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Logan, Utah 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Logan UT
National Weather Service Forecast for: Logan UT
Issued by: National Weather Service Salt Lake City, UT
Updated: 8:31 pm MDT Jul 25, 2025
 
Overnight

Overnight: Partly cloudy, with a low around 61. Light southeast wind.
Partly Cloudy

Saturday

Saturday: Patchy smoke between 9am and noon. Mostly cloudy, then gradually becoming sunny, with a high near 91. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Patchy Smoke
then Mostly
Sunny
Saturday
Night
Saturday Night: Mostly clear, with a low around 58. Southwest wind 5 to 9 mph becoming east southeast after midnight.
Mostly Clear

Sunday

Sunday: Sunny, with a high near 92. Light and variable wind becoming southwest 5 to 9 mph in the afternoon.
Sunny

Sunday
Night
Sunday Night: Mostly clear, with a low around 59. Southwest wind 5 to 8 mph becoming calm  in the evening.
Mostly Clear

Monday

Monday: Sunny, with a high near 95.
Sunny

Monday
Night
Monday Night: Mostly clear, with a low around 61.
Mostly Clear

Tuesday

Tuesday: Sunny, with a high near 96.
Sunny

Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 60.
Partly Cloudy

Lo 61 °F Hi 91 °F Lo 58 °F Hi 92 °F Lo 59 °F Hi 95 °F Lo 61 °F Hi 96 °F Lo 60 °F

 

Overnight
 
Partly cloudy, with a low around 61. Light southeast wind.
Saturday
 
Patchy smoke between 9am and noon. Mostly cloudy, then gradually becoming sunny, with a high near 91. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Saturday Night
 
Mostly clear, with a low around 58. Southwest wind 5 to 9 mph becoming east southeast after midnight.
Sunday
 
Sunny, with a high near 92. Light and variable wind becoming southwest 5 to 9 mph in the afternoon.
Sunday Night
 
Mostly clear, with a low around 59. Southwest wind 5 to 8 mph becoming calm in the evening.
Monday
 
Sunny, with a high near 95.
Monday Night
 
Mostly clear, with a low around 61.
Tuesday
 
Sunny, with a high near 96.
Tuesday Night
 
Partly cloudy, with a low around 60.
Wednesday
 
Sunny, with a high near 95.
Wednesday Night
 
Partly cloudy, with a low around 61.
Thursday
 
Mostly sunny, with a high near 92.
Thursday Night
 
Partly cloudy, with a low around 59.
Friday
 
Sunny, with a high near 91.

 

Forecast from NOAA-NWS for Logan UT.

Weather Forecast Discussion
784
FXUS65 KSLC 252135
AFDSLC

Area Forecast Discussion
National Weather Service Salt Lake City UT
335 PM MDT Fri Jul 25 2025

.SYNOPSIS...Critical fire weather conditions due to gusty winds
and low relative humidity will affect much of Utah Saturday.
Smoke, primarily from a wildfire in northern Arizona, will
continue to track into southern and eastern portions of Utah
through the weekend.

&&

.SHORT TERM (Through 12Z/6AM Sunday)...A southwest synoptic flow
is in place throughout southwest Wyoming and Utah. This is
primarily due to a weak shortwave trough near San Francisco and
Oakland, CA. A powerful ridge of high pressure from the southeast
U.S. into the plains is also contributing. This has advected very
dry conditions in, with relative humidity in the single digits
throughout most of southwest Wyoming and Utah. Although with that
are gusts in excess of 20 mph.

The southwest winds have advected wildfire smoke from the Dragon
Bravo fire in northern Arizona into southeast Utah. The dense
smoke will continue for this portion of Utah as southwest flow
lasts through the weekend.

Relative humidity will be similar Saturday, while winds will
increase as the shortwave trough to the west lifts northeast. This
will add roughly 5-10 mph on top of the gusts from Friday. The
strongest winds will be in southwest Wyoming and roughly the
southern half of Utah, with gusts around 30 mph. The combination
will result in critical fire weather conditions.

While the lifting trough will be out of the area Sunday, southwest
synoptic flow will continue with similar single digit minimum
relative humidity. Winds will be slightly lighter than Saturday,
but higher fire danger will continue.

.LONG TERM (After 12Z/6AM Sunday)...There is about a 50/50 split
in the ensemble system members between increasing mid-level
moisture reaching Utah by Tuesday, versus largely shunting any
substantial moisture increase to the east into Colorado. Something
to continue to monitor as a longer duration without precipitation
would worsen drought and fire conditions.

&&

.AVIATION...SLC...VFR conditions prevail through the TAF period.
Winds remain breezy out of the south this afternoon, clocking more
southwesterly after 23z. Winds are expected to become light as they
transition to a typical southeasterly wind after 04z. Increasing
southwesterly flow aloft overnight is expected to bring increased
concentrations of vertically-integrated smoke to the area between
roughly 08-16z. This may yield some hazy skies and perhaps a
degradation in slantwise visibility.

.REST OF UTAH AND SOUTHWEST WYOMING...VFR conditions expected at all
regional terminals through the remainder of the period. Wildfire
smoke from the Monroe Canyon and Dragon Bravo fires will continue to
impact the airspace. Increased concentrations vertically-integrated
smoke are expected mainly along and east of the I-15 corridor
overnight into Saturday morning as southwesterly flow aloft
increases. Surface smoke concentrations will be highest across
southeast Utah, with VIS and CIG reductions to MVFR/IFR possible
this afternoon and evening in the vicinity of Lake Powell.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...Red Flag Warning from noon to 9 PM MDT Saturday for UTZ481>484-
     489-492>496-498.

WY...Fire Weather Watch from Saturday afternoon through Saturday
     evening for WYZ277.

&&

$$

SHORT TERM...Wilson
LONG TERM...Kruse
AVIATION...Whitlam
FIRE WEATHER...Wilson

For more information from NOAA`s National Weather Service visit...
http://weather.gov/saltlakecity
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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