Mortimer Slough, SD Weather Forecast & Current Conditions

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Mortimer Slough, SD Weather Maps

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Mortimer Slough Weather Map
UTC Time: 9/25/2026, 05:53
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Mortimer Slough, SD Regional Weather

Expires:202609250600;;013415
ASUS43 KFSD 250510
RWRFSD

WEATHER ROUNDUP FOR SE SOUTH DAKOTA/SW MINNESOTA/NW IOWA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1200 AM CDT FRI SEP 25 2026

NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
SIGNIFICANT WEATHER AND OR OBSTRUCTIONS TO VISIBILITY.



SDZ038>040-050-052>070-250600-
SOUTHEAST SOUTH DAKOTA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
BROOKINGS      CLOUDY    59  58  96 S9        30.22R FOG     TC  15   
CHAMBERLAIN    PTCLDY    59  59 100 CALM      30.18S FOG     TC  15   
HURON          CLOUDY    62  60  93 S9        30.16R TC  17           
MADISON        CLOUDY    59  59 100 S13       30.21R FOG     TC  15   
MITCHELL       CLOUDY    63  60  90 S10       30.18R TC  17           
SIOUX FALLS    CLOUDY    60  58  92 S12       30.22R TC  16           
WINNER         PTCLDY    59  58  96 SW5       30.17R TC  15           
YANKTON        CLOUDY    61  59  94 SE8       30.22R TC  16           
$$


SKY/WX - Weather  TMP - Temperature  DP - Dew Point  RH - Humidity
WIND - Wind Direction/Speed PRES - Barometric Pressure VSB - Visibility
WCI - Wind Chill Index E13G22 Wind - East Wind 13 mph/Gusts of 22 mph

Mortimer Slough, SD

Overnight
Rain Showers
58°14°
40%
Friday
Drizzle
62°/ 58° 17°/ 14°
90%
Saturday
Thunderstorms
62°/ 58° 17°/ 14°
100%
Sunday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Monday
Mostly Cloudy
68°/ 58° 20°/ 14°
70%
Tuesday
Rain Showers
62°/ 50° 17°/ 10°
70%
Wednesday
Sunny
62°/ 50° 17°/ 10°
0%
Thursday
Partly Cloudy
62°17°
0%

Night: Cloudy. A chance of showers with areas of drizzle late this evening, then patchy drizzle. Patchy fog. Near steady temperature in the upper 50s. South winds 5 to 10 mph. Chance of rain 40 percent.

Hayti, SD

Tonight
Rain Showers
58°14°
20%
Friday
Mostly Cloudy
65°/ 58° 18°/ 14°
90%
Saturday
Rain Showers
65°/ 58° 18°/ 14°
70%
Sun-Sun Night
Mostly Cloudy
72°22°
0%
Monday
Rain Showers
68°/ 58° 20°/ 14°
80%
Tuesday
Rain Showers
58°/ 48° 14°/ 9°
60%
Wednesday
Rain Showers
60°/ 48° 16°/ 9°
20%
Thursday
Rain Showers
60°16°
20%

Night: A slight chance of showers late this evening. Cloudy with a slight chance of drizzle. Patchy fog late this evening. Areas of fog. Near steady temperature in the upper 50s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20 percent.

De Smet, SD

Overnight
Rain Showers
58°14°
30%
Friday
Rain Showers
62°/ 58° 17°/ 14°
90%
Saturday
Rain Showers
65°/ 58° 18°/ 14°
70%
Sunday
Mostly Cloudy
70°/ 58° 21°/ 14°
0%
Monday
Mostly Cloudy
68°/ 58° 20°/ 14°
80%
Tuesday
Rain Showers
65°/ 50° 18°/ 10°
50%
Wednesday
Sunny
65°/ 50° 18°/ 10°
0%
Thursday
Sunny
62°17°
0%

Night: A chance of showers late this evening. Cloudy with patchy drizzle. Patchy fog. Near steady temperature in the upper 50s. South winds 5 to 10 mph. Chance of rain 30 percent.

