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Weather Conditions for Dewey, Utah : Grand County
Issued: 5:01 am MDT Oct 12, 2026 Latitude: 38.810263 Longitude: -109.3017828 View on Google Maps

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Columbus Day Tonight Tuesday Wednesday Thursday Friday Saturday Sunday
50% chance of thunderstorms on Columbus Day 70% chance of thunderstorms on Tonight 80% chance of thunderstorms on Tuesday 70% chance of thunderstorms on Wednesday Sunny on Thursday Sunny on Friday Sunny on Saturday Sunny on Sunday
High: 71°F Low: 49°F High: 64°F High: 59°F High: 68°F High: 69°F High: 70°F High: 71°F
  Low: 42°F Low: 40°F Low: 41°F Low: 43°F Low: 44°F  
Thunderstorms Thunderstorms Thunderstorms Thunderstorms Sunny Sunny Sunny Sunny

Hourly forecast

Dewey, ut · Next 24 hours · Eastern time (EST/EDT)

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Current Conditions at
MOAB - (KCNY)
59°
Mostly Cloudy
as of 4:53 AM MDST
Rel. Humidity: 72%
Dew Point: 50°F
Visibility: 10 Miles
Pressure: 29.83 in.
Flight Rule: VFR
Wind Data
7 MPH
110° East
Cloud Level(s): Few at 8500ft, Broken at 12000ft
Current Conditions at
GRAND JUNCTION - (KGJT)
57°
Cloudy
as of 4:53 AM MDST
Rel. Humidity: 71%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 29.88 in.
Flight Rule: VFR
Wind Data
17 MPH
Gust: 28 MPH
130° Southeast
Cloud Level(s): Solid Overcast at 7500ft
Current Conditions at
MONTROSE - (KMTJ)
61°
Partly Cloudy
as of 4:53 AM MDST
Rel. Humidity: 44%
Dew Point: 39°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
7 MPH
220° Southwest
Cloud Level(s): Scattered at 10000ft
Current Conditions at
PRICE - (KPUC)
52°
Cloudy
as of 4:53 AM MDST
Rel. Humidity: 93%
Dew Point: 50°F
Visibility: 10 Miles
Pressure: 29.88 in.
Flight Rule: VFR
Wind Data
7 MPH
080° East
Cloud Level(s): Broken at 7500ft, Solid Overcast at 9000ft
50% chance of thunderstorms Columbus Day Columbus Day... A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 71. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 35 mph.

70% chance of thunderstorms Tonight Tonight... A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 9pm. Mostly cloudy, with a low around 49. Southwest wind 10 to 15 mph becoming south southeast after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 70%.

80% chance of thunderstorms Tuesday Tuesday... Showers and possibly a thunderstorm. High near 64. South wind 10 to 15 mph becoming west southwest in the morning. Chance of precipitation is 80%.

80% chance of thunderstorms Tuesday Night Tuesday Night... A chance of showers and thunderstorms before midnight, then showers and possibly a thunderstorm between midnight and 3am, then showers after 3am. Low around 42. South wind 5 to 10 mph becoming light south southwest in the evening. Chance of precipitation is 80%.

70% chance of thunderstorms Wednesday Wednesday... Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 59. Calm wind becoming west around 5 mph in the morning. Chance of precipitation is 70%.

30% chance of rain Wednesday Night Wednesday Night... A 30 percent chance of showers, mainly before midnight. Partly cloudy, with a low around 40.

Sunny on Thursday Thursday... Sunny, with a high near 68. Breezy.

Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 41.

Sunny on Friday Friday... Sunny, with a high near 69.

Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 43.

Sunny on Saturday Saturday... Sunny, with a high near 70.

Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 44.

Sunny on Sunday Sunday... Sunny, with a high near 71.

Utah's Warnings, Watches, and AdvisoriesUtah's Watches, Warnings, and Advisories

Sun Almanac for Dewey, Utah
Astronomical Sunrise 19:56 AM?Astronomical sunrise occurs when the Sun is 18° below the horizon and the sky begins to brighten from a completly darkened state.
Nautical Sunrise 20:26 AM?Nautical sunrise (or nautical dawn) is the precise moment when the sun's center is 12° below the horizon in the morning. It marks the beginning of nautical twilight, allowing pilots/mariners to see the horizon.
Civil Sunrise 20:57 AM?Civil sunrise is the moment in the morning when the sun's center is 6° below the horizon. It marks the start of morning civil twilight, providing enough natural light for most, outdoor activities without artificial lighting. It typically occurs roughly 20-30 minutes before actual sunrise.
Sunrise 21:24 AM?Sunrise (or sunup) is the moment when the upper rim of the Sun appears on the horizon in the morning. It marks the end of the twilight phase, often accompanied by distinct atmospheric colors.

Daylight: -1 Hours 19 Minutes?Daylight hours are the period of time between local sunrise and sunset, representing the daily portion of sunlight. These hours change in length based on season, Earth's tilt, and latitude.

Sunset 08:43 PM?The sunset is defined in astronomy as the moment the upper limb of the Sun disappears below the horizon. It marks the end of daylight and is often accompanied by distinct atmospheric colors. It also signals the beginning of twilight.
Civil Sunset 09:10 PM?Civil sunset (or evening civil twilight) occurs when the center of the sun is 6° below the horizon, marking the end of the brightest twilight phase. It typically occurs roughly 20-30 minutes after sunset, providing enough light for most outdoor activities to continue without artificial light.
Nautical Sunset 09:41 PM?Nautical sunset occurs when the sun's center is 12° below the horizon, marking the end of nautical twilight. This phase, following civil twilight, allows the horizon to remain visible, enabling mariners to take accurate star sights for navigation. The sky is dark, but some ambient light remains
Astronomical Sunset 10:12 PM?Astronomical sunrise occurs when the Sun drops to 18° below the horizon. This causes the sky to enter a completly darkened state.

Civil Rise to Set: 0 Hours 13 Minutes
Nautical Rise to Set: 1 Hours 15 Minutes
Astro Rise to Set: 2 Hours 16 Minutes

Click for yearly Sun Almanac for Dewey
Moon Almanac for Dewey, Utah
Moon Phase: Waxing Crescent
Moon Illumination: 4%
Moon Age: 1.80 Days
Moon is currently below the horizon
Distance from Moon to Earth: 246,524 miles
Upcoming Lunar Events for
Dewey:
Next EventEvent TimeIllum

Moonrise:11:37 am Mon4.1%
High Moon:04:37 pm Mon5.0%
Moonset:09:30 pm Mon5.9%
New Moon: Sat Oct 10
First Quarter: Sun Oct 18
Full Moon: Mon Oct 26
Last Quarter: Sun Nov 1
New Moon: Mon Nov 9
Click for Monthly Moon Almanac