Issued: 2:53 PM PDT Monday, April 20, 2026
by Dennis D'Amico

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

Weather Synopsis

It's been another warm day with mountain high temperatures in the 50s and low 60s this afternoon under variable cloud cover.  An upper-level low spinning well off the California coast may rotate a few light showers into the Mt Hood area and the south WA Cascades overnight. Otherwise, we can expect a continuation of mild temperatures overnight with variable high and mid clouds. 

On Tuesday, look for scattered showers to spark up in the afternoon as the upper low drifts in closer to the OR/CA coast.  Increasing onshore westerly flow will cool mid and low elevation temperatures near and west of the Cascade crest in the afternoon. Above the marine layer, the steering flow will allow scattered showers and the odd thunderstorm that develop near and east of the Cascade crest to drift from SE to NW in the afternoon and evening hours. 

Conditions look wetter later Tuesday night into Wednesday morning as the upper low pushes inland. With decent upper-level support, we could see moderate bands of showers hit anywhere from the central WA Cascades to Mt Hood.  Snow levels will drop Tuesday night, and we'll start to see some new snow at higher elevations. Snow levels will fall to mid-elevations closer to the low for the central/south WA Cascades and especially Mt Hood. 

On Wednesday afternoon, the now open trough pushes into the intermountain West, with a brisk westerly flow (strong near Mt Hood) developing and a continuation of showers and lower snow levels (4500-5500') along the west slopes of the Cascades and Passes, Olympics, and Mt Hood. Expect milder and drier conditions along the east slopes of the Cascades. 

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
Monday Night Partly cloudy with mid and high clouds. Light to occasionally moderate ridgeline winds.
Tuesday Cloudy with scattered light rain showers mainly in the afternoon. Light to occasionally moderate ridgeline winds.
Monday Night Partly cloudy with mid and high clouds. Light ridgeline winds.
Tuesday Mostly cloudy with a chance of light rain showers in the afternoon. Light to occasionally moderate ridgeline winds.
Monday Night Partly cloudy with mid and high clouds. Light to occasionally moderate ridgeline winds.
Tuesday Mostly cloudy in the morning, then cloudy with a chance of light rain showers in the afternoon. Light to occasionally moderate ridgeline winds.
Monday Night Partly cloudy with mid and high clouds this evening with a slight chance of an evening shower. Becoming mostly cloudy with a chance of light rain showers after midnight. Light to occasionally moderate ridgeline winds becoming moderate after midnight.
Tuesday Mostly cloudy in the morning, then cloudy with scattered light rain showers in the afternoon. Slight chance of a thunderstorm in the afternoon and evening.
Monday Night Partly cloudy with mid and high clouds. Light to occasionally moderate E Pass level and SSE ridgeline winds.
Tuesday Mostly cloudy in the morning, then cloudy with a chance of light rain showers in the afternoon. Slight chance of a thunderstorm in the afternoon and evening. Light to moderate E Pass level and SE ridgeline winds becoming W in the afternoon.
Monday Night Partly cloudy with mid and high clouds. Light to occasionally moderate E Pass level and SSE ridgeline winds.
Tuesday Mostly cloudy in the morning, then cloudy with a chance of light rain showers in the afternoon. Slight chance of a thunderstorm in the afternoon and evening. Light to moderate E Pass level and SE ridgeline winds becoming W in the afternoon.
Monday Night Partly cloudy with mid and high clouds. Light ridgeline winds.
Tuesday Mostly cloudy with a chance of light rain showers mainly in the afternoon. Light to occasionally moderate ridgeline winds.
Monday Night Partly cloudy with mid and high clouds. Light to moderate ridgeline winds.
Tuesday Mostly cloudy with a chance of light rain showers, mainly in the afternoon. Slight chance of a thunderstorm in the afternoon and evening. Light to occasionally moderate ridgeline winds.
Monday Night Partly cloudy with mid and high clouds. Light to moderate ridgeline winds.
Tuesday Mostly cloudy with scattered light rain showers, mainly in the afternoon. Slight chance of a thunderstorm in the afternoon and evening. Light to occasionally moderate ridgeline winds.
Monday Night Mostly cloudy then becoming cloudy with scattered light rain showers after midnight. Moderate ridgeline winds.
Tuesday Cloudy with scattered light rain and high elevation snow showers. Moderate ridgeline winds.

