– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 3 am Sun 15 Nov Local Time

Updates in:

hr min s

Update imminent

Issued: 3 am Sun 15 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Light rain (total 7mm), mostly falling on Sun afternoon. Mild temperatures (max 9°C on Sun morning, min 3°C on Mon night). Wind will be generally light.									Days 4–6 Weather Summary Light rain (total 4mm), mostly falling on Fri night. Mild temperatures (max 8°C on Wed morning, min 3°C on Wed night). Wind will be generally light.
	Sunday 15			Monday 16			Tuesday 17			Wednesday 18			Thursday 19			Friday 20
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	light rain	rain shwrs	clear	rain shwrs	clear	clear	clear	some clouds	cloudy	light rain	some clouds	some clouds	some clouds	clear	cloudy	cloudy	light rain
Cloud base (m)	600	450	2600	2900	2000	1550	750	750		6250	2150	1900	850	2100	700	600	1550	2050
km/h	SW	SSW	S	WSW	W	ESE	NNW	NW	E	ESE	ESE	ESE	E	E	ESE	SSE	SE	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	3	3	1.3	—	0.1	—	—	—	—	—	0.2	—	—	—	—	—	—	4
max °C	9	6	5	7	6	4	6	5	4	8	6	4	8	6	3	7	6	5
min °C	7	6	4	6	4	3	5	4	4	7	4	3	6	4	3	6	5	3
chill °C	4	4	3	6	4	3	5	2	2	4	1	0	4	2	1	6	3	2

Freezing level m	1600	1350	1250	1300	1400	1200	1200	1300	1650	1650	1350	1300	1450	1450	1450	1450	1550	1650

	7:11	—	—	7:13	—	—	7:13	—	—	7:16	—	—	7:16	—	—	7:18	—	—
	—	4:30	—	—	4:29	—	—	4:28	—	—	4:27	—	—	4:25	—	—	4:24	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 7mm), mostly falling on Sun afternoon. Mild temperatures (max 9°C on Sun morning, min 3°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 4mm), mostly falling on Fri night. Mild temperatures (max 8°C on Wed morning, min 3°C on Wed 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. 59 minutes ago	11°C	Dry	Wind obs. (8 kph from 236 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	13°C	Light rain .	Light winds from the S (13 kph at 170).	16 km Low: scattered Mid: overcast
Auburn 39 km SW 119m alt. 46 minutes ago	-2°C	-	Calm (0 kph at 78).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3°C	Light rain .	Wind obs. (6 kph from 1 degs) was rejected.	0 km
Monroe 44 km NW 80m alt. 2 hours ago	17°C	Dry	Calm (0 kph at 104).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	13°C	Light rain .	Light winds from the SSE (19 kph at 160).	16 km Low: few Mid: broken High: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	13°C	Light rain .	Light winds from the S (19 kph at 190).	16 km Low: few Mid: broken High: overcast
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 2 hours ago	14°C	Dry	Light winds from the SE (14 kph at 146).
Seattle 49 km WSW 100m alt. 1 hour ago	6°C	-	Calm (2 kph at 34).

* 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.