– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sat 11 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sat 11 Jul 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 17°C on Tue afternoon, min 5°C on Sat night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 24°C on Thu morning, min 14°C on Thu night). Wind will be generally light.
		Sunday 12			Monday 13			Tuesday 14			Wednesday 15			Thursday 16			Friday 17
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	rain shwrs	clear	clear	clear
km/h	SW	WSW	WNW	NW	SW	NW	NNW	NW	NW	NW	N	NNW	ENE	ESE	WSW	W	WSW	W	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.2	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.6	—	—	—
max °C	11	8	13	12	14	16	16	16	17	17	19	21	23	24	22	20	14	17	15
min °C	5	6	11	10	12	15	14	15	16	15	16	20	22	24	21	14	14	15	12
chill °C	2	5	11	10	12	15	14	15	16	15	16	20	22	24	21	14	14	15	12

Freezing level m	3000	3350	3600	3800	3900	4050	4100	4300	4350	4250	4300	4450	4600	4700	4850	4800	4650	4650	4600
Cloud base (m)	650					8950				7200			4600	5250	5000		9050

	—	5:20	—	—	5:22	—	—	5:22	—	—	5:24	—	—	5:24	—	—	5:26	—	—
	—	—	—	9:01	—	—	9:00	—	—	9:00	—	—	9:00	—	—	8:59	—	—	8:58

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 17°C on Tue afternoon, min 5°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 24°C on Thu morning, min 14°C on Thu 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. 2 hours ago	14° C	Dry	Calm (0 kph at 337).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	13° C	-	Calm (0 kph at 239).
Renton 30 km WSW 160m alt. 2 hours ago	17° C	Dry	Calm (3 kph at 212).
Grotto wx 35 km NE 321m alt. 2 hours ago	17° C	Dry	Calm (0 kph at 99).
Renton Airport 36 km WSW 218m alt. 3 hours ago	19° C	Dry and partly cloudy.	Moderate winds from the SSW.(Wind varies from 180 to 240 degs) (20 kph at 210).	16 km Low: scattered Mid: scattered
Grotto wx 39 km NE 1101m alt. 3 hours ago	11° C	Dry	Calm (0 kph at 331).
Auburn 39 km SW 119m alt. 1 hour ago	24° C	Dry	Calm (0 kph at 267).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	11° C	Clear	Light winds from the W (9 kph at 270).	16 km
Woodinville 43 km WNW 137.2m alt. 49 minutes ago	16° C	Dry	Calm (3 kph at 291).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	18° C	Dry and partly cloudy.	Light winds from the W (19 kph at 260).	16 km Low: scattered

* 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.