Issued: 2:38 PM PDT Sunday, April 13, 2025
by Robert Hahn

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

Weather Synopsis

The high pressure expanding into our region maintains dry weather and clear or mostly sunny skies through Tuesday. Thin high clouds continue to filter over the top of the ridge and will be somewhat more prevalent across NW Washington as the ridge moves to the coast Sunday night and inland on Monday.

Temperatures responded to the incoming ridge on Sunday, but expect further temperature increases Sunday night with 5000 ft low temperatures staying near or above freezing. A few colder snow-covered valleys will have below-freezing temperatures as light winds enable cold air to pool. Monday should be the warmest day of the week, with freezing levels rising to 9500 ft in the north and 11500 ft in the south by the afternoon. Some areas in the southern Cascades could experience some light to moderate SE winds Monday morning as the ridge shifts inland.

Freezing levels remain elevated Monday night as the ridge begins to flatten. A weak disturbance crossing southern British Columbia on Tuesday will likely bring temperatures down a notch as freezing levels lower to 7500-10000 ft.

The only moderate winds to speak of will be early Monday morning around the Mt Hood area, where a short period of moderate SE winds is poss

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 Clear with high clouds at times and mild.
Monday Mostly sunny with thin high clouds at times. Warm.
Sunday Night Clear with high clouds at times and mild. A weak inversion forms below 5000 ft.
Monday Mostly sunny with thin high clouds at times. Warm.
Sunday Night Clear with high clouds at times and mild. A weak inversion forms below 5000 ft.
Monday Mostly sunny with thin high clouds at times. Warm.
Sunday Night Clear with high clouds at times and mild. A weak inversion forms below 5000 ft.
Monday Mostly sunny with a few increasing high clouds. Warm.
Sunday Night Clear with high clouds at times and mild. A weak inversion forms below 5000 ft. Light ridgeline and variable then E winds at the Pass.
Monday Mostly sunny with a few high clouds. Warm. Light ridgeline winds. Light E winds at the Pass may switch W in the afternoon.
Sunday Night Clear with high clouds at times and mild. A weak inversion forms below 5000 ft. Light ridgeline and variable then E winds at the Pass.
Monday Mostly sunny with a few high clouds. Warm. Light ridgeline winds. Light E winds at the Pass may switch W in the afternoon.
Sunday Night Clear with high clouds at times. Milder. A weak inversion forms below 5000 ft.
Monday Mostly sunny with a few high clouds. Warm.
Sunday Night Clear with high clouds at times and mild. A weak inversion forms below 5000 ft.
Monday Mostly sunny with a few high clouds. Warm.
Sunday Night Clear with high clouds at times and mild. A weak inversion forms below 5000 ft.
Monday Mostly sunny with a few high clouds. Warm.
Sunday Night Clear with high clouds at times and mild. A weak inversion forms below 5000 ft.
Monday Mostly sunny with thin high clouds at times. Warm. Moderate ridgeline wind gusts early in the day.

Issued: 2:38 PM PDT Sunday, April 13, 2025

Precipitation (in)

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

Issued: 2:38 PM PDT Sunday, April 13, 2025

Snow Level (ft)

