– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 am Thu 01 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 4 am Thu 01 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Warm (max 21°C on Sat afternoon, min 12°C on Thu night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 23°C on Sun afternoon, min 12°C on Mon night). Wind will be generally light.
	Thursday 1			Friday 2			Saturday 3			Sunday 4			Monday 5			Tuesday 6
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	some clouds	some clouds	clear	some clouds	clear	clear	clear	clear	clear	clear	some clouds	some clouds	rain shwrs	cloudy	some clouds	some clouds
Cloud base (m)	2450	2000	6350	4150	7750	8500	8200	9400				6550	5900		450	6550	5900
km/h	S	WSW	SSE	SW	W	E	ESE	N	ESE	S	WNW	SSE	W	W	WNW	NNW	NNW	NE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.2	—	—	—
max °C	16	19	14	17	19	14	19	21	16	21	23	17	17	19	14	15	16	12
min °C	13	18	12	13	18	13	13	21	15	15	22	15	14	18	12	12	15	12
chill °C	13	18	12	13	18	13	13	21	15	15	22	15	14	18	12	12	15	12

Freezing level m	3550	3500	3500	3400	3400	4000	4050	4100	4200	4150	4150	4100	3700	3600	3900	3850	3850	4000

	7:05	—	—	7:05	—	—	7:07	—	—	7:09	—	—	7:09	—	—	7:11	—	—
	—	6:46	—	—	6:45	—	—	6:43	—	—	6:40	—	—	6:38	—	—	6:37	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 21°C on Sat afternoon, min 12°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 23°C on Sun afternoon, min 12°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. 1 hour ago	11°C	Dry	Calm (0 kph at 180).
Renton Airport 36 km WSW 218m alt. 3 hours ago	11°C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: overcast
Auburn 39 km SW 119m alt. 52 minutes ago	11°C	Dry	Calm (0 kph at 198).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	6°C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: overcast
Monroe 44 km NW 80m alt. 1 hour ago	17°C	Dry	Calm (0 kph at 252).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	12°C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	11°C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: broken Mid: broken High: overcast
BUOY-EBSW1 46 km W 3m alt. 2 hours ago
Parkwood Lane Mobile Home Park wx 46 km SW 111m alt. 1 hour ago	12°C	Dry	Calm (0 kph at 312).
Snohomish 49 km NW 196m alt. 54 minutes ago	8°C	Dry	Calm (0 kph at 84).

* 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.