Dewey County in numbers
- Coordinates
- 45.1566, -100.8720
- Region
- South Dakota
- Country
- United States, North America
- Capital
- Washington, D.C. — 2079 km away
- Same name
- 1 more places in the world share this name
What time is it in Dewey County, South Dakota, United States
Local time in Dewey County, South Dakota, United States is shown on this page, based on the America/Denver time zone (−7).
Dewey County, United States
Wednesday, 4 November 2026
UTC−7 · America/Denver
Local time in Dewey County
UTC−7 · no daylight saving time
Dewey County keeps America/Denver clock_time.
The sun today
Sunrise 6:27 AM Solar noon 11:28 AM Sunset 4:29 PM Daylight 10 h 01 min Night 13 h 59 min Civil twilight 5:57 AM – 5:00 PM
Weather in Dewey County right now
Loading the current weather…
Weather data by Open-Meteo, updated every 30 minutes.
Dewey County and its neighbours
Postal codes
- 57661 Whitehorse — 12.7 km away
Postal codes come from the free GeoNames dataset. Where a code is listed with a distance, it belongs to a nearby settlement — GeoNames spells that name differently from ours.
Largest cities in South Dakota
- Sioux Falls 171 544
- Rapid City 73 569
- Aberdeen 28 102
- Brookings 23 657
- Watertown 22 073
- Mitchell 15 669
Other places named Dewey County
- Dewey County Oklahoma, United States
Same time zone — America/Denver
Nearby places
- Ridgeview — 9.8 km
- Whitehorse — 12.7 km
- Yellowhorse Ford — 15.0 km
- Thatcher — 15.6 km
- Unorganized Territory Of South Dewey — 15.6 km
- La Plant — 17.3 km
Local time details for Dewey County
There is 1 postal code assigned to Dewey County.
Dewey County keeps the America/Denver zone, which is UTC−7. Whether summer time is observed: No.
Dewey County sees first light at 6:27 AM today and the sun sets at 4:29 PM. Daylight totals 10 h 01 min.
The clock in Dewey County matches the clock in nearby Ridgeview and Whitehorse.
Questions and answers
- Which time zone applies to Dewey County?
- The time zone that applies to Dewey County is America/Denver, with an offset of −7.
- Does the local schedule in Dewey County include a clock change?
- No.
- When does daylight end in Dewey County?
- Daylight ends at 4:29 PM.