Altamont, SD Weather Forecast & Current Conditions

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Altamont, SD Weather Maps

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Altamont Weather Map
UTC Time: 10/8/2026, 22:04
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Altamont, SD Regional Weather

Expires:202610082300;;759959
ASUS43 KFSD 082202
RWRSD 

WEATHER ROUNDUP FOR SOUTH DAKOTA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
500 PM CDT THU OCT 08 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>070-082300-
SOUTHEAST SOUTH DAKOTA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
SIOUX FALLS    PTSUNNY   71  45  39 SE8       29.99F TC  22           
HURON          SUNNY     75  43  31 SE6       29.98S TC  24           
CHAMBERLAIN    PTSUNNY   74  50  43 E7        29.98F TC  23           
MADISON        MOSUNNY   70  46  43 SE7       30.01R TC  21           
MITCHELL       PTSUNNY   76  44  32 SE9       29.96F TC  24           
YANKTON        MOSUNNY   78  47  33 E12       29.95F TC  26           
$$
 
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

Altamont, SD

Tonight
Cloudy
48°9°
0%
Friday
Sunny
75°/ 65° 24°/ 18°
0%
Saturday
Sunny
85°/ 65° 29°/ 18°
0%
Sunday
Partly Cloudy
78°/ 48° 26°/ 9°
0%
Columbus Day
Rain Showers
60°16°
30%
Mon Night-Tue
Mostly Cloudy
42°6°
0%
Tue Night
Cloudy
45°7°
0%
Wed-Wed Night
Rain Showers
62°17°
50%
Thursday
Rain Showers
60°16°
40%

Night: Mostly clear this evening, then becoming partly cloudy. Lows in the upper 40s. Southeast winds 5 to 10 mph.

Watertown, SD

Tonight
Cloudy
48°9°
0%
Friday
Partly Cloudy
75°/ 65° 24°/ 18°
0%
Saturday
Sunny
85°/ 62° 29°/ 17°
0%
Sunday
Partly Cloudy
75°/ 45° 24°/ 7°
0%
Columbus Day
Rain Showers
58°14°
40%
Mon Night-Tue
Mostly Cloudy
42°6°
0%
Tue Night
Cloudy
45°7°
0%
Wed-Wed Night
Rain Showers
62°17°
50%
Thursday
Rain Showers
58°14°
40%

Night: Mostly clear this evening, then becoming partly cloudy. Lows in the upper 40s. East winds 5 to 10 mph.

Milbank, SD

Tonight
Cloudy
45°7°
0%
Friday
Sunny
75°/ 65° 24°/ 18°
0%
Saturday
Sunny
85°/ 62° 29°/ 17°
0%
Sunday
Partly Cloudy
75°/ 48° 24°/ 9°
0%
Columbus Day
Rain Showers
58°14°
40%
Mon Night
Mostly Cloudy
42°6°
0%
Tue-Tue Night
Cloudy
58°14°
0%
Wed-Wed Night
Rain Showers
65°18°
50%
Thursday
Rain Showers
60°16°
40%

Night: Partly cloudy. Lows in the mid 40s. Southeast winds around 5 mph.

Madison, MN

Tonight
Cloudy
48°9°
0%
Friday
Sunny
78°/ 65° 26°/ 18°
0%
Saturday
Sunny
88°/ 65° 31°/ 18°
0%
Sunday
Sunny
80°/ 50° 27°/ 10°
0%
Columbus Day
Rain Showers
62°17°
40%
Mon Night
Mostly Cloudy
45°7°
0%
Tuesday
Sunny
60°/ 45° 16°/ 7°
0%
Wednesday
Rain Showers
65°/ 48° 18°/ 9°
50%
Thursday
Rain Showers
62°17°
50%

Night: Partly cloudy. Lows in the upper 40s. East winds up to 5 mph.

Hayti, SD

Tonight
Cloudy
48°9°
0%
Friday
Partly Cloudy
75°/ 65° 24°/ 18°
0%
Saturday
Sunny
85°/ 62° 29°/ 17°
0%
Sunday
Partly Cloudy
78°/ 48° 26°/ 9°
0%
Columbus Day
Rain Showers
62°17°
30%
Mon Night-Tue
Mostly Cloudy
42°6°
0%
Tue Night
Cloudy
45°7°
0%
Wed-Wed Night
Rain Showers
65°18°
50%
Thursday
Rain Showers
60°16°
40%

Night: Mostly clear this evening, then becoming partly cloudy. Lows in the upper 40s. East winds 5 to 10 mph.

Granite Falls, MN

Tonight
Cloudy
48°9°
0%
Friday
Sunny
78°/ 65° 26°/ 18°
0%
Saturday
Sunny
88°/ 68° 31°/ 20°
0%
Sunday
Sunny
82°/ 52° 28°/ 11°
0%
Columbus Day
Mostly Cloudy
65°18°
0%
Mon Night
Mostly Cloudy
45°7°
0%
Tuesday
Partly Cloudy
60°/ 45° 16°/ 7°
0%
Wednesday
Rain Showers
65°/ 50° 18°/ 10°
50%
Thursday
Rain Showers
62°17°
50%

Night: Partly cloudy. Lows in the upper 40s. East winds up to 10 mph.

