– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 pm Tue 13 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 4 pm Tue 13 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 22°C on Thu afternoon, min 11°C on Tue night). Wind will be generally light.											Days 5–7 Weather Summary Light rain (total 8mm), mostly falling on Sat afternoon. Warm (max 23°C on Fri afternoon, min 5°C on Sat night). Wind will be generally light.
	Tue 13		Wednesday 14			Thursday 15			Friday 16			Saturday 17			Sunday 18
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	cloudy	some clouds	clear	clear	clear	clear	clear	clear	clear	rain shwrs	light rain	rain shwrs	rain shwrs	some clouds	cloudy	cloudy
Cloud base (m)	1900	950	800		9550			9300	9250	9250		500	600	9250		5950	4600
km/h	WNW	SSW	WNW	NNW	ESE	ESE	ESE	ESE	SE	WSW	SSW	WSW	NNW	E	ENE	E	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	0.1	3	4	0.2	—	—	—
max °C	13	12	14	16	12	19	22	14	20	23	16	11	10	8	11	13	9
min °C	12	11	11	16	11	12	20	13	14	21	12	10	8	5	5	12	8
chill °C	12	11	11	16	10	11	20	12	14	21	11	8	6	4	4	12	8

Freezing level m	3050	3150	3500	3700	3950	4000	4000	4050	4000	3750	3450	2100	1700	1950	2700	2950	2900

	—	—	7:22	—	—	7:24	—	—	7:26	—	—	7:28	—	—	7:28	—	—
	6:22	—	—	6:21	—	—	6:19	—	—	6:16	—	—	6:15	—	—	6:14	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 22°C on Thu afternoon, min 11°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 8mm), mostly falling on Sat afternoon. Warm (max 23°C on Fri afternoon, min 5°C on Sat 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 Airport 36 km WSW 218m alt. 2 hours ago	17°C	Dry and cloudy.	Light winds from the N (6 kph at 1).	16 km Low: overcast
Auburn 39 km SW 119m alt. 1 hour ago	18°C	Dry	Calm (0 kph at 288).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	6°C	Dry and cloudy.	Light winds from the N (6 kph at 1).	16 km Low: scattered Mid: overcast
Monroe 44 km NW 80m alt. 1 hour ago	14°C	Dry	Calm (0 kph at 221).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	16°C	Dry and cloudy.	Light winds from the SSW (7 kph at 210).	16 km Low: broken Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	16°C	Dry and cloudy.	Light winds from the SSW (7 kph at 210).	16 km Low: few Mid: broken High: overcast
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 43 minutes ago	13°C	Dry	Calm (2 kph at 108).
Seattle 49 km WSW 100m alt. 2 hours ago		-	Calm (0 kph at 289).
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	15°C		Light winds from the SSE (13 kph at 150).

* 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.