– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 10 pm Thu 29 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 10 pm Thu 29 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 3mm), mostly falling on Fri afternoon. Very mild (max 10°C on Sat afternoon, min 4°C on Thu night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Very mild (max 15°C on Wed afternoon, min 4°C on Sun night). Wind will be generally light.
		Friday 30			Saturday 31			Sunday 1			Monday 2			Tuesday 3
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	cloudy	light rain	rain shwrs	clear	some clouds	some clouds	some clouds	clear	clear	some clouds	cloudy	cloudy	cloudy	some clouds	clear
Cloud base (m)	2150	1750	450	750			2600	650			5750	4850	3000	5400	6300	8350
km/h	ESE	E	SE	ESE	ESE	NNE	E	NW	NW	E	ESE	SE	ESE	SSE	W	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	2	0.8	—	—	—	—	—	—	—	—	—	—	—	—
max °C	5	6	5	6	8	10	6	5	7	5	10	12	9	12	14	10
min °C	4	4	4	4	4	8	4	4	7	4	5	10	8	9	12	8
chill °C	2	2	4	3	2	8	4	4	6	4	4	10	8	9	12	7

Freezing level m	1550	1350	1300	1550	1750	1900	1900	1550	1800	2850	3250	2950	2900	2750	2800	3000

	—	7:47	—	—	7:48	—	—	6:50	—	—	7:50	—	—	7:52	—	—
	—	—	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 3mm), mostly falling on Fri afternoon. Very mild (max 10°C on Sat afternoon, min 4°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 15°C on Wed 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	7°C	Dry	Calm (0 kph at 60).
Renton Airport 36 km WSW 218m alt. 3 hours ago	8°C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: overcast
Auburn 39 km SW 119m alt. 3 hours ago	11°C	Dry	Calm (0 kph at 167).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-1°C	Mist -.	Wind obs. (6 kph from 1 degs) was rejected.	8 km Low: few Mid: overcast
Monroe 44 km NW 80m alt. 1 hour ago	7°C	Dry	Calm (0 kph at 126).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	8°C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	8°C	Dry and cloudy.	Light winds from the NNE (13 kph at 20).	16 km Low: few Mid: broken High: overcast
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 44 minutes ago	7°C	Dry	Light winds from the NNE (8 kph at 25).
Seattle 49 km WSW 100m alt. 36 minutes ago		-	Calm (2 kph at 47).

* 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.