– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Sun 23 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Sun 23 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Some drizzle, heaviest during Sun morning. Warm (max 28°C on Tue afternoon, min 13°C on Sun morning). Wind will be generally light.									Days 4–6 Weather Summary Some drizzle, heaviest during Wed night. Warm (max 22°C on Wed afternoon, min 11°C on Thu night). Wind will be generally light.
	Sunday 23			Monday 24			Tuesday 25			Wednesday 26			Thursday 27			Friday 28
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	clear	rain shwrs	rain shwrs	clear	some clouds	some clouds	rain shwrs	rain shwrs
Cloud base (m)	500	950				9450		4750		9450	2250	900		8700		500	900	1600
km/h	W	NW	NE	N	NNW	ESE	W	WSW	SSE	WSW	W	WSW	W	NW	NNE	NW	WNW	W
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.7	0.5	—	—	—	—	—	—	—	—	—	0.5	0.3	—	—	—	0.2	0.2
max °C	15	19	16	22	25	21	26	28	23	19	22	17	15	19	15	15	17	15
min °C	13	18	14	17	25	20	22	27	15	16	21	13	12	18	11	12	16	12
chill °C	13	18	14	17	25	20	22	27	15	16	21	13	12	18	11	12	16	12

Freezing level m	3250	3600	4000	4050	4150	4200	4250	4250	4250	3950	3800	3400	3450	3500	3550	3350	3350	3250

	6:13	—	—	6:13	—	—	6:15	—	—	6:16	—	—	6:18	—	—	6:18	—	—
	—	—	8:05	—	—	8:02	—	—	8:00	—	7:59	—	—	7:57	—	—	7:54	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Sun morning. Warm (max 28°C on Tue afternoon, min 13°C on Sun morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Wed night. Warm (max 22°C on Wed afternoon, min 11°C on Thu 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
Renton 30 km WSW 160m alt. 1 hour ago	15°C	Dry	Calm (0 kph at 86).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	16°C	Dry and cloudy.	Light winds from the S (6 kph at 170).	16 km Low: scattered Mid: broken High: overcast
Auburn 39 km SW 119m alt. 1 hour ago	19°C	Dry	Calm (0 kph at 148).
SHIP6616 43 km W 15m alt. 1 hour ago				- km
SHIP4423 43 km W 3m alt. 1 hour ago	18°C
Monroe 44 km NW 80m alt. 2 hours ago		-	Calm (0 kph at 173).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	16°C	Dry and partly cloudy.	Light winds from the SSE (7 kph at 150).	16 km Low: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	16°C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: few Mid: broken High: overcast
BUOY-EBSW1 46 km W 3m alt. 1 hour ago

* 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.