Erwin, SD Weather Forecast & Current Conditions

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Erwin Weather Map
UTC Time: 9/22/2026, 08:17
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Erwin, SD Regional Weather

Expires:202609220900;;861486
ASUS43 KFSD 220810
RWRFSD

WEATHER ROUNDUP FOR SE SOUTH DAKOTA/SW MINNESOTA/NW IOWA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
300 AM CDT TUE SEP 22 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>070-220900-
SOUTHEAST SOUTH DAKOTA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
BROOKINGS      CLOUDY    52  50  93 E6        30.27S TC  11           
CHAMBERLAIN    CLOUDY    48  48 100 CALM      30.27S TC   9           
HURON          CLOUDY    53  52  96 E5        30.26S FOG     TC  12   
MADISON        MIX PCPN  52  52 100 E8        30.25S TC  11           
MITCHELL       CLOUDY    53  53 100 NE5       30.25S FOG     TC  12   
SIOUX FALLS    CLOUDY    54  53  97 E8        30.24S TC  12           
WINNER         FOG       46  46 100 CALM      30.25S VSB 1/4 TC   8   
YANKTON        LGT RAIN  55  55 100 NE5       30.23S FOG     TC  13   
$$


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

Erwin, SD

Tonight
Drizzle
52°11°
0%
Tuesday
Rain Showers
58°/ 48° 14°/
20%
Wednesday
Rain Showers
62°/ 52° 17°/ 11°
70%
Thursday
Rain Showers
68°/ 52° 20°/ 11°
20%
Friday
Rain Showers
65°/ 55° 18°/ 13°
60%
Saturday
Cloudy
68°/ 55° 20°/ 13°
0%
Sunday
Sunny
68°/ 55° 20°/ 13°
0%
Monday
Rain Showers
68°20°
50%

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

Hayti, SD

Tonight
Drizzle
52°11°
0%
Tuesday
Drizzle
60°/ 48° 16°/
0%
Wednesday
Rain Showers
62°/ 52° 17°/ 11°
90%
Thursday
Mostly Cloudy
68°/ 52° 20°/ 11°
30%
Friday
Rain Showers
65°/ 55° 18°/ 13°
60%
Sat-Sat Night
Rain Showers
68°20°
20%
Sunday
Partly Cloudy
70°/ 55° 21°/ 13°
30%
Monday
Thunderstorms
70°21°
50%

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

Clark, SD

Tonight
Drizzle
45°
0%
Tuesday
Mostly Cloudy
60°/ 48° 16°/
0%
Wednesday
Rain Showers
62°/ 55° 17°/ 13°
90%
Thursday
Mostly Cloudy
68°/ 55° 20°/ 13°
30%
Friday
Rain Showers
65°/ 55° 18°/ 13°
70%
Sat-Sat Night
Rain Showers
68°20°
20%
Sunday
Partly Cloudy
70°/ 55° 21°/ 13°
30%
Monday
Thunderstorms
70°21°
50%

Night: Mostly cloudy with a slight chance of drizzle. Lows in the mid 40s. East winds around 10 mph.

Watertown, SD

Tonight
Drizzle
45°
0%
Tuesday
Mostly Cloudy
60°/ 45° 16°/
0%
Wednesday
Rain Showers
62°/ 52° 17°/ 11°
90%
Thursday
Mostly Cloudy
68°/ 55° 20°/ 13°
20%
Friday
Rain Showers
65°/ 55° 18°/ 13°
60%
Saturday
Thunderstorms
68°/ 55° 20°/ 13°
20%
Sunday
Partly Cloudy
70°/ 55° 21°/ 13°
30%
Monday
Thunderstorms
68°20°
50%

Night: Mostly cloudy with a slight chance of drizzle. Patchy fog. Lows in the mid 40s. East winds 5 to 10 mph.

Brookings, SD

Tonight
Rain Showers
52°11°
40%
Tuesday
Drizzle
58°/ 48° 14°/
0%
Wednesday
Mostly Cloudy
62°/ 52° 17°/ 11°
80%
Thursday
Rain Showers
65°/ 52° 18°/ 11°
40%
Friday
Rain Showers
65°/ 55° 18°/ 13°
60%
Saturday
Rain Showers
65°/ 55° 18°/ 13°
50%
Sunday
Sunny
68°/ 55° 20°/ 13°
0%
Monday
Rain Showers
68°20°
50%

Night: Cloudy with a chance of showers with a slight chance of drizzle. Patchy fog. Near steady temperature in the lower 50s. East winds 5 to 10 mph. Chance of rain 40 percent.

Howard, SD

Tonight
Drizzle
52°11°
0%
Tuesday
Drizzle
58°/ 48° 14°/
0%
Wednesday
Rain Showers
65°/ 52° 18°/ 11°
70%
Thursday
Rain Showers
68°/ 55° 20°/ 13°
30%
Friday
Rain Showers
68°/ 55° 20°/ 13°
40%
Saturday
Cloudy
70°/ 55° 21°/ 13°
0%
Sunday
Sunny
72°/ 55° 22°/ 13°
0%
Monday
Rain Showers
70°21°
50%

Night: Cloudy with a slight chance of very light drizzle. Near steady temperature in the lower 50s. East winds 5 to 10 mph.

