Issued: 6:48 AM PST Wednesday, January 25, 2023
by Dallas Glass

Jump to: Weather Forecast I Precipitation I Snow Level I 5000' Temps I Ridgeline Winds I

Weather Synopsis

Wednesday should shape up to be a very beautiful day out in the mountains with plenty of sunshine. A high-pressure ridge in the eastern Pacific will expand over the region today and bring with it significantly warmer air. So, while some locations will start the day socked in with clouds, expect clearing skies, increasing temperatures, and decreasing winds. 

Overnight clear skies will allow temperature inversions to form in the mountain valleys and passes. This could cause patchy fog to form in a few locations, especially near lakes and rivers. At mid and upper elevations, however, temperatures should remain quite warm. Winds will slowly increase overnight and into Thursday out ahead of our next storm. A short-wave system will approach the region from the north. While precipitation seems to hold off until after sunset, expect increasing clouds and windier conditions in the afternoon. 

Weather Forecast

Olympics
West North
West Central
West South
Stevens Pass
Snoqualmie Pass
East North
East Central
East South
Mt. Hood
Use dropdown to select your zone
Wednesday Mostly sunny with warming temperatures.
Wednesday Night Mostly clear and warm.
Wednesday Becoming mostly sunny with warming temperatures.
Wednesday Night Mostly clear and warm, with patch fog in the mountain valleys.
Wednesday Becoming mostly sunny with warming temperatures.
Wednesday Night Mostly clear and warm, with patchy fog and inversions in the mountain valleys and passes.
Wednesday Becoming mostly sunny with warming temperatures. Moderate NNW winds decreasing during the morning.
Wednesday Night Mostly clear and warm with some patchy fog and inversions in the mountain valleys and passes. Winds becoming moderate from the NW.
Wednesday Foggy in the morning with clearing. Becoming mostly sunny and warming. Light westerly flow at Pass level.
Wednesday Night Mostly clear and warm. Inversions and patchy fog developing in the Pass. Light westerly flow at Pass level.
Wednesday Foggy in the morning with clearing. Becoming mostly sunny and warm. Moderate NW winds decreasing.
Wednesday Night Mostly clear and warm. Inversions and patchy fog developing. NW winds becoming moderate.
Wednesday Becoming sunny with rising temperatures. Light to moderate N winds decreasing.
Wednesday Night Mostly clear with some patchy fog and valley inversions.
Wednesday Sunny and warm. Light to moderate N winds decreasing during the day.
Wednesday Night Clear and warm. Patchy fog and inversions in the mountain valleys and passes. NW winds becoming light to moderate.
Wednesday Sunny and warm.Light to moderate N winds decreasing during the day.
Wednesday Night Clear and warm. Patchy fog and inversions in the mountain valleys and passes. NW winds becoming light to moderate.
Wednesday Sunny and warm. Light to moderate N winds decreasing during the day.
Wednesday Night Clear and warm. Temperature inversions and patchy fog possible in the mountain valleys. Winds becoming NW light to moderate.

Precipitation (in)

Wednesday Wednesday Night Thursday
4 am - 4 pm 4 pm - 4 am 4 am - 4 pm
Hurricane Ridge 0 0 0
Mt Baker Ski Area 0 0 0
Mt. Loop - Barlow Pass 0 0 0
Stevens Pass 0 0 0
Snoqualmie Pass 0 0 0
Crystal Mt 0 0 0
Paradise 0 0 0
White Pass 0 0 0
Washington Pass 0 0 0
Mission Ridge 0 0 0
Salmon la Sac - Gallagher Head 0 0 0
Tieton River - Darland Mt. 0 0 0
Mt Hood Meadows 0 0 0
Timberline 0 0 0
Hurricane Ridge Precipitation (in)
Wednesday 0
Wednesday Night 0
Thursday 0
Mt Baker Ski Area Precipitation (in)
Wednesday 0
Wednesday Night 0
Thursday 0
Mt. Loop - Barlow Pass Precipitation (in)
Wednesday 0
Wednesday Night 0
Thursday 0
Stevens Pass Precipitation (in)
Wednesday 0
Wednesday Night 0
Thursday 0
Snoqualmie Pass Precipitation (in)
Wednesday 0
Wednesday Night 0
Thursday 0
Crystal Mt Precipitation (in)
Wednesday 0
Wednesday Night 0
Thursday 0
Paradise Precipitation (in)
Wednesday 0
Wednesday Night 0
Thursday 0
White Pass Precipitation (in)
Wednesday 0
Wednesday Night 0
Thursday 0
Washington Pass Precipitation (in)
Wednesday 0
Wednesday Night 0
Thursday 0
Mission Ridge Precipitation (in)
Wednesday 0
Wednesday Night 0
Thursday 0
Salmon la Sac - Gallagher Head Precipitation (in)
Wednesday 0
Wednesday Night 0
Thursday 0
Tieton River - Darland Mt. Precipitation (in)
Wednesday 0
Wednesday Night 0
Thursday 0
Mt Hood Meadows Precipitation (in)
Wednesday 0
Wednesday Night 0
Thursday 0
Timberline Precipitation (in)
Wednesday 0
Wednesday Night 0
Thursday 0

