– Lat/Long: 47.51° N 121.74° W

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

Issued: 10 pm Thu 11 Jun 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 27°C on Sun afternoon, min 9°C on Thu night). Wind will be generally light.										Days 5–7 Weather Summary Some drizzle, heaviest during Tue afternoon. Warm (max 26°C on Mon afternoon, min 10°C on Tue night). Wind will be generally light.
		Friday 12			Saturday 13			Sunday 14			Monday 15			Tuesday 16			Wednesday 17
	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	some clouds	some clouds	clear	clear	some clouds	light rain	rain shwrs	clear	clear	clear
km/h	NNW	NW	NW	E	NW	NW	ESE	NW	NW	ENE	WNW	W	SSW	WSW	W	ENE	WNW	WNW	W
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.7	0.3	—	—	—
max °C	15	15	18	16	22	24	20	24	27	23	24	26	22	17	17	15	16	21	19
min °C	9	12	17	13	18	24	17	21	27	19	21	25	14	16	16	10	13	20	9
chill °C	9	12	17	13	18	24	17	21	27	19	21	25	14	16	16	10	13	20	9

Freezing level m	3350	3200	3400	3300	3600	3800	3900	4000	4400	4650	4600	4600	4300	3900	3900	4200	4150	4200	4100
Cloud base (m)	2000	8700	8850		9550	9600			8950		6750	5950		2150	600				400

	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—
	—	—	—	9:04	—	—	9:04	—	—	9:05	—	—	9:05	—	—	9:06	—	—	9:06

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 27°C on Sun afternoon, min 9°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Tue afternoon. Warm (max 26°C on Mon afternoon, min 10°C on Tue 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
Harman Heights wx 6 km SSW 251m alt. 2 hours ago	11° C	Dry	Calm (0 kph at 351).
Renton 30 km WSW 160m alt. 4 hours ago	18° C	Dry	Calm (0 kph at 8).
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	Dry and cloudy.	Light winds from the NNW (15 kph at 330).	16 km Low: overcast
Auburn 39 km SW 119m alt. 1 hour ago	24° C	Dry	Calm (2 kph at 230).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	8° C	-	Calm (0 kph at 0).	16 km Low: few
SHIP10250 42 km WSW 3m alt. 2 hours ago
SHIP5235 42 km WSW 3m alt. 3 hours ago
SHIP3142 42 km WSW 15m alt. 1 hour ago				- km
SHIP4256 42 km WSW 15m alt. 3 hours ago				- 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.