– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Fri 21 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Fri 21 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Some drizzle, heaviest during Sun morning. Warm (max 25°C on Mon afternoon, min 13°C on Sat night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 29°C on Tue afternoon, min 13°C on Wed night). Wind will be generally light.
		Saturday 22			Sunday 23			Monday 24			Tuesday 25			Wednesday 26
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	rain shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	clear	some clouds
Cloud base (m)	4550	600		750	650						9600				9050	8500
km/h	ESE	W	W	SSW	WSW	NW	NE	N	NNW	ESE	W	NW	SE	W	W	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	0.1	0.2	0.3	0.8	0.1	—	—	—	—	—	—	—	—	—	—
max °C	22	18	21	17	14	20	16	21	25	20	26	29	24	21	24	19
min °C	15	16	20	13	13	18	13	16	24	19	21	29	17	18	23	13
chill °C	15	16	20	13	13	18	13	16	24	19	21	29	17	18	23	13

Freezing level m	4450	3950	3600	3200	3250	3600	4100	4100	4150	4200	4200	4350	4300	4200	4100	3750

	—	6:11	—	—	6:13	—	—	6:13	—	—	6:15	—	—	6:16	—	—
	—	—	—	8:07	—	—	8:05	—	—	8:02	—	—	8:00	—	7:59	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Sun morning. Warm (max 25°C on Mon afternoon, min 13°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 29°C on Tue afternoon, min 13°C on Wed 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	17°C	Dry	Calm (0 kph at 16).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	19°C	Clear	Light winds from the S (11 kph at 170).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	19°C	Dry	Calm (0 kph at 232).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	19°C	Clear	Light winds from the S (6 kph at 180).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	17°C	Dry and partly cloudy.	Light winds from the SSW (13 kph at 200).	16 km Low: broken
BUOY-EBSW1 46 km W 3m alt. 56 minutes ago
Snohomish 49 km NW 196m alt. 2 hours ago	22°C	Dry	Light winds from the SSE (6 kph at 162).
Seattle 49 km WSW 100m alt. 1 hour ago	25°C	-
BUOY-WPOW1 55 km W 3m alt. 44 minutes ago	16°C		Moderate winds from the S (24 kph at 180).

* 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.