– Lat/Long: 47.51° N 121.74° W

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

Issued: 4 am Wed 12 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Some drizzle, heaviest during Fri morning. Warm (max 25°C on Thu afternoon, min 15°C on Wed morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 25°C on Mon afternoon, min 16°C on Sat night). Wind will be generally light.
	Wednesday 12			Thursday 13			Friday 14			Saturday 15			Sunday 16			Monday 17
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	rain shwrs	clear	clear	rain shwrs	rain shwrs	clear	rain shwrs	some clouds	rain shwrs	rain shwrs	some clouds	clear	some clouds	some clouds	some clouds	some clouds
Cloud base (m)	850	1850	3850	3450		2900	1950		9400	3150	3300		8350	8800		6350	5750	7000
km/h	NW	WNW	ENE	WNW	NNW	ENE	SW	W	E	W	WNW	SE	NW	NW	E	WNW	WNW	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	0.5	—	—	0.4	0.6	—	0.1	—	0.5	0.2	—	—	—	—	—	—
max °C	18	22	19	21	25	20	20	24	22	20	22	20	21	24	20	22	25	21
min °C	15	21	15	17	24	16	17	23	15	17	22	16	17	24	17	19	25	18
chill °C	15	21	15	17	24	16	17	23	15	17	22	16	17	24	17	19	25	18

Freezing level m	3550	3650	3600	3550	3600	3600	3500	3700	3750	3700	3850	3850	3950	4050	4100	4150	4200	4150

	5:58	—	—	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: Some drizzle, heaviest during Fri morning. Warm (max 25°C on Thu afternoon, min 15°C on Wed morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 25°C on Mon afternoon, min 16°C on Sat 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. 58 minutes ago	16° C	Dry	Calm (0 kph at 154).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (5 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	16° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: broken
Auburn 39 km SW 119m alt. 2 hours ago	17° C	Dry	Calm (0 kph at 280).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	17° C	Dry and partly cloudy.	Wind obs. (6 kph from 110 degs) was rejected.	16 km Low: scattered
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	16° C	Dry and partly cloudy.	Wind obs. (7 kph from 190 degs) was rejected.	16 km Low: broken Mid: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 2 hours ago	13° C	Dry	Calm (0 kph at 70).
Seattle 49 km WSW 100m alt. 37 minutes ago		-	Wind obs. (13 kph from 248 degs) was rejected.
SHIP2277 51 km W 3m alt. 2 hours ago	18° C		Calm (2 kph at 300).

* 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.