Issued: 2:07 PM PST Sunday, December 21, 2025
by Robert Hahn

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

Weather Synopsis

Multiple systems will move through the region, bringing heavy snow and snow showers and increased winds.

The first of these systems is approaching the PNW Coastline on Sunday afternoon, spreading a thick swath of moderate to locally heavy snow out ahead of it. This precipitation should spread throughout the Cascades by evening. The heaviest snow will focus on the Mt Baker area, thanks to moderate SSW winds. The trailing cold front moves through before midnight, bringing a shift to WSW winds and an accompanying strong convergence zone mainly targeting Mt Baker overnight as decreasing light snow showers continue elsewhere. Snow levels drop overnight from 2000-3000 ft down to below 2000 ft by Monday morning as most areas get a relative break.

However, moderate snow continues over Mt Baker and the Olympics as a better-organized frontal system approaches Monday afternoon. The setup is similar to Sunday, but the winds will be stronger, and more precipitation is expected to spill over the Olympics to Hurricane Ridge. The rest of the Cascades experience moderate to heavy snow showers late Monday through the evening hours, then snow showers overnight. The wind shift won't be as significant with this system, which will only shift SWerly.

The offshore rotating low drops southward on Tuesday, resulting in a decrease in scattered to isolated snow showers across our region.

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
Sunday Night Decreasing light snow showers. Moderate ridgeline winds in the evening.
Monday Light snow showers becoming moderate to heavy in the afternoon as ridgeine winds become moderate.
Sunday Night Heavy snow showers and strong convergence banding. Decreasing moderate ridgeline winds.
Monday Moderate snow showers become very heavy in the afternoon as moderate ridgeline winds become strong.
Sunday Night Moderate snow showers become light overnight. Increasing light to moderate ridgeline winds.
Monday Light snow showers. Light to moderate ridgeline winds.
Sunday Night Decreasing moderate snow showers. Increasing light to moderate ridgeline winds.
Monday Increasing light to moderate snow showers. Light to moderate ridgeline winds.
Sunday Night Moderate snow becomes light and showery overynight. Increasing light to moderate ridgeline winds. Light E winds shift W at the Pass.
Monday Light snow showers. Light ridgeline and E wind at the Pass.
Sunday Night Moderate snow becomes light and showery overynight. Increasing light to moderate ridgeline winds. Light E winds shift W at the Pass.
Monday Light snow showers. Light to moderate ridgeline and light E wind at the Pass.
Sunday Night Decreasing mostly light snow showers. Increasing light to moderate ridgeline winds.
Monday Very light snow showers. Light to moderate ridgeline winds.
Sunday Night Light snow showers. Increasing light to moderate ridgeline winds.
Monday Very light snow showers. Light to moderate ridgeline winds.
Sunday Night Light snow becoes showery overnight. Light to moderate ridgeline winds.
Monday Light snow showers. Light to moderate ridgeline winds.
Sunday Night Moderate snow transitioning to snow showers. Moderate ridgeline winds.
Monday Light snow showers.

Issued: 2:07 PM PST Sunday, December 21, 2025

Precipitation (in)

