– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Fri 12 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Fri 12 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 27mm), heaviest during Mon morning. Very mild (max 14°C on Sat morning, min 8°C on Fri night). Winds increasing (light winds from the WSW on Fri night, fresh winds from the SW by Mon morning).											Days 5–7 Weather Summary Heavy rain (total 77mm), heaviest during Tue night. Later becoming colder with a dusting of snow on Thu morning. Mild temperatures (max 9°C on Mon afternoon, min 1°C on Tue night). Winds decreasing (fresh winds from the SW on Mon afternoon, light winds from the SSW by Tue morning).
	Fri 12		Saturday 13			Sunday 14			Monday 15			Tuesday 16			Wednesday 17
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	clear	some clouds	rain shwrs	light rain	cloudy	heavy rain	mod. rain	light rain	light rain	mod. rain	heavy rain	heavy rain	light rain	mod. rain	heavy rain
km/h	SW	SSW	SSW	SSW	SSW	S	SW	S	SSW	SW	SSW	SSW	SSW	WSW	SW	SW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.2	0.3	—	—	1.7	0.6	—	14	10	4	4	5	13	24	2	6	16
max°C	10	9	14	13	11	11	10	11	12	9	5	6	6	5	2	3	3
min°C	9	8	11	11	8	9	10	10	12	7	5	6	6	1	2	2	2
chill°C	8	7	10	10	6	8	9	8	10	3	1	4	2	-5	-4	-3	-2

Freezing level (m)	2800	3400	3200	3000	2550	2350	2350	2600	2800	1800	1250	1500	1750	850	850	900	1000
Cloud base (m)	650	750	8800		3400	800	1700	400	400	400	500	400	350	400	400	400	400

	—	—	7:46	—	—	7:47	—	—	7:48	—	—	7:48	—	—	7:48	—	—
	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 27mm), heaviest during Mon morning. Very mild (max 14°C on Sat morning, min 8°C on Fri night). Winds increasing (light winds from the WSW on Fri night, fresh winds from the SW by Mon morning).

Mount Si Weather (Days 3-6):

Heavy rain (total 77mm), heaviest during Tue night. Later becoming colder with a dusting of snow on Thu morning. Mild temperatures (max 9°C on Mon afternoon, min 1°C on Tue night). Winds decreasing (fresh winds from the SW on Mon afternoon, light winds from the SSW by Tue morning).

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. 1 hour ago	11° C	Dry	Calm (0 kph at 129).
Black Diamond 32 km SSW 192m alt. 48 minutes ago	12° C	Dry	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	11° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: scattered Mid: broken
Auburn 39 km SW 119m alt. 39 minutes ago	1° C	-	Calm (0 kph at 143).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	5° C	Dry and cloudy.	Light winds from the N.(Wind varies from 003 to 009 degs) (7 kph at 1).	16 km Low: broken Mid: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	12° C	Dry and partly cloudy.	Light winds from the SE (9 kph at 140).	16 km Low: scattered
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	12° C	Dry and partly cloudy.	Light winds from the SSE (13 kph at 160).	16 km Low: scattered Mid: broken
Snohomish 49 km NW 196m alt. 29 minutes ago	9° C	Dry	Calm (0 kph at 94).
Seattle 49 km WSW 100m alt. 31 minutes ago	13° C	-
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	12° C		Moderate winds from the SSE (22 kph at 160).

* 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.