Post Falls, Idaho 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

460
FXUS66 KOTX 300105
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
605 PM PDT Mon Jun 29 2026

.KEY MESSAGES...

- Thunderstorms in northeast WA and north ID Monday
  afternoon and evening.

- Warmer and drier for the end of the week

&&

.SYNOPSIS...
Through Monday evening, scattered showers and thunderstorms are
expected over north ID and northeast WA. Cooler than normal
conditions continue through the week with isolated mountain
shower activity. By the weekend, a ridge will build bringing
temperatures back up to normal in time for the holiday weekend.

&&

.DISCUSSION...
Tonight and Tuesday: The region is being influenced by a long
wave trough pattern along the Pacific coastline with a Low over
central MT. Wrap around bands, from the Low, will continue to
bring showers and isolated thunderstorms to portions of the
region. Cape values are in the 500 plus J/KG. The best chances
are North ID and Northeast WA with a 20-30% chance through 11 PM
PDT. Areas from the Okanogan Valley, north of hwy 2, and to the
ID/MT border have a 10-20% chance. Main impacts will gusty
winds, infrequent lightning, brief heavy rain, and small hail.
Outside of thunderstorms, these areas have at least a 50%
probability of a tenth or greater rainfall. The threat will
decrease has the Low continues to drift East overnight. Tuesday
will similar to Monday but area will be drier and more stable.
Early stratus clouds through the morning and clearing by the
afternoon. Instability is weaker with only 200-300 J/kg of Cape
along the northern mountains. An isolated thunderstorm is
possible but chances are less than 15% for the afternoon and
early evening. Afternoon winds will continue to breezy through
the Cascades Gaps with sustained in the teens and gusts in the
upper 20s and low 30s mph. Highs will be in the upper 60s and
low 80s. Overnight lows will be in the 50s tonight. The drier
air will cool Tuesday night with lows in the 40s.

Wednesday through Friday: The trough pattern will continue
through the period but a off shore High will begin to nudge into
the region. It will push the moisture further North and promote
a warming, drying trend through the end of the week. Clusters
show a quick moving trough moving the region Friday afternoon.
It brings increased thunder chances(5-10%) to the Inland
Northwest. It will be something to keep an eye for the start of
the upcoming holiday weekend. Any chance of precip will be over
the mountains with little to no accumulation expected. Afternoon
winds will continue to be breezy through the Cascade Gaps.
Highs will be in the 70s to low 80s on Wednesday and upper 70s
and 80s by Friday. Overnight lows will be in the 40s to low 50s.

Saturday and Sunday: Weak ridging pattern begins to build into
the region. It will bring a dry, warm weekend for the 4th. Sky
conditions will generally cloud free. For those outdoors,
remember to hydrate and prep for sunny conditions. Highs climb
into the 80s and low 90s. Overnight lows will be in the 50s to
low 60s. /JDC

&&

.AVIATION...
18Z TAFs: Showers and thunderstorms are slowly drifting south
of the northeastern WA mountains. Debris clouds and a few
showers may survive as they approach GEG/SFF/COE, particularly
COE, over the next few hours. Winds with these showers will be
gusty and variable through the evening hours before relaxing
overnight. The residual low level moisture and debris clouds
will result in MVFR conditions (50-80%) but that likely will not
impact the TAF sites through early morning Tuesday. The
exception will be COE will a lower stratus deck (MVFR) may
develop and linger over north Idaho through the morning hours.
Elsewhere expect broken mid level deck to lift during the
afternoon and breezy southwest winds to increase once again. A
frontal boundary will bring a wind shift from southwest to west
as it tracks across the Columbia Basin Tuesday afternoon.

FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS:
High confidence VFR conditions persist through the TAF period at
LWS/EAT/MWH. Moderate confidence of VFR conditions at
GEG/SFF/COE PUW overnight and early Tuesday morning depending on
residual low level moisture. /AB
-----------------------

Confidence descriptors:
Low - Less than a 30 percent chance
Moderate - 30 to 70 percent chance
High - Greater than a 70 percent chance

For additional probabilistic information for NWS Spokane
airports, please refer to the Aviation Dashboard on our
webpage: https:/www.weather.gov/otx/avndashboard

&&

.Preliminary Point Temps/PoPs...
Spokane        51  72  49  73  48  75 /  60  40   0   0   0   0
Coeur d`Alene  50  70  50  72  49  74 /  70  60   0   0   0   0
Pullman        48  69  43  69  43  72 /  20  20   0   0   0   0
Lewiston       51  77  52  78  52  81 /  20  20   0   0   0   0
Colville       52  71  44  74  44  76 /  90  80  30  10   0   0
Sandpoint      50  67  48  71  47  72 /  90  80  10   0   0   0
Kellogg        48  68  47  71  47  72 /  70  60   0   0   0   0
Moses Lake     54  81  48  79  48  80 /  20   0   0   0   0   0
Wenatchee      58  79  54  78  54  80 /   0   0   0   0   0   0
Omak           57  79  53  79  51  80 /  60  30  30  10  10   0

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
WA...None.
ID...None.

&&

$$