185  
FOUS53 KFSD 161956  
PFMFSD  
 
POINT FORECAST MATRICES  
NATIONAL WEATHER SERVICE SIOUX FALLS SD  
256 PM CDT FRI APR 16 2021  
 
IAZ012-171000-  
SIOUX CENTER-SIOUX IA  
43.08N 96.18W ELEV. 1446 FT  
256 PM CDT FRI APR 16 2021  
 
DATE 04/16/21 SAT 04/17/21 SUN 04/18/21 MON  
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 37 52 31 61 32  
TEMP 46 46 44 42 40 38 42 47 51 51 44 39 35 33 45 55 60 58 48 41 36 32  
DEWPT 37 37 38 37 35 35 36 36 36 35 34 33 31 30 32 31 30 31 32 33 31 28  
RH 71 71 79 82 82 89 79 65 56 54 68 79 85 89 60 40 32 36 54 73 82 85  
WIND DIR N N N N N N N N NW NW NW NW NW W W W W W SW N N N  
WIND SPD 8 9 8 9 10 10 11 11 12 11 6 5 4 5 10 12 13 11 9 11 12 16  
CLOUDS OV OV OV OV OV OV B2 B2 B2 B1 B1 SC SC FW FW SC SC SC SC B2 B2 B2  
POP 12HR 20 20 0 0 40  
QPF 12HR 0 0.02 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN C C  
RAIN SHWRS S S S S S S S S  
SNOW C C  
SPRINKLES C C  
WIND CHILL 33 31 31 28 34 28 21  
MIN CHILL 31 31 28 32 34 21  
 
DATE 04/19 TUE 04/20/21 WED 04/21/21 THU 04/22/21 FRI 04/23/21  
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 42 25 42 24 49 31 58 37 58  
TEMP 38 40 30 25 40 42 29 26 45 49 36 32 53 54 44 39 52 54  
DEWPT 24 19 20 19 20 20 21 20 23 24 25 26 32 34 36 36 37 33  
PWIND DIR N N NW NW W SW S S NW  
WIND CHAR BZ GN GN GN GN GN BZ GN GN  
AVG CLOUDS B2 B2 B2 B1 B1 B1 SC FW FW SC FW FW FW B1 B2 B1 B1 B1  
POP 12HR 50 5 20 0 0 0 20 20 10  
RAIN S S  
RAIN SHWRS S S S  
SNOW C S  
 

 
IAZ031-171000-  
SIOUX CITY-WOODBURY IA  
42.40N 96.38W ELEV. 1210 FT  
256 PM CDT FRI APR 16 2021  
 
DATE 04/16/21 SAT 04/17/21 SUN 04/18/21 MON  
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 39 54 32 63 34  
TEMP 47 47 45 43 42 40 44 50 53 51 45 41 37 34 47 57 63 60 49 44 39 37  
DEWPT 36 37 38 37 37 35 37 37 36 36 36 34 33 30 32 31 29 31 32 32 31 29  
RH 65 68 76 79 82 82 76 61 52 56 70 76 85 85 56 37 27 33 52 62 73 72  
WIND DIR N N NW NW N N N N NW NW NW NW NW NW W W W W SW W N N  
WIND SPD 8 9 9 9 9 10 12 12 13 11 6 5 5 4 8 10 12 10 6 9 10 12  
CLOUDS OV OV OV OV OV OV B2 B2 B2 B1 B1 SC SC FW FW SC SC SC FW SC B1 B2  
POP 12HR 30 20 0 0 10  
QPF 12HR 0.02 0.02 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN S S C  
RAIN SHWRS S S S C C S S S S  
SNOW S  
WIND CHILL 33 32 30 32 29  
MIN CHILL 32 33 29 34 27  
 
DATE 04/19 TUE 04/20/21 WED 04/21/21 THU 04/22/21 FRI 04/23/21  
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 45 26 46 25 53 31 60 39 61  
TEMP 40 43 32 27 43 44 31 27 48 52 37 33 56 56 45 41 55 56  
DEWPT 26 21 20 21 20 21 22 21 23 23 25 26 33 35 37 36 38 35  
PWIND DIR N N NW NW NW SW S S NW  
WIND CHAR BZ GN GN GN GN LT GN GN GN  
AVG CLOUDS B2 B2 B2 B1 B1 B1 SC FW FW FW FW FW SC B1 B1 B1 B1 SC  
POP 12HR 50 10 10 0 0 5 20 20 10  
RAIN C C  
RAIN SHWRS S S S  
SNOW C S  
 

