– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 9 am Tue 03 Nov Local Time

Updates in:

hr min s

Update imminent

Issued: 9 am Tue 03 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 5mm), mostly falling on Wed night. Very mild (max 14°C on Tue morning, min 6°C on Thu afternoon). Wind will be generally light.									Days 4–6 Weather Summary Moderate rain (total 13mm), heaviest on Sat night. Very mild (max 16°C on Sat morning, min 6°C on Sat night). Wind will be generally light.
	Tuesday 3			Wednesday 4			Thursday 5			Friday 6			Saturday 7			Sunday 8
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	clear	clear	cloudy	rain shwrs	light rain	rain shwrs	some clouds	light rain	cloudy	some clouds	clear	clear	rain shwrs	cloudy	light rain	rain shwrs
Cloud base (m)	2450	5700		9150	2900	450	700	800	4950	2700	2050	2450	3650		450	850	2000	850
km/h	ESE	NW	ESE	S	SW	SW	SW	SE	SE	SSE	S	SE	SE	SSE	SSW	SSW	SW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	4	0.8	0.1	—	0.2	—	—	—	—	10	—	2	0.1
max °C	14	11	8	12	11	8	9	9	8	10	10	11	16	14	7	9	8	7
min °C	11	10	7	12	9	7	7	6	6	8	10	9	14	10	6	8	6	7
chill °C	11	10	7	12	9	5	5	6	5	7	10	8	14	8	5	7	5	7

Freezing level m	2450	2600	2800	2700	2200	1700	1500	1700	2500	2500	2700	3050	3350	3000	1500	1650	1400	1900

	6:54	—	—	6:54	—	—	6:56	—	—	6:58	—	—	7:00	—	—	7:01	—	—
	—	4:45	—	—	4:44	—	—	4:43	—	—	4:42	—	—	4:39	—	—	4:38	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 5mm), mostly falling on Wed night. Very mild (max 14°C on Tue morning, min 6°C on Thu afternoon). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 13mm), heaviest on Sat night. Very mild (max 16°C on Sat morning, min 6°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 30 km WSW 160m alt. 43 minutes ago	15°C	Dry	Calm (3 kph at 285).
Renton Airport 36 km WSW 218m alt. 2 hours ago	14°C	Clear	Light winds from the NW (15 kph at 320).	16 km
Auburn 39 km SW 119m alt. 38 minutes ago	17°C	Dry	Calm (0 kph at 175).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	5°C	Clear	Wind obs. (7 kph from 1 degs) was rejected.	16 km
Monroe 44 km NW 80m alt. 1 hour ago		-	Calm (0 kph at 49).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	13°C	Dry and partly cloudy.	Wind obs. (13 kph from 320 degs) was rejected.	16 km Low: scattered
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	13°C	Dry and partly cloudy.	Light winds from the WNW (11 kph at 290).	16 km Low: few Mid: scattered High: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	13°C	Dry	Calm (3 kph at 352).
Seattle 49 km WSW 100m alt. 2 hours ago		-	Calm (3 kph at 57).

* 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.