– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sun 06 Sep Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sun 06 Sep Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Warm (max 23°C on Wed afternoon, min 11°C on Sun night). Wind will be generally light.										Days 5–7 Weather Summary Moderate rain (total 11mm), heaviest on Fri night. Very mild (max 18°C on Wed night, min 8°C on Thu night). Wind will be generally light.
		Monday 7			Tuesday 8			Wednesday 9			Thursday 10			Friday 11
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	light rain	rain shwrs	clear	clear	clear	clear	clear	clear	clear	rain shwrs	clear	some clouds	light rain	rain shwrs	rain shwrs
Cloud base (m)	1950	500	650						9300		500			600	700	500
km/h	SW	WSW	NNW	ENE	WNW	NW	ESE	W	W	SSW	SW	WSW	SSW	SW	WSW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	0.1	0.1	—	—	—	—	—	—	—	0.3	—	—	0.2	0.8	8
max °C	14	12	16	13	17	21	16	21	23	18	13	18	14	11	12	10
min °C	11	11	13	11	13	20	14	16	23	12	12	17	8	9	11	8
chill °C	11	11	13	11	13	20	14	16	23	12	12	17	7	8	10	8

Freezing level m	2700	2550	2800	3300	3550	3700	4050	4300	4300	3900	3550	3550	3350	2200	2150	1900

	—	6:33	—	—	6:33	—	—	6:35	—	—	6:37	—	—	6:37	—	—
	—	—	7:36	—	—	7:32	—	—	7:30	—	—	7:29	—	—	7:27	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 23°C on Wed afternoon, min 11°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 11mm), heaviest on Fri night. Very mild (max 18°C on Wed night, min 8°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	16°C	Dry	Calm (2 kph at 37).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (5 kph at 278).
Renton Airport 36 km WSW 218m alt. 3 hours ago	17°C	Clear	Light winds from the S (6 kph at 170).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	24°C	Dry	Calm (0 kph at 323).
Monroe 44 km NW 80m alt. 2 hours ago	16°C	Dry	Calm (0 kph at 82).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	17°C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: scattered
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	18°C	Dry and partly cloudy.	Light winds from the SSW (13 kph at 200).	16 km Low: scattered Mid: scattered
BUOY-EBSW1 46 km W 3m alt. 2 hours ago
Snohomish 49 km NW 196m alt. 59 minutes ago	10°C	Dry	Calm (0 kph at 182).
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.