8 6 6 6 8 9 10 8
CLOUDS SC SC FW CL FW FW FW SC FW FW FW CL SC FW FW SC FW FW FW FW
POP 12HR 0 0 0 5 5
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
HEAT INDEX 89 98100 97 89 98101 96 90100101 99
MAX HEAT 99 101 93 82 99 101 92 101 102
HEAT Y Y Y Y Y Y Y Y Y Y Y
DATE FRI 09/04/26 SAT 09/05/26 SUN 09/06/26 MON 09/07/26
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 77 94 75 95 73 92 70 89
TEMP 81 77 90 91 79 76 93 89 76 74 89 87 73 70 85 85
DEWPT 70 70 72 70 69 71 70 71 71 71 69 70 70 68 67 67
PWIND DIR S S S S SE E E SE
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS FW FW FW FW FW FW SC SC FW SC B1 SC FW SC B1 SC
POP 12HR 0 10 5 20 30 20 10 10
RAIN SHWRS S S C C S
TSTMS S S S
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