– Lat/Long: 47.51° N 121.74° W

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

Issued: 10 pm Sat 02 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 24°C on Sun afternoon, min 11°C on Mon night). Wind will be generally light.										Days 5–7 Weather Summary Light rain (total 3mm), mostly falling on Fri afternoon. Very mild (max 18°C on Wed afternoon, min 8°C on Wed night). Wind will be generally light.
		Sunday 3			Monday 4			Tuesday 5			Wednesday 6			Thursday 7			Friday 8
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	some clouds	some clouds	some clouds	cloudy	light rain	mod. rain
km/h	ESE	WNW	NW	E	WNW	WNW	NNW	WNW	WNW	SSW	WSW	WSW	SW	WSW	W	S	SW	SW	W
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	3	9
max °C	18	22	24	19	20	22	18	16	20	17	16	18	14	12	15	13	12	14	8
min °C	15	19	23	16	17	21	11	13	19	11	13	17	8	9	15	9	10	8	8
chill °C	15	19	23	16	17	21	11	13	19	11	12	17	8	9	15	8	9	7	7

Freezing level m	3250	3350	3550	3550	3500	3550	3550	3550	3550	3650	3500	3350	3000	3250	3150	3200	2150	1800	2000
Cloud base (m)			8700		9200		3450				9300	8850	500	7100	5900	6050	3050	1750	400

	—	5:47	—	—	5:45	—	—	5:43	—	—	5:41	—	—	5:41	—	—	5:39	—	—
	—	—	—	8:21	—	—	8:22	—	—	8:22	—	—	8:24	—	—	8:25	—	—	8:27

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 24°C on Sun afternoon, min 11°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 3mm), mostly falling on Fri afternoon. Very mild (max 18°C on Wed 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. 44 minutes ago	11° C	Dry	Calm (0 kph at 347).
Renton 30 km WSW 160m alt. 3 hours ago	14° C	Dry	Calm (2 kph at 41).
Black Diamond 32 km SSW 192m alt. 47 minutes ago		-	Calm (5 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	13° C	Clear	Calm (0 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 3 hours ago	9° C	Dry	Calm (0 kph at 10).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	13° C	Clear	Calm (0 kph at 0).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	15° C	Clear	Calm (0 kph at 0).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	16° C	Clear	Light winds from the NE (7 kph at 40).	16 km
Snohomish 49 km NW 196m alt. 28 minutes ago	8° C	Dry	Calm (2 kph at 311).
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	13° C		Light winds from the NE (13 kph at 50).

* 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.