– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 pm Mon 02 Mar Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Mon 02 Mar Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 9mm) on Tue afternoon. Becoming colder with heavy fall of snow, heaviest during Wed night. Freeze-thaw conditions (max 4°C on Mon night, min -3°C on Thu morning). Winds decreasing (fresh winds from the SW on Tue afternoon, light winds from the NW by Wed afternoon).										Days 5–7 Weather Summary A dusting of snow turning to light rain (total 9mm) on Fri night. Freeze-thaw conditions (max 5°C on Sun afternoon, min -2°C on Thu night). Mainly strong winds.
		Tuesday 3			Wednesday 4			Thursday 5			Friday 6			Saturday 7			Sunday 8
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	light rain	mod. rain	mod. snow	light snow	snow shwrs	mod. snow	light snow	light snow	some clouds	cloudy	light snow	light rain	light rain	light rain	light rain	light rain	light rain	light snow
km/h	SW	SW	SW	SW	SW	NW	WSW	WSW	NNW	NNW	NNW	SW	WSW	WSW	WSW	SW	SW	WSW	WSW
See all weather maps
cm	—	—	—	7	2	1	7	3	1	—	—	1	—	—	—	—	—	—	2
mm	0.1	2	6	—	—	—	—	—	—	—	—	—	4	0.4	1.2	2	0.3	0.5	1.6
max °C	4	3	2	2	1	1	0	-2	-1	-1	1	2	3	4	4	4	4	5	5
min °C	4	3	2	0	1	0	-2	-3	-2	-2	0	2	2	4	3	3	4	4	1
chill °C	1	-3	-5	-7	-5	-6	-8	-8	-7	-5	-2	-2	-3	1	-2	-2	4	-2	-6

Freezing level m	2150	1800	1650	1550	1350	1400	1100	900	1000	1000	1300	1500	2100	3200	2300	2350	2300	2350	2300
Cloud base (m)		450	400	400	400	500	450	550	450	500	700	750	450	450	450	450	450	500	400

	—	6:43	—	—	6:41	—	—	6:39	—	—	6:37	—	—	6:35	—	—	7:33	—	—
	—	—	5:54	—	—	5:55	—	—	5:58	—	—	5:59	—	—	6:00	—	—	7:01	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 9mm) on Tue afternoon. Becoming colder with heavy fall of snow, heaviest during Wed night. Freeze-thaw conditions (max 4°C on Mon night, min -3°C on Thu morning). Winds decreasing (fresh winds from the SW on Tue afternoon, light winds from the NW by Wed afternoon).

Mount Si Weather (Days 3-6):

A dusting of snow turning to light rain (total 9mm) on Fri night. Freeze-thaw conditions (max 5°C on Sun afternoon, min -2°C on Thu night). Mainly strong winds.

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. 37 minutes ago	6° C	Dry	Calm (0 kph at 142).
Black Diamond 32 km SSW 192m alt. 44 minutes ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	8° C	-	Calm (0 kph at 0).	0.0 km
Auburn 39 km SW 119m alt. 1 hour ago	3° C	Dry	Calm (0 kph at 205).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	4° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: broken
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	9° C	Dry and cloudy.	Light winds from the SE (9 kph at 140).	16 km Low: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	9° C	Dry and partly cloudy.	Light winds from the ESE (11 kph at 120).	16 km Low: broken
Snohomish 49 km NW 196m alt. 2 hours ago	6° C	Dry	Calm (2 kph at 30).
SHIP4955 54 km W 3m alt. 1 hour ago	11° C		Light winds from the SE (11 kph at 140).
SHIP3536 54 km W 15m alt. 3 hours ago			Light winds from the ESE (10 kph at 120).	- 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.