Tyler, MN

Tonight
Cloudy
48°9°
0%
Friday
Sunny
75°/ 65° 24°/ 18°
0%
Saturday
Sunny
85°/ 65° 29°/ 18°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Columbus Day
Mostly Cloudy
62°17°
0%
Mon Night
Mostly Cloudy
45°7°
0%
Tuesday
Partly Cloudy
58°/ 45° 14°/ 7°
0%
Wednesday
Rain Showers
65°/ 50° 18°/ 10°
50%
Thursday
Rain Showers
60°16°
50%

Night: Mostly clear this evening, then becoming partly cloudy. Lows in the upper 40s. Southeast winds 5 to 10 mph.

Brookings, SD

Tonight
Cloudy
50°10°
0%
Friday
Sunny
75°/ 65° 24°/ 18°
0%
Saturday
Sunny
85°/ 65° 29°/ 18°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Columbus Day
Mostly Cloudy
62°17°
0%
Mon Night
Mostly Cloudy
45°7°
0%
Tuesday
Partly Cloudy
58°/ 45° 14°/ 7°
0%
Wednesday
Rain Showers
65°/ 50° 18°/ 10°
50%
Thursday
Rain Showers
60°16°
40%

Night: Mostly clear this evening, then becoming partly cloudy. Lows around 50. East winds 5 to 10 mph.

Ortonville, MN

Tonight
Cloudy
45°7°
0%
Friday
Sunny
75°/ 62° 24°/ 17°
0%
Saturday
Sunny
88°/ 62° 31°/ 17°
0%
Sunday
Partly Cloudy
75°/ 48° 24°/ 9°
0%
Columbus Day
Rain Showers
60°16°
50%
Mon Night
Mostly Cloudy
42°6°
0%
Tuesday
Partly Cloudy
58°/ 42° 14°/ 6°
0%
Wednesday
Rain Showers
65°/ 48° 18°/ 9°
50%
Thursday
Rain Showers
60°16°
40%

Night: Partly cloudy. Lows in the mid 40s. East winds around 5 mph.

Sisseton, SD

Tonight
Cloudy
45°7°
0%
Friday
Sunny
75°/ 62° 24°/ 17°
0%
Saturday
Sunny
85°/ 60° 29°/ 16°
0%
Sun-Sun Night
Mostly Cloudy
72°22°
0%
Columbus Day
Rain Showers
58°14°
50%
Mon Night
Mostly Cloudy
40°4°
0%
Tuesday
Partly Cloudy
58°/ 42° 14°/ 6°
0%
Wed-Wed Night
Rain Showers
65°18°
50%
Thursday
Rain Showers
60°16°
40%

Night: Partly cloudy this evening, then clearing. Lows in the mid 40s. Southeast winds 5 to 10 mph.

Marshall, MN

Tonight
Cloudy
48°9°
0%
Friday
Sunny
75°/ 65° 24°/ 18°
0%
Saturday
Sunny
88°/ 68° 31°/ 20°
0%
Sunday
Sunny
82°/ 52° 28°/ 11°
0%
Columbus Day
Mostly Cloudy
65°18°
0%
Mon Night
Mostly Cloudy
45°7°
0%
Tuesday
Partly Cloudy
60°/ 48° 16°/ 9°
0%
Wednesday
Rain Showers
65°/ 52° 18°/ 11°
50%
Thursday
Rain Showers
62°17°
50%

Night: Mostly clear this evening, then becoming partly cloudy. Lows in the upper 40s. Southeast winds 5 to 10 mph.

De Smet, SD

Tonight
Cloudy
50°10°
0%
Friday
Sunny
78°/ 65° 26°/ 18°
0%
Saturday
Sunny
85°/ 65° 29°/ 18°
0%
Sunday
Sunny
78°/ 50° 26°/ 10°
0%
Columbus Day
Mostly Cloudy
62°17°
0%
Mon Night
Mostly Cloudy
42°6°
0%
Tuesday
Partly Cloudy
60°/ 45° 16°/ 7°
0%
Wednesday
Rain Showers
65°/ 48° 18°/ 9°
50%
Thursday
Rain Showers
62°17°
40%

Night: Partly cloudy. Lows around 50. East winds 5 to 10 mph.

Clark, SD

Tonight
Cloudy
48°9°
0%
Friday
Sunny
75°/ 65° 24°/ 18°
0%
Saturday
Sunny
85°/ 62° 29°/ 17°
0%
Sunday
Partly Cloudy
75°/ 48° 24°/ 9°
0%
Columbus Day
Rain Showers
58°14°
40%
Mon Night-Tue
Mostly Cloudy
42°6°
0%
Tue Night
Rain Showers
45°7°
20%
Wed-Wed Night
Rain Showers
65°18°
50%
Thursday
Rain Showers
58°14°
40%

Night: Partly cloudy. Lows in the upper 40s. East winds 10 to 15 mph.

