– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Sat 02 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Sat 02 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Warm (max 23°C on Sun afternoon, min 11°C on Mon night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Very mild (max 19°C on Tue afternoon, min 7°C on Wed night). Wind will be generally light.
	Saturday 2			Sunday 3			Monday 4			Tuesday 5			Wednesday 6			Thursday 7
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	some clouds	some clouds	some clouds	some clouds
km/h	NE	NNW	ESE	NW	NW	ENE	WNW	WNW	SW	W	WNW	S	WSW	WSW	SW	WNW	NW	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	17	21	17	22	23	19	20	22	17	15	19	16	15	17	13	11	14	12
min °C	14	21	16	19	23	16	18	22	11	12	18	11	12	17	7	8	13	9
chill °C	14	21	16	19	23	16	18	22	11	12	18	11	12	17	6	8	13	9

Freezing level m	3150	3250	3250	3350	3500	3600	3500	3500	3500	3500	3500	3600	3600	3300	2900	3350	3550	3600
Cloud base (m)	700	3050					9350	9000			9400		9500	2100	1650	700		6750

	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 11°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 19°C on Tue afternoon, min 7°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. 2 hours ago	26° C	Dry	Calm (0 kph at 242).
Snoqualmie Pass 30 km ESE 824m alt. 56 minutes ago	24° C	-	Calm (0 kph at 341).
Renton 30 km WSW 160m alt. 1 hour ago	24° C	Dry	Calm (3 kph at 341).
Black Diamond 32 km SSW 192m alt. 44 minutes ago		-	Calm (5 kph at 0).
Grotto wx 35 km NE 321m alt. 24 minutes ago	25° C	Dry	Light winds from the WSW (8 kph at 251).
Renton Airport 36 km WSW 218m alt. 2 hours ago	21° C	Clear	Moderate winds from the NNW (22 kph at 330).	16 km
Grotto wx 39 km NE 1101m alt. 58 minutes ago	22° C	Dry	Calm (3 kph at 152).
Auburn 39 km SW 119m alt. 43 minutes ago	19° C	Dry	Wind obs. (6 kph from 188 degs) was rejected.
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	19° C	Clear	Calm (0 kph at 0).	16 km
SHIP4130 43 km W 15m alt. 2 hours ago				- 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.