Claude, Oregon Weather Forecast Discussion

717
FXUS65 KBOI 240238
AFDBOI
Area Forecast Discussion
National Weather Service Boise ID
838 PM MDT Tue Sep 23 2025
.DISCUSSION...An upper-level ridge of high pressure will
maintain clear skies and above-normal temperatures through at
least Wednesday. Temperatures are forecast to reach the mid-80s
on Wednesday, peaking on Thursday with highs in the upper 80s to
low 90s across the lower valleys. Fortunately, overnight lows
will drop to near-normal temperatures due to decreasing
daylight. The ridge is expected to weaken on Thursday as a dry
cold front passes across Washington and northern Idaho. This
will bring temperatures closer to normal and increase west-to-
northwest winds.
Smoke from area fires will likely become trapped in the mountain
valleys of Adams and Weiser counties Wednesday morning, but this
should mix out in the afternoon. No significant forecast updates
are needed at this time.
&&
.AVIATION...Skies clear and VFR. Surface winds: E-SE up to 10 kt.
Winds aloft at 10kft MSL: E-SE 5-10 kt.
KBOI...Skies clear and VFR. Surface winds: light and variable this
evening, becoming SE under 10 kt by Wed/06z.
&&
.PREV DISCUSSION...
SHORT TERM...Tonight through Thursday night...A ridge of high
pressure will remain over the region through the short term.
Breezy southeast winds expected during the afternoons on Tuesday
and Wednesday through the I-84 corridor in Baker County, and
the Treasure Valley to the Magic Valley. Elsewhere, breezy
southeast winds mainly on the ridgetops during the day with
light winds at night. Temperatures warm to around 10 degrees
above normal on Wednesday and continue through Thursday. A dry
cold front moves across WA and northern ID Thursday and brings
increased west-northwest winds late Thursday.
LONG TERM...Friday through Tuesday...Broad ridging behind a
closed low over CA/NV is expected to slowly build into the upper
Great Basin and SE OR/SW ID through Friday and into the
weekend, returning a slight warming trend. Peak valley
temperatures are expected to climb back up into the mid 80s
Saturday and Sunday. The closed low off CA/NV is expected to
stall throughout Saturday before moving NE`ward as a longwave
trough on Sunday, steering some monsoonal moisture off the Four
Corners region into the area. This will favor isolated
showers/thunderstorms, mainly over higher elevations and the
lower Magic Valley, late Sunday into Monday. A strong upper low
over the Gulf of Alaska is expected to dig into the Northwest
coast through Monday and Tuesday, bringing higher chances for
showers/thunderstorms throughout the area early next week.
Considerable uncertainty remains over the timing and intensity
of the precipitation carried over by this incoming trough.
&&
.BOI WATCHES/WARNINGS/ADVISORIES...
ID...None.
OR...None.
&&
$$
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DISCUSSION...JDS
AVIATION.....NF
SHORT TERM...KA
LONG TERM....JY

NWS BOI Office Area Forecast Discussion