 
IAZ014-171000-  
SPENCER-CLAY IA  
43.15N 95.18W ELEV. 1325 FT  
256 PM CDT FRI APR 16 2021  
 
DATE 04/16/21 SAT 04/17/21 SUN 04/18/21 MON  
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 38 55 32 61 32  
TEMP 50 49 45 43 40 39 46 53 54 51 44 40 36 34 48 56 60 57 48 42 38 34  
DEWPT 37 38 38 37 36 35 36 35 35 35 35 33 32 29 32 31 31 32 33 33 32 29  
RH 61 66 76 79 85 85 68 50 48 54 70 76 85 82 54 38 33 38 56 70 79 82  
WIND DIR N N N N N N N N N NW NW NW NW W W W W W SW NW N N  
WIND SPD 9 9 9 10 10 10 12 11 12 11 6 5 5 5 11 12 13 12 9 11 12 14  
CLOUDS B2 OV OV OV B2 B2 B2 B1 B2 B1 B1 SC SC FW FW SC SC SC SC B1 B2 OV  
POP 12HR 10 20 0 0 30  
QPF 12HR 0 0.01 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN C C C  
RAIN SHWRS S S  
SNOW S C  
SPRINKLES C  
WIND CHILL 33 32 31 29 30 24  
MIN CHILL 32 33 29 33 24  
 
DATE 04/19 TUE 04/20/21 WED 04/21/21 THU 04/22/21 FRI 04/23/21  
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 43 25 43 25 49 31 58 38 58  
TEMP 40 40 30 26 41 41 31 27 46 49 37 33 55 55 44 40 53 53  
DEWPT 26 22 20 19 21 22 22 20 24 26 25 26 33 35 36 36 38 36  
PWIND DIR N N NW NW W W SW S NW  
WIND CHAR BZ GN GN GN BZ GN BZ GN GN  
AVG CLOUDS B2 B2 B1 B1 B1 B1 SC FW FW SC FW FW FW SC B1 B1 B1 B1  
POP 12HR 50 5 20 0 0 0 10 20 20  
RAIN C S  
RAIN SHWRS S S S  
SNOW C  
 

 
IAZ022-171000-  
STORM LAKE-BUENA VISTA  
42.60N 95.23W ELEV. 1427 FT  
256 PM CDT FRI APR 16 2021  
 
DATE 04/16/21 SAT 04/17/21 SUN 04/18/21 MON  
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 39 54 33 60 34  
TEMP 48 48 45 43 41 40 46 52 53 51 45 42 38 36 48 55 60 57 48 43 39 36  
DEWPT 36 36 38 38 36 35 37 35 36 37 36 36 34 32 32 31 30 31 32 32 33 32  
RH 63 63 76 82 82 82 71 52 52 59 70 79 85 85 54 40 32 37 54 65 79 85  
WIND DIR N N N N N N N N NW NW NW NW NW NW W W W W SW SW N N  
WIND SPD 8 8 9 10 10 10 11 11 12 12 6 6 6 6 10 12 13 11 9 10 11 13  
CLOUDS OV OV OV OV OV B2 B2 B2 B2 B1 B1 B1 B1 SC FW SC SC SC SC B1 B1 B2  
POP 12HR 20 20 0 0 20  
QPF 12HR 0 0 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN S S C  
RAIN SHWRS S S S  
SNOW C  
SPRINKLES C C  
WIND CHILL 33 33 30 32 27  
MIN CHILL 33 33 29 34 27  
 
