– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Tue 11 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 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 Mostly dry. 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 Fri afternoon, min 15°C on Sat night). Wind will be generally light.
	Tue 11		Wednesday 12			Thursday 13			Friday 14			Saturday 15			Sunday 16
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	some clouds	clear	clear	clear	rain shwrs	rain shwrs	rain shwrs	rain shwrs	some clouds	rain shwrs	clear	cloudy	some clouds	some clouds
Cloud base (m)		8900	850	1750			2150	3150	3450	3000		3300	2650	9000
km/h	NW	NNE	NW	NW	ESE	WNW	NW	ESE	WSW	ENE	ESE	WNW	NNW	SSE	NW	NW	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	0.1	0.5	0.2	0.1	—	0.4	—	—	—	—
max °C	22	18	18	21	19	21	25	22	21	25	20	20	23	21	20	24	20
min °C	21	13	15	21	14	17	24	17	18	24	16	17	22	15	17	23	16
chill °C	21	13	15	21	14	17	24	17	18	24	16	17	22	15	17	23	16

Freezing level m	3850	3850	3600	3650	3700	3550	3650	3500	3600	3700	3700	3700	3750	3800	3850	3850	3800

	—	—	5:58	—	—	5:58	—	—	6:01	—	—	6:01	—	—	6:03	—	—
	—	8:25	—	—	8:23	—	—	8:22	—	—	8:21	—	—	8:19	—	—	8:16

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. 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 Fri afternoon, min 15°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. 1 hour ago	25° C	Dry	Calm (5 kph at 266).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Light winds from the WNW (8 kph at 302).
Renton Airport 36 km WSW 218m alt. 2 hours ago	26° C	Clear	Light winds from the N (7 kph at 0).	16 km
Auburn 39 km SW 119m alt. 54 minutes ago		-	Calm (0 kph at 230).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	18° C	Clear	Wind obs. (7 kph from 1 degs) was rejected.	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	26° C	Clear	Wind obs. (11 kph from 310 degs) was rejected.	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	26° C	-	Light winds from the N (9 kph at 1).	16 km Low: few Mid: few
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 3 hours ago	24° C	Dry	Wind obs. (8 kph from 200 degs) was rejected.
Seattle 49 km WSW 100m alt. 2 hours ago	31° C	-

* 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.