Bend, Oregon 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

064
FXUS66 KPDT 240525
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
1025 PM PDT Mon Jun 23 2025

Updated Aviation Discussion

.AVIATION...06z TAFs...VFR conditions expected. Skies will remain
mostly clear overnight, save for some sct mid to high clouds for
sites along the Cascades, before a weak front moving through the
forecast area tomorrow afternoon makes for bkn-ovc cigs around 10
kft. No rain is expected with this front. Winds will be terrain-
driven overnight, shifting more W/NW with the front tomorrow, with
winds gusting around 20 kts at DLS. Evans/74

&&

PREV DISCUSSION... /issued 157 PM PDT Mon Jun 23 2025/

SHORT TERM...Today through Wednesday...Warm, benign weather
persists for the duration of this term. High temperatures will
steadily increase into the 80s and 90s through tomorrow. but cools
by few degrees Wednesday into the 70s and 80s. And with temps
remaining relatively warm, this decreases RH values to 15-30% thus
making dry conditions last longer. This will bring moderate Heat
Risk (level 2 of 4) over the Columbia Basin for Tuesday, given
the low RHs and warming temps. However, critical conditions will
not be met for this term.

As the upper level trough remains over the forecast area, light
showers could develop through Tuesday over the upper crest of the WA
Cascades before expanding across the remaining crest of the Cascades
Wednesday. Raw ensembles suggest a 30-60% probability for WA
Cascades into tomorrow and <20% prob for OR Cascades Wednesday. Due
to warm and dry conditions, there will not be enough moisture
support.

With the ongoing westerly flow, winds will be slightly breezy up to
15 mph through tomorrow across majority of the forecast area before
steadily increasing to 25 mph tomorrow night into Wednesday at the
Cascade Gaps. The raw ensembles favor a 30-70% probability for gusts
at 30-35 mph over the Columbia River Gorge Wednesday afternoon into
evening, so no concerns for wind advisories at this time. Feaster/97

LONG TERM...Thursday through Monday...Slight chance (<30%) of light
showers for Thursday along mainly the WA Cascades. Otherwise, the
warm, dry weather prevails Friday and beyond. As this heat surges,
warm temperatures will continue trending into next week with RHs
gradually dropping below 35%. Sunday into Monday, temps may reach
into the 90s or higher with RHs at 15-25%. Confidence is 30-50%
for temps reaching up to 100 degrees Monday over the Columbia
Basin. Because of the excessive heat and dryness, Sunday and
Monday will be our warmest and driest days of this period. This
will also bring moderate Heat Risk across most of the forecast
area Sunday and Monday as well, along with portions of the Lower
Basin having pockets of major Heat Risk Monday. As of this time,
no critical conditions is expected.

Through Friday, the ongoing westerly flow will produce breezy to
locally windy conditions over the Cascade Gaps during afternoon and
early evening hours, particularly the Gorge. Chances are 30-50% for
the Gorge to have gusts up to 30 mph. Other than that, winds will
become light Friday night onwards. Feaster/97

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  54  93  60  84 /   0   0   0   0
ALW  58  91  64  84 /   0   0   0   0
PSC  54  94  61  89 /   0   0   0   0
YKM  56  91  58  85 /   0   0   0   0
HRI  55  95  63  87 /   0   0   0   0
ELN  54  89  58  79 /  10  10   0   0
RDM  44  87  48  82 /   0   0   0   0
LGD  48  85  55  83 /   0  10   0  10
GCD  48  87  53  85 /   0   0   0   0
DLS  60  89  61  78 /   0   0   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...None.
WA...None.
&&

$$

SHORT TERM...97
LONG TERM....97
AVIATION...74