DATE 04/19 TUE 04/20/21 WED 04/21/21 THU 04/22/21 FRI 04/23/21  
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 43 26 43 26 50 31 58 39 58  
TEMP 40 41 31 27 41 42 31 27 46 49 37 33 54 55 44 41 53 53  
DEWPT 27 22 21 21 21 22 23 21 24 24 25 26 32 35 37 37 39 36  
PWIND DIR N N NW NW NW W SW S NW  
WIND CHAR BZ GN GN GN GN GN BZ GN GN  
AVG CLOUDS B2 B2 B2 B2 B1 B1 SC FW FW FW FW FW FW SC B2 B1 B1 SC  
POP 12HR 40 10 10 0 0 0 20 20 20  
RAIN C C  
RAIN SHWRS S S S S  
SNOW C C  
 

 
MNZ072-171000-  
MARSHALL-LYON MN  
44.47N 95.82W ELEV. 1151 FT  
256 PM CDT FRI APR 16 2021  
 
DATE 04/16/21 SAT 04/17/21 SUN 04/18/21 MON  
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 37 53 34 60 30  
TEMP 51 50 45 42 40 38 42 48 52 51 43 38 36 35 49 56 59 56 44 37 34 31  
DEWPT 36 36 37 36 35 34 34 35 33 30 32 30 30 28 31 31 31 34 35 31 28 25  
RH 56 58 73 79 82 85 73 60 48 44 65 73 79 75 50 38 34 43 70 79 78 78  
WIND DIR N N NW NW NW NW NW NW NW NW NW W W SW W W W NW N N N N  
WIND SPD 10 10 10 11 10 10 13 12 12 10 6 5 8 9 12 13 13 11 14 14 16 17  
CLOUDS B2 OV B2 B2 B2 B2 B2 B1 SC SC SC FW FW FW SC SC SC B1 B2 B2 B2 B2  
POP 12HR 20 10 0 5 60  
QPF 12HR 0 0 0 0 0.16  
SNOW 12HR 00-00 00-00 00-00  
RAIN C C L  
RAIN SHWRS S  
SNOW L L  
SPRINKLES C C C  
WIND CHILL 33 31 34 30 28 28 24 20  
MIN CHILL 34 31 31 33 27 33 28 19  
 
DATE 04/19 TUE 04/20/21 WED 04/21/21 THU 04/22/21 FRI 04/23/21  
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 40 25 41 26 48 32 58 37 57  
TEMP 38 39 29 26 39 41 30 28 45 48 37 34 53 55 44 39 51 51  
DEWPT 21 20 19 18 20 20 20 20 24 26 26 25 31 34 34 33 33 31  
PWIND DIR N NW NW NW W W SW SW NW  
WIND CHAR BZ GN GN GN BZ GN BZ GN BZ  
AVG CLOUDS B2 B2 SC SC SC B1 SC FW FW SC FW FW FW SC B1 B1 B1 B1  
POP 12HR 10 0 10 5 0 0 5 10 10  
 

 
MNZ081-171000-  
WINDOM-COTTONWOOD MN  
43.87N 95.12W ELEV. 1355 FT  
256 PM CDT FRI APR 16 2021  
 
DATE 04/16/21 SAT 04/17/21 SUN 04/18/21 MON  
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 37 53 33 60 31  
TEMP 51 50 45 42 40 38 44 51 52 51 43 38 35 34 48 55 59 56 46 40 35 32  
DEWPT 36 36 37 36 35 34 35 33 33 33 32 31 30 28 30 29 29 31 34 33 30 27  
RH 56 58 73 79 82 85 70 50 48 50 65 76 82 78 49 37 32 38 63 76 82 81  
WIND DIR N N N N N N N N NW NW NW NW W W W W W W NW N N N  
WIND SPD 8 10 8 10 10 10 13 12 13 11 5 5 5 5 11 13 13 11 10 13 13 14  
WIND GUST 24 25  
CLOUDS B2 B2 B2 B2 B2 B2 B1 B1 B1 SC SC SC FW FW FW B1 SC B1 B2 B2 B2 B2  
POP 12HR 10 5 0 5 60  
QPF 12HR 0 0 0 0 0.06  
SNOW 12HR 00-00 00-00 00-00  
RAIN S S L S  
SNOW S L S  
WIND CHILL 33 31 34 30 29 32 26 22  
MIN CHILL 30 32 34 28 33 31 21  
 
