– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Fri 01 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Fri 01 May 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 Sun afternoon, min 12°C on Fri night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Very mild (max 19°C on Tue afternoon, min 8°C on Wed night). Wind will be generally light.
		Saturday 2			Sunday 3			Monday 4			Tuesday 5			Wednesday 6			Thursday 7
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	cloudy	clear	clear	clear	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	some clouds	clear	cloudy
km/h	SE	NE	NW	ESE	NW	NW	ENE	WNW	WNW	SW	W	WNW	SSW	WSW	W	SW	WSW	W	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.4	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	15	17	21	17	22	23	19	20	22	17	15	19	16	15	18	14	12	16	14
min °C	12	14	21	15	18	23	16	17	21	10	12	17	11	12	17	8	9	15	8
chill °C	12	14	21	15	18	23	16	17	21	10	12	17	11	12	17	8	9	15	7

Freezing level m	3100	3100	3250	3300	3300	3500	3500	3450	3500	3500	3450	3500	3600	3550	3500	3300	3200	3200	2850
Cloud base (m)	3300	3450	3100			6700		9400	9050					9450			8250		6150

	—	5:48	—	—	5:47	—	—	5:45	—	—	5:43	—	—	5:41	—	—	5:41	—	—
	—	—	—	8:19	—	—	8:21	—	—	8:22	—	—	8:22	—	—	8:24	—	—	8:25

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 23°C on Sun afternoon, min 12°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 19°C on Tue afternoon, min 8°C on Wed 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. 46 minutes ago	12° C	Dry	Calm (0 kph at 342).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	8° C	-	Calm (0 kph at 62).
Renton 30 km WSW 160m alt. 56 minutes ago	13° C	Dry	Calm (0 kph at 262).
Black Diamond 32 km SSW 192m alt. 53 minutes ago		-	Calm (0 kph at 0).
Grotto wx 35 km NE 321m alt. 41 minutes ago	12° C	Dry	Calm (0 kph at 280).
Renton Airport 36 km WSW 218m alt. 2 hours ago	14° C	Clear	Calm (0 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 57 minutes ago	8° C	Dry	Calm (0 kph at 5).
Auburn 39 km SW 119m alt. 1 hour ago	7° C	Dry	Calm (0 kph at 235).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	10° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: broken Mid: broken
Woodinville 43 km WNW 137.2m alt. 1 hour ago	9° C	Dry	Calm (0 kph at 285).

* 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.