– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 pm Wed 28 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 4 pm Wed 28 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Moderate rain (total 11mm), heaviest on Fri night. Mild temperatures (max 9°C on Fri afternoon, min 3°C on Wed night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Very mild (max 12°C on Mon afternoon, min 4°C on Sat night). Wind will be generally light.
	Wed 28		Thursday 29			Friday 30			Saturday 31			Sunday 1			Monday 2
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	rain shwrs	cloudy	rain shwrs	clear	some clouds	light rain	rain shwrs	clear	clear	some clouds	rain shwrs	rain shwrs	some clouds	cloudy	some clouds	cloudy
Cloud base (m)	550	900	800	1900	400	1600	700	400	700	900	1950	650	900		4800	5550	6200
km/h	SSW	SE	SE	ESE	ESE	ESE	S	SE	SE	NW	S	WSW	N	ESE	ESE	ESE	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	3	1.2	—	0.2	—	—	0.2	6	—	—	—	0.1	0.1	—	—	—	—
max °C	6	4	6	8	4	7	9	5	7	8	5	6	8	6	11	12	8
min °C	6	3	3	8	3	4	8	4	5	8	4	5	8	5	7	10	8
chill °C	4	1	1	8	0	2	8	4	5	8	4	5	8	5	5	9	7

Freezing level m	1300	1150	1400	1550	1600	1600	1500	1250	1500	1550	1350	1300	1450	3150	3550	3450	3600

	—	—	7:45	—	—	7:47	—	—	7:48	—	—	6:50	—	—	7:50	—	—
	5:55	—	—	5:53	—	—	5:52	—	—	5:51	—	—	4:50	—	—	5:47	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 11mm), heaviest on Fri night. Mild temperatures (max 9°C on Fri afternoon, min 3°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 12°C on Mon afternoon, min 4°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 30 km WSW 160m alt. 1 hour ago	6°C	Dry	Calm (0 kph at 102).
Renton Airport 36 km WSW 21m alt. 2 hours ago	9°C	Clear	Light winds from the S (9 kph at 170).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	11°C	Dry	Calm (0 kph at 240).
Stampede Pass Airport 40 km SE 1208m alt. 1 hour ago	-1°C	Mist -.	Calm (0 kph at 0).	3 km Low: broken Mid: overcast
Seattl / oeing Airport 44 km WSW 4m alt. 2 hours ago	9°C	Dry and partly cloudy.	Light winds from the SSE (19 kph at 160).	16 km Low: scattered
Monroe 44 km NW 80m alt. 3 hours ago	2°C	-	Calm (0 kph at 87).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	10°C	-	Light winds from the S (15 kph at 180).	16 km Low: few Mid: few High: broken
Seattle Tacoma International Airport 44 km WSW 136m alt. 2 hours ago	8°C	-	Light winds from the SE (17 kph at 130).	16 km Low: few Mid: few High: scattered
BUOY-EBSW1 46 km W 3m alt. 42 minutes ago
Snohomish 49 km NW 196m alt. 51 minutes ago	6°C	Dry	Calm (2 kph at 69).

* 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.