Rousseau, SD Weather Forecast & Current Conditions

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Rousseau Weather Map
UTC Time: 9/17/2026, 13:47
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Rousseau, SD Regional Weather

Expires:202609171400;;601846
ASUS43 KFSD 171310
RWRSD 

WEATHER ROUNDUP FOR SOUTH DAKOTA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
800 AM CDT THU SEP 17 2026

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



SDZ012>016-024>037-041>051-057-063-072>074-171400-
SOUTHWEST AND SOUTH CENTRAL SOUTH DAKOTA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
RAPID CTY ARPT MOCLDY    56  44  64 W5        30.27R TC  13           
PIERRE         FOG       50  50 100 NE3       30.26R VSB 1/2 TC  10   
CUSTER         PTCLDY    52  44  74 NE6       30.35S TC  11           
ELLSWORTH AFB  MOCLDY    57  46  66 SW3       30.23S HAZE    TC  14   
SPEARFISH      MOCLDY    50  45  81 SW3       30.28S TC  10           
WINNER         LGT RAIN  53  53 100 CALM      30.29R VSB 1/4 TC  12   
$$
 

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

Rousseau, SD

Today
Mostly Cloudy
72°/ 58° 22°/ 14°
100%
Friday
Rain Showers
72°/ 55° 22°/ 13°
90%
Saturday
Mostly Cloudy
68°/ 52° 20°/ 11°
20%
Sun-Sun Night
Rain Showers
65°18°
70%
Monday
Rain Showers
65°/ 48° 18°/
30%
Tue Night
Rain Showers
52°11°
40%
Wednesday
Rain Showers
75°24°
20%

Day: Partly sunny this morning, then becoming mostly cloudy. Areas of dense fog this morning. Highs in the lower 70s. East winds 10 to 15 mph with gusts up to 25 mph.

Night: A slight chance of thunderstorms. Showers. Patchy fog after midnight. Locally heavy rainfall possible after midnight. Breezy with lows in the upper 50s. East winds 15 to 25 mph. Chance of rain near 100 percent.

Fort Pierre, SD

Today
Rain Showers
72°/ 58° 22°/ 14°
100%
Friday
Rain Showers
72°/ 52° 22°/ 11°
70%
Saturday
Mostly Cloudy
68°/ 52° 20°/ 11°
40%
Sunday
Rain Showers
65°/ 50° 18°/ 10°
80%
Monday
Rain Showers
68°/ 48° 20°/
50%
Tue Night
Rain Showers
52°11°
40%
Wednesday
Thunderstorms
78°26°
20%

Day: Mostly cloudy. Areas of dense fog this morning. A slight chance of showers this afternoon. Highs in the lower 70s. East winds 5 to 10 mph with gusts up to 20 mph, increasing to 15 to 20 mph with gusts up to 30 mph this afternoon. Chance of rain 20 percent.

Night: Showers with a slight chance of thunderstorms. Patchy fog after midnight. Lows in the upper 50s. East winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent.

Onida, SD

Today
Mostly Cloudy
72°/ 55° 22°/ 13°
100%
Friday
Rain Showers
68°/ 52° 20°/ 11°
70%
Saturday
Mostly Cloudy
68°/ 52° 20°/ 11°
20%
Sun-Sun Night
Rain Showers
62°17°
70%
Monday
Rain Showers
65°/ 48° 18°/
30%
Tue Night
Rain Showers
52°11°
30%
Wednesday
Rain Showers
75°24°
20%

Day: Partly sunny this morning, then becoming mostly cloudy. Areas of dense fog this morning. Highs in the lower 70s. East winds 5 to 10 mph, increasing to around 15 mph this afternoon.

Night: Showers likely in the evening, then showers with a slight chance of thunderstorms after midnight. Patchy fog after midnight. Lows in the mid 50s. East winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent.

Kennebec, SD

Today
Rain Showers
72°/ 58° 22°/ 14°
100%
Friday
Rain Showers
75°/ 55° 24°/ 13°
50%
Saturday
Mostly Cloudy
68°/ 52° 20°/ 11°
20%
Sunday
Rain Showers
65°/ 52° 18°/ 11°
80%
Monday
Rain Showers
65°/ 50° 18°/ 10°
40%
Tuesday
Mostly Cloudy
70°/ 52° 21°/ 11°
40%
Wednesday
Thunderstorms
75°24°
20%

Day: Mostly cloudy. Areas of dense fog this morning. A slight chance of showers this afternoon. Highs in the lower 70s. East winds 10 to 15 mph. Gusts up to 30 mph this afternoon. Chance of rain 20 percent.

