– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Fri 12 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Fri 12 Jun Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Warm (max 20°C on Sun afternoon, min 11°C on Fri night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Very mild (max 18°C on Mon night, min 7°C on Tue night). Wind will be generally light.
		Saturday 13			Sunday 14			Monday 15			Tuesday 16			Wednesday 17			Thursday 18
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	clear	some clouds	some clouds	clear	clear	some clouds	rain shwrs	some clouds	clear	clear	clear	clear	some clouds	some clouds
km/h	E	ESE	N	ESE	E	NNW	NNW	WNW	WNW	WNW	SW	WNW	N	NNW	NNW	N	NNW	NNW	NW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	0.2	—	—	—	—	—	—	—
max °C	12	15	17	17	19	20	19	20	20	18	10	11	10	9	13	13	14	15	15
min °C	11	14	17	16	17	19	18	19	19	12	10	11	7	8	11	12	13	15	13
chill °C	11	14	17	16	17	19	18	19	19	10	7	8	5	6	10	12	12	15	13

Freezing level m	3500	3450	3800	3800	4050	4350	4550	4500	4500	4150	3950	3950	3850	3950	4100	4350	4300	4400	4350
Cloud base (m)			9150	8750	9050		9250	6300	4650		1600	700	1800	500		9600	7250	6300	6300

	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—
	—	—	—	9:04	—	—	9:05	—	—	9:05	—	—	9:06	—	—	9:06	—	—	9:07

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 20°C on Sun afternoon, min 11°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 18°C on Mon night, min 7°C on Tue night). Wind will be generally light.

This table gives the weather forecast for Mount Si at the specific elevation of 1270 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
Harman Heights wx 6 km SSW 251m alt. 45 minutes ago	12° C	Dry	Calm (0 kph at 322).
Snoqualmie Pass 30 km ESE 824m alt. 38 minutes ago	9° C	-	Calm (0 kph at 151).
Renton 30 km WSW 160m alt. 37 minutes ago	16° C	Dry	Calm (0 kph at 347).
Black Diamond 32 km SSW 192m alt. 24 minutes ago		-	Calm (3 kph at 0).
Grotto wx 35 km NE 321m alt. 40 minutes ago	15° C	Dry	Calm (0 kph at 148).
Renton Airport 36 km WSW 218m alt. 2 hours ago	19° C	Clear	Light winds from the N (9 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 2 hours ago	8° C	Dry	Calm (0 kph at 330).
Auburn 39 km SW 119m alt. 47 minutes ago	24° C	Dry	Calm (0 kph at 174).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	10° C	Clear	Light winds from the N (6 kph at 1).	16 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	16° C	Dry	Light winds from the NNE (6 kph at 14).

* 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.