– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 9 pm Tue 03 Nov Local Time

Updates in:

hr min s

Update imminent

Issued: 9 pm Tue 03 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 9mm), mostly falling on Wed night. Very mild (max 13°C on Wed morning, min 6°C on Thu night). Wind will be generally light.										Days 5–7 Weather Summary Heavy rain (total 20mm), heaviest during Sat night. Very mild (max 16°C on Sat morning, min 4°C on Sun night). Winds decreasing (fresh winds from the SW on Sat night, calm by Mon afternoon).
		Wednesday 4			Thursday 5			Friday 6			Saturday 7			Sunday 8
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	light rain	rain shwrs	light rain	light rain	some clouds	light rain	light rain	mod. rain	some clouds	some clouds	rain shwrs	rain shwrs	rain shwrs	some clouds
Cloud base (m)		9250	2750	450	500	550	3500	2650	1550	450	700		1550	650	850
km/h	ESE	S	WSW	SSW	SW	SSW	SE	SSE	S	SSE	SE	SE	SW	SW	SW	ENE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	0.1	6	1.4	0.4	—	0.6	0.3	6	—	—	11	3	0.5	—
max °C	8	13	11	8	9	8	8	9	10	11	16	14	11	7	6	5
min °C	7	12	9	7	7	8	6	9	10	9	13	12	6	7	5	4
chill °C	7	12	8	4	5	8	5	8	10	8	13	11	2	4	5	4

Freezing level m	2800	2700	2250	1700	1650	1700	2550	2500	2900	2800	3200	3150	1800	1350	1300	1850

	—	6:54	—	—	6:56	—	—	6:58	—	—	7:00	—	—	7:01	—	—
	—	—	4:44	—	—	4:43	—	—	4:42	—	—	4:39	—	—	4:38	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 9mm), mostly falling on Wed night. Very mild (max 13°C on Wed morning, min 6°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 20mm), heaviest during Sat night. Very mild (max 16°C on Sat morning, min 4°C on Sun night). Winds decreasing (fresh winds from the SW on Sat night, calm by Mon afternoon).

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 10 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Renton 30 km WSW 160m alt. 1 hour ago	5°C	Dry	Calm (0 kph at 47).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	5°C	Clear	Calm (0 kph at 0).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	1°C	-	Calm (0 kph at 175).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3°C	Clear	Calm (0 kph at 0).	16 km
Monroe 44 km NW 80m alt. 1 hour ago	7°C	Dry	Calm (0 kph at 157).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	4°C	Clear	Calm (0 kph at 0).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	7°C	Clear	Calm (0 kph at 0).	16 km
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	-1°C	-	Calm (0 kph at 36).

* 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.