– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 pm Mon 23 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Mon 23 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary A dusting of new snow. Temperatures will be below freezing (max 0°C on Tue morning, min -4°C on Tue night). Winds increasing (calm on Mon night, fresh winds from the WSW by Wed afternoon).										Days 5–7 Weather Summary Mostly dry. Freeze-thaw conditions (max 3°C on Sat afternoon, min -2°C on Thu night). Winds decreasing (fresh winds from the WSW on Thu night, calm by Sat morning).
		Tuesday 24			Wednesday 25			Thursday 26			Friday 27			Saturday 28			Sunday 1
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	cloudy	some clouds	some clouds	cloudy	snow shwrs	cloudy	cloudy	some clouds	cloudy	cloudy	cloudy	some clouds	cloudy	cloudy	some clouds	clear	clear	clear
km/h	NNE	SE	NW	W	SW	WSW	WSW	SW	WSW	WSW	SW	WSW	NW	ENE	SSE	SW	SW	WNW	NNW
See all weather maps
cm	—	—	—	—	—	1	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	-1	0	-1	-2	-2	-1	-2	-2	-1	-1	-1	-1	0	2	3	2	3	2	2
min °C	-2	-1	-2	-4	-3	-2	-3	-2	-1	-2	-2	-1	-2	1	1	1	2	2	1
chill °C	-2	-1	-5	-10	-9	-9	-11	-9	-8	-10	-9	-7	-6	1	-2	-2	0	0	-2

Freezing level m	900	1200	1100	600	900	1050	950	950	1150	1050	1000	1150	900	1700	1500	1900	1750	1650	1900
Cloud base (m)	1750	1450	700	1800	500	450	450	450	600	500	450	450	450	450	650		7900

	—	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: A dusting of new snow. Temperatures will be below freezing (max 0°C on Tue morning, min -4°C on Tue night). Winds increasing (calm on Mon night, fresh winds from the WSW by Wed afternoon).

Mount Si Weather (Days 3-6):

Mostly dry. Freeze-thaw conditions (max 3°C on Sat afternoon, min -2°C on Thu night). Winds decreasing (fresh winds from the WSW on Thu night, 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. 1 hour ago	1° C	-	Calm (0 kph at 348).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	6° C	Dry and partly cloudy.	Light winds from the N (7 kph at 0).	16 km Low: scattered
Auburn 39 km SW 119m alt. 34 minutes ago	-2° C	-	Calm (0 kph at 191).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-3° C	Light snow.	Calm (0 kph at 0).	3 km Mid: few High: overcast
SHIP2095 42 km WSW 15m alt. 3 hours ago				- km
SHIP3581 42 km WSW 15m alt. 3 hours ago				- km
SHIP4467 42 km WSW 3m alt. 3 hours ago
SHIP10175 42 km WSW 3m alt. 3 hours ago
SHIP7460 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.