DATE 04/19 TUE 04/20/21 WED 04/21/21 THU 04/22/21 FRI 04/23/21  
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 40 25 41 25 48 31 57 37 56  
TEMP 38 38 29 26 39 40 30 27 45 47 36 33 53 54 43 39 52 51  
DEWPT 23 20 19 18 19 21 20 19 22 24 26 25 30 33 34 35 34 32  
PWIND DIR NW NW NW NW W W SW SW NW  
WIND CHAR BZ GN GN GN BZ GN GN GN BZ  
AVG CLOUDS B2 B2 B1 SC SC B1 SC FW FW SC FW FW FW SC B1 B1 B1 B1  
POP 12HR 20 0 10 0 0 0 10 10 10  
SNOW S  
 

 
MNZ089-171000-  
WORTHINGTON-NOBLES MN  
43.65N 95.58W ELEV. 1584 FT  
256 PM CDT FRI APR 16 2021  
 
DATE 04/16/21 SAT 04/17/21 SUN 04/18/21 MON  
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 37 52 32 59 30  
TEMP 47 47 44 41 39 37 42 49 51 49 42 38 35 34 46 54 58 56 46 39 35 32  
DEWPT 37 38 37 36 35 34 35 35 35 34 32 31 29 28 31 31 31 33 34 33 30 27  
RH 68 71 76 82 85 89 76 58 54 56 67 76 78 78 55 41 36 42 63 79 82 81  
WIND DIR N N N N N N N N NW NW NW NW W W W W W W NW N N N  
WIND SPD 8 9 10 10 11 11 13 12 12 11 6 6 6 8 12 13 14 11 11 14 16 17  
CLOUDS B2 B2 OV B2 B2 B2 B2 B1 B2 B1 SC SC FW FW FW SC SC B1 B2 B2 B2 B2  
POP 12HR 10 10 0 5 60  
QPF 12HR 0 0 0 0 0.06  
SNOW 12HR 00-00 00-00 00-00  
RAIN L S  
SNOW S L C  
SPRINKLES C C C  
WIND CHILL 32 29 33 29 27 31 25 21  
MIN CHILL 33 29 30 32 26 31 29 20  
 
DATE 04/19 TUE 04/20/21 WED 04/21/21 THU 04/22/21 FRI 04/23/21  
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 40 24 40 25 47 30 56 36 56  
TEMP 37 37 28 25 38 39 28 27 44 47 35 32 52 53 43 39 51 51  
DEWPT 24 21 20 18 20 22 21 19 23 26 26 25 32 35 35 35 36 34  
PWIND DIR N NW NW NW W W SW SW NW  
WIND CHAR BZ GN GN GN BZ GN BZ GN BZ  
AVG CLOUDS B2 B2 B1 SC B1 B1 SC FW FW SC FW FW FW SC B1 B1 B1 B1  
POP 12HR 40 0 20 5 0 0 10 10 10  
RAIN SHWRS S  
SNOW C  
SNOWSHWRS S  
 

 
SDZ040-171000-  
BROOKINGS-BROOKINGS SD  
44.30N 96.80W ELEV. 1617 FT  
256 PM CDT FRI APR 16 2021  
 
DATE 04/16/21 SAT 04/17/21 SUN 04/18/21 MON  
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 34 50 30 59 27  
TEMP 47 45 42 39 37 36 39 45 49 49 41 36 33 32 45 54 58 53 41 35 31 28  
DEWPT 35 36 36 35 34 33 34 35 33 32 31 30 29 28 31 30 31 34 34 30 27 24  
RH 63 70 79 85 89 89 82 68 54 52 67 79 85 85 58 40 36 48 76 82 85 85  
WIND DIR N N N N N N N N NW NW NW W W SW W W W NW N N N N  
WIND SPD 10 10 9 10 10 9 12 12 11 10 5 5 4 6 12 16 14 12 14 16 16 17  
WIND GUST 28 27  
CLOUDS OV OV OV OV OV OV B2 B2 B1 SC FW FW FW FW SC SC SC B1 B2 B2 B2 B2  
POP 12HR 40 30 0 5 60  
QPF 12HR 0.01 0.01 0 0 0.12  
SNOW 12HR 00-00 00-00 00-00  
RAIN C C S  
RAIN SHWRS S S S C C S  
SNOW L L S  
SPRINKLES C C  
WIND CHILL 32 30 29 31 31 29 26 33 25 20 16  
MIN CHILL 31 29 29 31 26 30 23 16  
 
