– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 3 pm Thu 05 Nov Local Time

Updates in:

hr min s

Update imminent

Issued: 3 pm Thu 05 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Heavy rain (total 33mm), heaviest during Sat night. Very mild (max 16°C on Sat morning, min 6°C on Sun morning). Winds increasing (calm on Fri night, fresh winds from the SW by Sat night).											Days 5–7 Weather Summary Light rain (total 7mm), mostly falling on Tue afternoon. Very mild (max 16°C on Wed morning, min 3°C on Sun night). Wind will be generally light.
	Thu 5		Friday 6			Saturday 7			Sunday 8			Monday 9			Tuesday 10
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	light rain	mod. rain	rain shwrs	cloudy	cloudy	heavy rain	rain shwrs	rain shwrs	some clouds	cloudy	clear	some clouds	light rain	light rain	some clouds
Cloud base (m)	1600	2950	1650	850	450	1850	7050	600	450	850	6750	5550	5950	2700	1800	650	2350
km/h	SW	SSE	S	S	SE	SE	SSE	SSW	SW	SW	E	SE	SE	SSE	SSE	SSE	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	0.2	0.7	7	4	—	—	18	4	0.4	—	—	—	—	3	3	—
max °C	10	9	10	10	12	16	14	8	7	6	4	10	9	9	8	10	11
min °C	9	7	8	10	10	14	13	7	6	5	3	8	6	6	8	9	10
chill °C	9	6	6	8	10	14	12	3	2	4	1	7	5	4	6	8	9

Freezing level m	1850	2600	2750	2900	2550	3000	2800	1550	1350	1300	1450	2200	2200	2450	2550	2750	2950

	—	—	6:58	—	—	7:00	—	—	7:01	—	—	7:03	—	—	7:03	—	—
	4:43	—	—	4:42	—	—	4:39	—	—	4:38	—	—	4:37	—	—	4:36	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 33mm), heaviest during Sat night. Very mild (max 16°C on Sat morning, min 6°C on Sun morning). Winds increasing (calm on Fri night, fresh winds from the SW by Sat night).

Mount Si Weather (Days 3-6):

Light rain (total 7mm), mostly falling on Tue afternoon. Very mild (max 16°C on Wed morning, min 3°C on Sun 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	11°C	Dry	Calm (0 kph at 137).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (3 kph at 254).
Renton Airport 36 km WSW 218m alt. 2 hours ago	12°C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: broken
Auburn 39 km SW 119m alt. 1 hour ago	5°C	Dry	Calm (0 kph at 240).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3°C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: broken
Monroe 44 km NW 80m alt. 1 hour ago	7°C	Dry	Calm (0 kph at 38).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	12°C	Dry and cloudy.	Light winds from the SSE (9 kph at 150).	16 km Low: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	12°C	Dry and cloudy.	Light winds from the S (9 kph at 190).	16 km Low: overcast
BUOY-EBSW1 46 km W 3m alt. 58 minutes ago
Snohomish 49 km NW 196m alt. 59 minutes ago	13°C	Dry	Calm (5 kph at 135).

* 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.