– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 am Wed 11 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 9 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 A moderate fall of snow, heaviest on Fri afternoon. Freeze-thaw conditions (max 4°C on Wed afternoon, min -3°C on Fri night). Winds increasing (calm on Wed afternoon, fresh winds from the SW by Fri morning).									Days 4–6 Weather Summary A dusting of new snow. Freeze-thaw conditions (max 4°C on Mon night, min -2°C on Sat afternoon). Winds increasing (calm on Sat afternoon, fresh winds from the ESE by Mon morning).
	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	cloudy	some clouds	clear	some clouds	light snow	light snow	light snow	cloudy	cloudy	cloudy	light snow	cloudy	some clouds	some clouds	light rain	some clouds
km/h	ESE	SE	SW	SW	SSW	SW	SW	SW	SW	SSW	NNW	N	S	SSW	ESE	ESE	ESE	ESE
See all weather maps
cm	—	—	—	—	—	—	1	5	5	—	—	—	2	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.1	—
max °C	3	4	3	1	1	0	-1	-1	-2	-1	-1	-2	-2	0	3	3	3	4
min °C	3	3	2	1	0	-1	-1	-2	-3	-1	-2	-2	-2	-1	0	3	2	3
chill °C	1	3	0	-3	-5	-6	-7	-7	-10	-4	-2	-2	-4	-4	-4	-3	-2	-1

Freezing level m	1750	2000	2050	1500	1400	1200	1150	1100	850	1000	1050	900	900	1100	1450	1850	1700	1800
Cloud base (m)	8600	9200	7000		7350	1600	550	550	400	400	400	450	400	400	600	2150	1800	1800

	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: A moderate fall of snow, heaviest on Fri afternoon. Freeze-thaw conditions (max 4°C on Wed afternoon, min -3°C on Fri night). Winds increasing (calm on Wed afternoon, fresh winds from the SW by Fri morning).

Mount Si Weather (Days 3-6):

A dusting of new snow. Freeze-thaw conditions (max 4°C on Mon night, min -2°C on Sat afternoon). Winds increasing (calm on Sat afternoon, fresh winds from the ESE by Mon morning).

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. 48 minutes ago	11° C	Dry	Calm (0 kph at 355).
Renton Airport 36 km WSW 218m alt. 2 hours ago	11° C	Clear	Moderate winds from the NNW (20 kph at 330).	16 km
Auburn 39 km SW 119m alt. 2 hours ago	20° C	Dry	Calm (0 kph at 124).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	2° C	Moderate rain .	Calm (0 kph at 0).	16 km
SHIP9686 43 km W 3m alt. 1 hour ago	13° C
SHIP7292 43 km W 15m alt. 3 hours ago				- km
SHIP5761 43 km W 15m alt. 3 hours ago				- km
SHIP3747 43 km W 3m alt. 3 hours ago	14° C
SHIP9031 43 km W 3m alt. 3 hours ago	14° C
SHIP9463 43 km W 3m alt. 2 hours ago	13° C

* 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.