– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 pm Sat 24 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 4 pm Sat 24 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 6mm), mostly falling on Mon night. Very mild (max 10°C on Sat afternoon, min 6°C on Sun night). Wind will be generally light.											Days 5–7 Weather Summary Heavy rain (total 39mm), heaviest during Tue night. Mild temperatures (max 7°C on Tue afternoon, min 1°C on Thu night). Wind will be generally light.
	Sat 24		Sunday 25			Monday 26			Tuesday 27			Wednesday 28			Thursday 29
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	some clouds	light rain	rain shwrs	light rain	light rain	light rain	light rain	light rain	rain shwrs	heavy rain	rain shwrs	mod. rain	mod. rain	light rain	light rain	rain shwrs
Cloud base (m)	2500	3200	2500	1900	2650	1600	700	450	400	500	450	450	750	400	450	450	650
km/h	SSW	ESE	SE	E	E	NW	W	SW	SW	SSW	SSW	SW	SSW	S	S	SSW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	1	1.3	0.1	0.1	0.8	1.6	1.4	1	14	3	5	8	4	4	0.1
max °C	10	9	7	9	8	8	8	7	6	7	6	6	7	5	5	4	4
min °C	10	7	7	8	6	6	7	6	6	6	5	5	6	4	4	4	1
chill °C	10	6	5	6	6	6	7	4	4	4	2	2	4	2	2	3	0

Freezing level m	2500	2400	1850	2100	2050	1850	1600	1550	1300	1400	1350	1250	1350	1200	1200	1100	950

	—	—	7:39	—	—	7:41	—	—	7:41	—	—	7:43	—	—	7:45	—	—
	6:02	—	—	6:00	—	—	5:59	—	—	5:58	—	—	5:55	—	—	5:53	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 6mm), mostly falling on Mon night. Very mild (max 10°C on Sat afternoon, min 6°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 39mm), heaviest during Tue night. Mild temperatures (max 7°C on Tue afternoon, min 1°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 30 km WSW 160m alt. 2 hours ago	10°C	Dry	Calm (0 kph at 35).
Renton Airport 36 km WSW 218m alt. 2 hours ago	12°C	Dry and partly cloudy.	Light winds from the W (6 kph at 280).	16 km Low: few Mid: broken
Auburn 39 km SW 119m alt. 2 hours ago	16°C	Dry	Calm (0 kph at 203).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	3°C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: scattered
Monroe 44 km NW 80m alt. 1 hour ago	11°C	Dry	Calm (0 kph at 188).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	12°C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: broken Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	11°C	Dry and partly cloudy.	Light winds from the WNW (6 kph at 290).	16 km Low: scattered Mid: broken High: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	8°C	Dry	Wind obs. (11 kph from 347 degs) was rejected.
Seattle 49 km WSW 100m alt. 1 hour ago		-	Calm (2 kph at 355).

* 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.