– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Mon 15 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Mon 15 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 23°C on Thu afternoon, min 9°C on Tue night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 24°C on Fri afternoon, min 12°C on Fri night). Wind will be generally light.
		Tuesday 16			Wednesday 17			Thursday 18			Friday 19			Saturday 20			Sunday 21
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	rain shwrs	clear	some clouds	clear	clear	clear	clear	some clouds	some clouds	clear	clear	clear	clear	clear	clear	clear	clear
km/h	SSW	WSW	WNW	NE	NW	NW	ENE	NW	NW	E	WNW	WNW	NW	W	WNW	NE	NW	NW	ENE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	0.1	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	22	17	17	15	14	19	17	20	23	20	20	24	21	17	22	20	19	23	20
min °C	14	15	16	9	11	18	12	16	22	16	18	23	12	14	20	12	16	22	15
chill °C	13	14	16	9	11	18	12	16	22	16	18	23	12	14	20	12	16	22	15

Freezing level m	4200	4050	3850	4000	3550	3900	4200	4250	4300	4350	4200	4200	4050	3950	3950	3900	3700	3850	3800
Cloud base (m)		900	700		600					6650	5400					8550		9100	8650

	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—
	—	—	—	9:06	—	—	9:06	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 23°C on Thu afternoon, min 9°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 24°C on Fri afternoon, min 12°C on Fri 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
Harman Heights wx 6 km SSW 251m alt. 1 hour ago	22° C	Dry	Calm (2 kph at 187).
Snoqualmie Pass 30 km ESE 824m alt. 46 minutes ago	15° C	-	Calm (0 kph at 59).
Renton 30 km WSW 160m alt. 1 hour ago	22° C	Dry	Calm (0 kph at 98).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (0 kph at 0).
Grotto wx 35 km NE 321m alt. 2 hours ago	21° C	Dry	Light winds from the W (6 kph at 272).
Renton Airport 36 km WSW 218m alt. 2 hours ago	23° C	Clear	Light winds from the NNW (13 kph at 330).	16 km
Grotto wx 39 km NE 1101m alt. 2 hours ago	15° C	Dry	Calm (2 kph at 15).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	17° C	Clear	Calm (0 kph at 0).	16 km
Woodinville 43 km WNW 137.2m alt. 51 minutes ago	23° C	Dry	Calm (3 kph at 280).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	23° C	Clear	Calm (0 kph at 0).	16 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.