– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Tue 01 Sep Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Tue 01 Sep Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 9mm), mostly falling on Wed afternoon. Very mild (max 16°C on Tue afternoon, min 8°C on Wed night). Wind will be generally light.											Days 5–7 Weather Summary Light rain (total 3mm), mostly falling on Fri afternoon. Warm (max 23°C on Sun afternoon, min 10°C on Fri night). Wind will be generally light.
	Tue 1		Wednesday 2			Thursday 3			Friday 4			Saturday 5			Sunday 6
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	rain shwrs	rain shwrs	light rain	rain shwrs	light rain	rain shwrs	rain shwrs	some clouds	risk tstorm	rain shwrs	clear	clear	some clouds	clear	clear	clear
Cloud base (m)	650	2050	850	650	1550	1550	850	1750	2100	1900			2900		2850	2950	8250
km/h	SW	S	SSW	S	SSW	W	W	ESE	NW	NW	E	ESE	NNE	ESE	NNW	NNW	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.2	0.3	0.8	3	1.7	1	1.3	1.1	—	2	0.6	—	—	—	—	—	—
max °C	16	14	13	15	11	11	14	11	13	16	13	18	21	16	20	23	18
min °C	15	12	13	13	8	10	14	9	10	16	10	12	21	15	16	22	15
chill °C	15	12	13	12	8	10	14	9	10	16	9	11	21	15	16	22	15

Freezing level m	3400	2950	2500	2450	2100	2100	2300	2300	2250	2650	2700	2950	3000	3050	3050	3300	3300

	—	—	6:26	—	—	6:26	—	—	6:28	—	—	6:30	—	—	6:31	—	—
	7:46	—	—	7:45	—	—	7:44	—	—	7:42	—	—	7:39	—	—	7:37	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 9mm), mostly falling on Wed afternoon. Very mild (max 16°C on Tue afternoon, min 8°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 3mm), mostly falling on Fri afternoon. Warm (max 23°C on Sun afternoon, min 10°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
Renton 30 km WSW 160m alt. 2 hours ago	15°C	Dry	Calm (0 kph at 134).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (2 kph at 282).
Renton Airport 36 km WSW 218m alt. 2 hours ago	17°C	Dry and partly cloudy.	Light winds from the SSE (6 kph at 150).	16 km Low: broken Mid: broken
Auburn 39 km SW 119m alt. 2 hours ago	21°C	Dry	Calm (0 kph at 252).
Monroe 44 km NW 80m alt. 56 minutes ago	12°C	Dry	Calm (0 kph at 42).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	17°C	Dry and cloudy.	Moderate winds from the SSE (20 kph at 160).	16 km Low: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	16°C	Dry and cloudy.	Light winds from the SSE (9 kph at 160).	16 km Low: broken Mid: overcast
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 2 hours ago	17°C	Dry	Calm (0 kph at 166).
Seattle 49 km WSW 100m alt. 56 minutes 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.