The Summit at Snoqualmie
September 11 in the books — no snow ever recorded on this date (23 years in the books). All-time single day: 25.0″ on Mar 13, 2026.
Stoke today Sep 11
Next 24 hours forecast
Forecast
0.0″
best available forecast · as of Sep 11 06:57
NWS 0.0″ · Open-Meteo 0.0″
Last 24 hours measured
Station
0.0″
Olallie Meadows SNOTEL · 5.9 km · depth 0.0″ · rolling 24 h, observed Sep 10 18:00
Resort
—
resort isn’t reporting yet
Next 48 hours
10-day outlook
Forecast data: National Weather Service; Weather data by Open-Meteo.com (CC BY 4.0); Data from MET Norway (CC BY 4.0) — adapted by SnowAlert.
In the forecaster’s words
Overnight
Mostly cloudy. Low around 44, with temperatures rising to around 46 overnight. Northwest wind around 2 mph.
Today
Patchy fog between 9am and 10am. Mostly cloudy, with a high near 58. West wind around 2 mph.
Tonight
Cloudy, with a low around 47. North wind 0 to 3 mph.
Saturday
A chance of rain between noon and 2pm, then a chance of showers and thunderstorms between 2pm and 3pm, then a slight chance of showers and thunderstorms between 3pm and 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then rain likely. Mostly cloudy. High near 62, with temperatures falling to around 57 in the afternoon. Southeast wind around 3 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Saturday Night
Rain. Cloudy, with a low around 44. West wind 1 to 7 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Rain. Mostly cloudy, with a high near 50. West wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Forecast discussion SEW · Sep 11 03:00
Troughing developing over the area will continue into this weekend, bringing unsettled conditions and cooler temperatures to the region. Ridging looks to rebuild through the first half of next week for a slow warming trend.
Read the full discussion
000
FXUS66 KSEW 111000
AFDSEW
Area Forecast Discussion
National Weather Service Seattle WA
300 AM PDT Fri Sep 11 2026
.SYNOPSIS...
Troughing developing over the area will continue into this
weekend, bringing unsettled conditions and cooler temperatures
to the region. Ridging looks to rebuild through the first half
of next week for a slow warming trend.
&&
.SHORT TERM /TODAY THROUGH SUNDAY/...
An upper level trough over the region will continue to bring
onshore flow, cooler temperatures, and unsettled weather to
western Washington over the next couple of days. It'll deepen
today as its associated upper-low forms off the BC coast and
positions offshore by this evening. As a result, light shower
activity is possible over the Olympic Peninsula tonight but
conditions are to remain mostly dry across the area. Highs today
will top out in the 60s to near 70 F with overnight lows in the
50s.
The upper-low will traverse across the region on Saturday,
bringing widespread rain, showers and a 15-20% chance for
thunderstorms. The highest probability for lightning is over the
Olympics and southwest interior according to the NBM. It'll hang
around through Sunday with continued precipitation chances but
the thunderstorm threat will diminish with probabilities less
than 10%. High temperatures ranging between the 60s to near 70 F
and lows mainly in the 50s for both Saturday and Sunday.
&&
.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
Conditions are favored to trend drier Sunday night as the low
center crosses east of the Cascades. Can't rule out lingering
showers over the mountains. An upper level ridge will begin
to build offshore on Monday, introducing a slow warming trend
through midweek. Some ensembles suggest weak troughing
Tuesday-Thursday that could bring some PoPs to the region, but
for now, looks like dry and warm conditions will manifest.
&&
.AVIATION...
Northwesterly flow aloft becoming westerly this morning and
southwesterly this afternoon as an upper level low moves south
near 130W. Weak onshore flow in the lower levels.
VFR ceilings early this morning. Widespread MVFR ceilings
developing 13z-16z lasting into early afternoon. VFR all areas
by mid afternoon with VFR ceilings continuing into Saturday
morning.
KSEA...MVFR ceilings developing 14z-16z with ceilings lifting
back to VFR 20z-22z. VFR ceilings continuing into Saturday
morning. South wind 4 to 8 knots becoming southwest this
afternoon. Wind switching to northerly 4 to 6 knots around 03z.
Felton
&&
.MARINE...
High pressure over the waters will weaken today. A weak system
will move through the offshore waters into Oregon tonight and
Saturday. High pressure will rebuild over the coastal waters
Sunday and remain through Tuesday.
Possible small craft advisory winds in the Central and Eastern
Strait of Juan de Fuca Saturday night.
Seas 5 to 7 feet today and a little choppy. Seas subsiding to 3
to 5 feet Saturday with 3 to 5 foot seas continuing into the
first half of next week. Felton
&&
.FIRE WEATHER...
A return to onshore flow will maintain cooler and more moist
conditions across western Washington through the weekend. Light
precipitation is likely into Saturday as another weak system
moves over the region with a slight chance (15-20%) of
thunderstorms. Conditions are expected to gradually warm and
dry into next week, though fire weather concerns remain low at
this time.
&&
.SEW WATCHES/WARNINGS/ADVISORIES...
WA...None.
PZ...Small Craft Advisory until 5 AM PDT early this morning for
Coastal Waters From Cape Flattery To James Island 10 To
60 Nm-Coastal Waters From James Island To Point Grenville
10 To 60 Nm-Coastal Waters From Point Grenville To Cape
Shoalwater 10 To 60 Nm.
&&
$$
Sources & last updated
- Data from MET Norway — CC BY 4.0, adapted by SnowAlert fetched Sep 11 02:15
- National Weather Service fetched Sep 11 06:57
- Weather data by Open-Meteo.com, from the ECMWF and NOAA models — CC BY 4.0, adapted by SnowAlert fetched Sep 11 06:07
- USDA NRCS SNOTEL fetched Sep 11 05:35