West Valley City, Utah 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

086
FXUS65 KSLC 090423
AFDSLC

Area Forecast Discussion
National Weather Service Salt Lake City UT
1023 PM MDT Fri May 8 2026

.KEY MESSAGES...

- Near record to potentially record breaking heat will develop
  this weekend into early next week, persisting through mid-week.

- Widespread anomalous heat, single-digit daytime RH, and poor
  overnight humidity recoveries developing Sunday and persisting
  through at least Tuesday.

- Next chance of precipitation arrives midweek as a trough
  approaches from the PNW.

&&

.DISCUSSION...Another grazing shortwave will keep temperatures on
the milder side, relative to the upcoming pattern. Temperatures
tomorrow will run just a couple of degrees cooler than today.
There is little moisture to work with, but an isolated mountain
shower can`t be ruled out during the afternoon with this shortwave
passage. Otherwise, temperatures start to dramatically warm on
Sunday as a ridge builds into the area. The heat peaks Monday and
Tuesday with temperatures in the upper 80s to low 90s for most
valleys and near 100 degrees across lower Washington county.

There are a couple of scenarios of how the pattern will evolve by
the middle of next week. The first scenario (~36% of ensemble
members) has a trough moving into the PNW will shift the ridge
axis east and bring some cooler temperatures and the chance for
precipitation. Moisture does increase ahead of this trough as
southerly flow is enhanced from the ridge to our southeast and
trough to our northwest will help pull moisture from the Baja into
Utah. This moisture will interact with the approaching trough to
develop some convection across the area by the middle of next
week. The second scenario (64% of ensemble members) keeps a
cutoff low off the California coast with mostly dry conditions,
but still a slight cooling effect from the trough axis shifting
east.


&&

.AVIATION...KSLC...VFR conditions continue through the period under
mostly clear skies. Winds may become more north to northwesterly
between 06-10z; otherwise, light southeasterly winds prevail through
~16z, increasing out of the northwest thereafter.

.REST OF UTAH AND SOUTHWEST WYOMING...VFR conditions prevail through
the TAF period for all regional terminals. Light, terrain driven
winds persist overnight for all regional terminals, with post-
frontal northwesterly winds developing late morning to early
afternoon across the region.

&&

.FIRE WEATHER...High pressure will continue to build into the region
through Saturday, bringing near record temperatures and very dry
conditions. By Sunday, many areas will see low teens to single
digit humidities with poor to very poor overnight recoveries.

There is little relief in this pattern through at least
Tuesday as peak heating is expected Monday and Tuesday. There is
~35% chance in convection returning by Wednesday as temperatures
start to gradually cool due to the ridge axis moving east.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...None.
WY...None.
&&

$$

PUBLIC...Mahan
AVIATION...Whitlam
FIRE WEATHER...Mahan

For more information from NOAA`s National Weather Service visit...
http://weather.gov/saltlakecity