– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Sat 22 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Sat 22 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Some drizzle, heaviest during Sun morning. Warm (max 27°C on Tue morning, min 13°C on Sat night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Warm (max 29°C on Tue afternoon, min 10°C on Thu night). Wind will be generally light.
	Sat 22		Sunday 23			Monday 24			Tuesday 25			Wednesday 26			Thursday 27
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	rain shwrs	rain shwrs	clear
Cloud base (m)	650	850	550	1550										8150	750	900	8250
km/h	W	WSW	WSW	NW	ENE	NNW	NNW	ESE	W	W	SSE	W	W	SE	WSW	WNW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	0.3	1	0.3	—	—	—	—	—	—	—	—	—	—	0.1	0.1	—
max °C	20	17	14	18	17	22	25	21	27	29	24	20	23	18	15	20	16
min °C	19	13	13	17	13	17	25	20	22	29	16	17	22	12	14	18	10
chill °C	19	12	13	17	13	17	25	20	22	29	16	17	22	12	14	18	10

Freezing level m	3650	3250	3150	3600	4050	4050	4200	4200	4300	4350	4250	4100	4050	4000	3650	3350	3650

	—	—	6:13	—	—	6:13	—	—	6:15	—	—	6:16	—	—	6:18	—	—
	—	8:07	—	—	8:05	—	—	8:02	—	—	8:00	—	7:59	—	—	7:57	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Sun morning. Warm (max 27°C on Tue morning, min 13°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 29°C on Tue afternoon, min 10°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	20°C	Dry	Calm (3 kph at 179).
Black Diamond 32 km SSW 192m alt. 50 minutes ago		-	Calm (5 kph at 77).
Renton Airport 36 km WSW 218m alt. 2 hours ago	23°C	-	Light winds from the N (6 kph at 1).	16 km Low: few
Auburn 39 km SW 119m alt. 43 minutes ago	28°C	Dry	Calm (0 kph at 90).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	23°C	Dry and partly cloudy.	Light winds from the SW (11 kph at 230).	16 km Low: scattered
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	22°C	Dry and partly cloudy.	Light winds from the WNW (19 kph at 290).	16 km Low: few Mid: scattered
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 2 hours ago	19°C	Dry	Wind obs. (8 kph from 199 degs) was rejected.
Seattle 49 km WSW 100m alt. 45 minutes ago	31°C	-
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	18°C		Light winds from the NE (18 kph at 40).

* 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.