– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 am Thu 12 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 9 am Thu 12 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary A moderate fall of snow, heaviest on Fri afternoon. Freeze-thaw conditions (max 3°C on Thu morning, min -3°C on Fri night). Winds decreasing (fresh winds from the SW on Fri night, calm by Sat morning).									Days 4–6 Weather Summary A moderate fall of snow, heaviest on Mon night. Freeze-thaw conditions (max 1°C on Mon afternoon, min -4°C on Tue night). Mainly fresh winds.
	Thursday 12			Friday 13			Saturday 14			Sunday 15			Monday 16			Tuesday 17
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	cloudy	cloudy	light snow	light snow	cloudy	cloudy	light snow	cloudy	cloudy	cloudy	cloudy	cloudy	mod. snow	light snow	some clouds	snow shwrs
km/h	SW	SW	SW	SW	SSW	SW	SW	NE	S	SSW	SSW	S	ESE	ESE	SE	SW	WSW	SW
See all weather maps
cm	—	—	—	—	4	5	—	—	3	—	—	—	—	—	10	4	—	1
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	3	2	0	0	0	-1	-2	-2	0	0	0	0	0	1	1	-3	-2	-3
min °C	2	0	-1	0	0	-3	-3	-2	-2	0	0	0	0	0	-3	-3	-2	-4
chill °C	-2	-5	-7	-5	-2	-8	-6	-4	-5	-5	-4	-4	-4	-5	-10	-11	-4	-11

Freezing level m	1800	1500	1300	1250	1250	1050	900	1000	1050	1300	1350	1300	1200	1350	1200	750	1000	800
Cloud base (m)		3300	1950	500	600	400	450	600	400	400	400	400	400	350	350	400	400	400

	7:16	—	—	7:15	—	—	7:13	—	—	7:11	—	—	7:09	—	—	7:07	—	—
	—	5:24	—	—	5:27	—	—	5:29	—	—	5:30	—	—	5:31	—	—	5:32	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A moderate fall of snow, heaviest on Fri afternoon. Freeze-thaw conditions (max 3°C on Thu morning, min -3°C on Fri night). Winds decreasing (fresh winds from the SW on Fri night, calm by Sat morning).

Mount Si Weather (Days 3-6):

A moderate fall of snow, heaviest on Mon night. Freeze-thaw conditions (max 1°C on Mon afternoon, min -4°C on Tue night). Mainly fresh winds.

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	7° C	Dry	Calm (0 kph at 34).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (2 kph at 84).
Renton Airport 36 km WSW 218m alt. 2 hours ago	5° C	-	Light winds from the SSE (6 kph at 160).	16 km Low: few
Auburn 39 km SW 119m alt. 2 hours ago	14° C	Dry	Calm (0 kph at 103).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	1° C	Light rain .	Calm (0 kph at 0).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	6° C	Mist -.	Light winds from the N (6 kph at 1).	8 km Low: broken Mid: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	5° C	Mist -.	Light winds from the WSW (6 kph at 240).	8 km Low: few Mid: few High: broken
Snohomish 49 km NW 196m alt. 59 minutes ago	8° C	Dry	Calm (0 kph at 0).
Seattle 49 km WSW 100m alt. 58 minutes ago	17° C	-	Light winds from the S (8 kph at 172).
SHIP5152 51 km W 3m alt. 2 hours 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.