Huron, SD

Tonight
Drizzle
52°11°
0%
Tuesday
Drizzle
60°/ 50° 16°/ 10°
20%
Wednesday
Rain Showers
65°/ 55° 18°/ 13°
70%
Thursday
Mostly Cloudy
70°/ 55° 21°/ 13°
0%
Friday
Rain Showers
68°/ 55° 20°/ 13°
50%
Saturday
Mostly Cloudy
72°/ 55° 22°/ 13°
0%
Sunday
Sunny
68°/ 55° 20°/ 13°
40%
Monday
Rain Showers
70°21°
50%

Night: Mostly cloudy with a slight chance of very light drizzle. Near steady temperature in the lower 50s. East winds around 5 mph.

Madison, SD

Tonight
Drizzle
52°11°
0%
Tuesday
Rain Showers
58°/ 48° 14°/
20%
Wednesday
Rain Showers
62°/ 52° 17°/ 11°
80%
Thursday
Rain Showers
65°/ 52° 18°/ 11°
40%
Friday
Rain Showers
65°/ 55° 18°/ 13°
60%
Saturday
Rain Showers
68°/ 55° 20°/ 13°
40%
Sunday
Sunny
68°/ 55° 20°/ 13°
0%
Monday
Rain Showers
68°20°
50%

Night: Cloudy with a chance of drizzle. Near steady temperature in the lower 50s. East winds 5 to 10 mph.

Clear Lake, SD

Tonight
Drizzle
50°10°
0%
Tuesday
Drizzle
58°/ 45° 14°/
0%
Wednesday
Mostly Cloudy
62°/ 52° 17°/ 11°
90%
Thu-Thu Night
Rain Showers
65°18°
20%
Friday
Rain Showers
65°/ 55° 18°/ 13°
60%
Saturday
Thunderstorms
68°/ 55° 20°/ 13°
40%
Sunday
Partly Cloudy
68°/ 55° 20°/ 13°
20%
Monday
Rain Showers
68°20°
50%

Night: Mostly cloudy with a slight chance of drizzle. Patchy fog. Near steady temperature around 50. East winds 5 to 10 mph.

Redfield, SD

Tonight
Mostly Cloudy
48°
0%
Tuesday
Mostly Cloudy
62°/ 48° 17°/
0%
Wednesday
Rain Showers
65°/ 55° 18°/ 13°
70%
Thursday
Mostly Cloudy
72°/ 52° 22°/ 11°
30%
Friday
Rain Showers
68°/ 55° 20°/ 13°
70%
Saturday
Mostly Cloudy
72°/ 55° 22°/ 13°
0%
Sun Night
Rain Showers
55°13°
40%
Monday
Thunderstorms
72°22°
50%

Night: Mostly cloudy and cooler. Near steady temperature in the upper 40s. Southeast winds around 5 mph.

Woonsocket, SD

Tonight
Drizzle
52°11°
0%
Tuesday
Drizzle
62°/ 50° 17°/ 10°
20%
Wednesday
Rain Showers
65°/ 55° 18°/ 13°
70%
Thursday
Rain Showers
72°/ 55° 22°/ 13°
30%
Friday
Rain Showers
68°/ 58° 20°/ 14°
50%
Saturday
Cloudy
72°/ 55° 22°/ 13°
0%
Sunday
Sunny
72°/ 55° 22°/ 13°
0%
Monday
Rain Showers
72°22°
50%

Night: Cloudy with a slight chance of very light drizzle. Near steady temperature in the lower 50s. East winds around 5 mph.

Flandreau, SD

Tonight
Drizzle
52°11°
0%
Tuesday
Drizzle
58°/ 48° 14°/
0%
Wednesday
Mostly Cloudy
62°/ 52° 17°/ 11°
80%
Thursday
Rain Showers
65°/ 52° 18°/ 11°
40%
Friday
Rain Showers
65°/ 55° 18°/ 13°
60%
Saturday
Rain Showers
65°/ 55° 18°/ 13°
40%
Sunday
Sunny
68°/ 55° 20°/ 13°
0%
Monday
Rain Showers
68°20°
50%

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

Milbank, SD

Tonight
Drizzle
45°
0%
Tuesday
Partly Cloudy
60°/ 48° 16°/
0%
Wednesday
Rain Showers
65°/ 52° 18°/ 11°
90%
Thursday
Rain Showers
68°/ 55° 20°/ 13°
20%
Friday
Rain Showers
65°/ 55° 18°/ 13°
60%
Saturday
Thunderstorms
68°/ 55° 20°/ 13°
50%
Sunday
Partly Cloudy
68°/ 55° 20°/ 13°
30%
Monday
Thunderstorms
68°20°
50%

Night: Mostly cloudy with a slight chance of drizzle. Patchy fog. Lows in the mid 40s. East winds around 5 mph with gusts up to 20 mph.

