Dewey, SD
Unincorporated community in Fall River County, South Dakota
Dewey is a small unincorporated community in Fall River County, South Dakota. It is 19.0 miles SE of Dudley, the nearest town.
Dewey at a glance
- State
- South Dakota
- County
- Fall River County
- Nearest town
- Dudley (19.0 mi)
- Time zone
- America/Denver
- Coordinates
- 43.5308, -104.0406
Weather in Dewey now
Loading the National Weather Service forecast…
Dewey weather by the hour
Dewey weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Dewey.
This week in Dewey
Sunrise, sunset and moon in Dewey
What is the weather usually like in Dewey?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 85°F average high
- Januarycoldest month · 11°F average low
- 17.7 inprecipitation per year · 451 mm
- 35.3 insnowfall per year · 90 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Dewey: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station EDGEMONT 23 NNW, SD US (USC00392565), adjusted for the elevation of Dewey.
Dewey weather month by month
Sunrise and sunset in Dewey through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:24 AM | 4:47 PM | 9 h 22 min |
| February | 6:52 AM | 5:28 PM | 10 h 35 min |
| March | 7:06 AM | 7:03 PM | 11 h 57 min |
| April | 6:11 AM | 7:40 PM | 13 h 29 min |
| May | 5:29 AM | 8:15 PM | 14 h 46 min |
| June | 5:12 AM | 8:40 PM | 15 h 28 min |
| July | 5:27 AM | 8:36 PM | 15 h 9 min |
| August | 5:59 AM | 8:01 PM | 14 h 1 min |
| September | 6:34 AM | 7:07 PM | 12 h 33 min |
| October | 7:09 AM | 6:14 PM | 11 h 5 min |
| November | 6:48 AM | 4:32 PM | 9 h 44 min |
| December | 7:20 AM | 4:22 PM | 9 h 1 min |
Times for the 15th of each month, local time (America/Denver).
What is the weather like in Dewey?
Dewey has a warm-summer humid continental climate. The warmest month is July, with an average high of 85°F (29°C), and the coldest is January, with average lows of 11°F (-12°C).
It gets about 17.7 inches (451 mm) of precipitation a year. The wettest month is June and the driest is January. Snow is common: about 35 inches fall in an average year.
The best time to visit Dewey is June to September. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
Webcams near Dewey
The closest live webcam is Mule Creek Junction › South: US 85 - South, 13.9 miles SW of Dewey.
Webcams: Windy.com. Distances in a straight line from Dewey.
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Map of Dewey, SD
Tap any road on the map to see it in Street View below. Map: © OpenStreetMap contributors.
Dewey Street View
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Questions about Dewey
Where is Dewey, SD?
Dewey is an unincorporated community in Fall River County, South Dakota, 19.0 miles SE of Dudley.
What county is Dewey in?
Dewey is in Fall River County, South Dakota.
What is the nearest town to Dewey?
Dudley, 19.0 miles away.
Are there webcams near Dewey?
Yes. The closest is Mule Creek Junction › South: US 85 - South, 13.9 miles away.
What is the hottest month in Dewey?
July, with an average high of 85°F (29°C).
What is the coldest month in Dewey?
January, with an average low of 11°F (-12°C).
How much does it rain in Dewey?
About 17.7 inches (451 mm) a year; the wettest month is June.
Does it snow in Dewey?
Yes, about 35 inches of snow fall in an average year.
When is the best time to visit Dewey?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Dewey have?
Warm-summer humid continental (Köppen Dfb).
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