– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Thu 26 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Thu 26 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Freeze-thaw conditions (max 5°C on Sun morning, min -2°C on Thu night). Winds decreasing (fresh winds from the WSW on Thu afternoon, calm by Sat night).											Days 5–7 Weather Summary A moderate fall of snow, heaviest on Tue night. Freeze-thaw conditions (max 6°C on Sun afternoon, min 0°C on Tue night). Winds increasing (calm on Sun afternoon, strong winds from the SW by Tue night).
	Thu 26		Friday 27			Saturday 28			Sunday 1			Monday 2			Tuesday 3
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	cloudy	cloudy	cloudy	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	cloudy	cloudy	mod. snow
km/h	WSW	SW	SW	WSW	W	N	NNE	NNE	SE	ESE	NNW	N	NNW	N	SSW	SW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	9
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	0	-1	-1	0	-1	1	4	4	5	6	4	5	5	5	6	4	1
min °C	-1	-2	-2	0	-2	1	4	4	5	5	3	5	5	4	5	3	0
chill °C	-8	-8	-8	-6	-5	-2	1	2	4	5	1	2	2	2	3	1	-7

Freezing level m	1200	1150	1050	1300	1000	1600	2350	2550	2450	2400	2350	2500	2400	2450	2400	1900	1400
Cloud base (m)	500	700	650	750	550	400		9100							6300		400

	—	—	6:50	—	—	6:48	—	—	6:47	—	—	6:45	—	—	6:43	—	—
	5:46	—	—	5:49	—	—	5:50	—	—	5:52	—	—	5:52	—	—	5:54	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Freeze-thaw conditions (max 5°C on Sun morning, min -2°C on Thu night). Winds decreasing (fresh winds from the WSW on Thu afternoon, calm by Sat night).

Mount Si Weather (Days 3-6):

A moderate fall of snow, heaviest on Tue night. Freeze-thaw conditions (max 6°C on Sun afternoon, min 0°C on Tue night). Winds increasing (calm on Sun afternoon, strong winds from the SW by Tue night).

This table gives the weather forecast for Mount Si at the specific elevation of 1270 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	8° C	Dry	Calm (0 kph at 332).
Black Diamond 32 km SSW 192m alt. 53 minutes ago		-	Calm (3 kph at 259).
Renton Airport 36 km WSW 218m alt. 2 hours ago	11° C	Dry and partly cloudy.	Light winds from the S (15 kph at 190).	16 km Low: broken
Auburn 39 km SW 119m alt. 55 minutes ago	12° C	Dry	Calm (2 kph at 75).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-1° C	Moderate rain .	Light winds from the WSW (13 kph at 250).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	10° C	Dry and partly cloudy.	Moderate winds from the S (20 kph at 190).	16 km Low: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	9° C	Dry and partly cloudy.	Moderate winds from the SSW (28 kph at 200).	16 km Low: broken Mid: broken High: broken
Snohomish 49 km NW 196m alt. 1 hour ago	8° C	Dry	Calm (5 kph at 184).
SHIP4000 54 km W 15m alt. 3 hours ago			Light winds from the S (15 kph at 180).	- km
SHIP5900 54 km W 15m alt. 3 hours ago			Light winds from the S (15 kph at 180).	- km

* 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.