– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Wed 12 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Wed 12 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Warm (max 25°C on Thu afternoon, min 14°C on Wed night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Warm (max 24°C on Sat afternoon, min 12°C on Sun night). Wind will be generally light.
	Wed 12		Thursday 13			Friday 14			Saturday 15			Sunday 16			Monday 17
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	clear	clear	clear	risk tstorm	rain shwrs	rain shwrs	clear	clear	clear	some clouds	clear	clear	clear	clear	cloudy	some clouds
Cloud base (m)	1850		3500	3100	2800	3200		8600	8700			8100					750
km/h	WNW	E	NW	N	ESE	W	WNW	ESE	NW	WNW	ESE	WNW	WNW	E	WNW	W	WNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	0.5	0.1	0.1	—	—	—	—	—	—	—	—	—	—
max °C	22	19	21	25	21	21	24	22	20	24	21	20	24	20	17	19	16
min °C	21	14	17	23	17	17	23	15	16	23	15	17	23	12	14	19	12
chill °C	21	14	17	23	17	17	23	15	16	23	15	17	23	12	14	19	12

Freezing level m	3600	3550	3500	3500	3550	3500	3650	3650	3750	3850	3850	3750	3850	3700	3400	3350	3200

	—	—	5:58	—	—	6:01	—	—	6:01	—	—	6:03	—	—	6:05	—	—
	—	8:23	—	—	8:22	—	—	8:21	—	—	8:19	—	—	8:16	—	—	8:15

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 25°C on Thu afternoon, min 14°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 24°C on Sat afternoon, min 12°C on Sun 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. 2 hours ago	23° C	Dry	Calm (0 kph at 17).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	24° C	Clear	Light winds from the NNW (6 kph at 340).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	27° C	Dry	Calm (0 kph at 349).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	24° C	Clear	Wind obs. (7 kph from 290 degs) was rejected.	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	23° C	Dry and partly cloudy.	Wind obs. (9 kph from 290 degs) was rejected.	16 km Low: scattered Mid: scattered High: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	21° C	Dry	Calm (5 kph at 171).
Seattle 49 km WSW 100m alt. 1 hour ago	31° C	-
SHIP3728 54 km W 15m alt. 3 hours ago			Light winds from the NW (8 kph at 320).	- 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.