– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 pm Fri 23 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 4 pm Fri 23 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Very mild (max 13°C on Sat afternoon, min 5°C on Fri night). Wind will be generally light.											Days 5–7 Weather Summary Moderate rain (total 17mm), heaviest on Wed morning. Very mild (max 13°C on Mon afternoon, min 4°C on Wed morning). Wind will be generally light.
	Fri 23		Saturday 24			Sunday 25			Monday 26			Tuesday 27			Wednesday 28
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	clear	some clouds	cloudy	some clouds	some clouds	some clouds	cloudy	cloudy	cloudy	some clouds	some clouds	some clouds	rain shwrs	heavy rain	light rain	light rain
Cloud base (m)	800	6850	4800	2700		6600	6300	4650		3050	2650	1800	700	400	500	500	450
km/h	NW	E	S	SSW	ESE	ESE	ENE	E	NNW	WNW	WSW	WSW	SW	SSW	S	S	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.2	—	—	—	—	—	—	—	—	—	—	—	—	1.8	10	0.7	4
max °C	8	6	11	13	10	13	13	10	11	13	9	8	8	7	5	7	4
min °C	8	5	6	11	8	7	11	9	8	11	7	5	8	5	4	6	4
chill °C	7	5	6	11	7	6	11	9	8	11	7	5	7	3	1	5	3

Freezing level m	1800	2500	2550	2650	2600	2450	2400	2700	2600	2350	1900	1650	1600	1350	1250	1300	1200

	—	—	7:37	—	—	7:39	—	—	7:41	—	—	7:41	—	—	7:43	—	—
	6:05	—	—	6:02	—	—	6:00	—	—	5:59	—	—	5:58	—	—	5:55	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 13°C on Sat afternoon, min 5°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 17mm), heaviest on Wed morning. Very mild (max 13°C on Mon afternoon, min 4°C on Wed morning). 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 Airport 36 km WSW 218m alt. 3 hours ago	9°C	Clear	Calm (0 kph at 0).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	12°C	Dry	Calm (0 kph at 160).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	1°C	Clear	Wind obs. (6 kph from 1 degs) was rejected.	16 km
Monroe 44 km NW 80m alt. 1 hour ago	6°C	Dry	Calm (0 kph at 47).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	9°C	Clear	Calm (0 kph at 0).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	10°C	-	Calm (0 kph at 0).	16 km Low: few Mid: few
BUOY-EBSW1 46 km W 3m alt. 2 hours ago
Snohomish 49 km NW 196m alt. 48 minutes ago	2°C	-	Calm (0 kph at 290).
Seattle 49 km WSW 100m alt. 1 hour ago	17°C	-	Calm (0 kph at 69).
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	11°C		Calm (4 kph at 20).

* 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.