DATE 04/19 TUE 04/20/21 WED 04/21/21 THU 04/22/21 FRI 04/23/21  
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 37 21 38 23 46 28 55 34 54  
TEMP 35 36 26 23 36 38 27 25 43 45 33 30 51 52 41 35 49 49  
DEWPT 20 20 19 18 21 22 20 19 24 26 25 24 32 35 34 32 34 32  
PWIND DIR N NW NW NW W SW SW SW NW  
WIND CHAR BZ GN GN GN BZ GN BZ GN BZ  
AVG CLOUDS B2 B2 B1 SC B1 B1 SC FW FW SC FW FW FW SC B1 SC B1 B1  
POP 12HR 10 0 20 0 0 0 5 10 5  
RAIN SHWRS S  
SNOW S  
SNOWSHWRS S  
 

 
SDZ050-171000-  
BURKE-GREGORY SD  
43.18N 99.29W ELEV. 2142 FT  
256 PM CDT FRI APR 16 2021  
 
DATE 04/16/21 SAT 04/17/21 SUN 04/18/21 MON  
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 34 49 30 63 28  
TEMP 41 41 38 37 36 35 37 43 46 47 39 35 33 32 45 56 63 58 46 39 34 30  
DEWPT 35 35 35 35 35 34 34 35 32 30 29 29 27 27 30 29 29 31 33 32 28 25  
RH 79 79 89 92 96 96 89 73 58 51 67 78 78 81 55 35 27 36 60 76 78 81  
WIND DIR N N N N N NW N NW NW NW W SW W W W W NW NW N N N N  
WIND SPD 13 11 10 9 10 9 12 12 13 10 5 8 8 10 12 14 16 12 13 17 17 17  
WIND GUST 27 27  
CLOUDS OV OV OV OV OV OV OV B2 B1 SC FW CL CL FW FW FW SC SC B2 B2 B2 B2  
POP 12HR 50 20 0 0 50  
QPF 12HR 0.03 0.02 0 0 0.05  
SNOW 12HR 00-00 00-00 00-00  
RAIN S S C  
RAIN SHWRS L C C C C S S S  
SNOW S C C  
WIND CHILL 33 34 31 30 29 28 29 28 26 23 30 23 19  
MIN CHILL 31 30 27 27 28 23 29 30 18  
 
DATE 04/19 TUE 04/20/21 WED 04/21/21 THU 04/22/21 FRI 04/23/21  
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 39 23 41 24 50 31 58 34 57  
TEMP 35 37 28 25 38 40 29 26 45 49 36 33 54 55 43 36 50 52  
DEWPT 20 18 20 19 18 18 20 19 21 21 23 26 32 34 34 31 32 30  
PWIND DIR N NW NW W W SW S SW NW  
WIND CHAR BZ GN BZ GN GN GN BZ GN BZ  
AVG CLOUDS OV B2 B1 B1 B1 B1 SC FW FW FW FW FW SC SC SC SC SC SC  
POP 12HR 40 5 5 0 0 0 10 10 5  
RAIN S  
SNOW C  
 

 
SDZ057-171000-  
CHAMBERLAIN-BRULE SD  
43.77N 99.32W ELEV. 1565 FT  
256 PM CDT FRI APR 16 2021  
 
DATE 04/16/21 SAT 04/17/21 SUN 04/18/21 MON  
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 33 52 30 65 28  
TEMP 43 42 39 38 37 35 39 46 50 50 41 36 33 32 46 58 64 58 44 37 33 30  
DEWPT 35 36 37 36 36 35 35 34 32 30 30 29 28 28 31 31 30 33 35 31 28 24  
RH 73 79 92 92 96100 85 63 50 46 65 75 82 85 55 36 28 39 70 79 82 78  
WIND DIR N N N N N NW N NW NW NW SW SW SW SW W W W NW N N N N  
WIND SPD 10 10 6 6 6 6 10 11 11 9 4 6 6 6 10 13 13 12 13 16 14 13  
WIND GUST 25 26 26 25  
CLOUDS OV OV OV OV OV OV B2 B2 SC FW FW FW FW FW FW SC SC B1 B2 B2 OV B2  
POP 12HR 40 20 0 0 60  
QPF 12HR 0.02 0.01 0 0 0.08  
SNOW 12HR 00-00 00-00 00-00  
RAIN C C L  
RAIN SHWRS C C C S S S S  
SNOW C L S  
SPRINKLES C  
WIND CHILL 34 33 31 29 32 31 28 26 28 23 19  
MIN CHILL 32 28 30 30 25 30 27 19  
 
