– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Thu 20 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Thu 20 Aug 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 Sat afternoon. Warm (max 29°C on Fri afternoon, min 12°C on Sat night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 24°C on Tue afternoon, min 13°C on Sun morning). Wind will be generally light.
	Thursday 20			Friday 21			Saturday 22			Sunday 23			Monday 24			Tuesday 25
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	some clouds	cloudy	rain shwrs	rain shwrs	light rain	light rain	rain shwrs	clear	clear	clear	clear	clear	clear	clear	some clouds
Cloud base (m)				5050	5750	4150	450	400	800	500	750					8650
km/h	WNW	NW	ESE	W	SW	NE	WSW	WSW	SW	SW	NNW	NE	NW	NW	ENE	NW	NW	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	0.3	1.3	3	0.5	0.4	—	—	—	—	—	—	—	—
max °C	24	27	23	26	29	25	17	16	14	14	19	16	20	23	18	21	24	19
min °C	20	27	20	23	28	17	16	15	12	13	17	13	16	23	15	17	23	14
chill °C	20	27	20	23	28	17	16	15	11	13	17	13	16	23	15	17	23	14

Freezing level m	4350	4550	4650	4600	4550	4300	4100	3550	2850	3350	3750	4100	4050	4100	4050	4000	4050	3950

	6:09	—	—	6:09	—	—	6:11	—	—	6:13	—	—	6:13	—	—	6:15	—	—
	—	—	8:09	—	—	8:07	—	—	8:07	—	—	8:05	—	—	8:02	—	—	8:00

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 5mm), mostly falling on Sat afternoon. Warm (max 29°C on Fri afternoon, min 12°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 24°C on Tue afternoon, min 13°C on Sun morning). 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. 3 hours ago	15° C	Dry	Calm (0 kph at 25).
Black Diamond 32 km SSW 192m alt. 38 minutes ago		-	Calm (5 kph at 82).
Renton Airport 36 km WSW 218m alt. 2 hours ago	16° C	Clear	Calm (0 kph at 0).	14 km
Auburn 39 km SW 119m alt. 59 minutes ago	22° C	Dry	Calm (0 kph at 105).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	16° C	Clear	Calm (0 kph at 0).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	15° C	Clear	Light winds from the N (11 kph at 350).	16 km
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Seattle 49 km WSW 100m alt. 42 minutes ago	28° C	-	Calm (0 kph at 273).
SHIP27 51 km W -m alt. 1 hour ago		No report.	Calm (4 kph at 340).
SHIP264 51 km W -m alt. 1 hour ago		No report.	Calm (4 kph at 340).

* 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.