– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 pm Tue 27 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 4 pm Tue 27 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Heavy rain (total 26mm), heaviest during Tue night. Mild temperatures (max 9°C on Thu afternoon, min 3°C on Wed night). Wind will be generally light.											Days 5–7 Weather Summary Moderate rain (total 10mm), heaviest on Fri afternoon. Very mild (max 10°C on Mon morning, min 3°C on Fri afternoon). Wind will be generally light.
	Tue 27		Wednesday 28			Thursday 29			Friday 30			Saturday 31			Sunday 1
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	rain shwrs	light rain	light rain	rain shwrs	some clouds	clear	some clouds	light rain	rain shwrs	rain shwrs	cloudy	light rain	light rain	rain shwrs	rain shwrs	clear
Cloud base (m)	400	400	450	450	1800	1550	1850	1900	650	400	1600	1650	1800	650	500	700	450
km/h	SW	SW	SSW	SW	SSE	ESE	ESE	ESE	SSE	SSW	SE	ESE	N	SE	WNW	NNW	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	2	14	2	4	1.5	—	—	—	2	9	0.1	—	0.5	0.1	0.5	0.1	—
max °C	7	6	6	6	5	7	9	4	5	4	5	7	8	5	6	6	4
min °C	7	5	5	6	3	3	8	3	4	3	4	3	7	4	4	6	3
chill °C	5	2	2	3	1	1	7	0	4	2	3	1	7	4	4	6	2

Freezing level m	1550	1400	1300	1350	1100	1400	1500	1600	1250	1250	1500	1450	1450	1200	1250	1350	2900

	—	—	7:43	—	—	7:45	—	—	7:47	—	—	7:48	—	—	6:50	—	—
	5:58	—	—	5:55	—	—	5:53	—	—	5:52	—	—	5:51	—	—	4:50	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 26mm), heaviest during Tue night. Mild temperatures (max 9°C on Thu afternoon, min 3°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 10mm), heaviest on Fri afternoon. Very mild (max 10°C on Mon morning, min 3°C on Fri 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 30 km WSW 160m alt. 1 hour ago	10°C	Dry	Calm (2 kph at 242).
Renton Airport 36 km WSW 218m alt. 2 hours ago	12°C	Dry and partly cloudy.	Light winds from the S (17 kph at 170).	16 km Low: few Mid: scattered
Auburn 39 km SW 119m alt. 53 minutes ago	10°C	Dry	Calm (0 kph at 209).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	1°C	Light rain .	Wind obs. (7 kph from 230 degs) was rejected.	1 km
Monroe 44 km NW 80m alt. 2 hours ago	12°C	Dry	Calm (0 kph at 250).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	12°C	-	Light winds from the S.(Wind varies from 150 to 220 degs) (17 kph at 190).	16 km Low: few
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	11°C	Dry and partly cloudy.	Moderate winds from the SSW (28 kph at 210).	16 km Low: few Mid: scattered High: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	8°C	Dry	Calm (5 kph at 174).
Seattle 49 km WSW 100m alt. 49 minutes ago		-	Calm (0 kph at 23).

* 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.