– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Tue 11 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Tue 11 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Some drizzle, heaviest during Thu night. Warm (max 25°C on Thu afternoon, min 13°C on Tue night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 25°C on Mon afternoon, min 15°C on Fri night). Wind will be generally light.
		Wednesday 12			Thursday 13			Friday 14			Saturday 15			Sunday 16
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	clear	rain shwrs	some clouds	clear	rain shwrs	rain shwrs	rain shwrs	rain shwrs	clear	some clouds	some clouds	clear	clear	clear
Cloud base (m)			1900		3350	3450	2900	2550	3350			3900		6850	9400
km/h	NE	NW	NW	E	N	NW	SSE	W	W	ESE	WNW	WNW	ESE	WNW	NW	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	0.3	—	—	1	0.4	0.2	0.1	—	—	—	—	—	—
max °C	17	17	22	18	20	25	21	21	25	22	20	24	20	20	24	20
min °C	13	14	20	14	16	23	17	17	24	15	16	23	15	17	23	16
chill °C	13	14	20	14	16	23	17	17	24	15	16	23	15	17	23	16

Freezing level m	3800	3550	3600	3600	3500	3600	3550	3500	3650	3650	3750	3900	3850	3900	4000	4050

	—	5:58	—	—	5:58	—	—	6:01	—	—	6:01	—	—	6:03	—	—
	—	—	—	8:23	—	—	8:22	—	—	8:21	—	—	8:19	—	—	8:16

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Thu night. Warm (max 25°C on Thu afternoon, min 13°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 25°C on Mon afternoon, min 15°C on Fri night). 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
Renton 30 km WSW 160m alt. 1 hour ago	18° C	Dry	Calm (3 kph at 30).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Wind obs. (6 kph from 360 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	19° C	Clear	Calm (0 kph at 0).	16 km
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (0 kph at 277).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	19° C	Clear	Calm (0 kph at 0).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	19° C	-	Calm (0 kph at 0).	16 km Low: few Mid: few
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	13° C	Dry	Calm (0 kph at 250).
Seattle 49 km WSW 100m alt. 1 hour ago		-
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	15° C		Calm (4 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.