– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 10 pm Tue 06 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 10 pm Tue 06 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 4mm), mostly falling on Fri morning. Warm (max 20°C on Wed afternoon, min 9°C on Fri afternoon). Wind will be generally light.										Days 5–7 Weather Summary Light rain (total 2mm), mostly falling on Fri night. Very mild (max 16°C on Mon afternoon, min 6°C on Fri night). Wind will be generally light.
		Wednesday 7			Thursday 8			Friday 9			Saturday 10			Sunday 11
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	clear	some clouds	light rain	light rain	rain shwrs	rain shwrs	rain shwrs	clear	clear	clear	clear
Cloud base (m)	9200	9600		9450	9100	8650		550	600	500	800	1600
km/h	NE	NW	NW	NNE	NW	NW	SSW	SW	SW	SSW	N	NNW	E	SE	NNW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	2	1.3	1.9	0.2	0.1	—	—	—	—
max °C	14	18	20	15	18	20	15	12	10	8	8	10	7	11	13	9
min °C	13	14	20	14	14	19	12	10	9	6	6	10	6	6	12	7
chill °C	13	14	20	14	14	19	10	8	7	4	6	10	5	6	12	6

Freezing level m	4250	4150	4100	4100	4050	4050	3600	2050	1750	1350	1450	1800	1900	2050	2400	3350

	—	7:13	—	—	7:15	—	—	7:16	—	—	7:16	—	—	7:18	—	—
	—	—	6:35	—	—	6:32	—	—	6:30	—	—	6:29	—	—	6:27	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 4mm), mostly falling on Fri morning. Warm (max 20°C on Wed afternoon, min 9°C on Fri afternoon). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 2mm), mostly falling on Fri night. Very mild (max 16°C on Mon afternoon, min 6°C on Fri 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
Black Diamond 32 km SSW 192m alt. 23 minutes ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 1 hour ago	13°C	Dry and partly cloudy.	Light winds from the NNW (15 kph at 330).	13 km Low: broken
Auburn 39 km SW 119m alt. 1 hour ago	12°C	Dry	Calm (0 kph at 118).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	11°C	Clear	Calm (0 kph at 0).	16 km
Monroe 44 km NW 80m alt. 3 hours ago	15°C	Dry	Calm (0 kph at 27).
Seattl / oeing Airport 44 km WSW 218m alt. 1 hour ago	13°C	Mist -.	Light winds from the N (7 kph at 1).	10 km Low: broken Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 1 hour ago	12°C	Fog -.	Light winds from the N (11 kph at 350).	0 km
BUOY-EBSW1 46 km W 3m alt. 55 minutes ago
Snohomish 49 km NW 196m alt. 1 hour ago	9°C	Dry	Calm (0 kph at 146).
Seattle 49 km WSW 100m alt. 1 hour ago		-

* 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.