– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 9 pm Fri 13 Nov Local Time

Updates in:

hr min s

Update imminent

Issued: 9 pm Fri 13 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Heavy rain (total 22mm), heaviest during Sat night. Very mild (max 10°C on Sat morning, min 4°C on Sun night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Mild temperatures (max 8°C on Wed morning, min 3°C on Mon night). Wind will be generally light.
		Saturday 14			Sunday 15			Monday 16			Tuesday 17			Wednesday 18
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	light rain	mod. rain	light rain	light rain	rain shwrs	light rain	rain shwrs	clear	clear	clear	some clouds	some clouds	light rain	some clouds
Cloud base (m)	1650	750	550	750	450	1500	800	1750	650	850	900	800		5550	1550	1450
km/h	SSE	SSW	SE	SE	SW	SW	S	SSW	SSW	SE	SSW	NE	ESE	ESE	ESE	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	3	0.8	0.7	10	2	4	1.5	0.2	0.1	—	—	—	—	—	0.2	—
max °C	8	10	9	9	8	7	5	7	6	4	7	6	4	8	5	4
min °C	7	8	8	8	8	6	4	7	4	3	6	4	4	7	4	3
chill °C	5	6	6	5	5	4	3	7	4	3	6	2	1	4	2	0

Freezing level m	1850	1800	1850	2150	1600	1350	1250	1350	1300	1200	1250	1400	1600	1450	1250	1350

	—	7:09	—	—	7:11	—	—	7:13	—	—	7:13	—	—	7:16	—	—
	—	—	4:30	—	—	4:30	—	—	4:29	—	—	4:28	—	—	4:27	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 22mm), heaviest during Sat night. Very mild (max 10°C on Sat morning, min 4°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Mild temperatures (max 8°C on Wed morning, min 3°C on Mon 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
Harman Heights wx 6 km SSW 251m alt. 5 hours ago	11°C	Dry	Calm (0 kph at 359).
Renton 30 km WSW 160m alt. 1 hour ago	9°C	Dry	Calm (0 kph at 100).
Renton Airport 36 km WSW 218m alt. 3 hours ago	9°C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: broken Mid: broken High: overcast
Auburn 39 km SW 119m alt. 1 hour ago	6°C	Dry	Calm (0 kph at 213).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3°C	Mist -.	Calm (0 kph at 0).	6 km Low: few Mid: scattered High: overcast
Monroe 44 km NW 80m alt. 2 hours ago	1°C	-	Calm (0 kph at 86).
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	10°C	Dry and cloudy.	Light winds from the SSW (11 kph at 200).	16 km Low: broken Mid: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	10°C	Dry and cloudy.	Light winds from the SE (7 kph at 140).	16 km Low: scattered Mid: overcast
BUOY-EBSW1 46 km W 3m alt. 2 hours ago
Snohomish 49 km NW 196m alt. 1 hour ago	13°C	Dry	Light winds from the ESE (6 kph at 121).

* 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.