Issued: 7:01 AM PST Monday, December 5, 2022
by Robert Hahn

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

Weather Synopsis

The Pacific Northwest should experience cool, but relatively quiet weather in the short term with active weather returning on Thursday. A weakening low remains parked over northern California. Some low clouds and moisture linger from a disturbance that fizzled over the area Sunday night. However, with little in the way of upper-level forcing, these clouds can really only touch off isolated snow flurries from around Paradise to Mt. Rainier. Most other areas will see partly cloudy to mostly sunny skies. An inversion east of the Cascades will keep very cold temperatures in deep valley locations where the Methow wakes up with temperatures a few degrees below zero while most mountain locations are in the 10s and 20s. Weak NW flow begins later Monday and gradually increases through Tuesday, allowing for very gradually increasing chances of snow flurries or very light snow along the west slopes of the Cascades, primarily later Monday night and Tuesday. Most areas can expect an inch or less of snow. The NW wind will also help dissipate the inversion 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 Mostly sunny with some low cloud cover below 4000 ft.
Monday Night Mostly clear with some low cloud cover below 4000 ft.
Monday Mostly sunny with some low cloud cover below 4000 ft during the morning hours.
Monday Night Increasing clouds with a chance of snow flurries by morning.
Monday Mostly sunny northern part with increasing low clouds southern part.
Monday Night Mostly cloudy with an increasing chance of very light snow showers or flurries.
Monday Partly to mostly cloudy with a chance of snow flurries.
Monday Night Mostly cloudy with an increasing chance of very light snow showers or flurries. Much of Mt. Rainier likely pops above the cloud deck.
Monday Mostly sunny in the morning with low clouds increasing during the afternoon. Light W ridgeline and E winds at the Pass.
Monday Night Mostly cloudy with an increasing chance of very light snow showers or flurries. Light ridgeline and variable or W wind at the Pass.
Monday Partly to mostly cloudy with a chance of snow flurries. Light W ridgeline and E winds at the Pass.
Monday Night Mostly cloudy with an increasing chance of very light snow showers or flurries. Light to occasionally moderate ridgeline and variable or light W wind at the Pass.
Monday Mostly sunny. Cold with an inversion to start the day.
Monday Night Partly cloudy to mostly clear.
Monday A mix of clouds and sun with a stratus deck in some areas below 4000 ft.
Monday Night Partly cloudy to mostly clear.
Monday A mix of clouds and sun with a stratus deck in some areas below 4000 ft.
Monday Night Partly cloudy to mostly clear.
Monday Mostly sunny with some low clouds below 4000 ft.
Monday Night Partly cloudy with a chance of snow showers on the west slopes of Mt. Hood.

Precipitation (in)

Monday Monday Night Tuesday
4 am - 4 pm 4 pm - 4 am 4 am - 4 pm
Hurricane Ridge 0 0 0
Mt Baker Ski Area 0 0 LT 0.10
Mt. Loop - Barlow Pass 0 0 LT 0.10
Stevens Pass 0 LT 0.10 LT 0.10
Snoqualmie Pass LT 0.10 LT 0.10 LT 0.10
Crystal Mt 0 LT 0.10 LT 0.10
Paradise LT 0.10 LT 0.10 LT 0.10
White Pass 0 LT 0.10 LT 0.10
Washington Pass 0 0 LT 0.10
Mission Ridge 0 0 0
Salmon la Sac - Gallagher Head 0 0 LT 0.10
Tieton River - Darland Mt. 0 0 0
Mt Hood Meadows 0 0 LT 0.10
Timberline 0 LT 0.10 LT 0.10
Hurricane Ridge Precipitation (in)
Monday 0
Monday Night 0
Tuesday 0
Mt Baker Ski Area Precipitation (in)
Monday 0
Monday Night 0
Tuesday LT 0.10
Mt. Loop - Barlow Pass Precipitation (in)
Monday 0
Monday Night 0
Tuesday LT 0.10
Stevens Pass Precipitation (in)
Monday 0
Monday Night LT 0.10
Tuesday LT 0.10
Snoqualmie Pass Precipitation (in)
Monday LT 0.10
Monday Night LT 0.10
Tuesday LT 0.10
Crystal Mt Precipitation (in)
Monday 0
Monday Night LT 0.10
Tuesday LT 0.10
Paradise Precipitation (in)
Monday LT 0.10
Monday Night LT 0.10
Tuesday LT 0.10
White Pass Precipitation (in)
Monday 0
Monday Night LT 0.10
Tuesday LT 0.10
Washington Pass Precipitation (in)
Monday 0
Monday Night 0
Tuesday LT 0.10
Mission Ridge Precipitation (in)
Monday 0
Monday Night 0
Tuesday 0
Salmon la Sac - Gallagher Head Precipitation (in)
Monday 0
Monday Night 0
Tuesday LT 0.10
Tieton River - Darland Mt. Precipitation (in)
Monday 0
Monday Night 0
Tuesday 0
Mt Hood Meadows Precipitation (in)
Monday 0
Monday Night 0
Tuesday LT 0.10
Timberline Precipitation (in)
Monday 0
Monday Night LT 0.10
Tuesday LT 0.10

