Dewey, SD Weather Forecast & Current Conditions

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Dewey Weather Map
UTC Time: 9/16/2026, 11:55
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Dewey, SD Regional Weather

Expires:202609161200;;542678
ASUS43 KFSD 161110
RWRSD 

WEATHER ROUNDUP FOR SOUTH DAKOTA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
600 AM CDT WED SEP 16 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>074-161200-
SOUTHWEST AND SOUTH CENTRAL SOUTH DAKOTA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
RAPID CTY ARPT MOCLDY    55  45  68 SE9       30.14F TC  13           
PIERRE         CLOUDY    56  53  90 SE10      30.22R TC  13           
CUSTER         CLOUDY    50  42  74 VRB7      30.21S TC  10           
PHILIP         CLOUDY    57  47  69 E6        30.20S TC  14           
SPEARFISH      MOCLDY    52  43  71 W3        30.10R TC  11           
WINNER         CLOUDY    56  48  74 SE14      30.23F 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

Dewey, SD

Today
Cloudy
82°/ 55° 28°/ 13°
0%
Thursday
Thunderstorms
68°/ 55° 20°/ 13°
80%
Friday
Cloudy
75°/ 55° 24°/ 13°
60%
Saturday
Thunderstorms
70°/ 52° 21°/ 11°
80%
Sunday
Thunderstorms
68°/ 48° 20°/
70%
Monday
Rain Showers
70°/ 48° 21°/
20%
Tuesday
Cloudy
72°22°
0%

Day: Partly cloudy. Highs in the lower 80s. Southeast winds 10 to 15 mph, becoming west 5 to 10 mph this afternoon. Gusts up to 25 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph.

Hot Springs, SD

Today
Cloudy
85°/ 55° 29°/ 13°
0%
Thursday
Thunderstorms
70°/ 55° 21°/ 13°
80%
Friday
Cloudy
78°/ 52° 26°/ 11°
50%
Saturday
Thunderstorms
75°/ 52° 24°/ 11°
70%
Sunday
Thunderstorms
72°/ 48° 22°/
60%
Monday
Rain Showers
75°/ 48° 24°/
20%
Tuesday
Cloudy
78°26°
0%

Day: Partly cloudy. Highs in the mid 80s. Southeast winds 10 to 15 mph, becoming west 5 to 10 mph this afternoon. Gusts up to 25 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 50s. Northeast winds 10 to 20 mph with gusts up to 30 mph.

Ardmore, SD

Today
Cloudy
85°/ 55° 29°/ 13°
0%
Thursday
Thunderstorms
70°/ 52° 21°/ 11°
80%
Friday
Cloudy
78°/ 52° 26°/ 11°
40%
Saturday
Thunderstorms
75°/ 48° 24°/
70%
Sunday
Thunderstorms
72°/ 48° 22°/
50%
Monday
Cloudy
75°/ 48° 24°/
0%
Tuesday
Cloudy
78°26°
0%

Day: Partly cloudy. Highs in the mid 80s. Southeast winds 10 to 15 mph, becoming west 5 to 10 mph this afternoon. Gusts up to 25 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 50s. Northeast winds 10 to 20 mph with gusts up to 30 mph.

Newcastle, WY

Today
Cloudy
82°/ 52° 28°/ 11°
0%
Thursday
Thunderstorms
72°/ 52° 22°/ 11°
70%
Friday
Cloudy
78°/ 52° 26°/ 11°
70%
Saturday
Thunderstorms
72°/ 48° 22°/
70%
Sunday
Thunderstorms
70°/ 45° 21°/
60%
Monday
Cloudy
72°/ 45° 22°/
0%
Tuesday
Cloudy
75°24°
0%

Day: Partly cloudy. Highs in the lower 80s. Southeast winds 10 to 15 mph with gusts up to 30 mph, becoming west 5 to 10 mph with gusts up to 20 mph this afternoon.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. North winds 10 to 15 mph with gusts up to 25 mph, diminishing to around 5 mph after midnight.