DATE 04/19 TUE 04/20/21 WED 04/21/21 THU 04/22/21 FRI 04/23/21  
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 41 23 43 24 51 30 61 34 59  
TEMP 38 39 28 25 40 41 30 26 47 50 36 32 56 57 43 36 52 53  
DEWPT 19 17 21 21 20 19 21 20 22 22 24 27 32 33 34 32 32 28  
PWIND DIR N NW NW NW W S S SW N  
WIND CHAR BZ GN BZ LT GN GN GN GN GN  
AVG CLOUDS B2 B2 B1 B1 SC B1 SC FW FW FW FW FW FW SC SC SC SC SC  
POP 12HR 20 0 20 0 0 0 5 10 5  
RAIN SHWRS S  
SNOW S  
 

 
SDZ038-171000-  
HURON-BEADLE SD  
44.38N 98.22W ELEV. 1282 FT  
256 PM CDT FRI APR 16 2021  
 
DATE 04/16/21 SAT 04/17/21 SUN 04/18/21 MON  
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 33 54 30 64 27  
TEMP 44 43 40 38 36 35 40 47 52 51 42 37 33 31 47 58 63 55 41 35 31 28  
DEWPT 35 36 36 35 35 33 34 32 31 29 30 29 28 26 30 30 31 33 34 29 26 21  
RH 70 76 85 89 96 92 79 56 44 42 62 72 82 81 51 34 30 43 76 78 81 75  
WIND DIR N N N N N N N N NW NW W SW SW SW SW W W N N N N N  
WIND SPD 13 11 9 9 9 9 11 11 10 9 5 5 5 5 9 11 12 13 17 14 16 14  
WIND GUST 31 27 27 25  
CLOUDS OV OV OV OV OV OV B2 B1 SC SC FW FW FW FW SC SC B1 B2 B2 B2 B2 B2  
POP 12HR 30 10 0 5 60  
QPF 12HR 0 0 0 0 0.09  
SNOW 12HR 00-00 00-00 00-00  
FLURRIES C C  
RAIN C C S  
RAIN SHWRS S C S S S  
SNOW L L  
SPRINKLES C C C  
WIND CHILL 34 32 29 28 33 32 28 25 32 25 20 16  
MIN CHILL 34 32 28 29 32 24 30 25 16  
 
DATE 04/19 TUE 04/20/21 WED 04/21/21 THU 04/22/21 FRI 04/23/21  
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 42 22 43 23 51 28 60 34 58  
TEMP 38 39 27 23 40 41 28 25 47 50 35 30 56 56 42 35 52 53  
DEWPT 19 17 19 18 21 20 20 18 23 24 24 24 33 35 34 30 31 28  
PWIND DIR N NW NW NW W SW S SW N  
WIND CHAR BZ GN GN GN GN GN GN GN GN  
AVG CLOUDS B2 B2 B1 SC B1 B1 SC FW FW FW FW FW FW SC SC SC SC SC  
POP 12HR 10 0 20 0 0 0 5 10 5  
RAIN SHWRS S  
 