Night: Showers with a chance of thunderstorms. Patchy fog after midnight. Locally heavy rainfall possible. Breezy with lows in the upper 50s. East winds 15 to 25 mph. Chance of rain near 100 percent.

Highmore, SD

Today
Partly Cloudy
72°/ 58° 22°/ 14°
100%
Friday
Rain Showers
70°/ 52° 21°/ 11°
100%
Saturday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Sun-Sun Night
Rain Showers
62°17°
70%
Monday
Rain Showers
62°/ 48° 17°/
40%
Tue Night
Rain Showers
52°11°
40%
Wednesday
Rain Showers
72°22°
20%

Day: Areas of dense fog this morning. Partly sunny. Highs in the lower 70s. Northeast winds 5 to 10 mph, becoming east around 15 mph this afternoon.

Night: Showers likely in the evening, then showers with a slight chance of thunderstorms after midnight. Patchy fog after midnight. Locally heavy rainfall possible after midnight. Breezy with lows in the upper 50s. East winds 10 to 15 mph, increasing to 15 to 25 mph after midnight. Chance of rain near 100 percent.

Murdo, SD

Today
Rain Showers
72°/ 58° 22°/ 14°
100%
Friday
Rain Showers
72°/ 55° 22°/ 13°
70%
Saturday
Mostly Cloudy
68°/ 52° 20°/ 11°
50%
Sunday
Thunderstorms
65°/ 50° 18°/ 10°
90%
Monday
Rain Showers
68°/ 48° 20°/
50%
Tue Night
Thunderstorms
52°11°
40%
Wednesday
Rain Showers
78°26°
40%

Day: Mostly cloudy. Areas of dense fog this morning. A chance of showers this afternoon. Highs in the lower 70s. East winds 5 to 10 mph with gusts up to 20 mph, increasing to 15 to 20 mph with gusts up to 30 mph this afternoon. Chance of rain 40 percent.

Night: A chance of thunderstorms. Showers. Patchy fog after midnight. Locally heavy rainfall possible in the evening. Breezy with lows in the upper 50s. East winds 15 to 25 mph. Chance of rain near 100 percent.

Fort Thompson, SD

Today
Partly Cloudy
72°/ 58° 22°/ 14°
100%
Friday
Thunderstorms
72°/ 55° 22°/ 13°
70%
Saturday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Sun-Sun Night
Rain Showers
62°17°
70%
Monday
Rain Showers
62°/ 48° 17°/
30%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
40%
Wednesday
Thunderstorms
72°22°
20%

Day: Areas of dense fog this morning. Partly sunny. Highs in the lower 70s. East winds 5 to 10 mph.

Night: Showers. A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight. Patchy fog after midnight. Locally heavy rainfall possible. Lows in the upper 50s. East winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent.

Gettysburg, SD

Today
Mostly Cloudy
70°/ 55° 21°/ 13°
100%
Friday
Rain Showers
68°/ 52° 20°/ 11°
90%
Saturday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Sun-Sun Night
Rain Showers
62°17°
70%
Monday
Rain Showers
65°/ 48° 18°/
50%
Tue Night-Wed
Rain Showers
52°11°
20%

Day: Partly sunny this morning, then becoming mostly cloudy. Areas of dense fog this morning. Highs around 70. East winds 5 to 10 mph, increasing to around 15 mph this afternoon.

Night: A chance of showers in the evening, then showers after midnight. Lows in the mid 50s. East winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent.

Miller, SD

Today
Partly Cloudy
72°/ 58° 22°/ 14°
100%
Friday
Thunderstorms
72°/ 52° 22°/ 11°
100%
Saturday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Sun-Sun Night
Rain Showers
65°18°
70%
Monday
Rain Showers
62°/ 48° 17°/
40%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
40%
Wednesday
Rain Showers
72°22°
20%

Day: Areas of dense fog this morning. Partly sunny. Highs in the lower 70s. Northeast winds 5 to 10 mph, becoming east 10 to 15 mph this afternoon.

Night: Showers likely in the evening, then showers with a slight chance of thunderstorms after midnight. Patchy fog after midnight. Locally heavy rainfall possible after midnight. Lows in the upper 50s. East winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent.