Hill City, SD

Today
Cloudy
78°/ 52° 26°/ 11°
0%
Thursday
Thunderstorms
65°/ 52° 18°/ 11°
80%
Friday
Rain Showers
72°/ 52° 22°/ 11°
70%
Saturday
Thunderstorms
68°/ 48° 20°/
80%
Sunday
Thunderstorms
65°/ 45° 18°/
70%
Monday
Rain Showers
68°/ 48° 20°/
30%
Tuesday
Cloudy
70°21°
0%

Day: Partly cloudy. Highs in the upper 70s. Southwest winds 5 to 10 mph with gusts up to 30 mph, becoming northwest with gusts up to 20 mph this afternoon.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. North winds 5 to 10 mph with gusts up to 25 mph.

Lead, SD

Today
Cloudy
75°/ 45° 24°/
0%
Thursday
Thunderstorms
65°/ 48° 18°/
80%
Friday
Thunderstorms
72°/ 48° 22°/
70%
Saturday
Thunderstorms
65°/ 45° 18°/
90%
Sunday
Thunderstorms
62°/ 42° 17°/
70%
Monday
Rain Showers
65°/ 45° 18°/
40%
Tuesday
Rain Showers
68°20°
20%

Day: Partly cloudy. Highs in the mid 70s. Southwest winds 5 to 10 mph with gusts up to 30 mph, becoming northwest with gusts up to 20 mph this afternoon.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 40s. Northeast winds 5 to 10 mph. Gusts up to 20 mph in the evening.

Hermosa, SD

Today
Cloudy
85°/ 55° 29°/ 13°
0%
Thursday
Thunderstorms
70°/ 55° 21°/ 13°
90%
Friday
Cloudy
75°/ 52° 24°/ 11°
60%
Saturday
Thunderstorms
72°/ 52° 22°/ 11°
80%
Sunday
Thunderstorms
72°/ 48° 22°/
70%
Monday
Rain Showers
72°/ 48° 22°/
30%
Tuesday
Cloudy
78°26°
0%

Day: Partly cloudy. Highs in the mid 80s. Southwest winds 10 to 15 mph with gusts up to 30 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 50s. North winds 10 to 15 mph with gusts up to 30 mph.

Rochelle, WY

Today
Cloudy
82°/ 50° 28°/ 10°
0%
Thursday
Thunderstorms
70°/ 52° 21°/ 11°
70%
Friday
Cloudy
78°/ 52° 26°/ 11°
70%
Saturday
Thunderstorms
72°/ 48° 22°/
70%
Sunday
Thunderstorms
70°/ 45° 21°/
50%
Monday
Cloudy
75°/ 45° 24°/
0%
Tuesday
Cloudy
75°24°
0%

Day: Partly cloudy. Highs in the lower 80s. South winds 10 to 20 mph with gusts up to 35 mph, becoming northwest 10 to 15 mph with gusts up to 25 mph this afternoon.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows around 50. North winds 10 to 15 mph. Gusts up to 30 mph, decreasing to 20 mph after midnight.

Sundance, WY

Today
Cloudy
78°/ 48° 26°/
0%
Thursday
Thunderstorms
70°/ 52° 21°/ 11°
70%
Friday
Cloudy
75°/ 52° 24°/ 11°
80%
Saturday
Thunderstorms
68°/ 48° 20°/
80%
Sunday
Thunderstorms
65°/ 45° 18°/
70%
Monday
Rain Showers
72°/ 48° 22°/
20%
Tuesday
Cloudy
75°24°
0%

Day: Partly cloudy this morning, then clearing. Highs in the upper 70s. South winds 10 to 20 mph with gusts up to 30 mph, becoming northwest 5 to 10 mph with gusts up to 20 mph this afternoon.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 40s. Northeast winds 5 to 10 mph. Gusts up to 20 mph in the evening.

