– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 am Thu 29 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 4 am Thu 29 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Light rain (total 4mm), mostly falling on Fri night. Very mild (max 10°C on Sat afternoon, min 4°C on Thu morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Very mild (max 14°C on Tue afternoon, min 4°C on Sun night). Wind will be generally light.
	Thursday 29			Friday 30			Saturday 31			Sunday 1			Monday 2			Tuesday 3
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	rain shwrs	some clouds	cloudy	light rain	rain shwrs	some clouds	some clouds	cloudy	light rain	rain shwrs	clear	cloudy	cloudy	some clouds	clear	clear	clear
Cloud base (m)	900	1750	2650	1750	550	650	6400	5350	1950	500	550		6750	5400		8550		7350
km/h	ESE	ESE	ESE	SE	W	ESE	ESE	NNE	NW	WNW	NNW	ENE	ESE	ESE	ESE	SE	NE	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	0.2	—	—	0.4	3	—	—	—	0.1	0.1	—	—	—	—	—	—	—
max °C	7	9	5	7	6	5	8	10	7	6	7	4	9	11	8	12	14	10
min °C	4	8	4	4	4	4	4	9	5	5	6	4	5	9	7	7	12	9
chill °C	2	8	1	2	4	4	3	9	5	5	5	4	4	9	6	6	12	8

Freezing level m	1500	1600	1600	1650	1250	1550	1750	1900	1800	1400	1700	2200	3050	3100	2900	2900	3000	3350

	7:45	—	—	7:47	—	—	7:48	—	—	6:50	—	—	7:50	—	—	7:52	—	—
	—	5:53	—	—	5:52	—	—	5:51	—	—	4:50	—	—	5:47	—	—	5:46	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 4mm), mostly falling on Fri night. Very mild (max 10°C on Sat afternoon, min 4°C on Thu morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 14°C on Tue afternoon, min 4°C on Sun 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 (2 kph at 68).
Renton Airport 36 km WSW 218m alt. 3 hours ago	8°C	Dry and cloudy.	Light winds from the SE (6 kph at 140).	16 km Low: broken Mid: overcast
Auburn 39 km SW 119m alt. 43 minutes ago	11°C	Dry	Calm (3 kph at 122).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-2°C	Mist -.	Calm (0 kph at 0).	5 km Low: broken Mid: overcast
Monroe 44 km NW 80m alt. 44 minutes ago	12°C	Dry	Calm (0 kph at 37).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	8°C	Dry and cloudy.	Light winds from the ESE (6 kph at 120).	16 km Low: broken Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	6°C	Dry and partly cloudy.	Light winds from the ESE (13 kph at 120).	16 km Low: broken Mid: broken High: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 55 minutes ago	7°C	Dry	Calm (2 kph at 80).
Seattle 49 km WSW 100m alt. 48 minutes ago		-	Calm (2 kph at 49).

* 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.