Oak Lake, SD Weather Forecast & Current Conditions

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Oak Lake Weather Map
UTC Time: 9/26/2026, 16:43
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Oak Lake, SD Regional Weather

Expires:202609261700;;091838
ASUS43 KFSD 261610
RWRSD 

WEATHER ROUNDUP FOR SOUTH DAKOTA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1100 AM CDT SAT SEP 26 2026

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



SDZ017-020-022-023-036>040-048>070-261700-
SOUTHEAST SOUTH DAKOTA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
SIOUX FALLS    LGT RAIN  63  62  97 S9        29.98S FOG     TC  17   
HURON          CLOUDY    64  61  90 S13G22    29.92S TC  18           
CHAMBERLAIN    CLOUDY    65  64  97 SE9       29.94R TC  19           
MADISON        CLOUDY    63  63 100 S15       29.97S TC  17           
MITCHELL       CLOUDY    64  62  93 S12       29.94R TC  18           
YANKTON        CLOUDY    65  63  93 SE12      29.97S TC  18           
$$
 
ABBREVIATIONS USED IN REMARKS
   TC - TEMPERATURE IN CELSIUS
  WCI - WIND CHILL INDEX
   HX - HEAT INDEX
  VSB - VISIBILITY

  

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

Oak Lake, SD

Today
Rain Showers
65°/ 58° 18°/ 14°
100%
Sunday
Mostly Cloudy
70°/ 55° 21°/ 13°
0%
Monday
Mostly Cloudy
68°/ 58° 20°/ 14°
70%
Tuesday
Rain Showers
68°/ 52° 20°/ 11°
70%
Wednesday
Partly Cloudy
68°/ 52° 20°/ 11°
0%
Thursday
Partly Cloudy
62°/ 48° 17°/ 9°
0%
Friday
Sunny
62°17°
0%

Day: Widespread drizzle and showers this morning, then areas of drizzle with a slight chance of showers this afternoon. Highs in the mid 60s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent.

Night: Cloudy. A slight chance of showers in the evening. Areas of fog after midnight. Lows in the upper 50s. Southeast winds 5 to 10 mph. Chance of rain 20 percent.

Clear Lake, SD

Today
Rain Showers
65°/ 58° 18°/ 14°
70%
Sunday
Mostly Cloudy
70°/ 55° 21°/ 13°
0%
Monday
Mostly Cloudy
70°/ 58° 21°/ 14°
70%
Tuesday
Thunderstorms
68°/ 52° 20°/ 11°
70%
Wed Night
Rain Showers
52°11°
20%
Thursday
Rain Showers
65°/ 48° 18°/ 9°
20%

Day: Cloudy. Showers likely late this morning, then a chance of sprinkles this afternoon. Patchy fog. Highs in the mid 60s. South winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 70 percent.

Night: Mostly cloudy. A chance of sprinkles in the evening. Patchy fog in the evening, then areas of fog after midnight. Lows in the upper 50s. South winds 5 to 10 mph, becoming southwest after midnight.

Tyler, MN

Today
Rain Showers
65°/ 58° 18°/ 14°
100%
Sunday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Monday
Mostly Cloudy
68°/ 58° 20°/ 14°
70%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
80%
Wednesday
Partly Cloudy
68°/ 52° 20°/ 11°
0%
Thursday
Partly Cloudy
62°/ 48° 17°/ 9°
0%
Friday
Sunny
62°17°
0%

Day: Widespread drizzle and showers this morning, then areas of drizzle with a slight chance of showers this afternoon. Highs in the mid 60s. South winds 10 to 15 mph with gusts up to 30 mph. Chance of rain near 100 percent.

Night: Cloudy. A slight chance of showers in the evening. Patchy fog after midnight. Lows in the upper 50s. South winds 5 to 10 mph. Chance of rain 20 percent.

Hayti, SD

Today
Rain Showers
68°/ 58° 20°/ 14°
50%
Sunday
Mostly Cloudy
72°/ 55° 22°/ 13°
0%
Monday
Mostly Cloudy
70°/ 58° 21°/ 14°
70%
Tuesday
Thunderstorms
68°/ 52° 20°/ 11°
70%
Wednesday
Partly Cloudy
68°/ 52° 20°/ 11°
20%
Thursday
Cloudy
65°18°
0%
Friday
Cloudy
65°18°
0%

Day: Cloudy. A chance of showers late this morning, then a chance of sprinkles this afternoon. Patchy fog. Highs in the upper 60s. South winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 50 percent.

Night: Cloudy. A chance of sprinkles in the evening. Patchy fog in the evening, then areas of fog after midnight. Lows in the upper 50s. Southeast winds 5 to 10 mph.