Oral, SD

Today
Cloudy
85°/ 52° 29°/ 11°
0%
Thursday
Thunderstorms
72°/ 55° 22°/ 13°
90%
Friday
Cloudy
78°/ 52° 26°/ 11°
50%
Saturday
Thunderstorms
75°/ 50° 24°/ 10°
70%
Sunday
Thunderstorms
75°/ 48° 24°/
60%
Monday
Rain Showers
75°/ 48° 24°/
20%
Tuesday
Cloudy
78°26°
0%

Day: Partly cloudy. Highs in the mid 80s. South winds 10 to 20 mph with gusts up to 30 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. Northeast winds 10 to 20 mph with gusts up to 30 mph.

Lusk, WY

Today
Rain Showers
82°/ 52° 28°/ 11°
20%
Thursday
Rain Showers
72°/ 52° 22°/ 11°
90%
Friday
Sunny
78°/ 50° 26°/ 10°
50%
Sat-Sat Night
Thunderstorms
75°24°
70%
Sunday
Rain Showers
72°/ 45° 22°/
50%
Monday
Sunny
75°/ 45° 24°/
0%

Day: Mostly sunny with isolated showers. Warmer with highs in the lower 80s. South winds 15 to 20 mph with gusts up to 35 mph, becoming northwest 10 to 15 mph this afternoon. Chance of rain 20 percent.

Night: Mostly cloudy. Lows in the lower 50s. East winds 10 to 15 mph.

Rapid City, SD

Today
Cloudy
85°/ 52° 29°/ 11°
0%
Thursday
Thunderstorms
68°/ 55° 20°/ 13°
90%
Friday
Rain Showers
75°/ 55° 24°/ 13°
70%
Saturday
Thunderstorms
70°/ 52° 21°/ 11°
80%
Sunday
Thunderstorms
70°/ 48° 21°/
70%
Monday
Rain Showers
72°/ 50° 22°/ 10°
30%
Tuesday
Cloudy
75°24°
0%

Day: Partly cloudy. Highs in the mid 80s. South winds 15 to 20 mph with gusts up to 40 mph, becoming east 10 to 15 mph with gusts up to 30 mph this afternoon.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. North winds 10 to 15 mph with gusts up to 25 mph.

Sturgis, SD

Today
Cloudy
82°/ 50° 28°/ 10°
0%
Thursday
Thunderstorms
70°/ 58° 21°/ 14°
90%
Friday
Rain Showers
75°/ 55° 24°/ 13°
70%
Saturday
Thunderstorms
70°/ 52° 21°/ 11°
80%
Sunday
Thunderstorms
70°/ 48° 21°/
70%
Monday
Rain Showers
72°/ 50° 22°/ 10°
30%
Tuesday
Cloudy
75°24°
0%

Day: Partly cloudy this morning, then clearing. Highs in the lower 80s. Southeast winds 10 to 20 mph with gusts up to 40 mph, becoming north 10 to 15 mph with gusts up to 25 mph this afternoon.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows around 50. Northwest winds 5 to 10 mph with gusts up to 25 mph.

Kyle, SD

Today
Rain Showers
88°/ 52° 31°/ 11°
20%
Thursday
Thunderstorms
75°/ 55° 24°/ 13°
90%
Friday
Cloudy
75°/ 52° 24°/ 11°
50%
Saturday
Rain Showers
72°/ 50° 22°/ 10°
80%
Sunday
Thunderstorms
72°/ 48° 22°/
60%
Monday
Rain Showers
75°/ 48° 24°/
20%
Tuesday
Rain Showers
78°26°
20%

Day: Partly cloudy. A slight chance of showers this morning. Highs in the upper 80s. South winds 10 to 20 mph with gusts up to 30 mph. Chance of rain 20 percent.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. North winds 10 to 15 mph with gusts up to 25 mph.

Harrison, NE

Today
Sunny
85°/ 52° 29°/ 11°
0%
Thursday
Thunderstorms
72°/ 52° 22°/ 11°
90%
Friday
Sunny
78°/ 52° 26°/ 11°
40%
Sat-Sat Night
Thunderstorms
75°24°
70%
Sunday
Rain Showers
72°22°
50%
Sun Night
Cloudy
45°
0%
Wednesday
Cloudy
45°
0%
Tuesday
Cloudy
45°
0%

Day: Mostly sunny and breezy, warmer with highs in the mid 80s. South winds 20 to 25 mph with gusts up to 40 mph, diminishing to 10 to 15 mph this afternoon.

