– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Fri 03 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Fri 03 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Very mild (max 13°C on Sun afternoon, min 2°C on Fri afternoon). Wind will be generally light.											Days 5–7 Weather Summary Drizzle at first, then turning colder with dusting of snow on Mon night. Freeze-thaw conditions (max 10°C on Mon afternoon, min -5°C on Tue morning). Winds decreasing (fresh winds from the SW on Mon night, calm by Wed night).
	Fri 3		Saturday 4			Sunday 5			Monday 6			Tuesday 7			Wednesday 8
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	clear	clear	some clouds	some clouds	cloudy	some clouds	clear	rain shwrs	snow shwrs	some clouds	clear	some clouds	clear	clear	clear
km/h	WSW	NW	NNE	E	ESE	ESE	ESE	S	SW	WSW	SW	W	WNW	N	E	NNW	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	1	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	0.8	0.3	—	—	—	—	—	—
max °C	3	3	6	8	10	12	13	12	10	10	6	-4	0	-1	-1	2	2
min °C	2	2	4	6	8	10	12	10	9	9	-4	-5	-2	-2	-2	2	1
chill °C	1	2	2	6	8	9	11	9	7	6	-11	-11	-5	-4	-4	0	1

Freezing level m	1700	1900	2400	2750	3050	3100	3100	3000	2750	2600	1350	850	1300	900	1200	1550	1550
Cloud base (m)	1800	1000	7050	6900	5800	6450	6750	5650	5700	1800	650	500	550	750	700	900	950

	—	—	6:39	—	—	6:37	—	—	6:35	—	—	6:33	—	—	6:31	—	—
	7:38	—	—	7:39	—	—	7:40	—	—	7:43	—	—	7:44	—	—	7:45	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 13°C on Sun afternoon, min 2°C on Fri afternoon). Wind will be generally light.

Mount Si Weather (Days 3-6):

Drizzle at first, then turning colder with dusting of snow on Mon night. Freeze-thaw conditions (max 10°C on Mon afternoon, min -5°C on Tue morning). Winds decreasing (fresh winds from the SW on Mon night, calm by Wed 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. 17 minutes ago	8° C	Dry	Calm (0 kph at 343).
Renton 30 km WSW 160m alt. 1 hour ago	9° C	Dry	Calm (0 kph at 29).
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	11° C	Clear	Calm (0 kph at 0).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	7° C	Dry	Calm (0 kph at 61).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3° C	Clear	Calm (0 kph at 0).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	12° C	Clear	Calm (0 kph at 0).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	11° C	-	Calm (0 kph at 0).	16 km Low: few Mid: few High: scattered
Snohomish 49 km NW 196m alt. 2 hours ago	10° C	Dry	Calm (2 kph at 337).
BUOY-WPOW1 55 km W 3m alt. 36 minutes ago	10° C		Light winds from the NE (18 kph at 40).

* 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.