– 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. Very mild (max 18°C on Mon night, min 8°C on Tue night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Very mild (max 17°C on Thu night, min 10°C on Sat morning). 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	clear	clear	clear	clear	clear	some clouds	some clouds	clear	clear	clear	clear	clear	clear	clear	clear
km/h	SW	WSW	WNW	N	NNW	NW	N	E	NNW	NNW	WNW	W	NW	WNW	WNW	NNW	NNW	NW	N
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	0.1	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	18	10	10	11	8	12	12	14	16	17	15	17	16	11	15	15	12	16	16
min °C	11	10	10	8	8	10	11	13	15	15	15	16	11	10	13	11	12	15	14
chill °C	8	7	7	5	6	8	9	13	15	15	15	16	10	10	13	10	11	15	13

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. Very mild (max 18°C on Mon night, min 8°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 17°C on Thu night, min 10°C on Sat morning). 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. 41 minutes ago	20° C	Dry	Calm (2 kph at 190).
Snoqualmie Pass 30 km ESE 824m alt. 36 minutes ago	13° C	-	Calm (0 kph at 32).
Renton 30 km WSW 160m alt. 38 minutes ago	17° C	Dry	Calm (0 kph at 39).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (0 kph at 0).
Grotto wx 35 km NE 321m alt. 2 hours ago	17° C	Dry	Calm (2 kph at 315).
Renton Airport 36 km WSW 218m alt. 2 hours ago	19° C	-	Light winds from the SSE (6 kph at 160).	16 km Low: few
Grotto wx 39 km NE 1101m alt. 1 hour ago	13° C	Dry	Calm (0 kph at 332).
Auburn 39 km SW 119m alt. 1 hour ago	16° C	Dry	Calm (0 kph at 178).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	14° C	Clear	Calm (0 kph at 0).	16 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	21° C	Dry	Calm (5 kph at 316).

* 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.