Granite Falls, MN

Today
Rain Showers
65°/ 58° 18°/ 14°
100%
Sunday
Partly Cloudy
72°/ 55° 22°/ 13°
0%
Monday
Mostly Cloudy
72°/ 58° 22°/ 14°
50%
Tuesday
Rain Showers
68°/ 55° 20°/ 13°
70%
Wednesday
Partly Cloudy
68°/ 52° 20°/ 11°
0%
Thursday
Partly Cloudy
65°/ 48° 18°/ 9°
0%
Friday
Sunny
65°18°
0%

Day: Rain showers in the morning, then slight chance of rain showers in the afternoon. Highs in the mid 60s. Southeast winds 10 to 15 mph. Chance of showers near 100 percent.

Night: Mostly cloudy. A 20 percent chance of rain showers after midnight. Lows in the upper 50s. Southeast winds up to 10 mph.

Marshall, MN

Today
Rain Showers
65°/ 58° 18°/ 14°
100%
Sunday
Mostly Cloudy
72°/ 55° 22°/ 13°
0%
Monday
Mostly Cloudy
72°/ 58° 22°/ 14°
70%
Tuesday
Rain Showers
68°/ 55° 20°/ 13°
80%
Wednesday
Partly Cloudy
68°/ 55° 20°/ 13°
0%
Thursday
Partly Cloudy
65°/ 50° 18°/ 10°
0%
Friday
Sunny
65°18°
0%

Day: Showers with widespread drizzle this morning, then a chance of showers with areas of drizzle this afternoon. Highs in the mid 60s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain near 100 percent.

Night: Cloudy with a 20 percent chance of showers. Patchy fog after midnight. Lows in the upper 50s. Southeast winds 5 to 10 mph.

Flandreau, SD

Today
Rain Showers
65°/ 58° 18°/ 14°
100%
Sunday
Cloudy
70°/ 55° 21°/ 13°
0%
Monday
Mostly Cloudy
68°/ 58° 20°/ 14°
80%
Tuesday
Rain Showers
68°/ 52° 20°/ 11°
80%
Wednesday
Partly Cloudy
68°/ 52° 20°/ 11°
0%
Thursday
Partly Cloudy
65°/ 48° 18°/ 9°
0%
Friday
Sunny
62°17°
0%

Day: Widespread drizzle and showers this morning, then areas of drizzle with a slight chance of showers this afternoon. Highs in the mid 60s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent.

Night: Cloudy. A chance of showers, mainly in the evening. Patchy fog after midnight. Lows in the upper 50s. Southeast winds 5 to 10 mph. Chance of rain 30 percent.

Pipestone, MN

Today
Rain Showers
62°/ 62° 17°/ 17°
100%
Sunday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Monday
Mostly Cloudy
68°/ 58° 20°/ 14°
80%
Tuesday
Rain Showers
65°/ 55° 18°/ 13°
80%
Wednesday
Partly Cloudy
68°/ 52° 20°/ 11°
0%
Thursday
Partly Cloudy
62°/ 48° 17°/ 9°
0%
Friday
Sunny
62°17°
0%

Day: Showers with widespread drizzle this morning, then areas of drizzle with a slight chance of showers this afternoon. Near steady temperature in the lower 60s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain near 100 percent.

Night: Cloudy. A chance of showers, mainly in the evening. Patchy fog after midnight. Near steady temperature in the lower 60s. Southeast winds 5 to 10 mph. Chance of rain 30 percent.

Watertown, SD

Today
Rain Showers
68°/ 58° 20°/ 14°
50%
Sunday
Mostly Cloudy
72°/ 55° 22°/ 13°
0%
Monday
Rain Showers
70°/ 58° 21°/ 14°
90%
Tuesday
Thunderstorms
68°/ 52° 20°/ 11°
70%
Wednesday
Partly Cloudy
68°/ 52° 20°/ 11°
20%
Thursday
Cloudy
65°18°
0%
Friday
Cloudy
65°18°
0%

Day: Cloudy. A chance of showers late this morning, then a chance of sprinkles this afternoon. Patchy fog. Highs in the upper 60s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent.

Night: Cloudy. A chance of showers in the evening, then a chance of sprinkles after midnight. Patchy fog in the evening, then areas of fog after midnight. Lows in the upper 50s. South winds 5 to 10 mph, becoming southwest after midnight. Chance of rain 20 percent.

