– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Fri 14 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Fri 14 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Warm (max 25°C on Fri afternoon, min 15°C on Fri night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 25°C on Mon afternoon, min 13°C on Tue night). Wind will be generally light.
	Friday 14			Saturday 15			Sunday 16			Monday 17			Tuesday 18			Wednesday 19
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	clear	rain shwrs	rain shwrs	clear	some clouds	some clouds	clear	clear	clear	clear	some clouds	clear	clear	clear	clear	clear	clear
Cloud base (m)		3500	8900	3300	2800		6300		9000	8450	9000	6900	5750		9100
km/h	W	WNW	ESE	WNW	WNW	ESE	NW	NW	E	NW	NW	W	W	W	ENE	WNW	NW	ENE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	—	0.3	0.1	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	21	25	19	20	24	21	19	24	20	21	25	20	18	22	19	19	23	20
min °C	18	24	15	16	23	15	16	22	15	17	23	14	15	21	13	16	22	16
chill °C	18	24	15	16	23	15	16	22	15	17	23	14	15	21	13	16	22	16

Freezing level m	3400	3550	3600	3550	3750	3750	3800	4000	4100	4150	4100	3900	4000	4200	4500	4500	4500	4650

	6:01	—	—	6:01	—	—	6:03	—	—	6:05	—	—	6:05	—	—	6:07	—	—
	—	—	8:21	—	—	8:19	—	—	8:16	—	—	8:15	—	—	8:14	—	—	8:12

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 25°C on Fri afternoon, min 15°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 25°C on Mon afternoon, min 13°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. 2 hours ago	14° C	Dry	Calm (0 kph at 217).
Renton Airport 36 km WSW 218m alt. 2 hours ago	16° C	Mist -.	Light winds from the S (7 kph at 180).	10 km Low: overcast
Auburn 39 km SW 119m alt. 48 minutes ago		-	Calm (0 kph at 108).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	17° C	Haze -.	Calm (0 kph at 0).	8 km
SHIP4860 42 km WSW 3m alt. 3 hours ago	15° C		Light winds from the WSW (8 kph at 250).
SHIP7000 42 km WSW 15m alt. 2 hours ago			Calm (6 kph at 210).	- km
SHIP8750 42 km WSW 15m alt. 2 hours ago			Calm (6 kph at 210).	- km
SHIP7175 42 km WSW 3m alt. 2 hours ago	15° C		Calm (5 kph at 210).
SHIP7490 42 km WSW 15m alt. 3 hours ago			Light winds from the WSW (8 kph at 250).	- km
SHIP10970 42 km WSW 3m alt. 3 hours ago	15° C		Light winds from the WSW (8 kph at 250).

* 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.