– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 pm Thu 29 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 4 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 2mm), 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 14°C on Tue afternoon, min 4°C on Sun night). Wind will be generally light.
	Thu 29		Friday 30			Saturday 31			Sunday 1			Monday 2			Tuesday 3
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	some clouds	cloudy	light rain	rain shwrs	clear	some clouds	some clouds	some clouds	clear	clear	cloudy	cloudy	some clouds	some clouds	some clouds	some clouds
Cloud base (m)	1550	2300	1800	450	700	6650	5650	1900	1650	700		5750	4800	6100	5850	6550	6100
km/h	ESE	ESE	SSE	SE	ESE	ESE	NNE	E	WNW	NNW	ENE	SE	SSE	ESE	ESE	E	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	—	—	1.5	0.5	—	—	—	—	—	—	—	—	—	—	—	—
max °C	8	5	6	5	5	7	10	6	6	8	5	10	12	9	12	14	10
min °C	7	4	4	5	4	4	8	4	4	7	4	6	10	8	8	12	9
chill °C	6	1	2	5	3	2	8	4	4	7	4	5	10	7	7	12	8

Freezing level m	1500	1600	1400	1350	1550	1700	1850	1800	1650	1800	2800	3250	3200	3100	3200	3250	3200

	—	—	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 2mm), 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 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. 2 hours ago	12°C	Dry	Calm (0 kph at 156).
Renton Airport 36 km WSW 218m alt. 2 hours ago	14°C	Dry and partly cloudy.	Wind obs. (7 kph from 140 degs) was rejected.	16 km Low: broken
Auburn 39 km SW 119m alt. 41 minutes ago	17°C	Dry	Calm (0 kph at 167).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	0°C	Mist -.	Wind obs. (6 kph from 1 degs) was rejected.	6 km Low: few Mid: overcast
Monroe 44 km NW 80m alt. 50 minutes ago	1°C	-	Calm (0 kph at 37).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	13°C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: few Mid: scattered High: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	12°C	Dry and partly cloudy.	Light winds from the N (7 kph at 1).	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	10°C	Dry	Calm (5 kph at 105).
Seattle 49 km WSW 100m alt. 2 hours ago		-	Calm (0 kph at 13).

* 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.