Clear Lake, SD

Tonight
Drizzle
58°14°
0%
Friday
Mostly Cloudy
65°/ 58° 18°/ 14°
90%
Saturday
Rain Showers
65°/ 58° 18°/ 14°
80%
Sun-Sun Night
Mostly Cloudy
70°21°
0%
Monday
Rain Showers
68°/ 58° 20°/ 14°
80%
Tuesday
Rain Showers
58°/ 48° 14°/ 9°
70%
Wednesday
Rain Showers
58°/ 50° 14°/ 10°
20%
Thursday
Rain Showers
58°14°
20%

Night: Cloudy with a slight chance of drizzle. Patchy fog. Near steady temperature in the upper 50s. South winds 10 to 15 mph with gusts up to 25 mph.

Madison, SD

Overnight
Drizzle
58°14°
0%
Friday
Rain Showers
60°/ 58° 16°/ 14°
90%
Saturday
Thunderstorms
65°/ 58° 18°/ 14°
100%
Sunday
Mostly Cloudy
70°/ 58° 21°/ 14°
0%
Monday
Mostly Cloudy
68°/ 58° 20°/ 14°
70%
Tuesday
Rain Showers
65°/ 50° 18°/ 10°
50%
Wednesday
Sunny
65°/ 52° 18°/ 11°
0%
Thursday
Partly Cloudy
62°17°
0%

Night: Cloudy with areas of drizzle. Patchy fog. Near steady temperature in the upper 50s. South winds 5 to 10 mph.

Watertown, SD

Tonight
Drizzle
58°14°
0%
Friday
Mostly Cloudy
65°/ 58° 18°/ 14°
90%
Saturday
Thunderstorms
65°/ 58° 18°/ 14°
70%
Sun-Sun Night
Mostly Cloudy
72°22°
0%
Monday
Rain Showers
70°/ 58° 21°/ 14°
80%
Tuesday
Rain Showers
58°/ 48° 14°/ 9°
60%
Wednesday
Rain Showers
60°/ 50° 16°/ 10°
20%
Thursday
Rain Showers
58°14°
20%

Night: Cloudy with a slight chance of drizzle. Areas of fog. Near steady temperature in the upper 50s. South winds 5 to 10 mph with gusts up to 20 mph.

Tyler, MN

Overnight
Drizzle
58°14°
0%
Friday
Drizzle
62°/ 58° 17°/ 14°
80%
Saturday
Thunderstorms
62°/ 58° 17°/ 14°
100%
Sunday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Monday
Mostly Cloudy
68°/ 58° 20°/ 14°
60%
Tuesday
Rain Showers
62°/ 52° 17°/ 11°
60%
Wednesday
Sunny
62°/ 52° 17°/ 11°
0%
Thursday
Sunny
62°17°
0%

Night: Cloudy with areas of drizzle. Patchy fog. Near steady temperature in the upper 50s. South winds 5 to 10 mph.

Clark, SD

Tonight
Rain Showers
60°16°
20%
Friday
Cloudy
65°/ 58° 18°/ 14°
90%
Saturday
Rain Showers
68°/ 58° 20°/ 14°
50%
Sun-Sun Night
Mostly Cloudy
72°22°
0%
Monday
Thunderstorms
70°/ 58° 21°/ 14°
80%
Tuesday
Rain Showers
58°/ 48° 14°/ 9°
50%
Wednesday
Rain Showers
62°/ 48° 17°/ 9°
20%
Thursday
Rain Showers
60°16°
20%

Night: A slight chance of showers late this evening. Cloudy with a slight chance of drizzle. Patchy fog. Near steady temperature around 60. South winds 5 to 10 mph. Chance of rain 20 percent.

Flandreau, SD

Overnight
Drizzle
58°14°
0%
Friday
Rain Showers
62°/ 58° 17°/ 14°
90%
Saturday
Thunderstorms
62°/ 58° 17°/ 14°
100%
Sunday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Monday
Mostly Cloudy
68°/ 58° 20°/ 14°
70%
Tuesday
Rain Showers
65°/ 50° 18°/ 10°
70%
Wednesday
Sunny
65°/ 52° 18°/ 11°
0%
Thursday
Partly Cloudy
62°17°
0%

Night: Cloudy with areas of drizzle. Patchy fog. Near steady temperature in the upper 50s. South winds 5 to 10 mph.

