– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 am Sat 07 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 am Sat 07 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Heavy rain (total 22mm), heaviest during Sat afternoon. Later becoming colder with a dusting of snow on Mon morning. Freeze-thaw conditions (max 4°C on Sat morning, min -3°C on Mon morning). Winds decreasing (strong winds from the SSW on Sat afternoon, calm by Sun morning).									Days 4–6 Weather Summary A dusting of new snow. Freeze-thaw conditions (max 2°C on Tue afternoon, min -1°C on Tue night). Wind will be generally light.
	Saturday 7			Sunday 8			Monday 9			Tuesday 10			Wednesday 11			Thursday 12
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	mod. rain	heavy rain	light snow	cloudy	some clouds	some clouds	light snow	some clouds	clear	clear	clear	clear	some clouds	cloudy	cloudy	cloudy	some clouds	snow shwrs
km/h	SSW	SSW	WSW	WSW	NNW	SW	SW	SW	SSW	ESE	ESE	SW	WSW	WSW	WSW	SW	SW	SSW
See all weather maps
cm	—	—	1	—	—	—	3	—	—	—	—	—	—	—	—	—	—	2
mm	7	13	2	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	4	3	3	1	1	0	-2	-1	0	1	2	0	0	0	0	0	0	1
min °C	3	3	0	1	0	-2	-3	-2	-2	1	1	-1	0	-1	-1	0	0	-1
chill °C	-3	-4	-5	1	-3	-6	-8	-6	-2	-1	1	-3	-3	-5	-6	-5	-5	-5

Freezing level m	2000	1900	1500	1500	1400	900	950	1050	950	1350	1500	1250	1200	1200	1150	1200	1300	1400
Cloud base (m)	900	400	450		450	650	700	450	850		900	700	1000	800	550	1000	800	1450

	7:24	—	—	7:22	—	—	7:20	—	—	7:20	—	—	7:18	—	—	7:16	—	—
	—	5:17	—	—	5:19	—	—	5:21	—	—	5:22	—	—	5:23	—	—	5:24	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 22mm), heaviest during Sat afternoon. Later becoming colder with a dusting of snow on Mon morning. Freeze-thaw conditions (max 4°C on Sat morning, min -3°C on Mon morning). Winds decreasing (strong winds from the SSW on Sat afternoon, calm by Sun morning).

Mount Si Weather (Days 3-6):

A dusting of new snow. Freeze-thaw conditions (max 2°C on Tue afternoon, min -1°C on Tue night). Wind will be generally light.

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. 21 minutes ago	11° C	Dry	Calm (0 kph at 343).
Black Diamond 32 km SSW 192m alt. 46 minutes ago		-	Light winds from the SE (6 kph at 130).
Renton Airport 36 km WSW 218m alt. 2 hours ago	7° C	Dry and partly cloudy.	Light winds from the SSE (9 kph at 150).	16 km Low: broken Mid: broken
Auburn 39 km SW 119m alt. 27 minutes ago	12° C	Dry	Calm (0 kph at 142).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-2° C	Mist -.	Wind obs. (9 kph from 90 degs) was rejected.	1 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	7° C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: broken Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	8° C	Dry and cloudy.	Light winds from the N (6 kph at 1).	16 km Low: overcast
Snohomish 49 km NW 196m alt. 19 minutes ago	12° C	Dry	Calm (5 kph at 153).
Seattle 49 km WSW 100m alt. 44 minutes ago	16° C	-	Wind obs. (10 kph from 355 degs) was rejected.
SHIP7264 54 km W 15m alt. 3 hours ago			Light winds from the SSE (8 kph at 150).	- 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.