SXUS46 KSEW 201039
RECSEW

Mount Rainier Recreational Forecast
National Weather Service Seattle WA
339 AM PDT Thu Aug 20 2026

.SYNOPSIS...
Weak upper level ridge over the park Thursday. Upper level low
approaching from the southwest Friday will move into the coastal
waters Saturday and into Southern British Columbia early Sunday
morning. System spinning out of low moving through the park early
Saturday with showers and possible thunderstorms. Upper level
ridge rebuilding Sunday will move east Monday. Weak system moving
through late Tuesday night as an upper level trough develops well
off the coast.

&&

.THURSDAY...Sunny. Freezing level near 14500 feet.
.THURSDAY NIGHT...Mostly clear. Freezing level near 15000 feet.
.FRIDAY...Mostly cloudy. Freezing level near 14500 feet.
.FRIDAY NIGHT...Cloudy. A chance of showers and a slight chance
of thunderstorms after midnight. Snow level near 12500 feet.
.SATURDAY...Mostly cloudy. Scattered showers and a chance of
thunderstorms in the morning, then a chance of showers and a
slight chance of thunderstorms in the afternoon. Snow level near
11500 feet.

&&

Temperature and wind forecasts for selected locations.

                       Thu    Thu    Fri    Fri    Sat
                            Night         Night

Summit   (14411 FT)     27     27     26     24     21
                     SW 25  SW 30   S 30   S 35   S 30

Camp Muir(10188 FT)     53     48     55     48     41
                     SW 10  SW 15   S 20  SE 15   S 15

Paradise  (5420 FT)     75     59     75     56     59
                      W  5   W  5   S  5   W  5  SW 10

Longmire  (2760 FT)     86     59     86     55     70
                     SW  5  NE  5  SW  5   W  5   W 10

++ Temperatures and wind for the summit and Camp Muir are average
   conditions expected in the free air at those elevations.
++ Temperatures for Paradise and Longmire are the expected highs and
   lows. Wind is the average wind expected during that period.

.Extended Forecast...

.SATURDAY NIGHT...Mostly cloudy with a slight chance of showers.
Snow level near 9500 feet.
.SUNDAY...Mostly cloudy in the morning then becoming mostly
sunny. Freezing level near 11500 feet.
.SUNDAY NIGHT...Partly cloudy. Freezing level near 13500 feet.
.MONDAY...Sunny. Freezing level near 14000 feet.
.MONDAY NIGHT...Mostly clear. Freezing level near 13500 feet.
.TUESDAY...Mostly sunny. Freezing level near 11000 feet.
.TUESDAY NIGHT...Partly cloudy with a slight chance of showers.
Snow level near 10000 feet.
.WEDNESDAY...Mostly sunny. Freezing level near 13500 feet.

$$

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