– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Fri 06 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Fri 06 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Heavy rain (total 28mm), heaviest during Sat afternoon. Later becoming colder with a dusting of snow on Sat night. Freeze-thaw conditions (max 8°C on Fri afternoon, min -2°C on Sun night). Winds decreasing (strong winds from the SSW on Sat afternoon, calm by Sun afternoon).											Days 5–7 Weather Summary A dusting of new snow. Freeze-thaw conditions (max 2°C on Tue morning, min -2°C on Mon afternoon). Winds increasing (calm on Mon night, fresh winds from the SW by Wed night).
	Fri 6		Saturday 7			Sunday 8			Monday 9			Tuesday 10			Wednesday 11
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	mod. rain	heavy rain	light snow	cloudy	cloudy	snow shwrs	light snow	some clouds	clear	clear	clear	some clouds	snow shwrs	light snow	cloudy
km/h	SW	SW	SSW	SSW	WSW	WSW	N	WSW	SW	SW	SW	ESE	ESE	SW	WSW	WSW	SW
See all weather maps
cm	—	—	—	—	1	—	—	1	1	—	—	—	—	—	2	1	—
mm	—	—	10	15	4	—	—	—	—	—	—	—	—	—	—	—	—
max °C	8	6	4	3	3	1	0	-1	-2	-1	1	2	2	1	-2	-2	-2
min °C	7	5	3	3	1	1	-1	-2	-2	-2	-2	2	2	-1	-2	-2	-2
chill °C	4	0	-3	-4	-3	0	-4	-6	-8	-5	-2	0	0	-5	-8	-7	-8

Freezing level m	2600	2200	2000	1900	1600	1400	1300	1050	1050	1100	1000	1650	1600	1400	950	1000	900
Cloud base (m)	6300	2900	850	400	450	550	450	550	800	450	700	6000			800	450	450

	—	—	7:24	—	—	7:22	—	—	7:20	—	—	7:20	—	—	7:18	—	—
	5:15	—	—	5:17	—	—	5:19	—	—	5:21	—	—	5:22	—	—	5:23	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 28mm), heaviest during Sat afternoon. Later becoming colder with a dusting of snow on Sat night. Freeze-thaw conditions (max 8°C on Fri afternoon, min -2°C on Sun night). Winds decreasing (strong winds from the SSW on Sat afternoon, calm by Sun afternoon).

Mount Si Weather (Days 3-6):

A dusting of new snow. Freeze-thaw conditions (max 2°C on Tue morning, min -2°C on Mon afternoon). Winds increasing (calm on Mon night, fresh winds from the SW by Wed 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. 43 minutes ago	7° C	Dry	Calm (0 kph at 3).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 3 hours ago	16° C	Clear	Light winds from the SSW (11 kph at 200).	16 km
Auburn 39 km SW 119m alt. 3 hours ago	16° C	Dry	Calm (0 kph at 188).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	4° C	Light rain .	Calm (0 kph at 0).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	15° C	Clear	Light winds from the SSE (17 kph at 150).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	14° C	Dry and partly cloudy.	Light winds from the S (11 kph at 180).	16 km Low: few Mid: scattered High: broken
Snohomish 49 km NW 196m alt. 45 minutes ago	9° C	Dry	Calm (0 kph at 285).
Seattle 49 km WSW 100m alt. 3 hours ago	14° C	-	Wind obs. (14 kph from 242 degs) was rejected.
SHIP6852 54 km W 15m alt. 3 hours ago			Light winds from the SSE (15 kph at 160).	- 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.