– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 am Sun 30 Nov Local Time
Updates in:
hr min s
Update imminent

Issued: 3 am Sun 30 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Light rain (total 7mm), mostly falling on Mon night. Mild temperatures (max 6°C on Sun morning, min 2°C on Tue night). Wind will be generally light.									Days 4–6 Weather Summary Heavy rain (total 61mm), heaviest during Fri night. Mild temperatures (max 8°C on Thu night, min 3°C on Wed afternoon). Winds increasing (calm on Wed night, fresh winds from the WSW by Thu night).
	Sunday 30			Monday 1			Tuesday 2			Wednesday 3			Thursday 4			Friday 5
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	clear	some clouds	cloudy	light rain	mod. rain	rain shwrs	rain shwrs	some clouds	cloudy	light rain	light rain	light rain	heavy rain	heavy rain	light rain	light rain	heavy rain
km/h	SSE	NW	NE	NNW	E	WSW	NNW	NW	E	SSW	SW	NW	S	SSW	WSW	WSW	SW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	0.1	7	0.2	0.1	—	—	0.2	0.2	2	12	24	5	2	15
max°C	6	4	4	4	4	4	4	4	4	4	3	4	5	6	8	6	6	6
min°C	4	3	3	4	4	4	4	4	2	4	3	3	5	6	5	5	6	4
chill°C	4	3	3	4	4	3	2	4	2	4	3	3	4	4	4	2	3	0

Freezing level (m)	1400	1550	1850	1500	1450	1300	1250	1050	1600	1500	1100	1350	1700	2000	2000	1450	1350	1250
Cloud base (m)	6800	6050	2500	2250	950	550	450	450	650	500	1850	450	400	400	350	400	400	400

	7:31	—	—	7:33	—	—	7:35	—	—	7:35	—	—	7:37	—	—	7:37	—	—
	—	4:17	—	—	4:16	—	—	4:16	—	—	4:16	—	—	4:15	—	—	4:15	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 7mm), mostly falling on Mon night. Mild temperatures (max 6°C on Sun morning, min 2°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 61mm), heaviest during Fri night. Mild temperatures (max 8°C on Thu night, min 3°C on Wed afternoon). Winds increasing (calm on Wed night, fresh winds from the WSW by Thu 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. 2 hours ago	-1° C	-	Calm (0 kph at 193).
Black Diamond 32 km SSW 192m alt. 1 hour ago	6° C	Dry	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 1 hour ago	-2° C	Mist -.	Light winds from the S (7 kph at 170).	3 km Low: broken
Auburn 39 km SW 119m alt. 2 hours ago	-3° C	-	Calm (0 kph at 51).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	-7° C	Dry and cloudy.	Wind obs. (6 kph from 30 degs) was rejected.	11 km Low: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 1 hour ago	-1° C	Mist -.	Calm (0 kph at 0).	5 km Low: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	1° C	-	Calm (0 kph at 0).	16 km Low: few
Snohomish 49 km NW 196m alt. 56 minutes ago	2° C	-	Calm (3 kph at 0).
Seattle 49 km WSW 100m alt. 48 minutes ago		-	Wind obs. (8 kph from 134 degs) was rejected.
BUOY-WPOW1 55 km W 3m alt. 40 minutes ago	3° C		Calm (2 kph at 170).

* 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.