– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 pm Fri 21 Nov Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Fri 21 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mild with moderate rain (total 17mm) on Sun morning, Becoming colder with a light covering of snow, mostly falling on Mon morning. Very mild (max 10°C on Sat morning, min 1°C on Mon morning). Wind will be generally light.										Days 5–7 Weather Summary Heavy rain (total 57mm), heaviest during Wed morning. Freeze-thaw conditions (max 8°C on Thu morning, min -1°C on Mon night). Wind will be generally light.
		Saturday 22			Sunday 23			Monday 24			Tuesday 25			Wednesday 26			Thursday 27
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	cloudy	light rain	mod. rain	mod. rain	light rain	light snow	mod. snow	light snow	some clouds	some clouds	light rain	heavy rain	heavy rain	heavy rain	mod. rain	light rain	light rain	mod. rain
km/h	S	SSW	SW	SSW	SW	WSW	WSW	WSW	WNW	ENE	ESE	SSE	SSE	S	S	SW	S	SE	SSW
See all weather maps
cm	—	—	—	—	—	—	2	6	1	—	—	—	—	—	—	—	—	—	—
mm	—	—	0.3	6	8	1.9	1.6	—	—	—	—	0.2	11	18	13	10	0.1	5	8
max°C	8	10	9	8	7	5	2	2	2	2	4	3	4	5	6	7	8	8	7
min°C	8	9	9	8	7	3	2	1	2	-1	3	2	2	4	5	6	7	8	5
chill°C	8	8	8	6	4	1	2	0	2	-1	1	-1	0	0	2	3	6	6	3

Freezing level (m)	2300	2250	2000	1900	1650	1100	800	750	800	400	1150	1550	1500	1950	2050	2050	2150	2300	1700
Cloud base (m)	800	650	800	400	400	600	450	450	450	500	450	2750	450	400	400	450	450	450	500

	—	7:22	—	—	7:22	—	—	7:24	—	—	7:26	—	—	7:26	—	—	7:28	—	—
	—	—	4:22	—	—	4:22	—	—	4:22	—	—	4:21	—	—	4:20	—	—	4:20	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mild with moderate rain (total 17mm) on Sun morning, Becoming colder with a light covering of snow, mostly falling on Mon morning. Very mild (max 10°C on Sat morning, min 1°C on Mon morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 57mm), heaviest during Wed morning. Freeze-thaw conditions (max 8°C on Thu morning, min -1°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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 49 minutes ago	9° C	Dry	Calm (0 kph at 318).
Black Diamond 32 km SSW 192m alt. 1 hour ago	10° C	Dry	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	11° C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: overcast
Auburn 39 km SW 119m alt. 1 hour ago	3° C	Dry	Calm (0 kph at 20).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3° C	Fog -.	Calm (0 kph at 0).	0 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	11° C	Dry and cloudy.	Light winds from the SE (7 kph at 140).	16 km Low: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	11° C	Dry and cloudy.	Light winds from the SSE (7 kph at 160).	16 km Low: overcast
Snohomish 49 km NW 196m alt. 50 minutes ago	8° C	Dry	Calm (0 kph at 38).
Seattle 49 km WSW 100m alt. 37 minutes ago		-
BUOY-WPOW1 55 km W 3m alt. 51 minutes ago	11° C		Moderate winds from the S (24 kph at 170).

* 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.