Dewey, MT weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
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 · 81°F average high
- Decembercoldest month · 8°F average low
- 11.3 inprecipitation per year · 287 mm
- 15.2 insnowfall per year · 39 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 DIVIDE, MT US (USC00242421), adjusted for the elevation of Dewey.
Dewey weather month by month
Sunrise and sunset in Dewey through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 8:06 AM | 5:15 PM | 9 h 8 min |
| February | 7:31 AM | 5:59 PM | 10 h 28 min |
| March | 7:41 AM | 7:38 PM | 11 h 57 min |
| April | 6:43 AM | 8:19 PM | 13 h 36 min |
| May | 5:57 AM | 8:57 PM | 15 h 0 min |
| June | 5:39 AM | 9:24 PM | 15 h 45 min |
| July | 5:54 AM | 9:19 PM | 15 h 25 min |
| August | 6:30 AM | 8:41 PM | 14 h 10 min |
| September | 7:08 AM | 7:44 PM | 12 h 35 min |
| October | 7:47 AM | 6:47 PM | 11 h 0 min |
| November | 7:30 AM | 5:02 PM | 9 h 32 min |
| December | 8:04 AM | 4:49 PM | 8 h 45 min |
Times for the 15th of each month, local time (America/Denver).
What is the weather like in Dewey?
Dewey has a cold semi-arid climate. The warmest month is July, with an average high of 81°F (27°C), and the coldest is December, with average lows of 8°F (-13°C).
It gets about 11.3 inches (287 mm) of precipitation a year. The wettest month is June and the driest is January. Snow is common: about 15 inches fall in an average year.
The best time to visit Dewey is June to September. At 5,515 ft of elevation, nights are cool even in summer. 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.
More about Dewey
Weather in towns near Dewey
Questions about the weather in Dewey
What is the hottest month in Dewey?
July, with an average high of 81°F (27°C).
What is the coldest month in Dewey?
December, with an average low of 8°F (-13°C).
How much does it rain in Dewey?
About 11.3 inches (287 mm) a year; the wettest month is June.
Does it snow in Dewey?
Yes, about 15 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?
Cold semi-arid (Köppen BSk).
What is the weather like in Dewey in November?
Highs average 41°F and lows 16°F, with about 0.5 inches of precipitation.
What time is sunrise in Dewey?
Around 7:30 AM in mid-November, and sunset around 5:02 PM. Today’s exact times are shown above.
Where does this Dewey weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Dewey.
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