Benson, MN

Tonight
Mostly Cloudy
48°9°
0%
Friday
Sunny
75°/ 62° 24°/ 17°
0%
Saturday
Sunny
88°/ 65° 31°/ 18°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Columbus Day
Rain Showers
62°17°
40%
Mon Night
Mostly Cloudy
45°7°
0%
Tuesday
Partly Cloudy
58°/ 45° 14°/ 7°
0%
Wednesday
Rain Showers
62°/ 48° 17°/ 9°
50%
Thursday
Rain Showers
60°16°
50%

Night: Partly cloudy then becoming mostly cloudy late in the evening then becoming partly cloudy. Lows in the upper 40s. East winds up to 10 mph.

Montevideo, MN

Tonight
Cloudy
48°9°
0%
Friday
Sunny
78°/ 65° 26°/ 18°
0%
Saturday
Sunny
88°/ 65° 31°/ 18°
0%
Sunday
Sunny
82°/ 52° 28°/ 11°
0%
Columbus Day
Rain Showers
62°17°
30%
Mon Night
Mostly Cloudy
45°7°
0%
Tuesday
Partly Cloudy
58°/ 45° 14°/ 7°
0%
Wednesday
Rain Showers
65°/ 48° 18°/ 9°
50%
Thursday
Rain Showers
62°17°
50%

Night: Partly cloudy. Lows in the upper 40s. East winds up to 10 mph.

Webster, SD

Tonight
Cloudy
48°9°
0%
Friday
Sunny
75°/ 65° 24°/ 18°
0%
Saturday
Sunny
85°/ 62° 29°/ 17°
0%
Sun-Sun Night
Mostly Cloudy
72°22°
0%
Columbus Day
Rain Showers
55°13°
50%
Mon Night
Mostly Cloudy
40°4°
0%
Tuesday
Partly Cloudy
58°/ 45° 14°/ 7°
20%
Wed-Wed Night
Rain Showers
62°17°
50%
Thursday
Rain Showers
58°14°
40%

Night: Partly cloudy. Lows in the upper 40s. Southeast winds 5 to 10 mph.

Flandreau, SD

Tonight
Cloudy
52°11°
0%
Friday
Sunny
75°/ 65° 24°/ 18°
0%
Saturday
Sunny
85°/ 65° 29°/ 18°
0%
Sunday
Sunny
80°/ 52° 27°/ 11°
0%
Columbus Day
Mostly Cloudy
65°18°
0%
Mon Night
Mostly Cloudy
45°7°
0%
Tuesday
Partly Cloudy
62°/ 48° 17°/ 9°
0%
Wednesday
Rain Showers
65°/ 50° 18°/ 10°
50%
Thursday
Rain Showers
62°17°
40%

Night: Partly cloudy. Lows in the lower 50s. East winds 5 to 10 mph.

Madison, SD

Tonight
Cloudy
52°11°
0%
Friday
Sunny
78°/ 65° 26°/ 18°
0%
Saturday
Sunny
85°/ 65° 29°/ 18°
0%
Sunday
Sunny
80°/ 52° 27°/ 11°
0%
Columbus Day
Mostly Cloudy
65°18°
0%
Mon Night
Mostly Cloudy
45°7°
0%
Tuesday
Partly Cloudy
62°/ 48° 17°/ 9°
0%
Wednesday
Rain Showers
65°/ 50° 18°/ 10°
50%
Thursday
Rain Showers
62°17°
40%

Night: Partly cloudy. Lows in the lower 50s. East winds 5 to 10 mph.

Wheaton, MN

Tonight
Cloudy
42°6°
0%
Friday
Sunny
75°/ 62° 24°/ 17°
0%
Saturday
Sunny
85°/ 60° 29°/ 16°
0%
Sun-Sun Night
Mostly Cloudy
75°24°
0%
Columbus Day
Rain Showers
58°14°
50%
Mon Night
Mostly Cloudy
40°4°
0%
Tuesday
Partly Cloudy
58°/ 42° 14°/ 6°
0%
Wednesday
Rain Showers
65°/ 45° 18°/ 7°
50%
Thursday
Rain Showers
60°16°
40%

Night: Partly cloudy this evening, then clearing. Lows in the lower 40s. Southeast winds around 5 mph.

Pipestone, MN

Tonight
Cloudy
52°11°
0%
Friday
Sunny
75°/ 65° 24°/ 18°
0%
Saturday
Sunny
82°/ 65° 28°/ 18°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Columbus Day
Mostly Cloudy
65°18°
0%
Mon Night
Mostly Cloudy
45°7°
0%
Tuesday
Partly Cloudy
60°/ 45° 16°/ 7°
0%
Wednesday
Rain Showers
65°/ 50° 18°/ 10°
50%
Thursday
Rain Showers
62°17°
50%

Night: Partly cloudy. Lows in the lower 50s. Southeast winds 5 to 10 mph.

Names listed above may include county names.

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