– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Thu 19 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Thu 19 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Some drizzle, heaviest during Sun morning. Freeze-thaw conditions (max 7°C on Sun morning, min -3°C on Thu night). Wind will be generally light.											Days 5–7 Weather Summary Heavy rain (total 44mm), heaviest during Mon afternoon. Mild temperatures (max 7°C on Mon night, min 2°C on Tue night). Winds increasing (light winds from the SE on Sun night, fresh winds from the SW by Tue afternoon).
	Thu 19		Friday 20			Saturday 21			Sunday 22			Monday 23			Tuesday 24
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	cloudy	some clouds	cloudy	light rain	light rain	light rain	light rain	light rain	light rain	light rain	heavy rain	rain shwrs	rain shwrs	light rain	rain shwrs
km/h	NW	S	SSW	SW	ESE	ESE	ESE	ESE	ESE	SE	S	ESE	SSE	SW	SW	SW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	0.1	0.5	0.5	0.7	2	4	3	11	12	3	4	3
max °C	-1	-2	2	2	1	6	5	4	7	6	4	6	6	7	5	4	3
min °C	-2	-3	1	0	0	3	3	3	5	4	4	5	6	3	4	3	2
chill °C	-2	-3	0	-2	-2	-1	-1	-2	1	1	1	3	4	-1	-1	-2	-2

Freezing level m	450	0	600	700	650	1050	1250	1350	1400	1300	1250	1450	1950	1850	1050	1000	850
Cloud base (m)	400	1400	400	550	1850	2500	2050	2500	2000	1500	450	750	400	400	600	500	550

	—	—	7:03	—	—	7:01	—	—	6:58	—	—	6:58	—	—	6:56	—	—
	5:36	—	—	5:37	—	—	5:39	—	—	5:40	—	—	5:43	—	—	5:44	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Sun morning. Freeze-thaw conditions (max 7°C on Sun morning, min -3°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 44mm), heaviest during Mon afternoon. Mild temperatures (max 7°C on Mon night, min 2°C on Tue night). Winds increasing (light winds from the SE on Sun night, fresh winds from the SW by Tue afternoon).

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. 1 hour ago	-1° C	-	Calm (0 kph at 338).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (2 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	4° C	Dry and cloudy.	Moderate winds from the NNW (20 kph at 340).	16 km Low: overcast
Auburn 39 km SW 119m alt. 1 hour ago	4° C	Dry	Calm (0 kph at 134).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-5° C	Moderate rain .	Wind obs. (7 kph from 1 degs) was rejected.	1 km Mid: broken High: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	4° C	Dry and partly cloudy.	Moderate winds from the NW (24 kph at 310).	16 km Low: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	3° C	Dry and partly cloudy.	Moderate winds from the NNW (22 kph at 330).	16 km Low: few Mid: broken
Snohomish 49 km NW 196m alt. 1 hour ago	0° C	-	Wind obs. (13 kph from 46 degs) was rejected.
SHIP4972 54 km W 15m alt. 3 hours ago			Light winds from the NNW (13 kph at 330).	- km
SHIP1216 54 km W -m alt. 42 minutes ago	3° C	-	Light winds from the NW (13 kph at 320).

* 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.