– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Mon 07 Sep Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Mon 07 Sep 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 16°C on Wed morning, min 6°C on Mon morning). Wind will be generally light.									Days 4–6 Weather Summary Some drizzle, heaviest during Sat afternoon. Very mild (max 11°C on Fri night, min 5°C on Thu night). Wind will be generally light.
	Monday 7			Tuesday 8			Wednesday 9			Thursday 10			Friday 11			Saturday 12
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	rain shwrs	clear	clear	clear	clear	clear	some clouds	clear	light rain	rain shwrs	some clouds	cloudy	cloudy	some clouds	light rain	light rain	rain shwrs
Cloud base (m)	450	750	6800			9650	9400		6550	550		900	650	800	5800	700	650	650
km/h	SW	NW	N	ESE	NNW	SSE	SW	WSW	SW	SW	WSW	NW	SSE	SE	E	WNW	NW	WNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.5	0.1	—	—	—	—	—	—	—	0.2	0.1	—	—	—	—	0.4	1.1	0.1
max °C	7	9	9	11	14	14	16	16	15	9	10	9	6	9	11	9	6	7
min °C	6	8	8	9	13	14	14	16	10	8	8	5	6	8	10	7	6	6
chill °C	4	8	6	8	13	14	14	16	8	5	6	4	5	8	8	6	4	5

Freezing level m	2550	2800	3300	3500	3700	4100	4450	4350	4000	3450	3150	3200	3100	2900	2800	2450	2600	3100

	6:33	—	—	6:33	—	—	6:35	—	—	6:37	—	—	6:37	—	—	6:39	—	—
	—	7:36	—	—	7:32	—	—	7:30	—	—	7:29	—	—	7:27	—	—	7:24	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 16°C on Wed morning, min 6°C on Mon morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Sat afternoon. Very mild (max 11°C on Fri night, min 5°C on Thu 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
Renton 30 km WSW 160m alt. 1 hour ago	18°C	Dry	Calm (3 kph at 239).
Black Diamond 32 km SSW 192m alt. 46 minutes ago		-	Light winds from the WNW (10 kph at 283).
Renton Airport 36 km WSW 218m alt. 3 hours ago	17°C	Dry and cloudy.	Light winds from the S (7 kph at 190).	16 km Low: overcast
Auburn 39 km SW 119m alt. 45 minutes ago		-	Calm (2 kph at 248).
Monroe 44 km NW 80m alt. 37 minutes ago	21°C	Dry	Calm (0 kph at 258).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	16°C	Dry and cloudy.	Light winds from the S (7 kph at 180).	16 km Low: scattered Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	17°C	Dry and partly cloudy.	Light winds from the SW (13 kph at 220).	16 km Low: scattered Mid: broken High: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 2 hours ago	17°C	Dry	Wind obs. (13 kph from 214 degs) was rejected.
Seattle 49 km WSW 100m alt. 3 hours ago		-	Light winds from the SW (8 kph at 228).

* 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.