De Smet, SD

Today
Rain Showers
65°/ 58° 18°/ 14°
20%
Sunday
Mostly Cloudy
72°/ 58° 22°/ 14°
0%
Monday
Mostly Cloudy
68°/ 58° 20°/ 14°
80%
Tuesday
Rain Showers
68°/ 52° 20°/ 11°
70%
Wednesday
Sunny
68°/ 52° 20°/ 11°
0%
Thursday
Sunny
62°/ 48° 17°/ 9°
0%
Friday
Sunny
62°17°
0%

Day: Cloudy. Drizzle this morning, then a slight chance of showers with patchy drizzle this afternoon. Highs in the mid 60s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.

Night: Cloudy. A slight chance of showers in the evening. Areas of fog after midnight. Lows in the upper 50s. Southeast winds 5 to 10 mph. Chance of rain 20 percent.

Madison, SD

Today
Rain Showers
65°/ 58° 18°/ 14°
20%
Sunday
Mostly Cloudy
70°/ 58° 21°/ 14°
0%
Monday
Mostly Cloudy
68°/ 58° 20°/ 14°
80%
Tuesday
Rain Showers
68°/ 52° 20°/ 11°
70%
Wednesday
Partly Cloudy
68°/ 52° 20°/ 11°
0%
Thursday
Partly Cloudy
62°/ 48° 17°/ 9°
0%
Friday
Sunny
62°17°
0%

Day: Cloudy. Patchy fog this morning. Widespread drizzle this morning, then a slight chance of showers with patchy drizzle this afternoon. Highs in the mid 60s. Southeast winds 15 to 20 mph. Chance of rain 20 percent.

Night: Cloudy. A slight chance of showers in the evening. Patchy fog in the evening, then areas of fog after midnight. Lows in the upper 50s. Southeast winds 5 to 10 mph. Chance of rain 20 percent.

Milbank, SD

Today
Rain Showers
68°/ 58° 20°/ 14°
70%
Sunday
Partly Cloudy
72°/ 55° 22°/ 13°
0%
Monday
Rain Showers
72°/ 58° 22°/ 14°
70%
Tuesday
Thunderstorms
68°/ 52° 20°/ 11°
70%
Wednesday
Partly Cloudy
68°/ 52° 20°/ 11°
20%
Thu Night-Fri
Cloudy
48°9°
0%

Day: Cloudy. Showers likely late this morning, then a chance of sprinkles this afternoon. Patchy fog. Highs in the upper 60s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70 percent.

Night: Mostly cloudy. A chance of showers in the evening. Patchy fog in the evening, then areas of fog after midnight. Lows in the upper 50s. South winds 5 to 10 mph. Chance of rain 20 percent.

Madison, MN

Today
Rain Showers
68°/ 58° 20°/ 14°
100%
Sunday
Partly Cloudy
72°/ 55° 22°/ 13°
0%
Monday
Mostly Cloudy
72°/ 58° 22°/ 14°
70%
Tuesday
Rain Showers
68°/ 52° 20°/ 11°
70%
Wednesday
Partly Cloudy
70°/ 52° 21°/ 11°
0%
Thursday
Partly Cloudy
65°/ 48° 18°/ 9°
0%
Friday
Sunny
65°18°
0%

Day: Rain showers in the morning, then chance of rain showers early in the afternoon. Highs in the upper 60s. Southeast winds 10 to 15 mph. Chance of showers near 100 percent.

Night: Mostly cloudy. Lows in the upper 50s. Southeast winds up to 10 mph.

Slayton, MN

Today
Rain Showers
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°/ 55° 18°/ 13°
80%
Wednesday
Mostly Cloudy
68°/ 52° 20°/ 11°
30%
Thursday
Partly Cloudy
62°/ 48° 17°/ 9°
0%
Friday
Sunny
62°17°
0%

Day: Showers and drizzle this morning, then a chance of showers with areas of drizzle this afternoon. Highs in the lower 60s. Southeast winds 15 to 20 mph. Chance of rain near 100 percent.

Night: Cloudy with a 20 percent chance of showers. Patchy fog after midnight. Lows in the upper 50s. Southeast winds 5 to 10 mph.

Redwood Falls, MN

Today
Thunderstorms
65°/ 58° 18°/ 14°
100%
Sunday
Mostly Cloudy
72°/ 55° 22°/ 13°
0%
Monday
Mostly Cloudy
72°/ 58° 22°/ 14°
40%
Tuesday
Rain Showers
68°/ 55° 20°/ 13°
80%
Wednesday
Partly Cloudy
68°/ 52° 20°/ 11°
0%
Thursday
Partly Cloudy
65°/ 48° 18°/ 9°
0%
Friday
Sunny
65°18°
0%

Day: Rain showers in the morning. Slight chance of thunderstorms through the day. Chance of rain showers early in the afternoon. Highs in the mid 60s. Southeast winds 10 to 15 mph with gusts to around 30 mph. Chance of precipitation near 100 percent.

