– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 10 am Tue 27 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 10 am Tue 27 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Heavy rain (total 24mm), heaviest during Tue night. Mild temperatures (max 8°C on Tue afternoon, min 3°C on Wed night). Wind will be generally light.									Days 4–6 Weather Summary Light rain (total 7mm), mostly falling on Fri morning. Mild temperatures (max 9°C on Sat afternoon, min 3°C on Fri morning). Wind will be generally light.
	Tuesday 27			Wednesday 28			Thursday 29			Friday 30			Saturday 31			Sunday 1
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	light rain	rain shwrs	light rain	light rain	rain shwrs	some clouds	some clouds	rain shwrs	mod. rain	rain shwrs	rain shwrs	some clouds	light rain	some clouds	rain shwrs	rain shwrs	clear
Cloud base (m)	400	400	400	400	400	600	900	1950	1850	400	450	1500	2100	2100	900	450	800	6850
km/h	SW	SW	SW	SSW	SSW	SE	ESE	ESE	ESE	S	ESE	SE	SE	NNE	ESE	SW	WNW	ENE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	2	2	10	3	4	2	—	—	0.1	6	0.4	0.2	—	0.1	—	0.1	0.2	—
max °C	7	8	6	6	6	5	7	8	4	4	6	4	7	9	5	5	7	4
min °C	7	7	5	5	6	3	3	8	4	3	6	3	3	8	4	4	7	3
chill °C	6	3	1	2	3	2	1	8	2	3	6	1	1	8	3	4	6	3

Freezing level m	1550	1550	1400	1300	1350	1150	1350	1500	1550	1200	1450	1500	1550	1550	1400	1200	1300	2650

	7:41	—	—	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 24mm), heaviest during Tue night. Mild temperatures (max 8°C on Tue afternoon, min 3°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 7mm), mostly falling on Fri morning. Mild temperatures (max 9°C on Sat afternoon, min 3°C on Fri 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. 2 hours ago	11°C	Dry	Calm (3 kph at 183).
Renton Airport 36 km WSW 218m alt. 1 hour ago	13°C	Dry and cloudy.	Wind obs. (15 kph from 170 degs) was rejected.	16 km Low: scattered Mid: overcast
Auburn 39 km SW 119m alt. 1 hour ago	21°C	Dry	Calm (2 kph at 196).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3°C	Light rain .	Wind obs. (9 kph from 1 degs) was rejected.	2 km Mid: broken High: overcast
Monroe 44 km NW 80m alt. 3 hours ago	14°C	Dry	Calm (0 kph at 317).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	12°C	Dry and cloudy.	Light winds from the SW (13 kph at 230).	16 km Low: few Mid: scattered High: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 1 hour ago	12°C	Dry and partly cloudy.	Moderate winds from the SW (22 kph at 220).	16 km Low: few Mid: scattered High: broken
BUOY-EBSW1 46 km W 3m alt. 2 hours ago
Snohomish 49 km NW 196m alt. 2 hours ago	8°C	Dry	Calm (0 kph at 190).
Seattle 49 km WSW 100m alt. 2 hours ago		-	Wind obs. (8 kph from 167 degs) was rejected.

* 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.