Flat Lake, SD Weather Forecast & Current Conditions

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Flat Lake Weather Map
UTC Time: 10/31/2026, 11:47
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Flat Lake, SD Regional Weather

Expires:202610311200;;019859
ASUS43 KFSD 311110
RWRSD 

WEATHER ROUNDUP FOR SOUTH DAKOTA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
600 AM CDT SAT OCT 31 2026

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



SDZ004>011-016>023-039-040-311200-
NORTHEAST SOUTH DAKOTA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ABERDEEN       CLOUDY    49  49 100 E7        30.11F FOG     TC   9   
WATERTOWN      CLOUDY    48  47  96 E6        30.13S TC   9           
BROOKINGS      TSTM      51  50  96 E8        30.13F TC  11           
SISSETON         N/A     48  47  96 SE10      30.16S TC   9           
$$
 

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

Flat Lake, SD

Today
Rain
58°/ 52° 14°/ 11°
50%
Sunday
Rain
62°/ 52° 17°/ 11°
60%
Monday
Rain
55°/ 42° 13°/ 6°
100%
Tuesday
Rain
45°/ 40° 7°/ 4°
70%
Wed-Wed Night
Rain
48°9°
20%
Thursday
Mostly Cloudy
45°7°
0%
Friday
Mostly Cloudy
45°7°
0%

Day: Cloudy. A chance of rain this morning. Highs in the upper 50s. Southeast winds 5 to 10 mph with gusts up to 25 mph. Chance of rain 50 percent.

Night: Mostly cloudy. Lows in the lower 50s. South winds 10 to 15 mph with gusts up to 25 mph.

Gwinner, ND

Today
Rain
55°/ 45° 13°/ 7°
40%
Sunday
Rain
65°/ 50° 18°/ 10°
60%
Monday
Rain
55°/ 40° 13°/ 4°
100%
Tuesday
Rain
45°/ 35° 7°/ 2°
N/A
Wed-Wed Night
Rain
45°7°
N/A
Thursday
Mostly Cloudy
45°7°
0%
Friday
Mostly Cloudy
45°7°
0%

Day: Cloudy with a slight chance of drizzle. A chance of light rain, mainly this morning. Patchy fog this afternoon. Highs in the mid 50s. Southeast winds 5 to 15 mph. Chance of rain 40 percent.

Night: Mostly cloudy with a slight chance of drizzle. Patchy fog. Lows 45 to 50. Southeast winds 5 to 15 mph.

Sisseton, SD

Today
Rain
58°/ 50° 14°/ 10°
50%
Sunday
Rain
62°/ 52° 17°/ 11°
50%
Monday
Rain
55°/ 42° 13°/ 6°
100%
Tuesday
Thunderstorms
45°/ 38° 7°/ 3°
70%
Wednesday
Rain
50°/ 35° 10°/ 2°
30%
Thursday
Mostly Cloudy
48°9°
0%
Friday
Mostly Cloudy
48°9°
0%

Day: Cloudy. A chance of rain this morning. Patchy fog this morning. Highs in the upper 50s. Southeast winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50 percent.

Night: Mostly cloudy. A slight chance of rain after midnight. Lows around 50. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20 percent.

Webster, SD

Today
Rain
58°/ 52° 14°/ 11°
50%
Sunday
Rain
60°/ 52° 16°/ 11°
70%
Monday
Thunderstorms
55°/ 42° 13°/ 6°
100%
Tuesday
Rain
45°/ 42° 7°/ 6°
70%
Wednesday
Rain
48°/ 35° 9°/ 2°
20%
Thu Night
Mostly Cloudy
35°2°
0%
Friday
Partly Cloudy
45°7°
0%

Day: Mostly cloudy. A chance of rain this morning. Highs in the upper 50s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent.

Night: Mostly cloudy. A chance of rain after midnight. Lows in the lower 50s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent.

Wahpeton, ND

Today
Rain
55°/ 45° 13°/ 7°
40%
Sunday
Rain
65°/ 50° 18°/ 10°
50%
Monday
Rain
55°/ 40° 13°/ 4°
100%
Tuesday
Rain
45°/ 35° 7°/ 2°
N/A
Wednesday
Rain
45°/ 35° 7°/ 2°
N/A
Thursday
Mostly Cloudy
45°7°
0%
Friday
Mostly Cloudy
45°7°
0%

Day: Cloudy with a slight chance of drizzle. A chance of light rain, mainly this morning. Highs in the mid 50s. Southeast winds 5 to 15 mph. Chance of rain 40 percent.