Issued: 2:53 PM PDT Monday, April 20, 2026

Precipitation (in)

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

Issued: 2:53 PM PDT Monday, April 20, 2026

Snow Level (ft)

Monday Evening Monday Night Tuesday Morning Tuesday Afternoon Tuesday Evening Tuesday Night Wednesday Morning Wednesday Afternoon
Olympics 9500' 9500' 9000' 7000' 7000' 7000' 6500' 6000'
West North 10000' 10000' 10000' 8000' 8000' 7500' 6500' 6000'
West Central 10000' 10000' 9500' 8500' 7500' 6000' 5500' 6000'
West South 10000' 10000' 9500' 8500' 6500' 5500' 4500' 5500'
Stevens Pass 10000' 10000' 10000' 8500' 8000' 6000' 5000' 6000'
Snoqualmie Pass 10000' 10000' 9500' 8500' 7000' 5500' 4500' 5500'
East North 10000' 10000' 10000' 9000' 9000' 7500' 6500' 7000'
East Central 10000' 10000' 10000' 9000' 9000' 7000' 6000' 7000'
East South 10000' 10000' 9500' 8500' 7000' 6000' 5000' 6500'
Mt. Hood 9500' 9500' 8000' 7500' 6000' 5000' 4000' 4500'
Olympics Elevation
Monday Evening 9500'
Monday Night 9500'
Tuesday Morning 9000'
Tuesday Afternoon 7000'
Tuesday Evening 7000'
Tuesday Night 7000'
Wednesday Morning 6500'
Wednesday Afternoon 6000'
West North Elevation
Monday Evening 10000'
Monday Night 10000'
Tuesday Morning 10000'
Tuesday Afternoon 8000'
Tuesday Evening 8000'
Tuesday Night 7500'
Wednesday Morning 6500'
Wednesday Afternoon 6000'
West Central Elevation
Monday Evening 10000'
Monday Night 10000'
Tuesday Morning 9500'
Tuesday Afternoon 8500'
Tuesday Evening 7500'
Tuesday Night 6000'
Wednesday Morning 5500'
Wednesday Afternoon 6000'
West South Elevation
Monday Evening 10000'
Monday Night 10000'
Tuesday Morning 9500'
Tuesday Afternoon 8500'
Tuesday Evening 6500'
Tuesday Night 5500'
Wednesday Morning 4500'
Wednesday Afternoon 5500'
Stevens Pass Elevation
Monday Evening 10000'
Monday Night 10000'
Tuesday Morning 10000'
Tuesday Afternoon 8500'
Tuesday Evening 8000'
Tuesday Night 6000'
Wednesday Morning 5000'
Wednesday Afternoon 6000'
Snoqualmie Pass Elevation
Monday Evening 10000'
Monday Night 10000'
Tuesday Morning 9500'
Tuesday Afternoon 8500'
Tuesday Evening 7000'
Tuesday Night 5500'
Wednesday Morning 4500'
Wednesday Afternoon 5500'
East North Elevation
Monday Evening 10000'
Monday Night 10000'
Tuesday Morning 10000'
Tuesday Afternoon 9000'
Tuesday Evening 9000'
Tuesday Night 7500'
Wednesday Morning 6500'
Wednesday Afternoon 7000'
East Central Elevation
Monday Evening 10000'
Monday Night 10000'
Tuesday Morning 10000'
Tuesday Afternoon 9000'
Tuesday Evening 9000'
Tuesday Night 7000'
Wednesday Morning 6000'
Wednesday Afternoon 7000'
East South Elevation
Monday Evening 10000'
Monday Night 10000'
Tuesday Morning 9500'
Tuesday Afternoon 8500'
Tuesday Evening 7000'
Tuesday Night 6000'
Wednesday Morning 5000'
Wednesday Afternoon 6500'
Mt. Hood Elevation
Monday Evening 9500'
Monday Night 9500'
Tuesday Morning 8000'
Tuesday Afternoon 7500'
Tuesday Evening 6000'
Tuesday Night 5000'
Wednesday Morning 4000'
Wednesday Afternoon 4500'

Issued: 2:53 PM PDT Monday, April 20, 2026

5000' Temperatures (°F)

