Issued: 7:00 AM PDT Sunday, March 30, 2025
by Robert Hahn

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

Weather Synopsis

A closed offshore low rotates a frontal boundary northward into Oregon on Sunday. High clouds and ESE winds are already increasing ahead of the system early Sunday. The day will start with filtered sunshine in many areas but expect obscured skies by the afternoon. Moderate ESE winds continue to increase throughout the day in favored areas, particularly near and just west of the Cascade Crest. Light rain and snow start in the Mt Hood area around mid-afternoon, then spread onto the east slopes of the Cascades south of I-90. The initial band of moisture focuses on the southern Washington Cascades during the evening hours and the northern Cascades overnight and slightly favors the east slopes of the Cascades. Winds shift SW in the wake of this initial moisture band as snow levels drop from 4000-4500 down to 3000-3500 ft on Monday. Showers may slowly fill in behind this initial wave of moisture, Sunday night into Monday morning. However, they should increase with more widespread convective showers returning as the low approaches the Oregon Coast during the late morning through afternoon hours.

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 Filtered sunshine early, then obscured skies from late morning onwards.
Sunday Night Periods of light rain and snow. Increasing light to moderate ridgeline winds.
Sunday Filtered sunshine in the morning, then obscured skies in the afternoon.
Sunday Night Increasing periods of light to moderate rain and snow.
Sunday Filtered sunshine in the morning, then obscured skies in the afternoon. Increasing moderate ridgeline winds.
Sunday Night Increasing periods of light to moderate rain and snow. Decreasing light to moderate ridgeline winds.
Sunday Filtered sunshine in the morning, then obscured skies in the afternoon. Increasing moderate ridgeline winds.
Sunday Night Periods of light rain and snow (moderate for the volcanoes). Moderate ridgeline winds in the evening.
Sunday FIltered sunshine in the morning, then obscured skies in the afternoon. Increasing moderate ridgeline and light to moderate E winds at the Pass.
Sunday Night Periods of light rain and snow. Moderate ridgeline winds become light. Light to moderate E wind switches W overnight at the Pass.
Sunday Filtered sunshine in the morning, then obscured skies in the afternoon. Increasing moderate ridgeline and light to moderate E winds at the Pass.
Sunday Night Periods of light rain and snow. Moderate ridgeline winds become light. Light to moderate E wind switches W overnight at the Pass.
Sunday FIltered sunshine in the morning, then obscured skies in the afternoon. Increasing moderate ridgeline winds.
Sunday Night Periods of light rain and snow, overnight. Moderate ridgeline winds become light.
Sunday FIltered sunshine in the morning, then obscured skies in the afternoon. Increasing moderate ridgeline winds.
Sunday Night Periods of light rain and snow, heaviest in the evening. Moderate ridgeline winds become light.
Sunday Filtered sunshine early, then obscured skies from mid-morning onwards. A chance of light rain or snow late in the day. Increasing moderate ridgeline winds.
Sunday Night Periods of light rain and snow, heaviest in the evening. Increasing light to moderate ridgeline winds.
Sunday High clouds lower and thicken with increasing light rain and snow in the afternoon. Increasing moderate ridgeline winds.
Sunday Night Light rain and snow showers. Moderate ridgeline winds.

Precipitation (in)