Chamberlain, SD

Today
Mostly Cloudy
72°/ 60° 22°/ 16°
100%
Friday
Thunderstorms
75°/ 55° 24°/ 13°
50%
Saturday
Mostly Cloudy
65°/ 52° 18°/ 11°
20%
Sunday
Rain Showers
62°/ 50° 17°/ 10°
70%
Monday
Rain Showers
62°/ 48° 17°/
50%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
40%
Wednesday
Rain Showers
72°22°
40%

Day: Mostly cloudy this morning, then becoming mostly sunny. Areas of dense fog this morning. Highs in the lower 70s. East winds 10 to 15 mph.

Night: A chance of thunderstorms. Showers. Locally heavy rainfall possible. Breezy with lows around 60. East winds 10 to 15 mph with gusts up to 25 mph, increasing to 15 to 25 mph with gusts up to 35 mph after midnight. Chance of rain near 100 percent.

Faulkton, SD

Today
Partly Cloudy
72°/ 55° 22°/ 13°
100%
Friday
Rain Showers
68°/ 52° 20°/ 11°
100%
Saturday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Sunday
Rain Showers
65°/ 50° 18°/ 10°
70%
Monday
Rain Showers
62°/ 48° 17°/
40%
Tuesday
Mostly Cloudy
68°/ 50° 20°/ 10°
20%
Wednesday
Rain Showers
72°22°
30%

Day: Patchy dense fog this morning. Partly sunny. Highs in the lower 70s. Northeast winds 5 to 10 mph, becoming east 10 to 15 mph with gusts up to 25 mph this afternoon.

Night: A chance of showers in the evening, then showers with a slight chance of thunderstorms after midnight. Patchy fog after midnight. Lows in the mid 50s. East winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent.

Isabel, SD

Today
Mostly Cloudy
72°/ 55° 22°/ 13°
100%
Friday
Rain Showers
68°/ 52° 20°/ 11°
70%
Saturday
Mostly Cloudy
68°/ 52° 20°/ 11°
50%
Sun-Sun Night
Rain Showers
65°18°
70%
Monday
Rain Showers
68°/ 48° 20°/
50%
Tue Night-Wed
Rain Showers
52°11°
20%

Day: Partly sunny this morning, then becoming mostly cloudy. Areas of dense fog this morning. Highs in the lower 70s. East winds 10 to 15 mph with gusts up to 25 mph.

Night: A chance of showers in the evening, then showers after midnight. Patchy fog after midnight. Lows in the mid 50s. East winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent.

Huron, SD

Today
Mostly Cloudy
75°/ 58° 24°/ 14°
100%
Friday
Thunderstorms
75°/ 55° 24°/ 13°
100%
Saturday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Sunday
Rain Showers
65°/ 50° 18°/ 10°
70%
Monday
Rain Showers
62°/ 48° 17°/
50%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Wednesday
Rain Showers
72°22°
30%

Day: Mostly cloudy this morning, then becoming partly sunny. Highs in the mid 70s. East winds 5 to 10 mph with gusts up to 20 mph.

Night: A slight chance of showers in the evening, then showers with a chance of thunderstorms after midnight. Locally heavy rainfall possible. Lows in the upper 50s. East winds around 10 mph with gusts up to 20 mph, increasing to 15 to 20 mph with gusts up to 30 mph after midnight. Chance of rain near 100 percent.

Mobridge, SD

Today
Mostly Cloudy
70°/ 55° 21°/ 13°
70%
Friday
Rain Showers
68°/ 52° 20°/ 11°
50%
Saturday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Sun-Sun Night
Rain Showers
65°18°
60%
Monday
Rain Showers
65°/ 48° 18°/
20%
Tue Night-Wed
Rain Showers
50°10°
20%

Day: Partly sunny this morning, then becoming mostly cloudy. Areas of dense fog this morning. Highs around 70. East winds 10 to 15 mph with gusts up to 25 mph.

Night: Cloudy. A chance of showers in the evening, then showers likely after midnight. Breezy with lows in the mid 50s. East winds 15 to 25 mph. Chance of rain 70 percent.

Gregory, SD

Today
Mostly Cloudy
75°/ 62° 24°/ 17°
90%
Friday
Rain Showers
78°/ 58° 26°/ 14°
40%
Saturday
Mostly Cloudy
68°/ 55° 20°/ 13°
40%
Sunday
Rain Showers
62°/ 52° 17°/ 11°
70%
Monday
Rain Showers
65°/ 50° 18°/ 10°
50%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
40%
Wednesday
Rain Showers
72°22°
40%

Day: Mostly cloudy this morning, then becoming partly sunny. Areas of dense fog this morning. Warmer with highs in the mid 70s. East winds 10 to 15 mph.

