– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 10 pm Mon 19 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 10 pm Mon 19 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 17°C on Tue afternoon, min 9°C on Mon night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Very mild (max 16°C on Sun afternoon, min 4°C on Fri morning). Wind will be generally light.
		Tuesday 20			Wednesday 21			Thursday 22			Friday 23			Saturday 24
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	clear	clear	clear	clear	clear	clear	clear	some clouds	some clouds	some clouds	some clouds	clear	clear	clear	some clouds
Cloud base (m)	7000	6350					8600	8450		1500	1000	900		6700	6100	6650
km/h	E	ESE	NE	ESE	WSW	W	SE	NW	NNW	NW	NW	NNW	E	N	NE	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	10	15	17	13	16	17	12	11	12	9	7	8	6	11	14	10
min °C	9	9	16	12	12	17	10	9	10	5	4	8	5	6	13	8
chill °C	9	8	16	12	12	17	10	9	9	3	4	7	5	5	13	7

Freezing level m	2800	3050	3150	3150	3100	3200	3100	2800	2450	1800	1400	1500	3000	3200	3300	3350

	—	7:31	—	—	7:33	—	—	7:35	—	—	7:35	—	—	7:37	—	—
	—	—	6:09	—	—	6:07	—	—	6:06	—	—	6:05	—	—	6:02	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 17°C on Tue afternoon, min 9°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 16°C on Sun afternoon, min 4°C on Fri 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. 2 hours ago	10°C	Clear	Light winds from the N (6 kph at 10).	16 km
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3°C	Clear	Calm (0 kph at 0).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	8°C	Clear	Calm (0 kph at 0).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	9°C	Clear	Light winds from the NE (11 kph at 50).	16 km
BUOY-EBSW1 46 km W 3m alt. 3 hours ago
BUOY-WPOW1 55 km W 3m alt. 3 hours ago	12°C		Moderate winds from the N (28 kph at 10).
BUOY-TCNW1 57 km SW 3m alt. 3 hours ago
BUOY-TCMW1 57 km SW 3m alt. 3 hours ago	11°C		Calm (4 kph at 60).
Pierce County Airport - Thun Field - Puyallup (Washington) 61 km SSW 164m alt. 1 hour ago		Light rain .	Calm (0 kph at 0).	16 km
Everett Airport 61 km WNW 218m alt. 2 hours ago	8°C	Dry and partly cloudy.	Light winds from the N (7 kph at 350).	16 km Low: broken

* 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.