Sunday Night Monday Monday Night Tuesday
4 pm - 4 am 4 am - 4 pm 4 pm - 4 am 4 am - 4 pm
Hurricane Ridge LT 0.25 0.75 0.25 - 0.50 LT 0.10
Mt Baker Ski Area 0.75 0.75 0.75 -1.00 LT 0.25
Mt. Loop - Barlow Pass 0.50 LT 0.25 0.75 LT 0.10
Stevens Pass 0.25 - 0.50 LT 0.10 0.25 LT 0.10
Snoqualmie Pass 0.25 - 0.50 LT 0.10 0.25 - 0.50 LT 0.10
Crystal Mt 0.25 LT 0.25 0.25 - 0.50 LT 0.10
Paradise 0.50 LT 0.25 0.50 - 0.75 LT 0.10
White Pass 0.50 LT 0.10 0.25 LT 0.10
Washington Pass 0.25 LT 0.10 0.25 - 0.50 LT 0.10
Mission Ridge LT 0.10 LT 0.10 LT 0.25 LT 0.10
Salmon la Sac - Gallagher Head 0.25 LT 0.10 0.25 LT 0.10
Tieton River - Darland Mt. 0.25 LT 0.10 0.25 LT 0.10
Mt Hood Meadows 0.50 LT 0.25 0.25 LT 0.10
Timberline 0.50 LT 0.25 0.25 LT 0.10
Hurricane Ridge Precipitation (in)
Sunday Night LT 0.25
Monday 0.75
Monday Night 0.25 - 0.50
Tuesday LT 0.10
Mt Baker Ski Area Precipitation (in)
Sunday Night 0.75
Monday 0.75
Monday Night 0.75 -1.00
Tuesday LT 0.25
Mt. Loop - Barlow Pass Precipitation (in)
Sunday Night 0.50
Monday LT 0.25
Monday Night 0.75
Tuesday LT 0.10
Stevens Pass Precipitation (in)
Sunday Night 0.25 - 0.50
Monday LT 0.10
Monday Night 0.25
Tuesday LT 0.10
Snoqualmie Pass Precipitation (in)
Sunday Night 0.25 - 0.50
Monday LT 0.10
Monday Night 0.25 - 0.50
Tuesday LT 0.10
Crystal Mt Precipitation (in)
Sunday Night 0.25
Monday LT 0.25
Monday Night 0.25 - 0.50
Tuesday LT 0.10
Paradise Precipitation (in)
Sunday Night 0.50
Monday LT 0.25
Monday Night 0.50 - 0.75
Tuesday LT 0.10
White Pass Precipitation (in)
Sunday Night 0.50
Monday LT 0.10
Monday Night 0.25
Tuesday LT 0.10
Washington Pass Precipitation (in)
Sunday Night 0.25
Monday LT 0.10
Monday Night 0.25 - 0.50
Tuesday LT 0.10
Mission Ridge Precipitation (in)
Sunday Night LT 0.10
Monday LT 0.10
Monday Night LT 0.25
Tuesday LT 0.10
Salmon la Sac - Gallagher Head Precipitation (in)
Sunday Night 0.25
Monday LT 0.10
Monday Night 0.25
Tuesday LT 0.10
Tieton River - Darland Mt. Precipitation (in)
Sunday Night 0.25
Monday LT 0.10
Monday Night 0.25
Tuesday LT 0.10
Mt Hood Meadows Precipitation (in)
Sunday Night 0.50
Monday LT 0.25
Monday Night 0.25
Tuesday LT 0.10
Timberline Precipitation (in)
Sunday Night 0.50
Monday LT 0.25
Monday Night 0.25
Tuesday LT 0.10

Issued: 2:07 PM PST Sunday, December 21, 2025

Snow Level (ft)

