– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Thu 26 Mar Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Thu 26 Mar Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Freeze-thaw conditions (max 5°C on Fri morning, min -1°C on Thu afternoon). Wind will be generally light.											Days 5–7 Weather Summary A moderate fall of snow, heaviest on Sun afternoon. Becoming mild with drizzle, on Tue night. Freeze-thaw conditions (max 4°C on Tue night, min -5°C on Mon morning). Winds decreasing (strong winds from the SW on Sun night, calm by Mon night).
	Thu 26		Friday 27			Saturday 28			Sunday 29			Monday 30			Tuesday 31
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	clear	cloudy	some clouds	some clouds	some clouds	some clouds	cloudy	light snow	mod. snow	light snow	snow shwrs	clear	some clouds	cloudy	light rain
km/h	SW	SE	SE	S	NW	WNW	WSW	SW	SSW	SW	SW	SW	NW	N	ESE	ESE	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	2	8	3	1	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1.3
max °C	0	2	5	5	4	1	1	1	1	0	-2	-4	-4	-4	-1	2	4
min °C	-1	-1	3	4	1	1	1	-1	0	-1	-2	-5	-5	-4	-3	1	2
chill °C	-1	-3	0	3	-2	-2	-1	-4	-2	-4	-7	-11	-10	-9	-6	-2	-3

Freezing level m	1300	1750	2200	2200	1850	1400	1400	1100	1350	1100	950	500	850	0	1100	1650	1850
Cloud base (m)	900	450	4150	5900	4600	700	900	750	950	700	400	400	500	400	4650	4400	1600

	—	—	6:56	—	—	6:54	—	—	6:52	—	—	6:50	—	—	6:48	—	—
	7:27	—	—	7:29	—	—	7:30	—	—	7:31	—	—	7:32	—	—	7:34	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Freeze-thaw conditions (max 5°C on Fri 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 Sun afternoon. Becoming mild with drizzle, on Tue night. Freeze-thaw conditions (max 4°C on Tue night, min -5°C on Mon morning). Winds decreasing (strong winds from the SW on Sun night, calm by Mon 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. 2 hours ago	3° C	Dry	Calm (0 kph at 72).
Renton 30 km WSW 160m alt. 2 hours ago	4° C	-	Calm (0 kph at 70).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	7° C	Clear	Calm (0 kph at 0).	16 km
Auburn 39 km SW 119m alt. 43 minutes ago		-	Calm (0 kph at 49).
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	8° C	Clear	Calm (0 kph at 0).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	9° C	-	Light winds from the NNE (9 kph at 30).	16 km Low: few
Snohomish 49 km NW 196m alt. 2 hours ago	4° C	Dry	Calm (0 kph at 76).
BUOY-WPOW1 55 km W 3m alt. 48 minutes ago	8° C		Light winds from the N (8 kph at 10).

* 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.