– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 am Wed 11 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 am Wed 11 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Moderate rain (total 19mm), heaviest on Fri night. Mild temperatures (max 9°C on Wed morning, min 3°C on Fri afternoon). Wind will be generally light.									Days 4–6 Weather Summary Heavy rain (total 21mm), heaviest during Sat morning. Later becoming colder with a dusting of snow on Sun afternoon. Mild temperatures (max 7°C on Mon morning, min 1°C on Sun afternoon). Wind will be generally light.
	Wednesday 11			Thursday 12			Friday 13			Saturday 14			Sunday 15			Monday 16
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	some clouds	some clouds	clear	some clouds	light rain	mod. rain	heavy rain	mod. rain	light rain	mod. rain	light snow	snow shwrs	some clouds	cloudy	light rain	some clouds
km/h	ENE	WNW	SSE	SW	SW	S	SW	SSW	SSW	SW	W	WSW	SW	NW	ESE	ESE	ENE	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	1	2	—	—	—	—
mm	—	—	—	—	—	—	0.7	6	13	6	4	7	1.8	—	—	—	1.1	—
max °C	9	8	4	8	7	5	5	3	4	3	3	3	2	1	5	7	5	5
min °C	6	5	4	6	4	4	4	3	3	3	3	2	2	1	1	6	4	4
chill °C	6	5	4	5	4	3	2	1	3	1	3	2	2	1	1	2	4	2

Freezing level m	1750	1950	2000	1400	1350	1200	1200	1100	1100	1150	1050	1050	1000	750	900	1750	1250	1700
Cloud base (m)	8750				2700	850	550	400	400	400	400	400	400	400	500	2150	550	7250

	7:18	—	—	7:16	—	—	7:15	—	—	7:13	—	—	7:11	—	—	7:09	—	—
	—	5:23	—	—	5:24	—	—	5:27	—	—	5:29	—	—	5:30	—	—	5:31	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 19mm), heaviest on Fri night. Mild temperatures (max 9°C on Wed morning, min 3°C on Fri afternoon). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 21mm), heaviest during Sat morning. Later becoming colder with a dusting of snow on Sun afternoon. Mild temperatures (max 7°C on Mon morning, min 1°C on Sun afternoon). Wind will be generally light.

This table gives the weather forecast for Mount Si at the specific elevation of 500 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 343).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Wind obs. (6 kph from 360 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 3 hours ago	6° C	-	Light winds from the N (13 kph at 0).	16 km Low: few
Auburn 39 km SW 119m alt. 1 hour ago	8° C	Dry	Calm (2 kph at 138).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	-4° C	Clear	Wind obs. (6 kph from 1 degs) was rejected.	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	6° C	Dry and partly cloudy.	Light winds from the N (6 kph at 1).	16 km Low: scattered
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	5° C	Dry and partly cloudy.	Moderate winds from the NNE (22 kph at 20).	13 km Low: scattered
Snohomish 49 km NW 196m alt. 44 minutes ago	-2° C	-	Calm (0 kph at 296).
Seattle 49 km WSW 100m alt. 1 hour ago	17° C	-	Calm (0 kph at 302).
SHIP4018 54 km W 15m alt. 4 hours ago			Calm (6 kph at 60).	- 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.