Night: A chance of thunderstorms. Showers, breezy with lows in the lower 60s. East winds 15 to 25 mph with gusts up to 35 mph. Chance of rain 90 percent.

Wessington Springs, SD

Today
Mostly Cloudy
72°/ 58° 22°/ 14°
100%
Friday
Thunderstorms
75°/ 55° 24°/ 13°
70%
Saturday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Sunday
Rain Showers
62°/ 52° 17°/ 11°
70%
Monday
Rain Showers
62°/ 48° 17°/
50%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
30%
Wednesday
Rain Showers
72°22°
30%

Day: Mostly cloudy this morning, then becoming partly sunny. Patchy fog this morning. Highs in the lower 70s. Northeast winds 5 to 10 mph, becoming east with gusts up to 20 mph this afternoon.

Night: A chance of showers with a slight chance of thunderstorms in the evening, then showers with a chance of thunderstorms after midnight. Locally heavy rainfall possible. Lows in the upper 50s. East winds 15 to 20 mph. Chance of rain near 100 percent.

Wagner, SD

Today
Mostly Cloudy
75°/ 62° 24°/ 17°
90%
Friday
Thunderstorms
82°/ 58° 28°/ 14°
50%
Saturday
Mostly Cloudy
68°/ 55° 20°/ 13°
20%
Sunday
Rain Showers
65°/ 52° 18°/ 11°
70%
Monday
Rain Showers
65°/ 50° 18°/ 10°
50%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
40%
Wednesday
Rain Showers
72°22°
40%

Day: Mostly cloudy this morning, then becoming partly sunny. Patchy dense fog this morning. Highs in the mid 70s. Northeast winds 5 to 10 mph, becoming east 10 to 15 mph this afternoon.

Night: A chance of thunderstorms. A chance of showers in the evening, then showers after midnight. Humid with lows in the lower 60s. East winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 90 percent.

Plankinton, SD

Today
Mostly Cloudy
72°/ 60° 22°/ 16°
100%
Friday
Thunderstorms
78°/ 58° 26°/ 14°
50%
Saturday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Sunday
Rain Showers
62°/ 52° 17°/ 11°
60%
Monday
Rain Showers
62°/ 48° 17°/
50%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
30%
Wednesday
Rain Showers
72°22°
30%

Day: Mostly cloudy this morning, then becoming partly sunny. Patchy fog this morning. Highs in the lower 70s. Northeast winds 5 to 10 mph, becoming east with gusts up to 20 mph this afternoon.

Night: A chance of thunderstorms. Showers. Locally heavy rainfall possible. Lows around 60. East winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent.

Ipswich, SD

Today
Partly Cloudy
70°/ 55° 21°/ 13°
90%
Friday
Rain Showers
65°/ 52° 18°/ 11°
90%
Saturday
Mostly Cloudy
65°/ 50° 18°/ 10°
0%
Sunday
Rain Showers
65°/ 48° 18°/
60%
Mon-Mon Night
Rain Showers
62°17°
20%
Tuesday
Mostly Cloudy
68°/ 50° 20°/ 10°
20%
Wednesday
Rain Showers
72°22°
20%

Day: Areas of dense fog this morning. Partly sunny. Highs around 70. Northeast winds 10 to 15 mph.

Night: Cloudy. A chance of showers in the evening, then showers after midnight. Lows in the mid 50s. East winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 90 percent.

Redfield, SD

Today
Partly Cloudy
75°/ 58° 24°/ 14°
100%
Friday
Rain Showers
70°/ 52° 21°/ 11°
100%
Saturday
Mostly Cloudy
68°/ 50° 20°/ 10°
0%
Sunday
Rain Showers
65°/ 48° 18°/
70%
Monday
Rain Showers
62°/ 48° 17°/
40%
Tue Night-Wed
Rain Showers
50°10°
20%

Day: Partly sunny. Highs in the mid 70s. Northeast winds around 5 mph, becoming east this afternoon.

Night: A chance of showers in the evening, then showers with a slight chance of thunderstorms after midnight. Patchy fog after midnight. Lows in the upper 50s. East winds 15 to 20 mph. Chance of rain near 100 percent.

Names listed above may include county names.

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