– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Thu 04 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Thu 04 Dec Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Heavy rain (total 49mm), heaviest during Fri morning. Mild temperatures (max 9°C on Fri morning, min 5°C on Thu afternoon). Winds increasing (calm on Thu night, fresh winds from the WSW by Fri afternoon).											Days 5–7 Weather Summary Heavy rain (total 88mm), heaviest during Mon afternoon. Very mild (max 11°C on Mon afternoon, min 2°C on Tue night). Winds decreasing (strong winds from the SW on Mon afternoon, calm by Tue night).
	Thu 4		Friday 5			Saturday 6			Sunday 7			Monday 8			Tuesday 9
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	mod. rain	heavy rain	mod. rain	light rain	light rain	light rain	rain shwrs	mod. rain	mod. rain	mod. rain	mod. rain	mod. rain	heavy rain	mod. rain	light rain	light rain	heavy rain
km/h	WSW	SW	WSW	SW	WSW	SW	WSW	WSW	SSW	SW	S	S	SW	WSW	WSW	WSW	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	6	13	10	3	3	1.3	1.6	6	6	9	10	8	16	7	1.9	4	19
max°C	6	8	9	9	6	6	6	7	7	8	9	10	11	8	4	4	3
min°C	5	6	9	7	6	6	6	6	7	8	7	8	10	3	4	4	2
chill°C	4	5	6	2	1	2	3	4	6	6	6	6	6	-2	-1	-1	2

Freezing level (m)	1600	1850	2300	1900	1400	1300	1350	1500	1800	2050	1800	2150	2500	1550	1100	1050	900
Cloud base (m)	450	400	400	400	400	450	450	450	400	450	700	400	350	450	450	450	400

	—	—	7:37	—	—	7:39	—	—	7:39	—	—	7:41	—	—	7:41	—	—
	4:15	—	—	4:15	—	—	4:15	—	—	4:15	—	—	4:15	—	—	4:15	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 49mm), heaviest during Fri morning. Mild temperatures (max 9°C on Fri morning, min 5°C on Thu afternoon). Winds increasing (calm on Thu night, fresh winds from the WSW by Fri afternoon).

Mount Si Weather (Days 3-6):

Heavy rain (total 88mm), heaviest during Mon afternoon. Very mild (max 11°C on Mon afternoon, min 2°C on Tue night). Winds decreasing (strong winds from the SW on Mon afternoon, calm by Tue night).

This table gives the weather forecast for Mount Si at the specific elevation of 500 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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 45 minutes ago	6° C	Dry	Calm (0 kph at 220).
Black Diamond 32 km SSW 192m alt. 2 hours ago	12° C	Dry	Calm (3 kph at 0).
Renton Airport 36 km WSW 218m alt. 1 hour ago	8° C	Light rain .	Calm (0 kph at 0).	10 km Mid: broken High: overcast
Auburn 39 km SW 119m alt. 37 minutes ago	3° C	Dry	Calm (0 kph at 126).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	1° C	Light rain .	Wind obs. (7 kph from 1 degs) was rejected.	1 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	8° C	Light rain .	Light winds from the SSE (9 kph at 150).	5 km Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 1 hour ago	7° C	Light rain .	Light winds from the SSW (11 kph at 200).	8 km Mid: broken High: broken
Snohomish 49 km NW 196m alt. 1 hour ago	6° C	Dry	Calm (0 kph at 61).
Seattle 49 km WSW 100m alt. 1 hour ago	12° C	-
BUOY-WPOW1 55 km W 3m alt. 53 minutes ago	8° C		Moderate winds from the S (21 kph at 190).

* 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.