– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Tue 28 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Tue 28 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Very mild (max 17°C on Thu morning, min 6°C on Tue morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 25°C on Sun afternoon, min 9°C on Fri night). Wind will be generally light.
	Tuesday 28			Wednesday 29			Thursday 30			Friday 1			Saturday 2			Sunday 3
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	rain shwrs	rain shwrs	clear	clear	clear	clear	some clouds	some clouds	some clouds	some clouds	rain shwrs	rain shwrs	cloudy	clear	clear	clear	clear
km/h	SW	W	N	NW	NW	ESE	W	NW	SE	WNW	NW	NNE	ENE	NNW	E	NE	NNW	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	0.1	0.4	—	—	—	—	—	—	—	—	0.1	0.1	—	—	—	—	—
max °C	6	9	8	12	16	12	17	17	14	14	15	11	15	19	16	23	25	20
min °C	6	7	7	8	15	10	12	17	10	11	15	9	10	18	15	18	24	17
chill °C	5	6	7	8	15	10	12	17	10	11	15	9	10	18	15	18	24	17

Freezing level m	1400	1600	1600	2200	2650	2800	2900	2950	2950	2750	2700	2800	2800	3150	3250	3400	3550	3550
Cloud base (m)	600	800	650	700						6400		2700	1900	5350			3300	9450

	5:54	—	—	5:52	—	—	5:52	—	—	5:50	—	—	5:48	—	—	5:47	—	—
	—	—	8:14	—	—	8:15	—	—	8:16	—	—	8:17	—	—	8:19	—	—	8:21

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 17°C on Thu morning, min 6°C on Tue morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 25°C on Sun afternoon, min 9°C on Fri 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. 1 hour ago	13° C	Dry	Calm (0 kph at 312).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	9° C	-	Calm (0 kph at 265).
Renton 30 km WSW 160m alt. 2 hours ago	10° C	Dry	Calm (2 kph at 110).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (2 kph at 0).
Grotto wx 35 km NE 321m alt. 42 minutes ago	11° C	Dry	Light winds from the SW (6 kph at 230).
Renton Airport 36 km WSW 218m alt. 2 hours ago	12° C	Dry and cloudy.	Light winds from the S (13 kph at 190).	16 km Low: scattered Mid: broken High: overcast
Grotto wx 39 km NE 1101m alt. 35 minutes ago	5° C	Dry	Calm (0 kph at 102).
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (3 kph at 234).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3° C	Dry and cloudy.	Wind obs. (7 kph from 1 degs) was rejected.	16 km Low: broken Mid: overcast
SHIP3694 42 km WSW 15m alt. 3 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.