– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 am Wed 14 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 4 am Wed 14 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Some drizzle, heaviest during Fri night. Very mild (max 17°C on Fri morning, min 7°C on Fri night). Winds increasing (calm on Wed night, strong winds from the WSW by Fri night).									Days 4–6 Weather Summary Light rain (total 4mm), mostly falling on Sat morning. Mild temperatures (max 8°C on Sun afternoon, min 2°C on Sat night). Winds decreasing (fresh winds from the WSW on Sat morning, calm by Mon morning).
	Wednesday 14			Thursday 15			Friday 16			Saturday 17			Sunday 18			Monday 19
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	clear	clear	clear	clear	clear	clear	clear	rain shwrs	rain shwrs	rain shwrs	clear	some clouds	some clouds	cloudy	cloudy	some clouds	some clouds
Cloud base (m)	850					9400	9050	8900		750	850	9100	6600	5350	3100	2050	2100	3400
km/h	N	N	SE	ESE	ESE	SSE	SSE	SSW	SW	WSW	NNW	NNW	ESE	ESE	S	SW	W	NNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	—	—	—	—	—	—	—	1.6	1.9	1.7	—	—	—	—	—	—	—
max °C	9	10	12	15	16	15	17	17	13	6	5	3	6	8	7	5	4	4
min °C	8	10	10	12	15	15	16	16	7	5	4	2	5	7	5	5	4	3
chill °C	7	8	10	11	14	15	16	16	2	0	0	-1	2	4	3	5	4	1

Freezing level m	3600	3650	3950	4000	4000	4050	3950	3800	3300	2050	1850	1800	2500	2650	2300	2250	2050	2000

	7:22	—	—	7:24	—	—	7:26	—	—	7:28	—	—	7:28	—	—	7:30	—	—
	—	6:21	—	—	6:19	—	—	6:16	—	—	6:15	—	—	6:14	—	—	6:12	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Fri night. Very mild (max 17°C on Fri morning, min 7°C on Fri night). Winds increasing (calm on Wed night, strong winds from the WSW by Fri night).

Mount Si Weather (Days 3-6):

Light rain (total 4mm), mostly falling on Sat morning. Mild temperatures (max 8°C on Sun afternoon, min 2°C on Sat night). Winds decreasing (fresh winds from the WSW on Sat morning, calm by Mon morning).

This table gives the weather forecast for Mount Si at the specific elevation of 1270 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. 1 hour ago	14°C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: broken Mid: broken High: overcast
Auburn 39 km SW 119m alt. 1 hour ago	8°C	Dry	Calm (0 kph at 288).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	6°C	Fog -.	Wind obs. (6 kph from 1 degs) was rejected.	0 km
SeattleS.-Tacoma-Wa. 43 km WSW 137m alt. 44 minutes ago	14°C	-	Light winds from the S (9 kph at 170).	36 km Mid: overcast
Monroe 44 km NW 80m alt. 1 hour ago	18°C	Dry	Calm (0 kph at 36).
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	14°C	Dry and cloudy.	Light winds from the S (9 kph at 190).	16 km Low: broken Mid: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	14°C	Dry and cloudy.	Light winds from the SE (7 kph at 140).	16 km Low: overcast Mid: broken High: overcast
Snohomish 49 km NW 196m alt. 1 hour ago	11°C	Dry	Calm (3 kph at 28).
Seattle 49 km WSW 100m alt. 1 hour ago		-	Calm (0 kph at 16).
BUOY-WPOW1 55 km W 3m alt. 44 minutes ago	14°C		Moderate winds from the SSE (21 kph at 160).

* 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.