– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 am Tue 24 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 9 am Tue 24 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Temperatures will be below freezing (max -1°C on Tue morning, min -4°C on Tue night). Winds increasing (calm on Tue morning, fresh winds from the SW by Wed night).									Days 4–6 Weather Summary Mostly dry. Freeze-thaw conditions (max 3°C on Sat morning, min -2°C on Fri morning). Wind will be generally light.
	Tuesday 24			Wednesday 25			Thursday 26			Friday 27			Saturday 28			Sunday 1
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	some clouds	some clouds	some clouds	some clouds	cloudy	cloudy	some clouds	cloudy	cloudy	some clouds	some clouds	clear	clear	clear	clear	clear	clear
km/h	ESE	NW	W	SSW	WSW	SW	WSW	WSW	SW	SW	WSW	WNW	N	NNW	WNW	NW	NNW	NNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	-1	-2	-3	-3	-2	-2	-2	-1	-2	-1	-1	1	3	1	2	2	3	3
min °C	-2	-2	-4	-3	-3	-3	-3	-1	-2	-2	-1	0	1	1	1	2	2	2
chill °C	-4	-5	-8	-8	-10	-10	-10	-8	-10	-8	-5	-3	0	1	1	1	-1	-1

Freezing level m	1050	1000	700	850	1000	850	900	1200	1000	1000	1150	1150	2050	1400	1700	1600	1850	2100
Cloud base (m)	650	500	550	450	550	450	500	650	600	500	600	700	550	750	750	600	750

	6:56	—	—	6:54	—	—	6:52	—	—	6:50	—	—	6:48	—	—	6:47	—	—
	—	5:44	—	—	5:45	—	—	5:46	—	—	5:49	—	—	5:50	—	—	5:52	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Temperatures will be below freezing (max -1°C on Tue morning, min -4°C on Tue night). Winds increasing (calm on Tue morning, fresh winds from the SW by Wed night).

Mount Si Weather (Days 3-6):

Mostly dry. Freeze-thaw conditions (max 3°C on Sat morning, min -2°C on Fri morning). 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. 44 minutes ago	9° C	Dry	Calm (0 kph at 319).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (2 kph at 22).
Renton Airport 36 km WSW 218m alt. 2 hours ago	7° C	Dry and cloudy.	Light winds from the N (13 kph at 350).	16 km Low: scattered Mid: broken High: overcast
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (0 kph at 286).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-2° C	Moderate rain .	Calm (0 kph at 0).	1 km
SHIP2695 42 km WSW 15m alt. 2 hours ago				- km
SHIP3960 42 km WSW 15m alt. 3 hours ago				- km
SHIP3722 42 km WSW 15m alt. 3 hours ago				- km
SHIP8118 42 km WSW 15m alt. 3 hours ago				- km
SHIP7668 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.