Salem, SD

Tonight
Drizzle
52°11°
0%
Tuesday
Rain Showers
60°/ 50° 16°/ 10°
20%
Wednesday
Rain Showers
65°/ 52° 18°/ 11°
80%
Thursday
Rain Showers
68°/ 55° 20°/ 13°
40%
Friday
Rain Showers
65°/ 58° 18°/ 14°
60%
Saturday
Rain Showers
70°/ 58° 21°/ 14°
30%
Sunday
Sunny
72°/ 55° 22°/ 13°
0%
Monday
Rain Showers
72°22°
50%

Night: Cloudy with a slight chance of drizzle. Near steady temperature in the lower 50s. East winds 5 to 10 mph.

Webster, SD

Tonight
Mostly Cloudy
50°10°
0%
Tuesday
Mostly Cloudy
62°/ 48° 17°/
0%
Wednesday
Rain Showers
62°/ 55° 17°/ 13°
90%
Thursday
Mostly Cloudy
68°/ 55° 20°/ 13°
20%
Friday
Rain Showers
65°/ 55° 18°/ 13°
70%
Saturday
Thunderstorms
68°/ 55° 20°/ 13°
20%
Sunday
Partly Cloudy
68°/ 55° 20°/ 13°
40%
Monday
Thunderstorms
68°20°
50%

Night: Mostly cloudy. Near steady temperature around 50. Southeast winds 5 to 10 mph with gusts up to 20 mph.

Tyler, MN

Tonight
Rain Showers
50°10°
20%
Tuesday
Mostly Cloudy
58°/ 48° 14°/
0%
Wednesday
Partly Cloudy
62°/ 52° 17°/ 11°
90%
Thursday
Rain Showers
65°/ 52° 18°/ 11°
40%
Friday
Rain Showers
65°/ 55° 18°/ 13°
50%
Saturday
Rain Showers
65°/ 55° 18°/ 13°
50%
Sunday
Sunny
68°/ 55° 20°/ 13°
0%
Monday
Rain Showers
68°20°
50%

Night: Cloudy with a slight chance of showers and drizzle. Patchy fog. Near steady temperature around 50. East winds 5 to 10 mph. Chance of rain 20 percent.

Wessington Springs, SD

Tonight
Mostly Cloudy
50°10°
0%
Tuesday
Mostly Cloudy
58°/ 50° 14°/ 10°
50%
Wednesday
Rain Showers
65°/ 55° 18°/ 13°
50%
Thursday
Mostly Cloudy
72°/ 55° 22°/ 13°
30%
Friday
Rain Showers
68°/ 58° 20°/ 14°
40%
Saturday
Mostly Cloudy
72°/ 55° 22°/ 13°
0%
Sunday
Sunny
68°/ 55° 20°/ 13°
30%
Monday
Rain Showers
70°21°
50%

Night: Mostly cloudy. Patchy fog. Near steady temperature around 50. East winds around 5 mph.

Sioux Falls, SD

Tonight
Drizzle
52°11°
0%
Tuesday
Rain Showers
58°/ 48° 14°/
20%
Wednesday
Mostly Cloudy
62°/ 52° 17°/ 11°
80%
Thursday
Rain Showers
65°/ 55° 18°/ 13°
50%
Friday
Rain Showers
65°/ 55° 18°/ 13°
60%
Saturday
Rain Showers
68°/ 58° 20°/ 14°
40%
Sunday
Partly Cloudy
72°/ 55° 22°/ 13°
0%
Monday
Rain Showers
70°21°
40%

Night: Cloudy with a chance of drizzle. Near steady temperature in the lower 50s. East winds 5 to 10 mph.

Alexandria, SD

Tonight
Drizzle
52°11°
0%
Tuesday
Drizzle
62°/ 50° 17°/ 10°
0%
Wednesday
Rain Showers
65°/ 55° 18°/ 13°
70%
Thursday
Rain Showers
70°/ 55° 21°/ 13°
40%
Friday
Rain Showers
68°/ 58° 20°/ 14°
50%
Saturday
Cloudy
72°/ 58° 22°/ 14°
0%
Sunday
Sunny
72°/ 55° 22°/ 13°
0%
Monday
Rain Showers
72°22°
50%

Night: Cloudy with a slight chance of very light drizzle. Near steady temperature in the lower 50s. Northeast winds around 5 mph.

Mitchell, SD

Tonight
Drizzle
52°11°
0%
Tuesday
Drizzle
62°/ 50° 17°/ 10°
20%
Wednesday
Rain Showers
65°/ 55° 18°/ 13°
60%
Thursday
Rain Showers
72°/ 55° 22°/ 13°
30%
Friday
Rain Showers
68°/ 58° 20°/ 14°
50%
Saturday
Cloudy
72°/ 55° 22°/ 13°
0%
Sunday
Sunny
72°/ 55° 22°/ 13°
0%
Monday
Rain Showers
72°22°
50%

Night: Cloudy with a slight chance of very light drizzle. Near steady temperature in the lower 50s. Northeast winds around 5 mph.

Names listed above may include county names.

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