– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Sun 06 Sep Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Sun 06 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 15°C on Tue afternoon, min 7°C on Sun night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Very mild (max 19°C on Wed afternoon, min 4°C on Fri night). Wind will be generally light.
	Sunday 6			Monday 7			Tuesday 8			Wednesday 9			Thursday 10			Friday 11
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	clear	cloudy	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	clear	some clouds	some clouds	rain shwrs
Cloud base (m)	6250	2650		500	700	7400							5800	1600			1800	550
km/h	NE	WNW	WSW	WSW	NW	N	ESE	N	SE	S	W	WSW	SW	SW	SSW	SW	WSW	NNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.4
max °C	10	12	10	7	9	9	12	15	15	18	19	16	12	13	11	6	7	6
min °C	9	11	7	7	7	8	10	13	15	16	18	13	12	12	7	5	7	4
chill °C	8	10	5	5	7	6	10	13	15	16	18	12	10	10	4	2	5	0

Freezing level m	2650	2750	2700	2550	2800	3250	3550	3750	4000	4400	4400	4250	3800	3700	3450	2600	2500	2050

	6:31	—	—	6:33	—	—	6:33	—	—	6:35	—	—	6:37	—	—	6:37	—	—
	—	7:37	—	—	7:36	—	—	7:32	—	—	7:30	—	—	7:29	—	—	7:27	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 15°C on Tue afternoon, min 7°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 19°C on Wed afternoon, min 4°C on Fri 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	19°C	Dry	Calm (3 kph at 321).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Wind obs. (6 kph from 348 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	20°C	Clear	Light winds from the N (7 kph at 1).	16 km
Auburn 39 km SW 119m alt. 46 minutes ago		-	Calm (0 kph at 88).
SHIP5948 43 km W 3m alt. 2 hours ago	17°C
SHIP9665 43 km W 15m alt. 3 hours ago				- km
SHIP10485 43 km W 3m alt. 2 hours ago	17°C
SHIP7369 43 km W 15m alt. 3 hours ago				- km
SHIP8631 43 km W 3m alt. 3 hours ago	17°C
SHIP9271 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.