Night: Mostly cloudy with a slight chance of drizzle. Patchy fog. Lows 45 to 50. Southeast winds 5 to 15 mph.

Wheaton, MN

Today
Rain
58°/ 50° 14°/ 10°
50%
Sunday
Rain
62°/ 52° 17°/ 11°
50%
Monday
Rain
58°/ 45° 14°/ 7°
100%
Tuesday
Thunderstorms
48°/ 38° 9°/ 3°
70%
Wednesday
Rain
50°/ 35° 10°/ 2°
30%
Thursday
Mostly Cloudy
48°9°
0%
Friday
Mostly Cloudy
48°9°
0%

Day: Cloudy. A chance of rain, mainly this morning. Highs in the upper 50s. Southeast winds around 10 mph with gusts up to 20 mph. Chance of rain 50 percent.

Night: Mostly cloudy. A slight chance of rain after midnight. Lows around 50. Southeast winds 5 to 10 mph. Chance of rain 20 percent.

Aberdeen, SD

Today
Rain
60°/ 52° 16°/ 11°
50%
Sunday
Rain
62°/ 52° 17°/ 11°
70%
Monday
Rain
55°/ 42° 13°/ 6°
100%
Tuesday
Rain
45°/ 35° 7°/ 2°
70%
Wednesday
Rain
48°/ 32° 9°/ 0°
20%
Thursday
Mostly Cloudy
32°0°
0%
Friday
Mostly Cloudy
32°0°
0%

Day: Cloudy. A chance of rain this morning. Highs around 60. Southeast winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50 percent.

Night: Cloudy. A slight chance of rain after midnight. Lows in the lower 50s. Southeast winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20 percent.

Ortonville, MN

Today
Rain
58°/ 50° 14°/ 10°
70%
Sunday
Rain
62°/ 52° 17°/ 11°
50%
Monday
Rain
58°/ 45° 14°/ 7°
100%
Tuesday
Thunderstorms
48°/ 38° 9°/ 3°
70%
Wednesday
Rain
50°/ 35° 10°/ 2°
30%
Thursday
Mostly Cloudy
48°9°
0%
Friday
Mostly Cloudy
48°9°
0%

Day: Cloudy. Rain likely this morning. Highs in the upper 50s. Southeast winds 5 to 10 mph. Chance of rain 70 percent.

Night: Mostly cloudy. A slight chance of rain after midnight. Lows around 50. Southeast winds 5 to 10 mph. Chance of rain 20 percent.

Ellendale, ND

Today
Rain Showers
58°/ 50° 14°/ 10°
40%
Sunday
Rain Showers
62°/ 52° 17°/ 11°
20%
Monday
Rain Showers
55°/ 42° 13°/ 6°
N/A
Tuesday
Rain Showers
48°/ 32° 9°/ 0°
50%
Wednesday
Partly Cloudy
50°/ 32° 10°/ 0°
0%
Thursday
Partly Cloudy
45°/ 30° 7°/ -1°
0%
Friday
Partly Cloudy
48°9°
0%

Day: Cloudy. A chance of showers early in the morning, then a slight chance of showers in the afternoon. Areas of fog early in the morning, then patchy fog in the afternoon. Highs in the upper 50s. East winds 5 to 10 mph. Chance of rain 40 percent.

Night: Cloudy. Patchy fog. Lows around 50. Southeast winds 5 to 10 mph.

Lisbon, ND

Today
Rain
55°/ 45° 13°/ 7°
30%
Sunday
Rain
65°/ 50° 18°/ 10°
50%
Monday
Rain
55°/ 40° 13°/ 4°
100%
Tuesday
Rain
45°/ 35° 7°/ 2°
N/A
Wed-Wed Night
Rain
45°7°
N/A
Thursday
Mostly Cloudy
45°7°
0%
Friday
Mostly Cloudy
45°7°
0%

Day: Cloudy. A chance of drizzle and a slight chance of light rain this morning, then a chance of light rain this afternoon. Patchy fog. Highs in the mid 50s. Southeast winds 5 to 15 mph. Chance of rain 30 percent.