Granite Falls, MN

Tonight
Drizzle
58°14°
0%
Friday
Cloudy
65°/ 58° 18°/ 14°
70%
Saturday
Rain Showers
65°/ 62° 18°/ 17°
90%
Sunday
Partly Cloudy
70°/ 58° 21°/ 14°
0%
Monday
Mostly Cloudy
70°/ 58° 21°/ 14°
70%
Tuesday
Rain Showers
62°/ 52° 17°/ 11°
70%
Wednesday
Sunny
62°/ 52° 17°/ 11°
0%
Thursday
Sunny
62°17°
0%

Night: Cloudy. Patchy fog. Patchy drizzle. Near steady temperature in the upper 50s. Southeast winds 5 to 10 mph.

Milbank, SD

Tonight
Drizzle
58°14°
0%
Friday
Mostly Cloudy
65°/ 58° 18°/ 14°
90%
Saturday
Rain Showers
65°/ 58° 18°/ 14°
70%
Sun-Sun Night
Mostly Cloudy
72°22°
0%
Monday
Rain Showers
70°/ 58° 21°/ 14°
80%
Tuesday
Rain Showers
60°/ 48° 16°/ 9°
70%
Wednesday
Rain Showers
62°/ 50° 17°/ 10°
20%
Thursday
Rain Showers
60°16°
20%

Night: Cloudy with a slight chance of drizzle. Patchy fog. Near steady temperature in the upper 50s. South winds 5 to 10 mph.

Howard, SD

Overnight
Rain Showers
60°16°
20%
Friday
Rain Showers
62°/ 58° 17°/ 14°
90%
Saturday
Rain Showers
68°/ 58° 20°/ 14°
70%
Sunday
Mostly Cloudy
72°/ 58° 22°/ 14°
0%
Monday
Mostly Cloudy
72°/ 58° 22°/ 14°
80%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
50%
Wednesday
Sunny
65°/ 52° 18°/ 11°
0%
Thursday
Sunny
65°18°
0%

Night: A slight chance of showers late this evening. Cloudy with patchy drizzle. Patchy fog. Near steady temperature around 60. Southeast winds around 10 mph. Chance of rain 20 percent.

Sioux Falls, SD

Overnight
Drizzle
58°14°
0%
Friday
Rain Showers
60°/ 58° 16°/ 14°
90%
Saturday
Thunderstorms
65°/ 58° 18°/ 14°
100%
Sunday
Mostly Cloudy
70°/ 58° 21°/ 14°
0%
Monday
Mostly Cloudy
68°/ 58° 20°/ 14°
70%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
70%
Wednesday
Rain Showers
65°/ 52° 18°/ 11°
30%
Thursday
Partly Cloudy
65°18°
0%

Night: Cloudy with patchy drizzle. Patchy fog. Near steady temperature in the upper 50s. South winds 10 to 15 mph.

Pipestone, MN

Overnight
Rain Showers
58°14°
40%
Friday
Rain Showers
62°/ 58° 17°/ 14°
90%
Saturday
Thunderstorms
62°/ 60° 17°/ 16°
100%
Sunday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Monday
Mostly Cloudy
68°/ 58° 20°/ 14°
60%
Tuesday
Rain Showers
62°/ 52° 17°/ 11°
70%
Wednesday
Rain Showers
62°/ 52° 17°/ 11°
30%
Thursday
Partly Cloudy
62°17°
0%

Night: Cloudy. Areas of drizzle with a chance of showers late this evening, then patchy drizzle. Patchy fog. Near steady temperature in the upper 50s. South winds 5 to 10 mph. Chance of rain 40 percent.

