– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 pm Sat 31 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 4 pm Sat 31 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Mild temperatures (max 8°C on Mon afternoon, min 2°C on Sun morning). Wind will be generally light.											Days 5–7 Weather Summary Light rain (total 8mm), mostly falling on Thu night. Mild temperatures (max 6°C on Tue afternoon, min 2°C on Tue night). Winds increasing (calm on Tue afternoon, fresh winds from the SW by Thu night).
	Sat 31		Sunday 1			Monday 2			Tuesday 3			Wednesday 4			Thursday 5
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	clear	clear	clear	some clouds	some clouds	cloudy	some clouds	cloudy	some clouds	some clouds	clear	cloudy	light rain	rain shwrs	cloudy	light rain
Cloud base (m)	1800	2200				5650	5300	2900	2000	2150	900	900	1950	600	650	3350	2300
km/h	E	ENE	NNW	NW	N	SE	SSE	SE	SSW	SW	SW	SW	SW	WSW	S	SW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	0.9	0.2	—	4
max °C	4	4	4	4	4	7	8	6	5	6	3	4	5	5	5	5	4
min °C	4	3	2	4	3	6	7	5	5	5	2	3	5	4	4	5	3
chill °C	2	3	-1	2	1	6	6	4	3	3	-1	1	1	-1	2	3	-2

Freezing level m	1900	1900	1900	2000	3200	3350	3150	2350	2200	2150	1850	2250	2250	2200	2300	2300	2150

	—	—	6:50	—	—	7:50	—	—	7:52	—	—	7:54	—	—	7:56	—	—
	5:51	—	—	4:50	—	—	5:47	—	—	5:46	—	—	5:45	—	—	5:44	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Mild temperatures (max 8°C on Mon afternoon, min 2°C on Sun morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 8mm), mostly falling on Thu night. Mild temperatures (max 6°C on Tue afternoon, min 2°C on Tue night). Winds increasing (calm on Tue afternoon, fresh winds from the SW by Thu night).

This table gives the weather forecast for Mount Si at the specific elevation of 1270 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	7°C	Dry	Calm (0 kph at 0).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (2 kph at 0).
Renton Airport 36 km WSW 218m alt. 3 hours ago	9°C	Clear	Light winds from the N (11 kph at 1).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	13°C	Dry	Calm (0 kph at 196).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	0°C	Mist -.	Calm (0 kph at 0).	2 km Low: broken Mid: broken
Monroe 44 km NW 80m alt. 46 minutes ago	5°C	Dry	Calm (0 kph at 203).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	8°C	Clear	Calm (0 kph at 0).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	8°C	Dry and partly cloudy.	Light winds from the N (19 kph at 10).	16 km Low: scattered
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	4°C	Dry	Calm (3 kph at 23).

* 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.