– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 am Sun 08 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 9 am Sun 08 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary A dusting of new snow. Freeze-thaw conditions (max 2°C on Tue morning, min -2°C on Sun night). Winds decreasing (fresh winds from the SW on Sun night, calm by Mon night).									Days 4–6 Weather Summary A moderate fall of snow, heaviest on Fri night. Freeze-thaw conditions (max 2°C on Wed morning, min -4°C on Fri night). Winds increasing (calm on Wed morning, fresh winds from the WSW by Thu night).
	Sunday 8			Monday 9			Tuesday 10			Wednesday 11			Thursday 12			Friday 13
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	cloudy	light snow	some clouds	cloudy	clear	clear	clear	clear	clear	clear	some clouds	some clouds	cloudy	light snow	cloudy	light snow	mod. snow
km/h	WSW	WSW	SW	SW	WSW	ESE	ESE	E	ENE	ESE	SE	SW	SW	SW	WSW	SW	ESE	SW
See all weather maps
cm	—	—	4	—	—	—	—	—	—	—	—	—	—	—	2	—	1	10
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	1	0	-1	-1	-1	1	2	2	2	2	2	1	-1	-1	0	-2	-2	-2
min °C	1	0	-2	-2	-1	-1	2	2	1	2	1	-1	-1	-1	-2	-2	-2	-4
chill °C	-2	-3	-8	-9	-7	-3	-2	-1	-1	0	0	-5	-6	-6	-6	-7	-6	-10

Freezing level m	1500	1350	1000	1000	1100	1100	1600	1550	1600	1600	1600	1500	1100	1100	1200	950	950	650
Cloud base (m)	750	700	1850	450	450	800	7900		400				800	750	450	550	900	400

	7:22	—	—	7:20	—	—	7:20	—	—	7:18	—	—	7:16	—	—	7:15	—	—
	—	5:19	—	—	5:21	—	—	5:22	—	—	5:23	—	—	5:24	—	—	5:27	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A dusting of new snow. Freeze-thaw conditions (max 2°C on Tue morning, min -2°C on Sun night). Winds decreasing (fresh winds from the SW on Sun night, calm by Mon night).

Mount Si Weather (Days 3-6):

A moderate fall of snow, heaviest on Fri night. Freeze-thaw conditions (max 2°C on Wed morning, min -4°C on Fri night). Winds increasing (calm on Wed morning, fresh winds from the WSW by Thu 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	11° C	Dry	Calm (0 kph at 297).
Black Diamond 32 km SSW 192m alt. 55 minutes ago		-	Calm (5 kph at 0).
Renton Airport 36 km WSW 218m alt. 3 hours ago	8° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: scattered
Auburn 39 km SW 119m alt. 1 hour ago	18° C	Dry	Calm (0 kph at 302).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	1° C	Moderate rain .	Calm (0 kph at 0).	16 km Low: few Mid: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	9° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: scattered Mid: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	8° C	Dry and partly cloudy.	Light winds from the N (6 kph at 10).	16 km Low: few Mid: scattered High: broken
Snohomish 49 km NW 196m alt. 56 minutes ago	12° C	Dry	Calm (3 kph at 299).
Seattle 49 km WSW 100m alt. 1 hour ago	14° C	-	Calm (3 kph at 164).
SHIP9038 54 km W 15m alt. 4 hours ago			Light winds from the NW (10 kph at 320).	- 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.