Sunday Evening* Sunday Night Monday Morning* Monday Afternoon* Monday Evening* Monday Night* Tuesday Morning* Tuesday Afternoon*
Olympics 2500' 1500' 2000' 2500' 2000' 1500' 1500' 2000'
West North 3000' 2000' 1500' 2000' 2000' 2000' 1500' 2000'
West Central 3000' 2000' 2000' 2500' 2500' 2000' 1500' 2000'
West South 3500' 2500' 2000' 2500' 3000' 2500' 2000' 2500'
Stevens Pass 2000' 2000' 1000' 2000' 1500' 1500' 1500' 2000'
Snoqualmie Pass 2500' 2500' 1500' 2500' 2000' 2000' 2000' 2500'
East North 2000' 1500' 500' 1500' 1500' 1500' 1000' 2000'
East Central 2000' 2000' 1000' 2500' 1500' 2000' 2000' 2500'
East South 3500' 2500' 1500' 3500' 2500' 2500' 1500' 3000'
Mt. Hood 4500' 3500' 2500' 4000' 3000' 3000' 3000' 3500'
Olympics Elevation
Sunday Evening* 2500'
Sunday Night 1500'
Monday Morning* 2000'
Monday Afternoon* 2500'
Monday Evening* 2000'
Monday Night* 1500'
Tuesday Morning* 1500'
Tuesday Afternoon* 2000'
West North Elevation
Sunday Evening* 3000'
Sunday Night 2000'
Monday Morning* 1500'
Monday Afternoon* 2000'
Monday Evening* 2000'
Monday Night* 2000'
Tuesday Morning* 1500'
Tuesday Afternoon* 2000'
West Central Elevation
Sunday Evening* 3000'
Sunday Night 2000'
Monday Morning* 2000'
Monday Afternoon* 2500'
Monday Evening* 2500'
Monday Night* 2000'
Tuesday Morning* 1500'
Tuesday Afternoon* 2000'
West South Elevation
Sunday Evening* 3500'
Sunday Night 2500'
Monday Morning* 2000'
Monday Afternoon* 2500'
Monday Evening* 3000'
Monday Night* 2500'
Tuesday Morning* 2000'
Tuesday Afternoon* 2500'
Stevens Pass Elevation
Sunday Evening* 2000'
Sunday Night 2000'
Monday Morning* 1000'
Monday Afternoon* 2000'
Monday Evening* 1500'
Monday Night* 1500'
Tuesday Morning* 1500'
Tuesday Afternoon* 2000'
Snoqualmie Pass Elevation
Sunday Evening* 2500'
Sunday Night 2500'
Monday Morning* 1500'
Monday Afternoon* 2500'
Monday Evening* 2000'
Monday Night* 2000'
Tuesday Morning* 2000'
Tuesday Afternoon* 2500'
East North Elevation
Sunday Evening* 2000'
Sunday Night 1500'
Monday Morning* 500'
Monday Afternoon* 1500'
Monday Evening* 1500'
Monday Night* 1500'
Tuesday Morning* 1000'
Tuesday Afternoon* 2000'
East Central Elevation
Sunday Evening* 2000'
Sunday Night 2000'
Monday Morning* 1000'
Monday Afternoon* 2500'
Monday Evening* 1500'
Monday Night* 2000'
Tuesday Morning* 2000'
Tuesday Afternoon* 2500'
East South Elevation
Sunday Evening* 3500'
Sunday Night 2500'
Monday Morning* 1500'
Monday Afternoon* 3500'
Monday Evening* 2500'
Monday Night* 2500'
Tuesday Morning* 1500'
Tuesday Afternoon* 3000'
Mt. Hood Elevation
Sunday Evening* 4500'
Sunday Night 3500'
Monday Morning* 2500'
Monday Afternoon* 4000'
Monday Evening* 3000'
Monday Night* 3000'
Tuesday Morning* 3000'
Tuesday Afternoon* 3500'

Issued: 2:07 PM PST Sunday, December 21, 2025

5000' Temperatures (°F)

Sunday Night Monday
Max / Min Max / Min
Olympics 27 / 19 27 / 21
West North 29 / 20 25 / 20
West Central 29 / 23 26 / 21
West South 31 / 23 28 / 23
Stevens Pass 27 / 23 27 / 19
Snoqualmie Pass 27 / 22 26 / 19
East North 24 / 19 23 / 15
East Central 28 / 21 26 / 18
East South 29 / 22 29 / 20
Mt. Hood 34 / 26 31 / 25
Olympics 5000' Temperature Forecast
(Max / Min)
Sunday Night 27 / 19
Monday 27 / 21
West North 5000' Temperature Forecast
(Max / Min)
Sunday Night 29 / 20
Monday 25 / 20
West Central 5000' Temperature Forecast
(Max / Min)
Sunday Night 29 / 23
Monday 26 / 21
West South 5000' Temperature Forecast
(Max / Min)
Sunday Night 31 / 23
Monday 28 / 23
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Sunday Night 27 / 23
Monday 27 / 19
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Sunday Night 27 / 22
Monday 26 / 19
East North 5000' Temperature Forecast
(Max / Min)
Sunday Night 24 / 19
Monday 23 / 15
East Central 5000' Temperature Forecast
(Max / Min)
Sunday Night 28 / 21
Monday 26 / 18
East South 5000' Temperature Forecast
(Max / Min)
Sunday Night 29 / 22
Monday 29 / 20
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Sunday Night 34 / 26
Monday 31 / 25

