– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Thu 09 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Thu 09 Jul 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 21°C on Thu afternoon, min 9°C on Sat night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Warm (max 24°C on Mon afternoon, min 12°C on Sun night). Wind will be generally light.
	Thu 9		Friday 10			Saturday 11			Sunday 12			Monday 13			Tuesday 14
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	some clouds	light rain	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	clear	clear
km/h	NW	NE	W	W	SW	SW	WSW	WSW	W	NW	E	WNW	WNW	ESE	W	W	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	0.2	—	—	—	—	—	—	—	—	—	—	—	—
max °C	21	19	18	19	16	13	18	16	15	20	17	20	24	20	20	24	21
min °C	20	12	14	19	11	11	16	9	12	19	12	16	23	14	17	23	12
chill °C	20	12	14	19	10	10	16	9	12	19	12	16	23	14	17	23	12

Freezing level m	3750	3700	3550	3550	3350	3150	3350	3050	3450	3750	4100	4050	4350	4500	4450	4300	4100
Cloud base (m)			700	1650	500	800	950								6350

	—	—	5:20	—	—	5:20	—	—	5:20	—	—	5:22	—	—	5:22	—	—
	—	9:04	—	—	9:02	—	—	9:02	—	—	9:01	—	—	9:00	—	—	9:00

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 21°C on Thu afternoon, min 9°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 24°C on Mon 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
Harman Heights wx 6 km SSW 251m alt. 3 hours ago	24° C	Dry	Calm (0 kph at 344).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	23° C	-	Calm (0 kph at 14).
Renton 30 km WSW 160m alt. 1 hour ago	26° C	Dry	Calm (5 kph at 18).
Grotto wx 35 km NE 321m alt. 3 hours ago	24° C	Dry	Moderate winds from the W (21 kph at 266).
Renton Airport 36 km WSW 218m alt. 3 hours ago	25° C	Clear	Light winds from the NNW (11 kph at 340).	16 km
Grotto wx 39 km NE 1101m alt. 3 hours ago	21° C	Dry	Calm (2 kph at 161).
Auburn 39 km SW 119m alt. 3 hours ago		-	Calm (0 kph at 263).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	20° C	Clear	Wind obs. (11 kph from 240 degs) was rejected.	16 km
SHIP3629 43 km W 15m alt. 3 hours ago				- km
SHIP7379 43 km W 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.