Sunday Sunday Night Monday
5 am - 5 pm 5 pm - 5 am 5 am - 5 pm
Hurricane Ridge 0 LT 0.10 LT 0.25
Mt Baker Ski Area 0 0.25 LT 0.25
Mt. Loop - Barlow Pass 0 0.25 LT 0.25
Stevens Pass 0 LT 0.25 LT 0.25
Snoqualmie Pass 0 LT 0.25 LT 0.25
Crystal Mt 0 0.25 LT 0.25
Paradise 0 0.25 - 0.50 LT 0.25
White Pass 0 LT 0.25 LT 0.25
Washington Pass 0 0.25 - 0.50 0.25
Mission Ridge LT 0.10 LT 0.25 LT 0.10
Salmon la Sac - Gallagher Head 0 LT 0.25 LT 0.25
Tieton River - Darland Mt. LT 0.10 0.25 LT 0.10
Mt Hood Meadows LT 0.25 LT 0.25 LT 0.25
Timberline LT 0.25 LT 0.25 LT 0.25
Hurricane Ridge Precipitation (in)
Sunday 0
Sunday Night LT 0.10
Monday LT 0.25
Mt Baker Ski Area Precipitation (in)
Sunday 0
Sunday Night 0.25
Monday LT 0.25
Mt. Loop - Barlow Pass Precipitation (in)
Sunday 0
Sunday Night 0.25
Monday LT 0.25
Stevens Pass Precipitation (in)
Sunday 0
Sunday Night LT 0.25
Monday LT 0.25
Snoqualmie Pass Precipitation (in)
Sunday 0
Sunday Night LT 0.25
Monday LT 0.25
Crystal Mt Precipitation (in)
Sunday 0
Sunday Night 0.25
Monday LT 0.25
Paradise Precipitation (in)
Sunday 0
Sunday Night 0.25 - 0.50
Monday LT 0.25
White Pass Precipitation (in)
Sunday 0
Sunday Night LT 0.25
Monday LT 0.25
Washington Pass Precipitation (in)
Sunday 0
Sunday Night 0.25 - 0.50
Monday 0.25
Mission Ridge Precipitation (in)
Sunday LT 0.10
Sunday Night LT 0.25
Monday LT 0.10
Salmon la Sac - Gallagher Head Precipitation (in)
Sunday 0
Sunday Night LT 0.25
Monday LT 0.25
Tieton River - Darland Mt. Precipitation (in)
Sunday LT 0.10
Sunday Night 0.25
Monday LT 0.10
Mt Hood Meadows Precipitation (in)
Sunday LT 0.25
Sunday Night LT 0.25
Monday LT 0.25
Timberline Precipitation (in)
Sunday LT 0.25
Sunday Night LT 0.25
Monday LT 0.25

Snow Level (ft)

Sunday Morning* Sunday Afternoon* Sunday Evening* Sunday Night Monday Morning Monday Afternoon
Olympics 4500' 5500' 4500' 3500' 2500' 3000'
West North 4000' 6000' 4500' 4000' 3000' 3500'
West Central 4500' 6000' 4500' 4000' 3000' 3500'
West South 4500' 6000' 4500' 3500' 3000' 3500'
Stevens Pass 4000' 5500' 4500' 4000' 3000' 3500'
Snoqualmie Pass 4500' 5500' 4500' 4000' 3000' 3500'
East North 3500' 5500' 4500' 4000' 3000' 3500'
East Central 4500' 5000' 4500' 4000' 3000' 3500'
East South 4500' 4000' 4500' 3500' 3000' 3500'
Mt. Hood 5500' 4500' 5000' 3500' 3000' 3500'
Olympics Elevation
Sunday Morning* 4500'
Sunday Afternoon* 5500'
Sunday Evening* 4500'
Sunday Night 3500'
Monday Morning 2500'
Monday Afternoon 3000'
West North Elevation
Sunday Morning* 4000'
Sunday Afternoon* 6000'
Sunday Evening* 4500'
Sunday Night 4000'
Monday Morning 3000'
Monday Afternoon 3500'
West Central Elevation
Sunday Morning* 4500'
Sunday Afternoon* 6000'
Sunday Evening* 4500'
Sunday Night 4000'
Monday Morning 3000'
Monday Afternoon 3500'
West South Elevation
Sunday Morning* 4500'
Sunday Afternoon* 6000'
Sunday Evening* 4500'
Sunday Night 3500'
Monday Morning 3000'
Monday Afternoon 3500'
Stevens Pass Elevation
Sunday Morning* 4000'
Sunday Afternoon* 5500'
Sunday Evening* 4500'
Sunday Night 4000'
Monday Morning 3000'
Monday Afternoon 3500'
Snoqualmie Pass Elevation
Sunday Morning* 4500'
Sunday Afternoon* 5500'
Sunday Evening* 4500'
Sunday Night 4000'
Monday Morning 3000'
Monday Afternoon 3500'
East North Elevation
Sunday Morning* 3500'
Sunday Afternoon* 5500'
Sunday Evening* 4500'
Sunday Night 4000'
Monday Morning 3000'
Monday Afternoon 3500'
East Central Elevation
Sunday Morning* 4500'
Sunday Afternoon* 5000'
Sunday Evening* 4500'
Sunday Night 4000'
Monday Morning 3000'
Monday Afternoon 3500'
East South Elevation
Sunday Morning* 4500'
Sunday Afternoon* 4000'
Sunday Evening* 4500'
Sunday Night 3500'
Monday Morning 3000'
Monday Afternoon 3500'
Mt. Hood Elevation
Sunday Morning* 5500'
Sunday Afternoon* 4500'
Sunday Evening* 5000'
Sunday Night 3500'
Monday Morning 3000'
Monday Afternoon 3500'

5000' Temperatures (°F)

