– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Fri 27 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Fri 27 Feb 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 6°C on Sun morning, min -1°C on Fri night). Wind will be generally light.											Days 5–7 Weather Summary A heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 5°C on Mon afternoon, min -2°C on Wed night). Winds increasing (calm on Mon afternoon, strong winds from the WSW by Wed afternoon).
	Fri 27		Saturday 28			Sunday 1			Monday 2			Tuesday 3			Wednesday 4
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	clear	some clouds	clear	clear	clear	clear	clear	clear	clear	some clouds	light rain	light snow	mod. snow	light snow	light snow	light snow
km/h	WSW	WSW	N	N	N	SSW	NW	NNW	NW	NW	WSW	SW	SW	SSW	SW	WSW	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	3	9	4	2	5
mm	—	—	—	—	—	—	—	—	—	—	—	0.1	—	—	—	—	—
max °C	0	1	4	5	4	6	6	4	5	5	5	3	2	1	0	-1	-2
min °C	0	-1	4	4	3	5	5	3	4	4	4	3	1	-1	-1	-1	-2
chill °C	-5	-4	1	1	3	5	2	0	1	3	3	-2	-6	-9	-8	-10	-10

Freezing level m	1300	1100	2450	2300	2350	2450	2300	2350	2100	2200	2250	1850	1600	1400	1200	1150	950
Cloud base (m)	700	950	700	8850							8750	1700	600	400	400	400	450

	—	—	6:48	—	—	6:47	—	—	6:45	—	—	6:43	—	—	6:41	—	—
	5:49	—	—	5:50	—	—	5:52	—	—	5:52	—	—	5:54	—	—	5:55	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Freeze-thaw conditions (max 6°C on Sun morning, min -1°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

A heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 5°C on Mon afternoon, min -2°C on Wed night). Winds increasing (calm on Mon afternoon, strong winds from the WSW by Wed afternoon).

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	8° C	Dry	Calm (0 kph at 344).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (3 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	11° C	Dry and cloudy.	Light winds from the SSW (9 kph at 200).	16 km Low: overcast
Auburn 39 km SW 119m alt. 47 minutes ago	12° C	Dry	Calm (0 kph at 52).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	-1° C	Moderate rain .	Light winds from the N (9 kph at 1).	16 km Low: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	11° C	Dry and partly cloudy.	Light winds from the N (7 kph at 1).	16 km Low: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	9° C	Dry and partly cloudy.	Light winds from the SSW (13 kph at 210).	16 km Low: broken
Snohomish 49 km NW 196m alt. 1 hour ago	8° C	Dry	Wind obs. (6 kph from 178 degs) was rejected.
SHIP10063 54 km W 15m alt. 3 hours ago			Light winds from the SSE (8 kph at 160).	- km
SHIP8399 54 km W 15m alt. 3 hours ago			Light winds from the SSE (8 kph at 160).	- 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.