– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 10 pm Mon 26 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 10 pm Mon 26 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 Wed morning. Mild temperatures (max 8°C on Mon night, min 2°C on Wed night). Wind will be generally light.										Days 5–7 Weather Summary Moderate rain (total 14mm), heaviest on Fri morning. Mild temperatures (max 9°C on Sat afternoon, min 3°C on Fri night). Wind will be generally light.
		Tuesday 27			Wednesday 28			Thursday 29			Friday 30			Saturday 31
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	light rain	light rain	rain shwrs	mod. rain	light rain	rain shwrs	some clouds	some clouds	rain shwrs	heavy rain	rain shwrs	rain shwrs	some clouds	cloudy	some clouds
Cloud base (m)	750	450	450	400	400	500	1600	1800	6750	2200	400	650	1900	1800	2150	1700
km/h	S	SW	SW	SW	SSW	S	SSE	ESE	ESE	ESE	SSW	SE	SE	ESE	ESE	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	3	3	2	7	6	4	0.8	—	—	0.6	11	1.3	0.1	—	—	—
max °C	8	7	8	6	6	6	4	7	8	5	4	7	4	7	9	5
min °C	7	7	8	5	5	6	2	2	8	4	4	6	3	3	8	3
chill °C	7	7	6	2	3	4	0	1	8	1	2	5	1	1	8	3

Freezing level m	1700	1650	1600	1400	1300	1250	1100	1450	1550	1500	1200	1450	1500	1550	1550	1350

	—	7:41	—	—	7:43	—	—	7:45	—	—	7:47	—	—	7:48	—	—
	—	—	5:58	—	—	5:55	—	—	5:53	—	—	5:52	—	—	5:51	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 26mm), heaviest during Wed morning. Mild temperatures (max 8°C on Mon night, min 2°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 14mm), heaviest on Fri morning. Mild temperatures (max 9°C on Sat afternoon, min 3°C on Fri 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	9°C	Dry	Calm (0 kph at 94).
Renton Airport 36 km WSW 218m alt. 2 hours ago	11°C	Dry and cloudy.	Wind obs. (6 kph from 140 degs) was rejected.	16 km Low: scattered Mid: broken High: overcast
Auburn 39 km SW 119m alt. 1 hour ago	6°C	Dry	Calm (0 kph at 103).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3°C	Light rain .	Wind obs. (6 kph from 1 degs) was rejected.	0 km
SeattleS.-Tacoma-Wa. 43 km WSW 137m alt. 3 hours ago	11°C	-	Light winds from the SSE (7 kph at 160).	36 km Mid: overcast
Monroe 44 km NW 80m alt. 2 hours ago	3°C	Dry	Calm (0 kph at 78).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	12°C	Dry and cloudy.	Wind obs. (6 kph from 140 degs) was rejected.	16 km Low: broken Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	11°C	Dry and cloudy.	Light winds from the SSE (7 kph at 160).	16 km Low: broken Mid: overcast
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 2 hours ago	8°C	Dry	Calm (0 kph at 9).

* 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.