Sunday Sunday Night
Max / Min Max / Min
Olympics 38 / 27 36 / 26
West North 39 / 30 36 / 29
West Central 36 / 30 35 / 28
West South 38 / 30 35 / 27
Stevens Pass 36 / 29 36 / 29
Snoqualmie Pass 36 / 28 36 / 26
East North 37 / 20 36 / 28
East Central 36 / 29 36 / 28
East South 37 / 30 33 / 27
Mt. Hood 40 / 31 35 / 27
Olympics 5000' Temperature Forecast
(Max / Min)
Sunday 38 / 27
Sunday Night 36 / 26
West North 5000' Temperature Forecast
(Max / Min)
Sunday 39 / 30
Sunday Night 36 / 29
West Central 5000' Temperature Forecast
(Max / Min)
Sunday 36 / 30
Sunday Night 35 / 28
West South 5000' Temperature Forecast
(Max / Min)
Sunday 38 / 30
Sunday Night 35 / 27
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Sunday 36 / 29
Sunday Night 36 / 29
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Sunday 36 / 28
Sunday Night 36 / 26
East North 5000' Temperature Forecast
(Max / Min)
Sunday 37 / 20
Sunday Night 36 / 28
East Central 5000' Temperature Forecast
(Max / Min)
Sunday 36 / 29
Sunday Night 36 / 28
East South 5000' Temperature Forecast
(Max / Min)
Sunday 37 / 30
Sunday Night 33 / 27
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Sunday 40 / 31
Sunday Night 35 / 27

Ridgeline Winds (mph)

Sunday Morning Sunday Afternoon Sunday Evening Sunday Night
Olympics ESE 5-15 ESE 10-20 ESE 10-20 S 10-20
West North ESE 5-15 ESE 10-20 ESE 10-20 S 10-20
West Central ESE 10-20 ESE 20-30 ESE 20-30 SSW 10-20
West South ESE 10-20 ESE 15-25 SSE 15-25 SSW 5-15
Stevens Pass ESE 15-25 ESE 15-25 ESE 15-25 WSW 5-15
Snoqualmie Pass ESE 20-30 ESE 25-35 ESE 20-30 W 5-15
East North ESE 10-20 ESE 15-25 ESE 10-20 S 5-15
East Central ESE 15-25 ESE 15-25 ESE 15-25 WSW 5-15
East South ESE 15-25 ESE 15-25 ESE 5-15 WSW 10-20
Mt. Hood SE 10-20 SE 20-30 SW 25-35 SW 15-25
Olympics Ridgeline Winds (mph)
Sunday Morning ESE 5-15
Sunday Afternoon ESE 10-20
Sunday Evening ESE 10-20
Sunday Night S 10-20
West North Ridgeline Winds (mph)
Sunday Morning ESE 5-15
Sunday Afternoon ESE 10-20
Sunday Evening ESE 10-20
Sunday Night S 10-20
West Central Ridgeline Winds (mph)
Sunday Morning ESE 10-20
Sunday Afternoon ESE 20-30
Sunday Evening ESE 20-30
Sunday Night SSW 10-20
West South Ridgeline Winds (mph)
Sunday Morning ESE 10-20
Sunday Afternoon ESE 15-25
Sunday Evening SSE 15-25
Sunday Night SSW 5-15
Stevens Pass Ridgeline Winds (mph)
Sunday Morning ESE 15-25
Sunday Afternoon ESE 15-25
Sunday Evening ESE 15-25
Sunday Night WSW 5-15
Snoqualmie Pass Ridgeline Winds (mph)
Sunday Morning ESE 20-30
Sunday Afternoon ESE 25-35
Sunday Evening ESE 20-30
Sunday Night W 5-15
East North Ridgeline Winds (mph)
Sunday Morning ESE 10-20
Sunday Afternoon ESE 15-25
Sunday Evening ESE 10-20
Sunday Night S 5-15
East Central Ridgeline Winds (mph)
Sunday Morning ESE 15-25
Sunday Afternoon ESE 15-25
Sunday Evening ESE 15-25
Sunday Night WSW 5-15
East South Ridgeline Winds (mph)
Sunday Morning ESE 15-25
Sunday Afternoon ESE 15-25
Sunday Evening ESE 5-15
Sunday Night WSW 10-20
Mt. Hood Ridgeline Winds (mph)
Sunday Morning SE 10-20
Sunday Afternoon SE 20-30
Sunday Evening SW 25-35
Sunday Night SW 15-25

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

Previous forecast from Mar 29, 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’.