– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sun 02 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sun 02 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 29°C on Wed afternoon, min 9°C on Sun night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 28°C on Thu afternoon, min 14°C on Fri night). Wind will be generally light.
		Monday 3			Tuesday 4			Wednesday 5			Thursday 6			Friday 7			Saturday 8
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear
Cloud base (m)																	9600	8950
km/h	E	NNW	NW	ESE	WNW	NW	E	WNW	NW	E	W	W	S	WSW	WNW	NE	NW	WNW	NNE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	14	18	23	19	24	27	22	25	29	24	25	28	25	21	25	22	19	23	20
min °C	9	14	22	16	19	26	18	21	28	19	21	27	16	18	24	14	16	22	11
chill °C	9	14	22	16	19	26	18	21	28	19	21	27	16	18	24	14	16	22	11

Freezing level m	3300	3550	3900	4050	4150	4350	4550	4650	4750	4800	4700	4850	4750	4400	4200	4000	4050	3950	3800

	—	5:46	—	—	5:48	—	—	5:48	—	—	5:50	—	—	5:52	—	—	5:52	—	—
	—	—	—	8:37	—	—	8:37	—	—	8:35	—	—	8:34	—	—	8:31	—	—	8:30

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 29°C on Wed afternoon, min 9°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 28°C on Thu afternoon, min 14°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	13° C	Dry	Calm (0 kph at 9).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (2 kph at 0).
Renton Airport 36 km WSW 218m alt. 3 hours ago	17° C	Clear	Light winds from the NNW (9 kph at 340).	16 km
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (0 kph at 254).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	7° C	Dry and partly cloudy.	Light winds from the N (6 kph at 1).	16 km Low: scattered
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	17° C	Dry and partly cloudy.	Light winds from the NW (6 kph at 320).	16 km Low: few Mid: scattered
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	15° C	-	Light winds from the NNW (11 kph at 340).	16 km Low: few Mid: few
BUOY-EBSW1 46 km W 3m alt. 2 hours ago
Snohomish 49 km NW 196m alt. 3 hours ago	13° C	Dry	Calm (0 kph at 193).
Seattle 49 km WSW 100m alt. 2 hours ago		-

* 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.