– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Sat 28 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Sat 28 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 2mm), mostly falling on Tue morning. Mild temperatures (max 6°C on Sat afternoon, min 3°C on Sat night). Winds increasing (calm on Mon afternoon, strong winds from the SW by Tue morning).											Days 5–7 Weather Summary A heavy fall of snow, heaviest during Thu night. Freeze-thaw conditions (max 2°C on Tue afternoon, min -3°C on Wed night). Winds decreasing (strong winds from the WSW on Wed night, light winds from the NW by Fri morning).
	Sat 28		Sunday 1			Monday 2			Tuesday 3			Wednesday 4			Thursday 5
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

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

Freezing level m	2350	2250	2350	2300	2500	2350	2300	2100	1700	1500	1400	1300	1300	1050	850	1050	1200
Cloud base (m)	8550					6750		7900	750	450	450	400	400	450	450	550	400

	—	—	6:47	—	—	6:45	—	—	6:43	—	—	6:41	—	—	6:39	—	—
	5:50	—	—	5:52	—	—	5:52	—	—	5:54	—	—	5:55	—	—	5:58	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 2mm), mostly falling on Tue morning. Mild temperatures (max 6°C on Sat afternoon, min 3°C on Sat night). Winds increasing (calm on Mon afternoon, strong winds from the SW by Tue morning).

Mount Si Weather (Days 3-6):

A heavy fall of snow, heaviest during Thu night. Freeze-thaw conditions (max 2°C on Tue afternoon, min -3°C on Wed night). Winds decreasing (strong winds from the WSW on Wed night, light winds from the NW by Fri morning).

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	12° C	Dry	Calm (0 kph at 156).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Light winds from the NNW (6 kph at 329).
Renton Airport 36 km WSW 218m alt. 2 hours ago	11° C	Clear	Moderate winds from the NNW (24 kph at 330).	16 km
Auburn 39 km SW 119m alt. 2 hours ago		-	Calm (3 kph at 27).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3° C	Moderate rain .	Calm (0 kph at 0).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	11° C	Clear	Light winds from the NW (13 kph at 310).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	11° C	Dry and partly cloudy.	Moderate winds from the NNW (20 kph at 340).	16 km Low: broken
Snohomish 49 km NW 196m alt. 1 hour ago	11° C	Dry	Light winds from the W (8 kph at 259).
Seattle 49 km WSW 100m alt. 1 hour ago	22° C	-	Calm (0 kph at 107).
SHIP3766 54 km W 15m alt. 3 hours ago			Light winds from the WNW (19 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.