Night: Cloudy. A chance of drizzle, mainly in the evening. Patchy fog. Lows 45 to 50. Southeast winds 5 to 15 mph.

Milbank, SD

Today
Rain
58°/ 52° 14°/ 11°
70%
Sunday
Rain
62°/ 52° 17°/ 11°
70%
Monday
Thunderstorms
58°/ 45° 14°/ 7°
100%
Tuesday
Thunderstorms
48°/ 38° 9°/ 3°
70%
Wednesday
Rain
48°/ 38° 9°/ 3°
20%
Thursday
Mostly Cloudy
48°9°
0%
Friday
Mostly Cloudy
48°9°
0%

Day: Mostly cloudy. Rain likely this morning. Patchy fog this morning. Highs in the upper 50s. Southeast winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 70 percent.

Night: Mostly cloudy. A slight chance of rain after midnight. Lows in the lower 50s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20 percent.

Breckenridge, MN

Today
Rain
55°/ 50° 13°/ 10°
40%
Sunday
Drizzle
65°/ 50° 18°/ 10°
40%
Monday
Rain
55°/ 45° 13°/ 7°
100%
Tuesday
Rain
45°/ 35° 7°/ 2°
N/A
Wednesday
Rain
45°/ 35° 7°/ 2°
N/A
Thursday
Mostly Cloudy
45°7°
0%
Friday
Mostly Cloudy
45°7°
0%

Day: Cloudy. A chance of light rain and a slight chance of drizzle this morning, then a chance of drizzle and a slight chance of light rain this afternoon. Highs in the mid 50s. Southeast winds 5 to 15 mph. Chance of rain 40 percent.

Night: A slight chance of light rain in the evening. Cloudy with a slight chance of drizzle. Patchy fog. Lows 50 to 55. Southeast winds 5 to 15 mph. Chance of rain 20 percent.

Watertown, SD

Today
Rain
60°/ 52° 16°/ 11°
50%
Sunday
Rain
60°/ 52° 16°/ 11°
70%
Monday
Thunderstorms
55°/ 45° 13°/ 7°
100%
Tuesday
Thunderstorms
45°/ 42° 7°/ 6°
70%
Wednesday
Rain
48°/ 35° 9°/ 2°
20%
Thu Night
Mostly Cloudy
35°2°
0%
Friday
Partly Cloudy
48°9°
0%

Day: Mostly cloudy. A chance of rain this morning. Patchy fog. Highs around 60. Southeast winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50 percent.

Night: Mostly cloudy. A chance of rain after midnight. Lows in the lower 50s. South winds around 10 mph with gusts up to 20 mph. Chance of rain 40 percent.

Clark, SD

Today
Rain
60°/ 52° 16°/ 11°
50%
Sunday
Rain
60°/ 52° 16°/ 11°
90%
Monday
Thunderstorms
58°/ 42° 14°/ 6°
100%
Tuesday
Thunderstorms
45°/ 35° 7°/ 2°
70%
Wednesday
Rain
48°/ 35° 9°/ 2°
20%
Thu Night
Cloudy
35°2°
0%
Friday
Partly Cloudy
48°9°
0%

Day: Mostly cloudy. A chance of rain this morning. Patchy fog this morning. Highs around 60. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent.

Night: Cloudy. A chance of rain after midnight. Lows in the lower 50s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent.

Edgeley, ND

Today
Rain Showers
55°/ 50° 13°/ 10°
30%
Sunday
Rain Showers
62°/ 52° 17°/ 11°
60%
Monday
Rain Showers
55°/ 40° 13°/ 4°
N/A
Tuesday
Rain Showers
45°/ 32° 7°/ 0°
50%
Wednesday
Rain Showers
48°/ 32° 9°/ 0°
20%
Thursday
Partly Cloudy
45°/ 30° 7°/ -1°
0%
Friday
Partly Cloudy
48°9°
0%

Day: Cloudy. A slight chance of showers late, then a chance of showers. Patchy fog late, then areas of fog in the morning. Patchy fog in the afternoon. Highs in the mid 50s. East winds 5 to 10 mph. Chance of rain 30 percent.

Night: Cloudy. A slight chance of showers in the evening. Patchy fog. Lows around 50. Southeast winds 5 to 10 mph.