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

Box Elder, SD

Today
Rain Showers
85°/ 52° 29°/ 11°
20%
Thursday
Thunderstorms
75°/ 55° 24°/ 13°
90%
Friday
Mostly Cloudy
75°/ 52° 24°/ 11°
50%
Saturday
Rain Showers
72°/ 52° 22°/ 11°
70%
Sunday
Thunderstorms
72°/ 48° 22°/
70%
Monday
Rain Showers
72°/ 48° 22°/
20%
Tuesday
Cloudy
78°26°
0%

Day: Partly cloudy. A slight chance of showers this morning. Highs in the mid 80s. South winds 10 to 20 mph with gusts up to 35 mph. Chance of rain 20 percent.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. North winds 10 to 15 mph with gusts up to 25 mph.

Folsom, SD

Today
Cloudy
88°/ 52° 31°/ 11°
0%
Thursday
Thunderstorms
72°/ 55° 22°/ 13°
90%
Friday
Cloudy
75°/ 52° 24°/ 11°
60%
Saturday
Thunderstorms
72°/ 50° 22°/ 10°
80%
Sunday
Thunderstorms
72°/ 48° 22°/
70%
Monday
Rain Showers
75°/ 48° 24°/
20%
Tuesday
Cloudy
78°26°
0%

Day: Partly cloudy. Highs in the upper 80s. South winds 10 to 20 mph with gusts up to 35 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. North winds 10 to 15 mph with gusts up to 30 mph.

Chadron, NE

Today
Sunny
85°/ 55° 29°/ 13°
0%
Thursday
Thunderstorms
75°/ 55° 24°/ 13°
90%
Friday
Mostly Cloudy
78°/ 55° 26°/ 13°
40%
Saturday
Rain Showers
75°/ 50° 24°/ 10°
70%
Sunday
Thunderstorms
72°22°
50%
Sun Night
Cloudy
48°
0%
Wednesday
Cloudy
48°
0%
Tuesday
Cloudy
48°
0%

Day: Mostly sunny and breezy, warmer with highs in the mid 80s. South winds 15 to 25 mph. Gusts up to 40 mph this morning.

Night: Mostly cloudy. Lows in the mid 50s. East winds 5 to 10 mph.

Bill, WY

Today
Rain Showers
82°/ 50° 28°/ 10°
40%
Thursday
Rain Showers
72°/ 52° 22°/ 11°
90%
Friday
Sunny
80°/ 50° 27°/ 10°
60%
Saturday
Thunderstorms
72°/ 45° 22°/
70%
Sunday
Rain Showers
70°/ 42° 21°/
40%
Monday
Sunny
75°/ 45° 24°/
0%

Day: Mostly sunny. Scattered showers this afternoon. Highs in the lower 80s. Southwest winds 10 to 15 mph, becoming northwest this afternoon. Gusts up to 30 mph. Chance of rain 40 percent.

Night: Mostly cloudy. Lows around 50. Northeast winds 10 to 15 mph.

Pine Ridge, SD

Today
Cloudy
85°/ 52° 29°/ 11°
0%
Thursday
Thunderstorms
75°/ 55° 24°/ 13°
90%
Friday
Cloudy
75°/ 52° 24°/ 11°
40%
Saturday
Thunderstorms
72°/ 48° 22°/
70%
Sunday
Thunderstorms
72°/ 45° 22°/
60%
Monday
Rain Showers
75°/ 48° 24°/
20%
Tuesday
Rain Showers
78°26°
20%

Day: Partly cloudy. Highs in the mid 80s. South winds 10 to 20 mph with gusts up to 35 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. Northeast winds 5 to 10 mph. Gusts up to 20 mph after midnight.

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