– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Thu 25 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Thu 25 Dec Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary A heavy fall of snow, heaviest during Fri night. Freeze-thaw conditions (max 1°C on Thu night, min -6°C on Fri night). Mainly near gales.											Days 5–7 Weather Summary Mostly dry. Freeze-thaw conditions (max 7°C on Tue morning, min -2°C on Sun afternoon). Wind will be generally light.
	Thu 25		Friday 26			Saturday 27			Sunday 28			Monday 29			Tuesday 30
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light snow	some clouds	light snow	light snow	heavy snow	light snow	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	clear	some clouds	some clouds
km/h	SSW	S	SW	SSW	NW	NW	WSW	SW	NNW	N	N	NNW	N	NNE	NNE	SSE	SSW
See all weather maps
cm	5	—	3	3	12	2	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	0	1	-2	-4	-5	-5	-5	-4	-2	-1	0	3	3	5	7	7	6
min °C	0	-1	-3	-5	-6	-6	-5	-5	-2	-2	-1	2	3	4	6	6	4
chill °C	-5	-7	-12	-14	-13	-12	-10	-10	-7	-7	-6	-1	0	2	6	4	0

Freezing level m	1350	1450	950	600	500	400	450	400	800	850	0	2100	2400	2650	2850	2850	2850
Cloud base (m)	600	800	1550	400	400	450	450	650	500	500	700	800	850	450	800	700	1800

	—	—	7:52	—	—	7:54	—	—	7:54	—	—	7:54	—	—	7:54	—	—
	4:20	—	—	4:21	—	—	4:22	—	—	4:22	—	—	4:22	—	—	4:23	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A heavy fall of snow, heaviest during Fri night. Freeze-thaw conditions (max 1°C on Thu night, min -6°C on Fri night). Mainly near gales.

Mount Si Weather (Days 3-6):

Mostly dry. Freeze-thaw conditions (max 7°C on Tue morning, min -2°C on Sun afternoon). Wind will be generally light.

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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 1 hour ago	4° C	Dry	Calm (0 kph at 337).
Black Diamond 32 km SSW 192m alt. 37 minutes ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 3 hours ago	5° C	Dry and cloudy.	Light winds from the WSW (7 kph at 250).	16 km Low: few Mid: broken High: overcast
Auburn 39 km SW 119m alt. 44 minutes ago	6° C	Dry	Calm (0 kph at 109).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-1° C	Moderate rain .	Calm (0 kph at 0).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	6° C	Dry and cloudy.	Light winds from the E (6 kph at 100).	16 km Low: broken Mid: broken High: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	5° C	Light rain .	Light winds from the SE (13 kph at 130).	8 km Mid: broken High: overcast
Snohomish 49 km NW 196m alt. 2 hours ago	3° C	Dry	Wind obs. (6 kph from 21 degs) was rejected.
Seattle 49 km WSW 100m alt. 1 hour ago		-
SHIP3014 55 km SW 15m alt. 1 hour ago				- 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.