– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 10 pm Tue 27 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 10 pm Tue 27 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Heavy rain (total 28mm), heaviest during Tue night. Mild temperatures (max 9°C on Thu afternoon, min 2°C on Thu morning). Wind will be generally light.										Days 5–7 Weather Summary Light rain (total 7mm), mostly falling on Sat night. Very mild (max 12°C on Mon afternoon, min 3°C on Fri night). Wind will be generally light.
		Wednesday 28			Thursday 29			Friday 30			Saturday 31			Sunday 1
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	light rain	light rain	rain shwrs	clear	rain shwrs	clear	rain shwrs	rain shwrs	rain shwrs	some clouds	light rain	mod. rain	rain shwrs	clear	some clouds
Cloud base (m)	400	550	550	600		1700		800	450	800	1500	800	450	500	8500	7950
km/h	SSW	SW	SSW	SSE	ESE	ESE	ESE	SE	S	SE	ESE	N	W	NW	NNW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	17	3	3	1	—	0.1	—	0.1	4	0.1	—	0.3	6	0.2	—	—
max °C	6	6	6	5	7	9	4	6	6	4	7	7	5	6	7	5
min °C	4	5	5	3	2	8	3	4	4	3	3	6	4	4	7	4
chill °C	0	2	2	1	0	7	0	3	4	1	1	6	4	4	7	4

Freezing level m	1400	1300	1300	1100	1400	1500	1550	1400	1300	1550	1400	1300	1150	1250	1550	3250

	—	7:43	—	—	7:45	—	—	7:47	—	—	7:48	—	—	6:50	—	—
	—	—	5:55	—	—	5:53	—	—	5:52	—	—	5:51	—	—	4:50	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 28mm), heaviest during Tue night. Mild temperatures (max 9°C on Thu afternoon, min 2°C on Thu morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 7mm), mostly falling on Sat night. Very mild (max 12°C on Mon afternoon, min 3°C on Fri night). Wind will be generally light.

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. 2 hours ago	8°C	Dry	Calm (3 kph at 245).
Renton Airport 36 km WSW 218m alt. 3 hours ago	9°C	Dry and cloudy.	Light winds from the SSE (15 kph at 150).	16 km Low: few Mid: broken High: overcast
Auburn 39 km SW 119m alt. 43 minutes ago	3°C	Dry	Calm (0 kph at 208).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	0°C	Light snow.	Calm (0 kph at 0).	1 km
Monroe 44 km NW 80m alt. 2 hours ago	13°C	Dry	Calm (0 kph at 44).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	9°C	Dry and cloudy.	Light winds from the S (19 kph at 180).	16 km Low: scattered Mid: broken High: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	8°C	Dry and partly cloudy.	Moderate winds from the S (28 kph at 170).	16 km Low: scattered Mid: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	6°C	Dry	Calm (0 kph at 109).
Lake Forest Park wx 49 km WNW 147m alt. 3 hours ago	9°C	Dry	Calm (2 kph at 0).

* 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.