Sunday Evening Sunday Night* Monday Morning* Monday Afternoon Monday Evening Monday Night Tuesday Morning Tuesday Afternoon
Olympics 8000' 9500' 9500' 9500' 9000' 8500' 8500' 7500'
West North 6000' 7000' 8500' 8500' 8500' 8000' 7500' 7500'
West Central 5000' 7500' 9000' 9500' 9000' 8500' 8000' 8000'
West South 7000' 8000' 9500' 10000' 10500' 10000' 9500' 9000'
Stevens Pass 7000' 7000' 9000' 9500' 9500' 9000' 9000' 8500'
Snoqualmie Pass 7500' 8000' 9000' 9500' 10000' 9500' 9500' 8500'
East North 6000' 5500' 6500' 8000' 8500' 8500' 7500' 8500'
East Central 7000' 7000' 8500' 9500' 10000' 10000' 9500' 9000'
East South 7500' 7000' 9000' 10500' 11000' 10500' 10500' 9500'
Mt. Hood 10000' 11000' 11000' 11000' 11500' 10500' 10500' 9500'
Olympics Elevation
Sunday Evening 8000'
Sunday Night* 9500'
Monday Morning* 9500'
Monday Afternoon 9500'
Monday Evening 9000'
Monday Night 8500'
Tuesday Morning 8500'
Tuesday Afternoon 7500'
West North Elevation
Sunday Evening 6000'
Sunday Night* 7000'
Monday Morning* 8500'
Monday Afternoon 8500'
Monday Evening 8500'
Monday Night 8000'
Tuesday Morning 7500'
Tuesday Afternoon 7500'
West Central Elevation
Sunday Evening 5000'
Sunday Night* 7500'
Monday Morning* 9000'
Monday Afternoon 9500'
Monday Evening 9000'
Monday Night 8500'
Tuesday Morning 8000'
Tuesday Afternoon 8000'
West South Elevation
Sunday Evening 7000'
Sunday Night* 8000'
Monday Morning* 9500'
Monday Afternoon 10000'
Monday Evening 10500'
Monday Night 10000'
Tuesday Morning 9500'
Tuesday Afternoon 9000'
Stevens Pass Elevation
Sunday Evening 7000'
Sunday Night* 7000'
Monday Morning* 9000'
Monday Afternoon 9500'
Monday Evening 9500'
Monday Night 9000'
Tuesday Morning 9000'
Tuesday Afternoon 8500'
Snoqualmie Pass Elevation
Sunday Evening 7500'
Sunday Night* 8000'
Monday Morning* 9000'
Monday Afternoon 9500'
Monday Evening 10000'
Monday Night 9500'
Tuesday Morning 9500'
Tuesday Afternoon 8500'
East North Elevation
Sunday Evening 6000'
Sunday Night* 5500'
Monday Morning* 6500'
Monday Afternoon 8000'
Monday Evening 8500'
Monday Night 8500'
Tuesday Morning 7500'
Tuesday Afternoon 8500'
East Central Elevation
Sunday Evening 7000'
Sunday Night* 7000'
Monday Morning* 8500'
Monday Afternoon 9500'
Monday Evening 10000'
Monday Night 10000'
Tuesday Morning 9500'
Tuesday Afternoon 9000'
East South Elevation
Sunday Evening 7500'
Sunday Night* 7000'
Monday Morning* 9000'
Monday Afternoon 10500'
Monday Evening 11000'
Monday Night 10500'
Tuesday Morning 10500'
Tuesday Afternoon 9500'
Mt. Hood Elevation
Sunday Evening 10000'
Sunday Night* 11000'
Monday Morning* 11000'
Monday Afternoon 11000'
Monday Evening 11500'
Monday Night 10500'
Tuesday Morning 10500'
Tuesday Afternoon 9500'

Issued: 2:38 PM PDT Sunday, April 13, 2025

5000' Temperatures (°F)

Sunday Night Monday
Max / Min Max / Min
Olympics 38 / 33 48 / 35
West North 37 / 32 47 / 35
West Central 38 / 34 49 / 35
West South 45 / 34 56 / 35
Stevens Pass 42 / 33 51 / 33
Snoqualmie Pass 40 / 33 49 / 34
East North 41 / 32 48 / 32
East Central 41 / 33 49 / 33
East South 43 / 33 53 / 33
Mt. Hood 43 / 36 55 / 36
Olympics 5000' Temperature Forecast
(Max / Min)
Sunday Night 38 / 33
Monday 48 / 35
West North 5000' Temperature Forecast
(Max / Min)
Sunday Night 37 / 32
Monday 47 / 35
West Central 5000' Temperature Forecast
(Max / Min)
Sunday Night 38 / 34
Monday 49 / 35
West South 5000' Temperature Forecast
(Max / Min)
Sunday Night 45 / 34
Monday 56 / 35
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Sunday Night 42 / 33
Monday 51 / 33
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Sunday Night 40 / 33
Monday 49 / 34
East North 5000' Temperature Forecast
(Max / Min)
Sunday Night 41 / 32
Monday 48 / 32
East Central 5000' Temperature Forecast
(Max / Min)
Sunday Night 41 / 33
Monday 49 / 33
East South 5000' Temperature Forecast
(Max / Min)
Sunday Night 43 / 33
Monday 53 / 33
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Sunday Night 43 / 36
Monday 55 / 36

