– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 pm Mon 05 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 4 pm Mon 05 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Warm (max 20°C on Wed afternoon, min 12°C on Tue morning). Wind will be generally light.											Days 5–7 Weather Summary Moderate rain (total 11mm), heaviest on Fri night. Warm (max 22°C on Thu afternoon, min 5°C on Sun morning). Wind will be generally light.
	Mon 5		Tuesday 6			Wednesday 7			Thursday 8			Friday 9			Saturday 10
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	some clouds	some clouds	clear	clear	clear	clear	clear	clear	clear	some clouds	light rain	mod. rain	light rain	light rain	rain shwrs
Cloud base (m)	7800			8650	9200				9150		8400	700	700	400	400	550	700
km/h	WNW	NE	NNW	NNW	NE	NNW	NNW	NNE	NNW	NW	SSE	SW	WSW	WNW	SW	SSW	N
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	0.9	8	0.7	0.6	0.1
max °C	18	14	17	19	14	18	20	16	19	22	16	14	15	11	7	9	6
min °C	18	13	12	18	13	13	20	15	15	21	13	12	13	7	7	7	6
chill °C	18	13	12	18	13	13	20	15	15	21	13	12	11	6	6	6	6

Freezing level m	3950	4150	4050	4100	4150	4050	4100	4150	4100	4150	4150	3600	2700	1950	1500	1450	1350

	—	—	7:11	—	—	7:13	—	—	7:15	—	—	7:16	—	—	7:16	—	—
	6:38	—	—	6:37	—	—	6:35	—	—	6:32	—	—	6:30	—	—	6:29	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 20°C on Wed afternoon, min 12°C on Tue morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 11mm), heaviest on Fri night. Warm (max 22°C on Thu afternoon, min 5°C on Sun 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
Black Diamond 32 km SSW 192m alt. 39 minutes ago	27°C	Dry	Calm (5 kph at 0).
Renton Airport 36 km WSW 716m alt. 2 hours ago	16°C	Clear	Calm (0 kph at 0).	16 km
Auburn 39 km SW 119m alt. 39 minutes ago	12°C	Dry	Calm (0 kph at 207).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	10°C	Fog -.	Light winds from the N (9 kph at 1).	1 km
Monroe 44 km NW 80m alt. 3 hours ago	7°C	Dry	Calm (0 kph at 28).
Seattle Tacoma International Airport 44 km WSW 716m alt. 2 hours ago	17°C	-	Calm (0 kph at 0).	16 km Low: few Mid: few
Seattl / oeing Airport 44 km WSW 716m alt. 2 hours ago	16°C	Clear	Calm (0 kph at 0).	16 km
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Parkwood Lane Mobile Home Park wx 46 km SW 111m alt. 2 hours ago	18°C	Dry	Calm (5 kph at 149).
Snohomish 49 km NW 196m alt. 1 hour ago	11°C	Dry	Calm (2 kph at 134).

* 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.