Monday Night Tuesday
Max / Min Max / Min
Olympics 52 / 42 47 / 43
West North 55 / 44 52 / 45
West Central 54 / 43 47 / 44
West South 55 / 41 47 / 42
Stevens Pass 54 / 43 51 / 44
Snoqualmie Pass 54 / 42 47 / 42
East North 54 / 40 57 / 43
East Central 56 / 45 56 / 46
East South 56 / 44 52 / 46
Mt. Hood 52 / 42 46 / 43
Olympics 5000' Temperature Forecast
(Max / Min)
Monday Night 52 / 42
Tuesday 47 / 43
West North 5000' Temperature Forecast
(Max / Min)
Monday Night 55 / 44
Tuesday 52 / 45
West Central 5000' Temperature Forecast
(Max / Min)
Monday Night 54 / 43
Tuesday 47 / 44
West South 5000' Temperature Forecast
(Max / Min)
Monday Night 55 / 41
Tuesday 47 / 42
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Monday Night 54 / 43
Tuesday 51 / 44
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Monday Night 54 / 42
Tuesday 47 / 42
East North 5000' Temperature Forecast
(Max / Min)
Monday Night 54 / 40
Tuesday 57 / 43
East Central 5000' Temperature Forecast
(Max / Min)
Monday Night 56 / 45
Tuesday 56 / 46
East South 5000' Temperature Forecast
(Max / Min)
Monday Night 56 / 44
Tuesday 52 / 46
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Monday Night 52 / 42
Tuesday 46 / 43

Issued: 2:53 PM PDT Monday, April 20, 2026

Ridgeline Winds (mph)

Monday Evening Monday Night Tuesday Morning Tuesday Afternoon
Olympics W 0-10 ESE 5-15 ESE 5-15 W 5-15
West North WSW 0-10 E 0-10 E 0-10 W 5-15
West Central W 5-15 ESE 5-15 ESE 5-15 WSW 0-10
West South W 5-15 SE 10-20 SE 15-25 W 5-15
Stevens Pass W 0-10 SE 0-10 SE 5-15 W 5-15
Snoqualmie Pass W 5-15 SE 5-15 SE 10-20 W 10-20
East North SW 0-10 S 0-10 S 5-15 WSW 5-15
East Central SSW 5-15 SE 5-15 SE 5-15 W 10-20
East South S 5-15 SE 5-15 SE 5-15 W 5-15
Mt. Hood SE 10-20 SE 15-25 SSW 15-25 W 10-20
Olympics Ridgeline Winds (mph)
Monday Evening W 0-10
Monday Night ESE 5-15
Tuesday Morning ESE 5-15
Tuesday Afternoon W 5-15
West North Ridgeline Winds (mph)
Monday Evening WSW 0-10
Monday Night E 0-10
Tuesday Morning E 0-10
Tuesday Afternoon W 5-15
West Central Ridgeline Winds (mph)
Monday Evening W 5-15
Monday Night ESE 5-15
Tuesday Morning ESE 5-15
Tuesday Afternoon WSW 0-10
West South Ridgeline Winds (mph)
Monday Evening W 5-15
Monday Night SE 10-20
Tuesday Morning SE 15-25
Tuesday Afternoon W 5-15
Stevens Pass Ridgeline Winds (mph)
Monday Evening W 0-10
Monday Night SE 0-10
Tuesday Morning SE 5-15
Tuesday Afternoon W 5-15
Snoqualmie Pass Ridgeline Winds (mph)
Monday Evening W 5-15
Monday Night SE 5-15
Tuesday Morning SE 10-20
Tuesday Afternoon W 10-20
East North Ridgeline Winds (mph)
Monday Evening SW 0-10
Monday Night S 0-10
Tuesday Morning S 5-15
Tuesday Afternoon WSW 5-15
East Central Ridgeline Winds (mph)
Monday Evening SSW 5-15
Monday Night SE 5-15
Tuesday Morning SE 5-15
Tuesday Afternoon W 10-20
East South Ridgeline Winds (mph)
Monday Evening S 5-15
Monday Night SE 5-15
Tuesday Morning SE 5-15
Tuesday Afternoon W 5-15
Mt. Hood Ridgeline Winds (mph)
Monday Evening SE 10-20
Monday Night SE 15-25
Tuesday Morning SSW 15-25
Tuesday Afternoon W 10-20

Issued: 2:53 PM PDT Monday, April 20, 2026

Extended Weather Synopsis

We'll be on the backside of the same trough Wednesday night through Friday.  Lingering west-side showers should dry up by Thursday morning. Look for a slow warming trend Thursday and Friday along with generally dry weather.  

Extended Snow Level (ft)

Wednesday Night Thursday Thursday Night Friday
West North 5500' 6500' 7000' 6500'
Snoqualmie Pass 4500' 6000' 7000' 7000'
Mt. Hood 4000' 7000' 8000' 7500'
West North Elevation
Wednesday Night 5500'
Thursday 6500'
Thursday Night 7000'
Friday 6500'
Snoqualmie Pass Elevation
Wednesday Night 4500'
Thursday 6000'
Thursday Night 7000'
Friday 7000'
Mt. Hood Elevation
Wednesday Night 4000'
Thursday 7000'
Thursday Night 8000'
Friday 7500'

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

Previous forecast from Apr 19, 2026

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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