– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Thu 13 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Thu 13 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 2mm), mostly falling on Fri night. Warm (max 25°C on Thu afternoon, min 15°C on Fri night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 23°C on Sun afternoon, min 12°C on Tue night). Wind will be generally light.
	Thursday 13			Friday 14			Saturday 15			Sunday 16			Monday 17			Tuesday 18
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	risk tstorm	rain shwrs	risk tstorm	rain shwrs	clear	rain shwrs	rain shwrs	cloudy	clear	clear	some clouds	some clouds	some clouds	clear	clear	some clouds
Cloud base (m)		3500	2950	3350	3350			3700	9200	6500	6450				7100	6450	1900	1900
km/h	NW	WNW	ESE	W	WNW	ESE	WNW	WNW	SE	WNW	WNW	ENE	NW	NW	ESE	W	W	WNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	0.8	0.4	0.2	0.6	—	0.1	0.1	—	—	—	—	—	—	—	—	—
max °C	21	25	20	20	25	19	21	24	21	19	23	20	19	23	20	18	21	19
min °C	17	24	16	18	23	15	17	23	15	16	22	15	16	22	14	15	20	12
chill °C	17	24	16	18	23	15	17	23	15	16	22	15	16	22	14	15	20	12

Freezing level m	3450	3600	3500	3500	3600	3650	3750	3850	3800	3750	3900	4000	3950	3900	3850	3700	3800	3900

	5:58	—	—	6:01	—	—	6:01	—	—	6:03	—	—	6:05	—	—	6:05	—	—
	—	—	8:22	—	—	8:21	—	—	8:19	—	—	8:16	—	—	8:15	—	—	8:14

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 2mm), mostly falling on Fri night. Warm (max 25°C on Thu afternoon, min 15°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 23°C on Sun afternoon, min 12°C on Tue 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. 37 minutes ago	26° C	Dry	Calm (3 kph at 333).
Renton Airport 36 km WSW 218m alt. 2 hours ago	24° C	Haze -.	Light winds from the N (11 kph at 350).	10 km
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (0 kph at 225).
SHIP8437 42 km WSW 3m alt. 37 minutes ago	23° C		Light winds from the NNW (9 kph at 340).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	25° C	Clear	Light winds from the N (9 kph at 1).	16 km
SHIP8173 42 km WSW 15m alt. 3 hours ago			Light winds from the N (10 kph at 0).	- km
SHIP9027 42 km WSW 15m alt. 3 hours ago			Light winds from the N (10 kph at 0).	- km
SHIP10153 42 km WSW 3m alt. 2 hours ago	21° C		Light winds from the N (11 kph at 350).
SHIP4045 42 km WSW 15m alt. 3 hours ago			Light winds from the N (10 kph at 0).	- km
SHIP9549 42 km WSW 15m alt. 3 hours ago			Light winds from the N (10 kph at 0).	- km

* 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.