Redfield, SD

Today
Rain
62°/ 52° 17°/ 11°
50%
Sunday
Rain
62°/ 52° 17°/ 11°
90%
Monday
Thunderstorms
58°/ 42° 14°/ 6°
100%
Tuesday
Rain
48°/ 35° 9°/ 2°
70%
Wednesday
Rain
50°/ 32° 10°/ 0°
20%
Thursday
Partly Cloudy
48°/ 32° 9°/ 0°
0%
Friday
Partly Cloudy
48°9°
0%

Day: Cloudy. A chance of rain this morning. Patchy fog this morning. Highs in the lower 60s. Southeast winds 5 to 10 mph with gusts up to 25 mph. Chance of rain 50 percent.

Night: Cloudy. A chance of rain after midnight. Lows in the lower 50s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent.

Elbow Lake, MN

Today
Rain
55°/ 50° 13°/ 10°
50%
Sunday
Drizzle
60°/ 50° 16°/ 10°
40%
Monday
Rain
55°/ 45° 13°/ 7°
100%
Tuesday
Thunderstorms
50°/ 35° 10°/ 2°
N/A
Wednesday
Rain
45°/ 45° 7°/ 7°
N/A
Thursday
Mostly Cloudy
45°7°
0%
Friday
Mostly Cloudy
45°7°
0%

Day: Cloudy. A chance of light rain this morning, then a slight chance of light rain and drizzle this afternoon. Highs in the mid 50s. Southeast winds 5 to 15 mph. Chance of rain 50 percent.

Night: Mostly cloudy with a slight chance of drizzle. Patchy fog. Lows 50 to 55. Southeast winds 5 to 15 mph.

Fargo, ND

Today
Rain
55°/ 45° 13°/ 7°
30%
Sunday
Rain
65°/ 50° 18°/ 10°
50%
Monday
Rain
55°/ 40° 13°/ 4°
100%
Tuesday
Rain
45°/ 35° 7°/ 2°
N/A
Wed-Wed Night
Rain
45°7°
N/A
Thursday
Mostly Cloudy
45°7°
0%
Friday
Mostly Cloudy
45°7°
0%

Day: Cloudy. A slight chance of light rain and drizzle this morning, then a chance of light rain this afternoon. Patchy fog this afternoon. Highs in the mid 50s. Southeast winds 5 to 15 mph. Chance of rain 30 percent.

Night: Cloudy. A chance of drizzle and a slight chance of light rain in the evening, then a slight chance of drizzle after midnight. Patchy fog. Lows in the mid 40s. Southeast winds up to 10 mph. Chance of rain 20 percent.

Morris, MN

Today
Rain Showers
58°/ 52° 14°/ 11°
50%
Sunday
Cloudy
62°/ 52° 17°/ 11°
50%
Monday
Rain
58°/ 45° 14°/ 7°
100%
Tuesday
Rain Showers
48°/ 38° 9°/ 3°
70%
Wednesday
Rain
50°/ 38° 10°/ 3°
40%
Thursday
Mostly Cloudy
48°/ 35° 9°/ 2°
0%
Friday
Partly Cloudy
48°9°
0%

Day: Cloudy. Chance of rain showers early in the morning, then slight chance of rain showers early in the afternoon. Highs in the upper 50s. Southeast winds 5 to 15 mph. Chance of showers 50 percent.

Night: Cloudy. A 20 percent chance of rain showers after midnight. Lows in the lower 50s. Southeast winds 5 to 10 mph.

Valley City, ND

Today
Rain
50°/ 45° 10°/ 7°
40%
Sunday
Rain
60°/ 50° 16°/ 10°
50%
Monday
Rain
55°/ 35° 13°/ 2°
100%
Tuesday
Rain
45°/ 35° 7°/ 2°
N/A
Wednesday
Rain
45°/ 45° 7°/ 7°
N/A
Thursday
Mostly Cloudy
45°7°
0%
Friday
Mostly Cloudy
45°7°
0%

Day: Cloudy. A slight chance of light rain and drizzle this morning, then a chance of light rain this afternoon. Patchy fog. Highs 50 to 55. East winds 5 to 15 mph. Chance of rain 40 percent.

Night: Cloudy. A slight chance of light rain and drizzle in the evening, then a slight chance of drizzle after midnight. Patchy fog. Lows in the mid 40s. Southeast winds 5 to 15 mph. Chance of rain 20 percent.

Names listed above may include county names.

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