– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 9 am Thu 12 Nov Local Time

Updates in:

hr min s

Update imminent

Issued: 9 am Thu 12 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Heavy rain (total 27mm), heaviest during Fri afternoon. Very mild (max 12°C on Thu morning, min 2°C on Fri night). Mainly near gales.									Days 4–6 Weather Summary Mild with light rain (total 5mm) on Sun morning Becoming colder with a light covering of snow, mostly falling on Sun morning. Freeze-thaw conditions (max 3°C on Tue morning, min -1°C on Tue night). Mainly fresh winds.
	Thursday 12			Friday 13			Saturday 14			Sunday 15			Monday 16			Tuesday 17
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	cloudy	cloudy	cloudy	heavy rain	rain shwrs	rain shwrs	light rain	heavy rain	light snow	light snow	snow shwrs	some clouds	cloudy	clear	clear	clear	snow shwrs
Cloud base (m)	5900	5700	5850	2200	650	1350	700	450	650	400	400	700	500	900	1750	1950	8000	2200
km/h	S	ESE	SE	SE	S	SSE	SSW	SSE	SSE	SW	SW	SW	SSW	SW	SSW	SE	ESE	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	2	2	1	—	—	—	—	—	2
mm	—	—	—	—	12	1.5	0.5	2	11	5	—	—	—	—	—	—	—	—
max °C	12	12	12	8	4	5	3	4	5	2	1	1	1	1	1	3	3	2
min °C	11	11	10	5	3	2	2	3	4	2	1	0	1	1	1	2	2	-1
chill °C	10	9	5	2	1	-3	-3	-2	-1	-2	-5	-4	-4	-4	-3	-1	-4	-6

Freezing level m	2850	2950	3000	2400	2000	1950	1650	1700	2150	1700	1450	1400	1350	1450	1400	1600	1750	1150

	7:07	—	—	7:09	—	—	7:09	—	—	7:11	—	—	7:13	—	—	7:13	—	—
	—	4:34	—	—	4:31	—	—	4:30	—	—	4:30	—	—	4:29	—	—	4:28	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 27mm), heaviest during Fri afternoon. Very mild (max 12°C on Thu morning, min 2°C on Fri night). Mainly near gales.

Mount Si Weather (Days 3-6):

Mild with light rain (total 5mm) on Sun morning Becoming colder with a light covering of snow, mostly falling on Sun morning. Freeze-thaw conditions (max 3°C on Tue morning, min -1°C on Tue night). Mainly fresh winds.

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. 43 minutes ago	14°C	Dry	Calm (0 kph at 210).
Renton Airport 36 km WSW 218m alt. 3 hours ago	11°C	Clear	Light winds from the SE (9 kph at 140).	16 km
Auburn 39 km SW 119m alt. 54 minutes ago	16°C	Dry	Calm (0 kph at 355).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	3°C	Fog -.	Calm (0 kph at 0).	0 km
Monroe 44 km NW 80m alt. 1 hour ago	11°C	Dry	Calm (0 kph at 215).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	11°C	Clear	Light winds from the S (9 kph at 180).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	12°C	Dry and cloudy.	Light winds from the S (9 kph at 180).	16 km Low: broken Mid: overcast
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Parkwood Lane Mobile Home Park wx 46 km SW 111m alt. 2 hours ago	16°C	Dry	Calm (3 kph at 346).
Snohomish 49 km NW 196m alt. 1 hour ago	13°C	Dry	Calm (5 kph at 19).

* 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.