Marshall, MN

Overnight
Rain Showers
58°14°
40%
Friday
Drizzle
65°/ 58° 18°/ 14°
70%
Saturday
Thunderstorms
62°/ 60° 17°/ 16°
100%
Sunday
Mostly Cloudy
68°/ 58° 20°/ 14°
0%
Monday
Mostly Cloudy
68°/ 58° 20°/ 14°
50%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
70%
Wednesday
Sunny
65°/ 52° 18°/ 11°
30%
Thursday
Sunny
62°17°
0%

Night: A chance of showers late this evening. Cloudy with areas of drizzle. Patchy fog. Near steady temperature in the upper 50s. South winds 5 to 10 mph. Chance of rain 40 percent.

Madison, MN

Tonight
Drizzle
58°14°
0%
Friday
Cloudy
68°/ 58° 20°/ 14°
70%
Saturday
Rain Showers
65°/ 58° 18°/ 14°
80%
Sunday
Partly Cloudy
72°/ 58° 22°/ 14°
0%
Monday
Mostly Cloudy
72°/ 58° 22°/ 14°
70%
Tuesday
Rain Showers
62°/ 48° 17°/ 9°
70%
Wednesday
Sunny
62°/ 50° 17°/ 10°
0%
Thursday
Sunny
62°17°
0%

Night: Cloudy. Patchy fog. Patchy drizzle. Near steady temperature in the upper 50s. Southeast winds 5 to 10 mph.

Huron, SD

Overnight
Cloudy
62°17°
0%
Friday
Rain Showers
65°/ 60° 18°/ 16°
90%
Saturday
Rain Showers
68°/ 58° 20°/ 14°
50%
Sunday
Mostly Cloudy
72°/ 58° 22°/ 14°
0%
Monday
Rain Showers
72°/ 58° 22°/ 14°
80%
Tuesday
Rain Showers
65°/ 50° 18°/ 10°
50%
Wednesday
Sunny
68°/ 52° 20°/ 11°
0%
Thursday
Sunny
65°18°
0%

Night: Cloudy. Patchy fog. Near steady temperature in the lower 60s. Southeast winds 5 to 10 mph.

Salem, SD

Overnight
Drizzle
60°16°
0%
Friday
Rain Showers
60°/ 58° 16°/ 14°
90%
Saturday
Thunderstorms
65°/ 58° 18°/ 14°
70%
Sunday
Mostly Cloudy
72°/ 58° 22°/ 14°
0%
Monday
Mostly Cloudy
70°/ 58° 21°/ 14°
70%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
50%
Wednesday
Sunny
65°/ 52° 18°/ 11°
0%
Thursday
Partly Cloudy
65°18°
0%

Night: Cloudy with patchy drizzle. Patchy fog. Near steady temperature around 60. Southeast winds around 10 mph.

Redfield, SD

Tonight
Rain Showers
58°14°
20%
Friday
Drizzle
68°/ 58° 20°/ 14°
70%
Saturday
Rain Showers
70°/ 58° 21°/ 14°
40%
Sunday
Mostly Cloudy
72°/ 58° 22°/ 14°
20%
Monday
Thunderstorms
72°/ 55° 22°/ 13°
80%
Tuesday
Thunderstorms
65°/ 48° 18°/ 9°
50%
Wednesday
Partly Cloudy
62°/ 48° 17°/ 9°
0%
Thursday
Partly Cloudy
62°17°
0%

Night: Cloudy. A slight chance of showers and drizzle late this evening. Patchy fog. Lows in the upper 50s. Southeast winds 5 to 10 mph. Chance of rain 20 percent.

Woonsocket, SD

Overnight
Cloudy
58°14°
0%
Friday
Rain Showers
65°/ 60° 18°/ 16°
90%
Saturday
Rain Showers
68°/ 58° 20°/ 14°
50%
Sunday
Mostly Cloudy
72°/ 58° 22°/ 14°
0%
Monday
Mostly Cloudy
72°/ 58° 22°/ 14°
80%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
50%
Wednesday
Sunny
68°/ 52° 20°/ 11°
0%
Thursday
Sunny
65°18°
0%

Night: Cloudy. Patchy fog. Near steady temperature in the upper 50s. Southeast winds 5 to 10 mph.

Names listed above may include county names.

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