Issued: 2:38 PM PDT Sunday, April 13, 2025

Ridgeline Winds (mph)

Sunday Evening Sunday Night Monday Morning Monday Afternoon
Olympics VAR 0-10 VAR 0-10 VAR 0-10 WNW 0-10
West North S 0-10 SW 0-10 SW 0-10 SW 0-10
West Central W 0-10 VAR 0-10 S 5-15 SE 0-10
West South E 0-10 E 0-10 SE 0-10 VAR 0-10
Stevens Pass VAR 0-10 E 0-10 SE 5-15 VAR 0-10
Snoqualmie Pass VAR 0-10 E 5-15 ESE 5-15 VAR 0-10
East North WSW 0-10 SSE 0-10 SSE 0-10 SSW 0-10
East Central W 0-10 SSE 0-10 SSE 0-10 SSW 0-10
East South VAR 0-10 ESE 5-15 SE 5-15 SW 0-10
Mt. Hood E 0-10 SE 5-15 SSE 5-15 SSW 0-10
Olympics Ridgeline Winds (mph)
Sunday Evening VAR 0-10
Sunday Night VAR 0-10
Monday Morning VAR 0-10
Monday Afternoon WNW 0-10
West North Ridgeline Winds (mph)
Sunday Evening S 0-10
Sunday Night SW 0-10
Monday Morning SW 0-10
Monday Afternoon SW 0-10
West Central Ridgeline Winds (mph)
Sunday Evening W 0-10
Sunday Night VAR 0-10
Monday Morning S 5-15
Monday Afternoon SE 0-10
West South Ridgeline Winds (mph)
Sunday Evening E 0-10
Sunday Night E 0-10
Monday Morning SE 0-10
Monday Afternoon VAR 0-10
Stevens Pass Ridgeline Winds (mph)
Sunday Evening VAR 0-10
Sunday Night E 0-10
Monday Morning SE 5-15
Monday Afternoon VAR 0-10
Snoqualmie Pass Ridgeline Winds (mph)
Sunday Evening VAR 0-10
Sunday Night E 5-15
Monday Morning ESE 5-15
Monday Afternoon VAR 0-10
East North Ridgeline Winds (mph)
Sunday Evening WSW 0-10
Sunday Night SSE 0-10
Monday Morning SSE 0-10
Monday Afternoon SSW 0-10
East Central Ridgeline Winds (mph)
Sunday Evening W 0-10
Sunday Night SSE 0-10
Monday Morning SSE 0-10
Monday Afternoon SSW 0-10
East South Ridgeline Winds (mph)
Sunday Evening VAR 0-10
Sunday Night ESE 5-15
Monday Morning SE 5-15
Monday Afternoon SW 0-10
Mt. Hood Ridgeline Winds (mph)
Sunday Evening E 0-10
Sunday Night SE 5-15
Monday Morning SSE 5-15
Monday Afternoon SSW 0-10

Issued: 2:38 PM PDT Sunday, April 13, 2025

Extended Weather Synopsis

Light WNW flow aloft shifts NNW Tuesday night into Wednesday. Cooling temperatures aloft could touch off some isolated rain or high-elevation snow showers Wednesday afternoon as a disturbance passes east of the Cascades. Expect skies to fully clear Wednesday night into Thursday as another ridge of high pressure amplifies offshore.

Extended Snow Level (ft)

Tuesday Night Wednesday Wednesday Night Thursday
West North 6500' 5500' 5500' 5000'
Snoqualmie Pass 7500' 6000' 5000' 5000'
Mt. Hood 9500' 8500' 7500' 5000'
West North Elevation
Tuesday Night 6500'
Wednesday 5500'
Wednesday Night 5500'
Thursday 5000'
Snoqualmie Pass Elevation
Tuesday Night 7500'
Wednesday 6000'
Wednesday Night 5000'
Thursday 5000'
Mt. Hood Elevation
Tuesday Night 9500'
Wednesday 8500'
Wednesday Night 7500'
Thursday 5000'

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

Previous forecast from Apr 13, 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’.