– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 10 pm Fri 30 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 10 pm Fri 30 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Some drizzle, heaviest during Fri night. Very mild (max 12°C on Mon afternoon, min 4°C on Fri night). Wind will be generally light.										Days 5–7 Weather Summary Light rain (total 6mm), mostly falling on Wed night. Very mild (max 14°C on Tue afternoon, min 8°C on Mon night). Wind will be generally light.
		Saturday 31			Sunday 1			Monday 2			Tuesday 3			Wednesday 4
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	some clouds	some clouds	some clouds	clear	clear	some clouds	cloudy	cloudy	cloudy	cloudy	some clouds	cloudy	cloudy	cloudy	rain shwrs
Cloud base (m)	1650		6300	4000				6100	5600	2550	4350	3400	5300	2200	1500	400
km/h	ESE	ESE	N	ENE	NNW	NW	E	SE	ESE	ESE	SE	NE	SSE	SW	SSW	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	1.3	—	—	—	—	—	—	—	—	—	—	—	—	—	—	6
max °C	6	8	10	6	7	9	5	10	12	9	12	14	10	10	11	10
min °C	4	4	8	5	4	8	5	6	10	8	9	12	8	8	11	8
chill °C	3	2	8	5	4	8	5	5	10	7	8	12	8	7	11	8

Freezing level m	1550	1700	1900	1900	1800	1950	2850	3250	3150	2700	2700	2800	2500	2000	2150	2100

	—	7:48	—	—	6:50	—	—	7:50	—	—	7:52	—	—	7:54	—	—
	—	—	5:51	—	—	4:50	—	—	5:47	—	—	5:46	—	—	5:45	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Fri night. Very mild (max 12°C on Mon afternoon, min 4°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 6mm), mostly falling on Wed night. Very mild (max 14°C on Tue afternoon, min 8°C on Mon 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. 36 minutes ago	3°C	Dry	Calm (0 kph at 91).
Black Diamond 32 km SSW 192m alt. 43 minutes ago	18°C	Dry	Calm (3 kph at 138).
Renton Airport 36 km WSW 716m alt. 2 hours ago	5°C	Mist -.	Calm (0 kph at 0).	8 km Low: few
Auburn 39 km SW 119m alt. 52 minutes ago	11°C	Dry	Calm (0 kph at 190).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-1°C	Mist -.	Calm (0 kph at 0).	5 km Low: scattered
Monroe 44 km NW 80m alt. 1 hour ago	6°C	Dry	Calm (0 kph at 32).
Seattle Tacoma International Airport 44 km WSW 716m alt. 2 hours ago	6°C	Clear	Light winds from the ENE (6 kph at 60).	16 km
Seattl / oeing Airport 44 km WSW 716m alt. 2 hours ago	4°C	Mist -.	Calm (0 kph at 0).	6 km Low: scattered
SHIP4065 44 km SW 15m alt. 2 hours ago				- km
BUOY-EBSW1 46 km W 3m alt. 2 hours ago

* 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.