– Lat/Long: 47.51° N 121.74° W

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

Issued: 3 pm Sun 30 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Moderate rain (total 10mm), heaviest on Mon night. Mild temperatures (max 5°C on Mon night, min 2°C on Tue night). Wind will be generally light.											Days 5–7 Weather Summary Heavy rain (total 48mm), heaviest during Thu night. Mild temperatures (max 9°C on Thu night, min 3°C on Wed afternoon). Winds increasing (calm on Wed afternoon, strong winds from the WSW by Thu night).
	Sun 30		Monday 1			Tuesday 2			Wednesday 3			Thursday 4			Friday 5
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	cloudy	cloudy	light rain	mod. rain	rain shwrs	rain shwrs	some clouds	cloudy	light rain	rain shwrs	light rain	mod. rain	heavy rain	light rain	light rain	mod. rain
km/h	NW	NNE	NNW	W	WSW	NNW	NW	E	W	NW	NE	SW	SSW	WSW	SW	SW	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	0.2	10	0.5	0.1	—	—	0.2	0.1	5	7	19	4	1	9
max°C	4	4	4	4	5	4	4	4	4	4	5	5	6	9	7	5	5
min°C	3	3	4	4	4	4	3	2	4	3	3	5	5	7	6	4	4
chill°C	3	3	4	4	2	2	3	2	4	3	3	4	4	4	1	-1	-1

Freezing level (m)	1550	1950	1400	1500	1450	1200	1100	1650	1550	1150	1350	1750	1700	2450	1650	1200	1100
Cloud base (m)	5200	2650	2100	850	450	500	500	700	550	950	700	900	400	400	350	400	400

	—	—	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: Moderate rain (total 10mm), heaviest on Mon night. Mild temperatures (max 5°C on Mon night, min 2°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 48mm), heaviest during Thu night. Mild temperatures (max 9°C on Thu night, min 3°C on Wed afternoon). Winds increasing (calm on Wed afternoon, strong 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. 1 hour ago	1° C	-	Calm (0 kph at 307).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Wind obs. (8 kph from 360 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	2° C	Clear	Light winds from the S (6 kph at 180).	16 km
Auburn 39 km SW 119m alt. 54 minutes ago	6° C	Dry	Calm (3 kph at 178).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-5° C	Clear	Calm (0 kph at 0).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	3° C	Clear	Calm (0 kph at 0).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	4° C	Dry and partly cloudy.	Light winds from the NNE (9 kph at 30).	16 km Low: scattered
Snohomish 49 km NW 196m alt. 2 hours ago	1° C	-	Calm (0 kph at 26).
Seattle 49 km WSW 100m alt. 1 hour ago	15° C	-
BUOY-WPOW1 55 km W 3m alt. 42 minutes ago	6° C		Light winds from the N (11 kph at 350).

* 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.