– Lat/Long: 47.51° N 121.74° W

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

Issued: 9 pm Tue 23 Dec Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Moderate rain (total 13mm), heaviest on Thu afternoon. Mild temperatures (max 7°C on Wed morning, min 1°C on Fri afternoon). Winds decreasing (fresh winds from the SSW on Wed afternoon, calm by Thu night).										Days 5–7 Weather Summary A dusting of new snow. Freeze-thaw conditions (max 7°C on Mon morning, min -1°C on Sat afternoon). Wind will be generally light.
		Wednesday 24			Thursday 25			Friday 26			Saturday 27			Sunday 28			Monday 29
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	light rain	rain shwrs	some clouds	some clouds	light rain	rain shwrs	light rain	rain shwrs	light snow	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds
km/h	E	SE	SSW	E	ESE	WSW	S	SW	SW	WSW	SW	WSW	E	N	N	E	ESE	E	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	2	—	—	—	—	—	—	—	—	—
mm	—	0.6	2	—	—	4	1.7	2	1.6	—	—	—	—	—	—	—	—	—	—
max °C	6	7	5	4	6	4	4	4	2	1	1	1	0	3	2	2	7	5	5
min °C	4	7	4	3	6	4	3	3	1	0	0	-1	-1	2	1	1	4	3	4
chill °C	2	3	2	3	4	2	1	-2	-4	0	-2	-1	-1	2	-1	0	3	1	3

Freezing level m	1550	2350	1250	1400	1850	1350	1250	1100	850	600	550	600	350	1100	1550	2750	3350	3400	3300
Cloud base (m)	1650	1900	750	500	700	1400	400	700	400	400	450	450	500	550	600	450	450		2150

	—	7:52	—	—	7:52	—	—	7:52	—	—	7:54	—	—	7:54	—	—	7:54	—	—
	—	—	4:20	—	—	4:20	—	—	4:21	—	—	4:22	—	—	4:22	—	—	4:22	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 13mm), heaviest on Thu afternoon. Mild temperatures (max 7°C on Wed morning, min 1°C on Fri afternoon). Winds decreasing (fresh winds from the SSW on Wed afternoon, calm by Thu night).

Mount Si Weather (Days 3-6):

A dusting of new snow. Freeze-thaw conditions (max 7°C on Mon morning, min -1°C on Sat 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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 1 hour ago	3° C	Dry	Calm (0 kph at 5).
Black Diamond 32 km SSW 192m alt. 40 minutes ago		-	Calm (3 kph at 138).
Renton Airport 36 km WSW 218m alt. 2 hours ago	5° C	Dry and cloudy.	Moderate winds from the NNW (20 kph at 330).	16 km Low: overcast
Auburn 39 km SW 119m alt. 32 minutes ago	1° C	-	Calm (0 kph at 131).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-1° C	Light snow.	Wind obs. (6 kph from 1 degs) was rejected.	1 km Mid: broken High: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	6° C	Dry and cloudy.	Light winds from the NW (6 kph at 320).	16 km Low: few Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	4° C	Dry and cloudy.	Moderate winds from the N (26 kph at 0).	16 km Low: few Mid: scattered High: overcast
Snohomish 49 km NW 196m alt. 2 hours ago	5° C	Dry	Light winds from the N (8 kph at 352).
Seattle 49 km WSW 100m alt. 48 minutes ago		-
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	6° C		Fresh winds from the N (37 kph at 0).

* 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.