 
SDZ059-171000-  
MITCHELL-DAVISON SD  
43.76N 98.02W ELEV. 1312 FT  
256 PM CDT FRI APR 16 2021  
 
DATE 04/16/21 SAT 04/17/21 SUN 04/18/21 MON  
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 35 53 31 65 29  
TEMP 44 44 41 39 38 36 41 47 51 51 42 37 34 32 47 58 64 58 45 38 34 30  
DEWPT 36 37 37 36 36 34 35 34 32 30 31 30 29 27 30 29 30 32 33 30 27 24  
RH 73 76 85 89 92 92 79 60 48 44 65 75 82 81 51 33 28 37 62 73 75 78  
WIND DIR N N N N N N N NW NW NW W W SW SW SW W W W N N N N  
WIND SPD 12 11 10 9 9 9 12 12 12 9 5 6 5 8 10 13 13 10 14 16 17 17  
WIND GUST 26 28 28 27  
CLOUDS OV OV OV OV OV B2 OV B2 B1 FW FW FW FW FW FW SC SC SC B2 B2 OV OV  
POP 12HR 50 20 0 5 60  
QPF 12HR 0.02 0 0 0 0.10  
SNOW 12HR 00-00 00-00 00-00  
RAIN C C L  
RAIN SHWRS C C C C C S  
SNOW C L S  
SPRINKLES C C  
WIND CHILL 33 32 29 34 32 28 25 29 23 19  
MIN CHILL 33 29 30 32 25 30 29 18  
 
DATE 04/19 TUE 04/20/21 WED 04/21/21 THU 04/22/21 FRI 04/23/21  
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 42 23 44 25 52 31 60 36 59  
TEMP 39 40 29 25 41 42 30 26 48 51 37 33 56 56 44 37 54 54  
DEWPT 19 17 19 18 19 20 20 18 23 24 23 24 32 34 34 32 32 29  
PWIND DIR N NW NW NW W SW S SW N  
WIND CHAR BZ GN BZ GN GN GN BZ GN BZ  
AVG CLOUDS B2 B2 B1 B1 B1 B1 SC FW FW FW FW FW FW B1 SC SC SC SC  
POP 12HR 20 5 20 0 0 0 10 10 10  
RAIN SHWRS S  
SNOW S  
 

 
SDZ062-171000-  
SIOUX FALLS-MINNEHAHA SD  
43.57N 96.73W ELEV. 1424 FT  
256 PM CDT FRI APR 16 2021  
 
DATE 04/16/21 SAT 04/17/21 SUN 04/18/21 MON  
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 36 52 31 63 30  
TEMP 46 45 43 41 39 37 41 47 50 50 42 38 35 33 46 55 62 57 46 39 35 31  
DEWPT 37 37 37 35 35 34 35 35 35 33 32 31 29 28 31 29 30 31 33 31 28 25  
RH 71 73 79 79 85 89 79 63 56 52 67 76 78 82 55 37 30 37 60 73 75 78  
WIND DIR N N N N N N N N NW NW NW NW W W W W W W N N N N  
WIND SPD 9 9 8 10 9 9 11 11 11 10 5 4 4 5 10 13 13 10 9 13 13 14  
WIND GUST 20 19 27 26 26  
CLOUDS OV OV OV OV OV OV B2 B2 B2 B1 SC SC FW FW FW SC SC SC B2 B2 B2 B2  
POP 12HR 30 30 0 0 60  
QPF 12HR 0.01 0.01 0 0 0.07  
SNOW 12HR 00-00 00-00 00-00  
RAIN S S L S  
RAIN SHWRS S S S S C C S S  
SNOW C L C  
WIND CHILL 32 31 34 31 28 31 25 21  
MIN CHILL 33 30 29 32 27 30 29 20  
 
DATE 04/19 TUE 04/20/21 WED 04/21/21 THU 04/22/21 FRI 04/23/21  
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 41 24 42 25 49 31 58 37 58  
TEMP 38 39 29 25 39 41 29 26 46 49 36 32 54 55 43 38 52 53  
DEWPT 21 18 18 18 19 20 20 19 22 23 23 24 31 33 34 34 34 31  
PWIND DIR N N NW NW W SW S S NW  
WIND CHAR BZ GN GN LT GN LT GN GN GN  
AVG CLOUDS B2 B2 B1 B1 B1 B1 SC FW FW SC FW FW FW B1 B1 B1 B1 B1  
POP 12HR 30 0 20 0 0 0 10 10 10  
RAIN SHWRS S  
SNOW C  
 

