– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 10 am Sat 10 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 10 am Sat 10 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Light rain (total 3mm), mostly falling on Sat morning. Very mild (max 12°C on Mon afternoon, min 5°C on Sat night). Wind will be generally light.									Days 4–6 Weather Summary Light rain (total 8mm), mostly falling on Wed afternoon. Very mild (max 19°C on Thu afternoon, min 9°C on Tue morning). Wind will be generally light.
	Saturday 10			Sunday 11			Monday 12			Tuesday 13			Wednesday 14			Thursday 15
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	some clouds	cloudy	some clouds	light rain	light rain	light rain	rain shwrs	clear	some clouds	clear
Cloud base (m)	400	750							2400	2400	2000	650	450	450	950	9650	7000
km/h	NNW	NNW	ENE	NW	NW	ESE	W	WNW	E	SW	SW	SSW	WSW	W	NNE	E	E	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	1.9	0.9	0.1	—	—	—	—	—	—	—	—	0.3	4	3	0.8	—	—	—
max °C	6	8	7	10	11	7	10	12	9	10	12	12	12	13	12	15	19	13
min °C	6	8	5	5	11	6	6	12	8	9	12	11	12	12	10	9	17	11
chill °C	6	8	4	5	11	6	6	12	8	9	12	11	11	12	10	8	17	9

Freezing level m	1350	1600	1850	1950	2000	2350	3050	3100	3250	3050	3000	2950	2900	3250	3600	3700	3750	3850

	7:16	—	—	7:18	—	—	7:20	—	—	7:22	—	—	7:22	—	—	7:24	—	—
	—	6:29	—	—	6:27	—	—	6:24	—	—	6:22	—	—	6:21	—	—	6:19	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 3mm), mostly falling on Sat morning. Very mild (max 12°C on Mon afternoon, min 5°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 8mm), mostly falling on Wed afternoon. Very mild (max 19°C on Thu afternoon, min 9°C on Tue 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	12°C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: overcast
Auburn 39 km SW 119m alt. 47 minutes ago		-	Calm (3 kph at 219).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	2°C	Light rain .	Light winds from the N.(Wind varies from 002 to 009 degs) (7 kph at 1).	11 km Low: overcast
Monroe 44 km NW 80m alt. 2 hours ago	8°C	Dry	Calm (0 kph at 230).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	12°C	Dry and partly cloudy.	Wind obs. (9 kph from 310 degs) was rejected.	16 km Low: scattered Mid: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 1 hour ago	12°C	Light rain .	Light winds from the W (9 kph at 280).	16 km Low: scattered Mid: broken High: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Seattle 49 km WSW 100m alt. 1 hour ago		-	Wind obs. (8 kph from 257 degs) was rejected.
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	11°C		Light winds from the N (9 kph at 350).
BUOY-TCNW1 57 km SW 3m alt. 1 hour 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.