Night: Cloudy with a 20 percent chance of rain showers. Lows in the upper 50s. Southeast winds 5 to 15 mph.

Sioux Falls, SD

Today
Rain Showers
65°/ 62° 18°/ 17°
100%
Sunday
Mostly Cloudy
72°/ 58° 22°/ 14°
0%
Monday
Mostly Cloudy
70°/ 58° 21°/ 14°
80%
Tuesday
Rain Showers
68°/ 55° 20°/ 13°
90%
Wednesday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Thursday
Partly Cloudy
65°/ 52° 18°/ 11°
0%
Friday
Sunny
65°18°
0%

Day: Patchy fog this morning. Widespread drizzle and showers this morning, then a slight chance of showers with patchy drizzle this afternoon. Highs in the mid 60s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain near 100 percent.

Night: Cloudy. A chance of showers in the evening. Patchy fog after midnight. Near steady temperature in the lower 60s. Southeast winds 5 to 10 mph. Chance of rain 30 percent.

Clark, SD

Today
Rain Showers
68°/ 58° 20°/ 14°
40%
Sunday
Sprinkles
72°/ 55° 22°/ 13°
0%
Monday
Rain Showers
70°/ 58° 21°/ 14°
90%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
50%
Wednesday
Partly Cloudy
68°/ 52° 20°/ 11°
20%
Thursday
Cloudy
65°18°
0%
Friday
Cloudy
65°18°
0%

Day: Cloudy. A chance of showers late this morning. Patchy fog. Highs in the upper 60s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent.

Night: Mostly cloudy with a chance of sprinkles. Patchy fog in the evening. Areas of fog after midnight. Lows in the upper 50s. Southeast winds 5 to 10 mph.

Montevideo, MN

Today
Rain Showers
62°/ 58° 17°/ 14°
100%
Sunday
Partly Cloudy
72°/ 55° 22°/ 13°
0%
Monday
Mostly Cloudy
72°/ 58° 22°/ 14°
60%
Tuesday
Rain Showers
68°/ 52° 20°/ 11°
70%
Wednesday
Partly Cloudy
68°/ 52° 20°/ 11°
0%
Thursday
Partly Cloudy
65°/ 48° 18°/ 9°
0%
Friday
Sunny
65°18°
0%

Day: Rain showers in the morning, then chance of rain showers early in the afternoon. Slight chance of rain showers late in the afternoon. Highs in the lower 60s. Southeast winds 10 to 15 mph. Chance of showers near 100 percent.

Night: Cloudy with a 20 percent chance of rain showers. Lows in the upper 50s. Southeast winds 5 to 15 mph.

Ortonville, MN

Today
Rain Showers
65°/ 58° 18°/ 14°
90%
Sunday
Mostly Cloudy
72°/ 55° 22°/ 13°
0%
Monday
Rain Showers
72°/ 58° 22°/ 14°
70%
Tuesday
Thunderstorms
68°/ 52° 20°/ 11°
70%
Wednesday
Partly Cloudy
70°/ 52° 21°/ 11°
20%
Thu Night-Fri
Cloudy
48°9°
0%

Day: Cloudy. Showers late this morning, then a chance of showers this afternoon. Patchy fog. Highs in the mid 60s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 90 percent.

Night: Cloudy. A chance of showers in the evening, then a chance of sprinkles after midnight. Patchy fog in the evening, then areas of fog after midnight. Lows in the upper 50s. Southeast winds 5 to 10 mph. Chance of rain 20 percent.

Benson, MN

Today
Rain Showers
62°/ 55° 17°/ 13°
100%
Sunday
Partly Cloudy
72°/ 55° 22°/ 13°
0%
Monday
Mostly Cloudy
72°/ 58° 22°/ 14°
70%
Tuesday
Rain Showers
68°/ 52° 20°/ 11°
70%
Wednesday
Partly Cloudy
68°/ 52° 20°/ 11°
0%
Thursday
Partly Cloudy
65°/ 48° 18°/ 9°
0%
Friday
Sunny
65°18°
0%

Day: Rain showers in the morning, then chance of rain showers early in the afternoon. Slight chance of rain showers late in the afternoon. Highs in the lower 60s. Southeast winds 10 to 20 mph. Chance of showers near 100 percent.

Night: Cloudy. Chance of rain showers in the evening, then slight chance of rain showers after midnight. Lows in the mid 50s. Southeast winds 5 to 15 mph. Chance of showers 40 percent.

Names listed above may include county names.

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