– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 am Tue 10 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 am Tue 10 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Freeze-thaw conditions (max 3°C on Wed morning, min -1°C on Thu afternoon). Wind will be generally light.									Days 4–6 Weather Summary A moderate fall of snow, heaviest on Fri night. Temperatures will be below freezing (max 0°C on Fri morning, min -6°C on Sun night). Winds decreasing (fresh winds from the SW on Fri night, calm by Sun night).
	Tuesday 10			Wednesday 11			Thursday 12			Friday 13			Saturday 14			Sunday 15
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	some clouds	clear	some clouds	some clouds	clear	some clouds	light snow	light snow	snow shwrs	cloudy	cloudy	light snow	light snow	light snow	snow shwrs
km/h	ESE	E	ENE	E	ESE	SW	SW	SW	SW	SW	SSW	SW	SSE	ENE	SE	SSE	SSW	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	1	1	6	—	—	2	3	1	1
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	2	2	1	3	3	2	1	0	-1	0	-1	-1	-1	-1	-1	0	-1	-5
min °C	2	1	1	2	2	1	1	-1	-1	0	-1	-3	-1	-1	-1	-1	-2	-6
chill °C	-1	-2	-2	0	2	-2	-2	-5	-6	-6	-7	-8	-3	-4	-6	-3	-9	-12

Freezing level m	1550	1600	1550	1600	1750	1850	1350	1350	1150	1200	1150	950	1050	1150	1150	1100	1200	500
Cloud base (m)	4050	1800	400	9100	7950	7000	3550	1950	950	850	450	400	750	2050	500	400	550	650

	7:20	—	—	7:18	—	—	7:16	—	—	7:15	—	—	7:13	—	—	7:11	—	—
	—	5:22	—	—	5:23	—	—	5:24	—	—	5:27	—	—	5:29	—	—	5:30	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Freeze-thaw conditions (max 3°C on Wed morning, min -1°C on Thu afternoon). Wind will be generally light.

Mount Si Weather (Days 3-6):

A moderate fall of snow, heaviest on Fri night. Temperatures will be below freezing (max 0°C on Fri morning, min -6°C on Sun night). Winds decreasing (fresh winds from the SW on Fri night, calm by Sun night).

This table gives the weather forecast for Mount Si at the specific elevation of 1270 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of Mount Si. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.

Live conditions reported by 10 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 1 hour ago	6° C	Dry	Calm (0 kph at 187).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Wind obs. (6 kph from 360 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	6° C	Clear	Light winds from the N (6 kph at 10).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	13° C	Dry	Calm (2 kph at 191).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-2° C	Clear	Calm (0 kph at 0).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	6° C	-	Calm (0 kph at 0).	16 km Low: few
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	6° C	-	Light winds from the N (9 kph at 350).	16 km Low: few Mid: few
Snohomish 49 km NW 196m alt. 1 hour ago	8° C	Dry	Calm (3 kph at 39).
SHIP3407 54 km W 15m alt. 3 hours ago			Calm (2 kph at 310).	- km
SHIP2902 54 km W 15m alt. 2 hours ago			Calm (4 kph at 300).	- km

* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.