– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Sat 04 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Sat 04 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Freeze-thaw conditions (max 13°C on Sun afternoon, min -5°C on Mon night). Winds increasing (calm on Sat afternoon, fresh winds from the SW by Mon night).											Days 5–7 Weather Summary Mostly dry. Freeze-thaw conditions (max 5°C on Thu afternoon, min -1°C on Tue night). Wind will be generally light.
	Sat 4		Sunday 5			Monday 6			Tuesday 7			Wednesday 8			Thursday 9
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	cloudy	cloudy	some clouds	clear	some clouds	some clouds	some clouds	clear	some clouds	some clouds	clear	clear	clear	clear	clear
km/h	ESE	ESE	ESE	SE	SSW	SW	WSW	SW	WNW	NW	NW	NNW	NW	NNE	SE	NW	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	10	11	12	13	12	9	10	6	-3	1	1	-1	2	1	4	5	5
min °C	9	9	11	13	10	9	9	-5	-3	0	-1	-1	1	1	2	5	3
chill °C	9	9	10	12	9	7	7	-12	-8	-2	-1	-3	-1	1	2	5	1

Freezing level m	2850	3050	3100	3100	3000	2800	2650	1100	950	1400	1050	1100	1500	1400	1900	2200	2150
Cloud base (m)	5500	5550	6450	6600	5850	6700		500	500	800	900	600	700				6550

	—	—	6:37	—	—	6:35	—	—	6:33	—	—	6:31	—	—	6:30	—	—
	7:39	—	—	7:40	—	—	7:43	—	—	7:44	—	—	7:45	—	—	7:46	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Freeze-thaw conditions (max 13°C on Sun afternoon, min -5°C on Mon night). Winds increasing (calm on Sat afternoon, fresh winds from the SW by Mon night).

Mount Si Weather (Days 3-6):

Mostly dry. Freeze-thaw conditions (max 5°C on Thu afternoon, min -1°C on Tue night). 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 10 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 1 hour ago	12° C	Dry	Calm (0 kph at 327).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	4° C	-	Calm (0 kph at 45).
Renton 30 km WSW 160m alt. 1 hour ago	14° C	Dry	Calm (2 kph at 293).
Black Diamond 32 km SSW 192m alt. 50 minutes ago		-	Calm (0 kph at 0).
Grotto wx 35 km NE 321m alt. 1 hour ago	14° C	Dry	Calm (2 kph at 106).
Renton Airport 36 km WSW 218m alt. 2 hours ago	15° C	Clear	Light winds from the NNW (19 kph at 330).	16 km
Auburn 39 km SW 119m alt. 2 hours ago	16° C	Dry	Calm (0 kph at 276).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	12° C	Clear	Calm (0 kph at 0).	16 km
Woodinville 43 km WNW 137.2m alt. 55 minutes ago	13° C	Dry	Calm (3 kph at 204).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	16° C	Clear	Light winds from the NW (9 kph at 310).	16 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.