 
SDZ070-171000-  
VERMILLION-CLAY SD  
42.95N 96.92W ELEV. 1132 FT  
256 PM CDT FRI APR 16 2021  
 
DATE 04/16/21 SAT 04/17/21 SUN 04/18/21 MON  
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 38 53 31 65 32  
TEMP 45 45 44 42 40 39 43 49 52 51 44 39 34 32 47 58 64 60 49 42 38 34  
DEWPT 36 37 37 37 36 35 36 36 35 33 33 32 30 29 32 29 28 31 31 31 30 27  
RH 70 73 76 82 85 85 76 61 52 50 65 76 85 88 56 33 25 33 50 65 73 75  
WIND DIR N N NW NW N NW N NW NW NW NW W W W W W W W SW NW N N  
WIND SPD 9 10 8 8 9 9 12 13 13 12 5 5 5 5 10 12 13 11 6 11 12 16  
CLOUDS OV OV OV OV OV OV B2 B2 B2 B1 SC SC FW FW FW SC SC SC SC B1 B2 OV  
POP 12HR 40 30 0 0 20  
QPF 12HR 0.01 0.02 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN S S C  
RAIN SHWRS C S S C C C S S S  
SNOW S C  
SPRINKLES C  
WIND CHILL 34 32 34 29 27 30 24  
MIN CHILL 31 32 33 26 31 22  
 
DATE 04/19 TUE 04/20/21 WED 04/21/21 THU 04/22/21 FRI 04/23/21  
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 44 25 45 25 53 31 60 38 61  
TEMP 40 42 31 26 42 44 30 27 48 51 37 33 56 56 45 40 56 56  
DEWPT 23 19 19 19 20 20 21 20 22 22 24 26 32 34 35 35 36 32  
PWIND DIR N NW NW NW W SW S S NW  
WIND CHAR BZ GN BZ GN GN GN BZ GN BZ  
AVG CLOUDS OV B2 B2 B1 B1 B1 SC FW FW FW FW FW SC B1 B1 B1 B1 SC  
POP 12HR 50 5 10 0 0 0 20 10 10  
RAIN C S  
RAIN SHWRS S S  
SNOW C  
 

 
SDZ069-171000-  
YANKTON-YANKTON SD  
42.95N 97.39W ELEV. 1207 FT  
256 PM CDT FRI APR 16 2021  
 
DATE 04/16/21 SAT 04/17/21 SUN 04/18/21 MON  
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 37 53 30 64 31  
TEMP 44 44 42 41 39 37 41 47 52 50 43 38 34 32 45 57 63 60 49 42 37 32  
DEWPT 37 38 38 37 36 35 36 36 34 33 33 31 30 29 32 30 30 32 32 32 29 27  
RH 76 79 86 85 89 92 82 65 50 52 67 76 85 88 60 35 29 35 52 67 72 81  
WIND DIR N N N NW N NW N N NW NW NW W W W W W W W W N N N  
WIND SPD 10 12 10 10 10 11 12 13 13 12 5 6 5 8 11 13 13 10 9 12 13 17  
WIND GUST 25 24  
CLOUDS OV OV OV OV OV OV B2 B2 B2 B1 SC FW FW FW FW SC SC SC SC B2 B2 OV  
POP 12HR 40 30 0 0 40  
QPF 12HR 0.03 0.02 0 0 0.01  
SNOW 12HR 00-00 00-00 00-00  
RAIN C S  
RAIN SHWRS C S C C C C S S  
SNOW C C  
WIND CHILL 32 29 34 33 29 25 28 21  
MIN CHILL 33 29 29 32 24 29 33 20  
 
DATE 04/19 TUE 04/20/21 WED 04/21/21 THU 04/22/21 FRI 04/23/21  
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 43 25 45 25 52 31 60 37 60  
TEMP 39 41 30 26 41 43 30 27 47 51 37 33 56 56 44 39 54 55  
DEWPT 22 19 20 20 20 20 21 20 23 23 25 26 33 35 35 35 36 32  
PWIND DIR N NW NW NW W SW S SW NW  
WIND CHAR BZ GN BZ GN GN GN BZ GN BZ  
AVG CLOUDS OV B2 B2 B1 B1 B1 SC FW FW FW FW FW SC B1 B1 B1 B1 SC  
POP 12HR 50 5 10 0 0 0 10 10 10  
RAIN C  
SNOW C  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab SD Page
The Nexlab IA Page
The Nexlab MN Page
The Nexlab NE Page Main Text Page