Issued: 2:07 PM PST Sunday, December 21, 2025

Ridgeline Winds (mph)

Sunday Evening Sunday Night Monday Morning Monday Afternoon
Olympics SW 10-20 SW 10-20 SSW 10-20 SSW 15-25
West North SSW 15-25 WSW 10-20 S 15-25 S 25-35
West Central SSW 10-20 WSW 15-25 SSW 10-20 SSE 10-20
West South SW 10-20 WSW 15-25 SW 10-20 SSW 10-20
Stevens Pass SSW 5-15 WSW 10-20 SW 5-15 SSE 5-15
Snoqualmie Pass SSW 5-15 W 15-25 SW 10-20 SE 10-20
East North S 5-15 WSW 15-25 SW 10-20 SSE 10-20
East Central SW 5-15 W 15-25 WSW 10-20 S 10-20
East South SW 5-15 W 10-20 WSW 10-20 SSW 10-20
Mt. Hood SW 10-20 WSW 15-25 WSW 15-25 SW 15-25
Olympics Ridgeline Winds (mph)
Sunday Evening SW 10-20
Sunday Night SW 10-20
Monday Morning SSW 10-20
Monday Afternoon SSW 15-25
West North Ridgeline Winds (mph)
Sunday Evening SSW 15-25
Sunday Night WSW 10-20
Monday Morning S 15-25
Monday Afternoon S 25-35
West Central Ridgeline Winds (mph)
Sunday Evening SSW 10-20
Sunday Night WSW 15-25
Monday Morning SSW 10-20
Monday Afternoon SSE 10-20
West South Ridgeline Winds (mph)
Sunday Evening SW 10-20
Sunday Night WSW 15-25
Monday Morning SW 10-20
Monday Afternoon SSW 10-20
Stevens Pass Ridgeline Winds (mph)
Sunday Evening SSW 5-15
Sunday Night WSW 10-20
Monday Morning SW 5-15
Monday Afternoon SSE 5-15
Snoqualmie Pass Ridgeline Winds (mph)
Sunday Evening SSW 5-15
Sunday Night W 15-25
Monday Morning SW 10-20
Monday Afternoon SE 10-20
East North Ridgeline Winds (mph)
Sunday Evening S 5-15
Sunday Night WSW 15-25
Monday Morning SW 10-20
Monday Afternoon SSE 10-20
East Central Ridgeline Winds (mph)
Sunday Evening SW 5-15
Sunday Night W 15-25
Monday Morning WSW 10-20
Monday Afternoon S 10-20
East South Ridgeline Winds (mph)
Sunday Evening SW 5-15
Sunday Night W 10-20
Monday Morning WSW 10-20
Monday Afternoon SSW 10-20
Mt. Hood Ridgeline Winds (mph)
Sunday Evening SW 10-20
Sunday Night WSW 15-25
Monday Morning WSW 15-25
Monday Afternoon SW 15-25

Issued: 2:07 PM PST Sunday, December 21, 2025

Extended Weather Synopsis

The broad band of moisture that targets California early in the week ejects a low-pressure center up the West Coast Tuesday night, reaching the Pacific Northwest on Wednesday. Some models push it more inland. Regardless, expect a band of light snowfall to move northward late Tuesday night through Wednesday. Wednesday night features a brief break before additional disturbances bring light snowfall on Thursday.

Extended Snow Level (ft)

Tuesday Night* Wednesday Wednesday Night* Thursday *
West North 1500' 2000' 1500' 1000'
Snoqualmie Pass 2500' 3000' 2000' 2000'
Mt. Hood 3500' 3500' 3000' 3000'
West North Elevation
Tuesday Night* 1500'
Wednesday 2000'
Wednesday Night* 1500'
Thursday * 1000'
Snoqualmie Pass Elevation
Tuesday Night* 2500'
Wednesday 3000'
Wednesday Night* 2000'
Thursday * 2000'
Mt. Hood Elevation
Tuesday Night* 3500'
Wednesday 3500'
Wednesday Night* 3000'
Thursday * 3000'

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

Previous forecast from Dec 21, 2025

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’.

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