– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 10 pm Wed 21 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 10 pm Wed 21 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 14°C on Wed night, min 5°C on Thu night). Wind will be generally light.										Days 5–7 Weather Summary Light rain (total 3mm), mostly falling on Tue morning. Very mild (max 16°C on Sun afternoon, min 7°C on Tue morning). Wind will be generally light.
		Thursday 22			Friday 23			Saturday 24			Sunday 25			Monday 26
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	some clouds	some clouds	light rain	rain shwrs	clear	some clouds	some clouds	some clouds	cloudy	some clouds	clear	cloudy	clear	some clouds
Cloud base (m)		5500	2900	1850	500	500		6150	5000	2650	2700	6550	6150	6250
km/h	SE	WNW	NNW	NW	NW	NNW	ENE	S	WNW	SE	SSE	NNW	ESE	ESE	ENE	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	0.2	0.2	—	—	—	—	—	—	—	—	—	—
max °C	14	12	12	8	6	7	6	10	13	9	13	16	10	14	15	10
min °C	11	10	10	5	5	6	5	6	11	9	9	13	9	9	14	8
chill °C	11	10	8	3	3	5	5	6	11	9	8	13	8	8	14	8

Freezing level m	3150	2950	2200	1750	1400	2150	2450	2800	2900	2900	2800	2700	2750	2650	2600	2350

	—	7:35	—	—	7:35	—	—	7:37	—	—	7:39	—	—	7:41	—	—
	—	—	6:06	—	—	6:05	—	—	6:02	—	—	6:00	—	—	5:59	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 14°C on Wed night, min 5°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 3mm), mostly falling on Tue morning. Very mild (max 16°C on Sun afternoon, min 7°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 30 km WSW 160m alt. 1 hour ago	8°C	Dry	Calm (0 kph at 202).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	8°C	Clear	Calm (0 kph at 0).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	14°C	Dry	Calm (0 kph at 311).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	9°C	Clear	Calm (0 kph at 0).	16 km
Monroe 44 km NW 80m alt. 1 hour ago	13°C	Dry	Calm (0 kph at 175).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	8°C	Clear	Calm (0 kph at 0).	14 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	9°C	Dry and partly cloudy.	Light winds from the N (9 kph at 350).	16 km Low: scattered
BUOY-EBSW1 46 km W 3m alt. 57 minutes ago
Snohomish 49 km NW 196m alt. 1 hour ago	3°C	Dry	Calm (0 kph at 182).

* 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.