Snow Level (ft)

Monday Morning* Monday Afternoon* Monday Evening Monday Night Tuesday Morning Tuesday Afternoon
Olympics 1500' 3000' 2000' 1500' 1500' 1500'
West North 500' 2500' 1500' 1500' 500' 500'
West Central 500' 2500' 2000' 2000' 1000' 500'
West South 500' 3000' 2500' 2000' 1000' 1000'
Stevens Pass 500' 2000' 2500' 1500' 1000' 1000'
Snoqualmie Pass 500' 1500' 2000' 1500' 1500' 1000'
East North 0 2000' 1000' 500' 1000' 1000'
East Central 500' 2000' 2000' 1500' 1000' 500'
East South 1000' 3000' 2500' 2500' 2000' 1500'
Mt. Hood 1500' 3000' 3000' 2000' 2000' 1500'
Olympics Elevation
Monday Morning* 1500'
Monday Afternoon* 3000'
Monday Evening 2000'
Monday Night 1500'
Tuesday Morning 1500'
Tuesday Afternoon 1500'
West North Elevation
Monday Morning* 500'
Monday Afternoon* 2500'
Monday Evening 1500'
Monday Night 1500'
Tuesday Morning 500'
Tuesday Afternoon 500'
West Central Elevation
Monday Morning* 500'
Monday Afternoon* 2500'
Monday Evening 2000'
Monday Night 2000'
Tuesday Morning 1000'
Tuesday Afternoon 500'
West South Elevation
Monday Morning* 500'
Monday Afternoon* 3000'
Monday Evening 2500'
Monday Night 2000'
Tuesday Morning 1000'
Tuesday Afternoon 1000'
Stevens Pass Elevation
Monday Morning* 500'
Monday Afternoon* 2000'
Monday Evening 2500'
Monday Night 1500'
Tuesday Morning 1000'
Tuesday Afternoon 1000'
Snoqualmie Pass Elevation
Monday Morning* 500'
Monday Afternoon* 1500'
Monday Evening 2000'
Monday Night 1500'
Tuesday Morning 1500'
Tuesday Afternoon 1000'
East North Elevation
Monday Morning* 0'
Monday Afternoon* 2000'
Monday Evening 1000'
Monday Night 500'
Tuesday Morning 1000'
Tuesday Afternoon 1000'
East Central Elevation
Monday Morning* 500'
Monday Afternoon* 2000'
Monday Evening 2000'
Monday Night 1500'
Tuesday Morning 1000'
Tuesday Afternoon 500'
East South Elevation
Monday Morning* 1000'
Monday Afternoon* 3000'
Monday Evening 2500'
Monday Night 2500'
Tuesday Morning 2000'
Tuesday Afternoon 1500'
Mt. Hood Elevation
Monday Morning* 1500'
Monday Afternoon* 3000'
Monday Evening 3000'
Monday Night 2000'
Tuesday Morning 2000'
Tuesday Afternoon 1500'

5000' Temperatures (°F)

Monday Monday Night
Max / Min Max / Min
Olympics 31 / 25 22 / 16
West North 26 / 23 17 / 14
West Central 26 / 21 21 / 15
West South 30 / 25 24 / 22
Stevens Pass 27 / 18 23 / 21
Snoqualmie Pass 27 / 23 24 / 23
East North 26 / 11 19 / 18
East Central 28 / 20 22 / 20
East South 31 / 25 22 / 20
Mt. Hood 33 / 23 25 / 23
Olympics 5000' Temperature Forecast
(Max / Min)
Monday 31 / 25
Monday Night 22 / 16
West North 5000' Temperature Forecast
(Max / Min)
Monday 26 / 23
Monday Night 17 / 14
West Central 5000' Temperature Forecast
(Max / Min)
Monday 26 / 21
Monday Night 21 / 15
West South 5000' Temperature Forecast
(Max / Min)
Monday 30 / 25
Monday Night 24 / 22
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Monday 27 / 18
Monday Night 23 / 21
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Monday 27 / 23
Monday Night 24 / 23
East North 5000' Temperature Forecast
(Max / Min)
Monday 26 / 11
Monday Night 19 / 18
East Central 5000' Temperature Forecast
(Max / Min)
Monday 28 / 20
Monday Night 22 / 20
East South 5000' Temperature Forecast
(Max / Min)
Monday 31 / 25
Monday Night 22 / 20
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Monday 33 / 23
Monday Night 25 / 23

Ridgeline Winds (mph)

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

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

Previous forecast from Dec 4, 2022

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