– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 am Wed 25 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 am Wed 25 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Freeze-thaw conditions (max 1°C on Fri night, min -3°C on Wed morning). Winds decreasing (fresh winds from the WSW on Wed night, light winds from the W by Fri night).									Days 4–6 Weather Summary Mostly dry. Mild temperatures (max 5°C on Mon morning, min 1°C on Sat night). Wind will be generally light.
	Wednesday 25			Thursday 26			Friday 27			Saturday 28			Sunday 1			Monday 2
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

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

Freezing level m	900	950	900	900	1150	1000	1050	1150	1150	2250	2100	1850	1900	2100	2350	2250	2100	2200
Cloud base (m)	600	500	650	450	500	600	700	650	750	550	750	800	550			8900		5850

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

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Freeze-thaw conditions (max 1°C on Fri night, min -3°C on Wed morning). Winds decreasing (fresh winds from the WSW on Wed night, light winds from the W by Fri night).

Mount Si Weather (Days 3-6):

Mostly dry. Mild temperatures (max 5°C on Mon morning, min 1°C on Sat night). 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. 2 hours ago	6° C	Dry	Calm (0 kph at 347).
Black Diamond 32 km SSW 192m alt. 3 hours ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 1 hour ago	1° C	Dry and partly cloudy.	Light winds from the SE (7 kph at 140).	16 km Low: scattered
Auburn 39 km SW 119m alt. 1 hour ago	1° C	-	Calm (0 kph at 65).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	-4° C	Mist -.	Wind obs. (6 kph from 1 degs) was rejected.	6 km
SHIP6829 43 km W 3m alt. 3 hours ago
SHIP3701 43 km W 15m alt. 3 hours ago				- km
SHIP2681 43 km W 15m alt. 3 hours ago				- km
SHIP3130 43 km W 15m alt. 2 hours ago				- km
SHIP8828 43 km W 15m alt. 3 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.