– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Mon 09 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Mon 09 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 3°C on Wed afternoon, min -1°C on Mon afternoon). Wind will be generally light.											Days 5–7 Weather Summary A moderate fall of snow, heaviest on Fri morning. Temperatures will be below freezing (max 0°C on Thu afternoon, min -6°C on Sun morning). Winds decreasing (fresh winds from the SW on Fri morning, calm by Sat morning).
	Mon 9		Tuesday 10			Wednesday 11			Thursday 12			Friday 13			Saturday 14
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	clear	clear	clear	clear	clear	some clouds	some clouds	some clouds	cloudy	light snow	light snow	light snow	cloudy	cloudy	light snow
km/h	SW	S	ESE	E	ENE	ESE	SE	WSW	WSW	SW	SW	SW	WSW	SW	WNW	NE	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	4	3	5	—	—	1
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	-1	0	2	2	1	2	3	2	1	0	0	-1	-2	-3	-4	-4	-4
min °C	-1	-1	1	1	0	2	2	1	1	0	-1	-2	-3	-5	-4	-4	-5
chill °C	-7	-5	-2	-2	-2	0	2	-1	-2	-4	-7	-9	-6	-13	-4	-7	-5

Freezing level m	1200	1000	1450	1500	1450	1600	1750	1850	1400	1300	1250	1150	950	650	650	800	500
Cloud base (m)	450	750		1600	400	8550	8800	6350	3000	1900	750	500	450	400	400	450	400

	—	—	7:20	—	—	7:18	—	—	7:16	—	—	7:15	—	—	7:13	—	—
	5:21	—	—	5:22	—	—	5:23	—	—	5:24	—	—	5:27	—	—	5:29	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Freeze-thaw conditions (max 3°C on Wed afternoon, min -1°C on Mon afternoon). Wind will be generally light.

Mount Si Weather (Days 3-6):

A moderate fall of snow, heaviest on Fri morning. Temperatures will be below freezing (max 0°C on Thu afternoon, min -6°C on Sun morning). Winds decreasing (fresh winds from the SW on Fri morning, calm by Sat morning).

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. 50 minutes ago	7° C	Dry	Calm (0 kph at 168).
Black Diamond 32 km SSW 192m alt. 42 minutes ago		-	Wind obs. (8 kph from 360 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	10° C	Dry and partly cloudy.	Light winds from the SSE (13 kph at 160).	16 km Low: scattered Mid: broken
Auburn 39 km SW 119m alt. 2 hours ago	16° C	Dry	Calm (0 kph at 196).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	0° C	Moderate rain .	Calm (0 kph at 0).	1 km Mid: scattered High: overcast
SHIP5206 42 km WSW 3m alt. 1 hour ago
SHIP7853 42 km WSW 15m alt. 2 hours ago				- km
SHIP4344 42 km WSW 15m alt. 3 hours ago				- km
SHIP8937 42 km WSW 3m alt. 1 hour ago
SHIP3951 42 km WSW 15m alt. 2 hours ago				- 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.