– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 pm Sat 17 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 4 pm Sat 17 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Very mild (max 12°C on Sun afternoon, min 5°C on Sat night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Very mild (max 17°C on Wed afternoon, min 5°C on Thu night). Wind will be generally light.
	Sat 17		Sunday 18			Monday 19			Tuesday 20			Wednesday 21			Thursday 22
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	clear	clear	some clouds	cloudy	cloudy	cloudy	some clouds	some clouds	some clouds	clear	clear	clear	some clouds	some clouds	clear	some clouds
Cloud base (m)	650		8600		5000	3400	3000	2900	4650	5800					6250	850
km/h	NNW	NNE	NNE	NNE	SE	WSW	WNW	NE	N	NNE	ESE	W	WNW	SSE	WNW	NNW	ENE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.4	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	10	8	10	12	10	11	11	8	12	14	11	16	17	12	10	11	8
min °C	10	5	5	12	9	8	11	8	8	13	11	11	16	9	8	11	5
chill °C	10	4	4	12	9	8	11	8	8	13	11	11	16	9	8	10	5

Freezing level m	2200	2200	2900	3150	2850	2250	2200	2550	2650	2850	3000	3050	3000	2650	2500	3100	3000

	—	—	7:28	—	—	7:30	—	—	7:31	—	—	7:33	—	—	7:35	—	—
	6:15	—	—	6:14	—	—	6:12	—	—	6:09	—	—	6:07	—	—	6:06	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 12°C on Sun afternoon, min 5°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 17°C on Wed afternoon, min 5°C on Thu 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 Airport 36 km WSW 218m alt. 2 hours ago	17°C	Clear	Light winds from the NNE (9 kph at 30).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	13°C	Dry	Calm (0 kph at 242).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	6°C	Dry and cloudy.	Light winds from the WNW (7 kph at 300).	16 km Low: scattered Mid: overcast
SHIP10175 42 km WSW 15m alt. 3 hours ago				- km
Monroe 44 km NW 80m alt. 2 hours ago	10°C	Dry	Calm (0 kph at 249).
SHIP5090 42 km WSW 15m alt. 3 hours ago				- km
SHIP9810 42 km WSW 15m alt. 2 hours ago				- km
SHIP9028 42 km WSW 15m alt. 1 hour ago				- km
SHIP8117 42 km WSW 3m alt. 3 hours ago
SHIP3898 42 km WSW 15m alt. 2 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.