– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 10 am Wed 14 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 10 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 Mostly dry. Warm (max 22°C on Thu afternoon, min 11°C on Wed morning). Wind will be generally light.									Days 4–6 Weather Summary Light rain (total 7mm), mostly falling on Sat morning. Very mild (max 13°C on Sun afternoon, min 5°C on Sat night). Wind will be generally light.
	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

	clear	clear	clear	clear	clear	clear	clear	clear	rain shwrs	light rain	rain shwrs	rain shwrs	some clouds	some clouds	some clouds	light rain	rain shwrs	rain shwrs
Cloud base (m)			9350			9600	9250	8600		450	950		6750	6450	4200	800	450	900
km/h	NNW	NNW	ESE	ESE	ESE	ESE	SSE	WSW	SSW	WSW	WNW	NE	E	E	SSE	W	SW	NNE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	0.2	3	1.9	0.4	—	—	—	0.8	0.8	0.1
max °C	14	16	12	19	22	15	20	22	15	11	11	8	10	13	9	7	7	7
min °C	11	16	12	12	21	13	14	21	12	11	9	5	6	12	8	6	7	5
chill °C	11	16	12	11	21	12	14	21	11	9	8	4	5	12	8	6	7	5

Freezing level m	3650	3650	3950	4000	4050	4050	3950	3800	3350	2150	1850	2100	2750	2900	2350	1600	1600	1550

	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: Mostly dry. Warm (max 22°C on Thu afternoon, min 11°C on Wed morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 7mm), mostly falling on Sat morning. Very mild (max 13°C on Sun afternoon, min 5°C on Sat 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. 1 hour ago	14°C	Dry and cloudy.	Light winds from the S (6 kph at 170).	16 km Low: overcast
Auburn 39 km SW 119m alt. 54 minutes ago	22°C	Dry	Calm (5 kph at 227).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	8°C	Fog -.	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 348).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	14°C	Dry and cloudy.	Light winds from the S (9 kph at 170).	16 km Low: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	14°C	Dry and partly cloudy.	Light winds from the SSE (7 kph at 150).	16 km Low: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 32 minutes ago	13°C	Dry	Calm (2 kph at 96).
Seattle 49 km WSW 100m alt. 1 hour ago		-	Wind obs. (10 kph from 171 degs) was rejected.
SHIP4392 50 km WSW 15m alt. 1 hour 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.