– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Tue 09 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Tue 09 Jun Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 9mm) at first, then becoming colder with a dusting of snow on Tue night. Very mild (max 12°C on Thu afternoon, min 2°C on Tue night). Winds decreasing (strong winds from the WSW on Tue afternoon, calm by Thu morning).											Days 5–7 Weather Summary Mostly dry. Warm (max 20°C on Sun afternoon, min 8°C on Fri night). Wind will be generally light.
	Tue 9		Wednesday 10			Thursday 11			Friday 12			Saturday 13			Sunday 14
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	light snow	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear
km/h	WSW	WSW	NW	NNW	N	NNW	NW	NNW	NW	NW	NNW	NNE	N	ESE	ESE	NW	SSE
See all weather maps
cm	—	2	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	5	2	0.8	0.7	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	4	3	3	6	6	8	12	11	9	11	11	13	16	16	18	20	19
min °C	4	2	2	5	6	8	11	8	8	11	8	11	14	15	17	19	17
chill °C	-2	-5	-2	2	4	6	11	6	6	10	6	10	14	15	17	19	17

Freezing level m	1850	1550	1750	2850	3400	3100	3150	3350	3400	3250	3300	3200	3750	3600	3700	3900	4050
Cloud base (m)	550	450	500	950			3300		9000	8550				8800

	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—
	—	9:01	—	—	9:02	—	—	9:02	—	—	9:04	—	—	9:04	—	—	9:05

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 9mm) at first, then becoming colder with a dusting of snow on Tue night. Very mild (max 12°C on Thu afternoon, min 2°C on Tue night). Winds decreasing (strong winds from the WSW on Tue afternoon, calm by Thu morning).

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 20°C on Sun afternoon, min 8°C on Fri 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. 40 minutes ago	11° C	Dry	Calm (0 kph at 340).
Snoqualmie Pass 30 km ESE 824m alt. 47 minutes ago	7° C	-	Calm (0 kph at 214).
Renton 30 km WSW 160m alt. 2 hours ago	12° C	Dry	Light winds from the WSW (10 kph at 241).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Wind obs. (10 kph from 360 degs) was rejected.
Grotto wx 35 km NE 321m alt. 2 hours ago	10° C	Dry	Calm (2 kph at 347).
Renton Airport 36 km WSW 218m alt. 2 hours ago	14° C	Dry and cloudy.	Moderate winds from the S (22 kph at 190).	16 km Low: overcast
Grotto wx 39 km NE 1101m alt. 58 minutes ago	4° C	Dry	Calm (2 kph at 68).
Auburn 39 km SW 119m alt. 2 hours ago		-	Calm (0 kph at 212).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	3° C	Light rain .	Light winds from the WNW.(Wind varies from 200 to 070 degs) (13 kph at 290).	2 km Mid: broken High: overcast
Woodinville 43 km WNW 137.2m alt. 50 minutes ago	9° C	Dry	Wind obs. (14 kph from 306 degs) was rejected.

* 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.