Snow Level (ft)

Wednesday Morning Wednesday Afternoon Wednesday Evening Wednesday Night Thursday Morning Thursday Afternoon
Olympics 6000' 8500' 8000' 8000' 7500' 7500'
West North 3000' 7000' 8000' 8000' 7500' 5000'
West Central 4000' 7500' 8500' 8000' 7500' 5500'
West South 4000' 8000' 9000' 9000' 8500' 6500'
Stevens Pass 3500' 7000' 8500' 8500' 8000' 5500'
Snoqualmie Pass 4000' 7500' 9000' 8500' 8000' 6000'
East North 3000' 7000' 8000' 8500' 8500' 5500'
East Central 4000' 7500' 8500' 9000' 8500' 6500'
East South 4000' 8000' 9000' 9500' 8500' 6500'
Mt. Hood 6500' 8500' 9500' 9500' 9000' 8000'
Olympics Elevation
Wednesday Morning 6000'
Wednesday Afternoon 8500'
Wednesday Evening 8000'
Wednesday Night 8000'
Thursday Morning 7500'
Thursday Afternoon 7500'
West North Elevation
Wednesday Morning 3000'
Wednesday Afternoon 7000'
Wednesday Evening 8000'
Wednesday Night 8000'
Thursday Morning 7500'
Thursday Afternoon 5000'
West Central Elevation
Wednesday Morning 4000'
Wednesday Afternoon 7500'
Wednesday Evening 8500'
Wednesday Night 8000'
Thursday Morning 7500'
Thursday Afternoon 5500'
West South Elevation
Wednesday Morning 4000'
Wednesday Afternoon 8000'
Wednesday Evening 9000'
Wednesday Night 9000'
Thursday Morning 8500'
Thursday Afternoon 6500'
Stevens Pass Elevation
Wednesday Morning 3500'
Wednesday Afternoon 7000'
Wednesday Evening 8500'
Wednesday Night 8500'
Thursday Morning 8000'
Thursday Afternoon 5500'
Snoqualmie Pass Elevation
Wednesday Morning 4000'
Wednesday Afternoon 7500'
Wednesday Evening 9000'
Wednesday Night 8500'
Thursday Morning 8000'
Thursday Afternoon 6000'
East North Elevation
Wednesday Morning 3000'
Wednesday Afternoon 7000'
Wednesday Evening 8000'
Wednesday Night 8500'
Thursday Morning 8500'
Thursday Afternoon 5500'
East Central Elevation
Wednesday Morning 4000'
Wednesday Afternoon 7500'
Wednesday Evening 8500'
Wednesday Night 9000'
Thursday Morning 8500'
Thursday Afternoon 6500'
East South Elevation
Wednesday Morning 4000'
Wednesday Afternoon 8000'
Wednesday Evening 9000'
Wednesday Night 9500'
Thursday Morning 8500'
Thursday Afternoon 6500'
Mt. Hood Elevation
Wednesday Morning 6500'
Wednesday Afternoon 8500'
Wednesday Evening 9500'
Wednesday Night 9500'
Thursday Morning 9000'
Thursday Afternoon 8000'

5000' Temperatures (°F)

Wednesday Wednesday Night
Max / Min Max / Min
Olympics 39 / 30 36 / 32
West North 37 / 26 34 / 32
West Central 39 / 27 36 / 30
West South 40 / 27 37 / 30
Stevens Pass 39 / 27 34 / 28
Snoqualmie Pass 38 / 27 35 / 28
East North 37 / 26 33 / 28
East Central 40 / 28 37 / 28
East South 41 / 30 35 / 28
Mt. Hood 41 / 30 38 / 30
Olympics 5000' Temperature Forecast
(Max / Min)
Wednesday 39 / 30
Wednesday Night 36 / 32
West North 5000' Temperature Forecast
(Max / Min)
Wednesday 37 / 26
Wednesday Night 34 / 32
West Central 5000' Temperature Forecast
(Max / Min)
Wednesday 39 / 27
Wednesday Night 36 / 30
West South 5000' Temperature Forecast
(Max / Min)
Wednesday 40 / 27
Wednesday Night 37 / 30
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Wednesday 39 / 27
Wednesday Night 34 / 28
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Wednesday 38 / 27
Wednesday Night 35 / 28
East North 5000' Temperature Forecast
(Max / Min)
Wednesday 37 / 26
Wednesday Night 33 / 28
East Central 5000' Temperature Forecast
(Max / Min)
Wednesday 40 / 28
Wednesday Night 37 / 28
East South 5000' Temperature Forecast
(Max / Min)
Wednesday 41 / 30
Wednesday Night 35 / 28
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Wednesday 41 / 30
Wednesday Night 38 / 30

