No Watches or Warnings for Grafton
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Weather Conditions for Grafton, Utah : Washington County
Issued: 12:31 pm MDT Sep 3, 2026 Latitude: 37.167205 Longitude: -113.0799425 View on Google Maps

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Tonight Friday Saturday Sunday Labor Day Tuesday Wednesday Thursday
Mostly Clear on Tonight Sunny on Friday Sunny on Saturday 60% chance of thunderstorms on Sunday Mostly Sunny on Labor Day Sunny on Tuesday 10% chance of thunderstorms on Wednesday 20% chance of thunderstorms on Thursday
Low: 65°F High: 91°F High: 90°F High: 83°F High: 88°F High: 92°F High: 93°F High: 91°F
Low: 65°F Low: 67°F Low: 66°F Low: 64°F Low: 68°F Low: 69°F  
Mostly Clear Sunny Sunny Thunderstorms Mostly Sunny Sunny Thunderstorms Thunderstorms
Current Conditions at
ST GEORGE - (KSGU)
75°
Clear
as of 5:56 AM MDST
Rel. Humidity: 53%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 29.96 in.
Flight Rule: VFR
Wind Data
8 MPH
120° Southeast
Cloud Level(s): Clear
Current Conditions at
CEDAR CITY - (KCDC)
68°
Clear
as of 5:53 AM MDST
Rel. Humidity: 60%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 30.11 in.
Flight Rule: VFR
Wind Data
15 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
BRYCE CANYON - (KBCE)
50°
Mostly Clear
as of 5:53 AM MDST
Rel. Humidity: 93%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 30.29 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 3000ft, Few at 4000ft
Current Conditions at
MILFORD - (KMLF)
63°
Clear
as of 5:52 AM MDST
Rel. Humidity: 72%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 30.07 in.
Flight Rule: VFR
Wind Data
7 MPH
190° South
Cloud Level(s): Clear
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 65. Southwest wind 8 to 13 mph becoming east after midnight.

Sunny on Friday Friday... Sunny, with a high near 91. East wind around 15 mph becoming south southwest in the afternoon.

Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 65. Southwest wind 9 to 13 mph becoming east southeast after midnight.

Sunny on Saturday Saturday... Sunny, with a high near 90. East wind 9 to 11 mph becoming southwest in the afternoon.

40% chance of thunderstorms Saturday Night Saturday Night... A slight chance of showers and thunderstorms before midnight, then a chance of showers between midnight and 3am, then a chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 67. Southwest wind 7 to 10 mph becoming east southeast after midnight. Chance of precipitation is 40%.

60% chance of thunderstorms Sunday Sunday... A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 83. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

40% chance of thunderstorms Sunday Night Sunday Night... A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 66.

Mostly Sunny on Labor Day Labor Day... Mostly sunny, with a high near 88.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 64.

Sunny on Tuesday Tuesday... Sunny, with a high near 92.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 68.

10% chance of thunderstorms Wednesday Wednesday... A slight chance of showers and thunderstorms. Mostly sunny, with a high near 93.

20% chance of thunderstorms Wednesday Night Wednesday Night... A chance of showers and thunderstorms. Partly cloudy, with a low around 69.

20% chance of thunderstorms Thursday Thursday... A chance of showers and thunderstorms. Partly sunny, with a high near 91.

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Sun Almanac for Grafton, Utah
Astronomical Sunrise 05:48 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 06:19 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 06:50 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 07:16 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: 12 Hours 23 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 7:39 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 8:05 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 8:35 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 9:06 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: 13 Hours 15 Minutes
Nautical Rise to Set: 14 Hours 16 Minutes
Astro Rise to Set: 15 Hours 18 Minutes

Click for yearly Sun Almanac for Grafton
Moon Almanac for Grafton, Utah
Moon Phase: Waxing Crescent
Moon Illumination: 28%
Moon Age: 5.28 Days
Moon is currently below the horizon
Distance from Moon to Earth: 249,777 miles
Upcoming Lunar Events for
Grafton:
Next EventEvent TimeIllum

Moonrise:01:06 pm Wed30.0%
High Moon:05:51 pm Wed31.7%
Moonset:10:31 pm Wed33.5%
New Moon: Thu Sep 10
First Quarter: Fri Sep 18
Full Moon: Sat Sep 26
Last Quarter: Sat Oct 3
New Moon: Sat Oct 10
Click for Monthly Moon Almanac