– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Sat 28 Mar Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Sat 28 Mar Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary A moderate fall of snow, heaviest on Sun afternoon. Freeze-thaw conditions (max 9°C on Sat afternoon, min -2°C on Sun night). Wind will be generally light.											Days 5–7 Weather Summary Moderate rain (total 16mm) heaviest on Wed afternoon, then becoming colder with a dusting of snow on Thu morning. Mild temperatures (max 6°C on Tue afternoon, min 2°C on Wed night). Wind will be generally light.
	Sat 28		Sunday 29			Monday 30			Tuesday 31			Wednesday 1			Thursday 2
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	cloudy	light snow	snow shwrs	some clouds	rain shwrs	some clouds	cloudy	cloudy	light rain	light rain	rain shwrs	light rain	light snow	rain shwrs	rain shwrs
km/h	W	SW	SW	W	NW	WNW	NNW	ESE	S	W	SE	ESE	SW	WSW	NW	NW	ENE
See all weather maps
cm	—	—	—	4	6	—	—	—	—	—	—	—	—	—	1	—	—
mm	0.1	0.3	—	0.3	—	—	0.1	—	—	—	0.9	0.7	6	4	1	2	0.5
max °C	9	5	5	4	0	1	3	1	5	6	4	5	4	2	2	5	4
min °C	8	1	2	2	-2	-2	2	0	2	6	3	3	4	2	2	4	2
chill °C	8	-1	0	-1	-2	-2	2	0	0	6	0	0	0	-1	0	2	2

Freezing level m	1450	950	1050	850	0	550	850	650	1300	1300	1150	1350	1050	850	850	1100	1000
Cloud base (m)	900	950	800	500	600	450	600	400	1700	2450	1400	400	400	400	450	500	650

	—	—	6:52	—	—	6:50	—	—	6:48	—	—	6:46	—	—	6:43	—	—
	7:30	—	—	7:31	—	—	7:32	—	—	7:34	—	—	7:36	—	—	7:37	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A moderate fall of snow, heaviest on Sun afternoon. Freeze-thaw conditions (max 9°C on Sat afternoon, min -2°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 16mm) heaviest on Wed afternoon, then becoming colder with a dusting of snow on Thu morning. Mild temperatures (max 6°C on Tue afternoon, min 2°C on Wed 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. 2 hours ago	10° C	Dry	Calm (0 kph at 356).
Renton 30 km WSW 160m alt. 2 hours ago	12° C	-	Calm (0 kph at 341).
Renton Airport 36 km WSW 218m alt. 2 hours ago	13° C	Dry and cloudy.	Light winds from the N (9 kph at 350).	16 km Low: broken Mid: broken High: overcast
Auburn 39 km SW 119m alt. 1 hour ago	16° C	Dry	Calm (0 kph at 245).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	4° C	Dry and partly cloudy.	Light winds from the N (9 kph at 1).	16 km Low: scattered
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	12° C	Dry and partly cloudy.	Light winds from the WNW (9 kph at 300).	16 km Low: few Mid: broken High: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	12° C	Dry and partly cloudy.	Light winds from the NW (13 kph at 320).	16 km Low: scattered Mid: broken High: broken
Snohomish 49 km NW 196m alt. 29 minutes ago	9° C	Dry	Wind obs. (6 kph from 199 degs) was rejected.
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	8° C		Fresh winds from the N (33 kph at 10).
BUOY-TCNW1 57 km SW 3m alt. 1 hour ago

* 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.