– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 10 am Wed 21 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 10 am Wed 21 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Very mild (max 19°C on Wed afternoon, min 5°C on Thu night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Very mild (max 16°C on Mon afternoon, min 6°C on Sat morning). Wind will be generally light.
	Wednesday 21			Thursday 22			Friday 23			Saturday 24			Sunday 25			Monday 26
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	some clouds	clear	some clouds	some clouds	rain shwrs	rain shwrs	clear	clear	some clouds	some clouds	some clouds	some clouds	clear	clear	clear	some clouds
Cloud base (m)						1950	500	500	8200	6250	4650	5800	5800	5550	7050	8800	8850
km/h	W	WSW	ESE	WNW	NW	NW	NW	NNW	ENE	NW	NNW	ESE	SSE	WNW	ESE	SE	ESE	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	0.1	0.1	—	—	—	—	—	—	—	—	—	—
max °C	17	19	14	12	12	8	6	8	6	10	12	9	13	15	9	13	16	10
min °C	12	18	11	10	11	5	5	6	5	6	11	8	8	13	8	8	14	9
chill °C	12	18	11	10	10	3	4	6	5	6	11	8	8	13	8	7	14	8

Freezing level m	3050	3200	3200	2950	2250	1650	1400	2450	2500	2850	2900	2950	2950	2900	2950	3150	3300	3450

	7:33	—	—	7:35	—	—	7:35	—	—	7:37	—	—	7:39	—	—	7:41	—	—
	—	6:07	—	—	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 19°C on Wed afternoon, min 5°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 16°C on Mon afternoon, min 6°C on Sat 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. 1 hour ago		-	Calm (2 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	18°C	Clear	Calm (0 kph at 0).	16 km
Auburn 39 km SW 119m alt. 48 minutes ago	24°C	Dry	Calm (0 kph at 313).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	14°C	Clear	Calm (0 kph at 0).	16 km
Monroe 44 km NW 80m alt. 35 minutes ago	6°C	Dry	Calm (0 kph at 331).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	17°C	Haze -.	Light winds from the NW (11 kph at 310).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	18°C	Dry and partly cloudy.	Light winds from the N (6 kph at 1).	16 km Low: few Mid: scattered
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 3 hours ago	17°C	Dry	Calm (3 kph at 345).
Seattle 49 km WSW 100m alt. 2 hours ago	26°C	-	Calm (0 kph at 342).

* 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.