– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 pm Sat 10 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 4 pm Sat 10 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 12°C on Mon afternoon, min 5°C on Sat night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Very mild (max 19°C on Thu afternoon, min 11°C on Tue afternoon). Wind will be generally light.
	Sat 10		Sunday 11			Monday 12			Tuesday 13			Wednesday 14			Thursday 15
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	some clouds	cloudy	some clouds	light rain	cloudy	cloudy	rain shwrs	some clouds	some clouds	some clouds
Cloud base (m)	750							2450	2550	1900	850	800	750	600	6750	6600	9400
km/h	NNW	E	NNW	NW	E	W	WNW	E	W	WSW	SSW	SSW	WSW	N	ESE	ENE	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.7	0.1	—	—	—	—	—	—	—	—	0.1	—	—	0.1	—	—	—
max °C	8	7	10	11	7	10	12	9	11	13	11	13	14	13	16	19	14
min °C	8	5	5	11	6	6	12	8	9	11	11	11	13	11	11	17	13
chill °C	7	4	5	10	6	6	12	8	9	11	11	11	13	11	10	17	12

Freezing level m	1500	1800	1900	2000	2300	3100	3150	3050	2950	2900	2750	2900	3400	3900	3850	3900	3900

	—	—	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: Mostly dry. 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):

Mostly dry. Very mild (max 19°C on Thu afternoon, min 11°C on Tue afternoon). 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. 3 hours ago	13°C	Dry and partly cloudy.	Light winds from the N (11 kph at 1).	16 km Low: few Mid: scattered High: broken
Auburn 39 km SW 119m alt. 2 hours ago	20°C	Dry	Calm (0 kph at 222).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3°C	Light rain .	Light winds from the N (7 kph at 1).	0 km Mid: broken High: broken
Monroe 44 km NW 80m alt. 2 hours ago	9°C	Dry	Calm (0 kph at 230).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	13°C	Dry and partly cloudy.	Light winds from the NW.(Wind varies from 290 to 350 degs) (13 kph at 320).	16 km Low: scattered Mid: scattered
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	12°C	Light rain .	Light winds from the NE (15 kph at 40).	14 km Low: scattered Mid: broken High: broken
BUOY-EBSW1 46 km W 3m alt. 2 hours ago
Seattle 49 km WSW 100m alt. 2 hours ago		-	Wind obs. (21 kph from 303 degs) was rejected.
SHIP8853 50 km WSW 15m alt. 3 hours ago				- km
SHIP9179 50 km WSW 15m alt. 3 hours ago				- km

* 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.