Ridgeline Winds (mph)

Wednesday Morning Wednesday Afternoon Wednesday Evening Wednesday Night
Olympics N 0-10 N 0-10 N 0-10 NW 5-15
West North N 0-10 N 0-10 VAR 0-10 WNW 5-15
West Central N 5-15 N 0-10 NW 0-10 NW 5-15
West South NNW 10-20 N 0-10 NW 5-15 NW 10-20
Stevens Pass NW 5-15 N 0-10 NW 0-10 W 5-15
Snoqualmie Pass NW 10-20 NW 5-15 NW 5-15 NW 10-20
East North N 10-20 N 5-15 VAR 0-10 WNW 5-15
East Central N 10-20 N 5-15 NW 0-10 NW 10-20
East South N 10-20 N 5-15 NW 5-15 NW 10-20
Mt. Hood N 10-20 NNE 5-15 N 5-15 NW 10-20
Olympics Ridgeline Winds (mph)
Wednesday Morning N 0-10
Wednesday Afternoon N 0-10
Wednesday Evening N 0-10
Wednesday Night NW 5-15
West North Ridgeline Winds (mph)
Wednesday Morning N 0-10
Wednesday Afternoon N 0-10
Wednesday Evening VAR 0-10
Wednesday Night WNW 5-15
West Central Ridgeline Winds (mph)
Wednesday Morning N 5-15
Wednesday Afternoon N 0-10
Wednesday Evening NW 0-10
Wednesday Night NW 5-15
West South Ridgeline Winds (mph)
Wednesday Morning NNW 10-20
Wednesday Afternoon N 0-10
Wednesday Evening NW 5-15
Wednesday Night NW 10-20
Stevens Pass Ridgeline Winds (mph)
Wednesday Morning NW 5-15
Wednesday Afternoon N 0-10
Wednesday Evening NW 0-10
Wednesday Night W 5-15
Snoqualmie Pass Ridgeline Winds (mph)
Wednesday Morning NW 10-20
Wednesday Afternoon NW 5-15
Wednesday Evening NW 5-15
Wednesday Night NW 10-20
East North Ridgeline Winds (mph)
Wednesday Morning N 10-20
Wednesday Afternoon N 5-15
Wednesday Evening VAR 0-10
Wednesday Night WNW 5-15
East Central Ridgeline Winds (mph)
Wednesday Morning N 10-20
Wednesday Afternoon N 5-15
Wednesday Evening NW 0-10
Wednesday Night NW 10-20
East South Ridgeline Winds (mph)
Wednesday Morning N 10-20
Wednesday Afternoon N 5-15
Wednesday Evening NW 5-15
Wednesday Night NW 10-20
Mt. Hood Ridgeline Winds (mph)
Wednesday Morning N 10-20
Wednesday Afternoon NNE 5-15
Wednesday Evening N 5-15
Wednesday Night NW 10-20

Jump to: Weather Forecast I Precipitation I Snow Level I 5000' Temps I Ridgeline Winds I

Previous forecast from Jan 24, 2023

The NWAC program is administered by the USDA-Forest Service and operates from the National Weather Service Forecast Office in Seattle. NWAC services are made possible by important collaboration and support from a wide variety of federal, state and private cooperators.

The 5000’ temperature forecast does not imply a trend over the 12 hr period and only represents the max and min temperatures within a 12 hr period in the zone. The 6-hr snow level forecast, the forecast discussion, and weather forecast sections may add detail regarding temperature trends.

The snow level forecast represents the general snow level over a 6 hr time period. Freezing levels are forecast when precipitation is not expected.

*Easterly or offshore flow is highlighted with an asterisk when we expect relatively cool east winds in the major Cascade Passes. Easterly flow will often lead to temperature inversions and is a key variable for forecasting precipitation type in the Cascade Passes. Strong easterly flow events can affect terrain on a more regional scale.

Ridgeline winds are the average wind speed and direction over a 6 hr time period.

The wind forecast represents an elevation range instead of a single elevation slice. The elevation range overlaps with the near and above treeline elevation bands in the avalanche forecast and differs per zone.

Wind direction indicates the direction the wind originates or comes from on the 16-point compass rose.

Water Equivalent (WE) is the liquid water equivalent of all precipitation types; rain, snow, ice pellets, etc., forecast to the hundredth of an inch at specific locations. To use WE as a proxy for snowfall amounts, start with a snow to water ratio of 10:1 (10 inches of snow = 1 inch WE). Temperatures at or near freezing will generally have a lower ratio (heavy wet snow) and very cold temperatures can have a much higher ratio (dry fluffy snow).

The label LT, is shorthand for ‘less than’.

Updated Mountain Weather Zone Name Changes – December 2020