– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 am Fri 27 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 am Fri 27 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 6°C on Sat afternoon, min -2°C on Fri night). Wind will be generally light.									Days 4–6 Weather Summary A moderate fall of snow, heaviest on Tue night. Freeze-thaw conditions (max 7°C on Tue morning, min -1°C on Wed morning). Winds increasing (calm on Tue morning, strong winds from the SW by Tue night).
	Friday 27			Saturday 28			Sunday 1			Monday 2			Tuesday 3			Wednesday 4
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	some clouds	clear	some clouds	clear	clear	clear	clear	clear	clear	clear	some clouds	cloudy	cloudy	mod. snow	light snow	snow shwrs	light snow
km/h	SW	WSW	WSW	NNW	N	N	SSW	N	NNW	NW	NW	N	SE	SW	SW	SW	WSW	NW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	6	3	2	2
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	0	0	0	5	6	4	5	5	4	5	5	5	7	3	2	0	0	0
min °C	-1	0	-2	3	4	3	4	4	3	4	4	4	6	2	0	-1	-1	-1
chill °C	-7	-5	-5	1	2	1	2	2	-1	1	3	2	4	-3	-7	-8	-7	-4

Freezing level m	1100	1350	950	2200	2450	2400	2200	2200	2200	2150	2150	2200	2400	1800	1500	1200	1150	1150
Cloud base (m)	650	750	700	500		8450	7900						5700	5000	400	450	400	450

	6:50	—	—	6:48	—	—	6:47	—	—	6:45	—	—	6:43	—	—	6:41	—	—
	—	5:49	—	—	5:50	—	—	5:52	—	—	5:52	—	—	5:54	—	—	5:55	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Freeze-thaw conditions (max 6°C on Sat afternoon, min -2°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

A moderate fall of snow, heaviest on Tue night. Freeze-thaw conditions (max 7°C on Tue morning, min -1°C on Wed morning). Winds increasing (calm on Tue morning, strong winds from the SW by Tue 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. 53 minutes ago	7° C	Dry	Calm (0 kph at 54).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	8° C	Dry and cloudy.	Light winds from the S (11 kph at 190).	16 km Low: scattered Mid: broken High: overcast
Auburn 39 km SW 119m alt. 3 hours ago	0° C	-	Calm (0 kph at 75).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-1° C	-	Light winds from the N (11 kph at 1).	0.0 km
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	8° C	Dry and cloudy.	Light winds from the S (19 kph at 190).	16 km Low: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	7° C	Dry and cloudy.	Moderate winds from the S.(Wind varies from 015 to 023 degs) (20 kph at 170).	16 km Low: overcast
Snohomish 49 km NW 196m alt. 48 minutes ago	8° C	Dry	Wind obs. (8 kph from 215 degs) was rejected.
Seattle 49 km WSW 100m alt. 53 minutes ago		-	Light winds from the SW (11 kph at 219).
SHIP2937 54 km W 15m alt. 1 hour ago			Light winds from the SSE (12 kph at 150).	- 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.