– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Mon 24 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Mon 24 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Warm (max 28°C on Tue afternoon, min 13°C on Wed night). Wind will be generally light.									Days 4–6 Weather Summary Light rain (total 10mm), mostly falling on Sat afternoon. Warm (max 20°C on Thu afternoon, min 10°C on Sat night). Wind will be generally light.
	Monday 24			Tuesday 25			Wednesday 26			Thursday 27			Friday 28			Saturday 29
	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	rain shwrs	rain shwrs	rain shwrs	rain shwrs	some clouds	rain shwrs	rain shwrs	risk tstorm	rain shwrs
Cloud base (m)			8700		4150					800	950	1550	550	1550	1900	1800	2000	900
km/h	NNE	NNW	ESE	SW	WSW	E	W	WSW	SSE	WSW	WSW	S	WSW	W	WSW	WSW	W	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	0.1	0.3	0.1	0.2	—	0.1	1.8	5	2
max °C	23	27	21	26	28	22	21	24	19	16	20	16	15	19	16	13	14	12
min °C	17	26	20	22	28	16	17	23	13	14	17	11	12	18	12	12	14	10
chill °C	17	26	20	22	28	16	17	23	13	14	17	11	12	18	12	12	14	10

Freezing level m	4050	4100	4150	4200	4250	4250	4100	4000	3800	3500	2900	3200	3350	3250	3000	2400	2550	2400

	6:13	—	—	6:15	—	—	6:16	—	—	6:18	—	—	6:18	—	—	6:20	—	—
	—	—	8:02	—	—	8:00	—	7:59	—	—	7:57	—	—	7:54	—	—	7:52	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 28°C on Tue afternoon, min 13°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 10mm), mostly falling on Sat afternoon. Warm (max 20°C on Thu afternoon, min 10°C on Sat 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. 3 hours ago	21°C	Dry	Wind obs. (6 kph from 301 degs) was rejected.
Black Diamond 32 km SSW 192m alt. 3 hours ago		-	Calm (5 kph at 352).
Renton Airport 36 km WSW 218m alt. 2 hours ago	22°C	Clear	Light winds from the NNW (19 kph at 340).	16 km
Monroe 44 km NW 80m alt. 44 minutes ago	17°C	Dry	Calm (0 kph at 91).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	22°C	-	Light winds from the NW (15 kph at 310).	16 km Low: few
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	22°C	-	Moderate winds from the N (22 kph at 350).	16 km Low: few
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	24°C	Dry	Wind obs. (8 kph from 360 degs) was rejected.
Seattle 49 km WSW 100m alt. 46 minutes ago		-	Wind obs. (13 kph from 238 degs) was rejected.
BUOY-WPOW1 55 km W 3m alt. 50 minutes ago	16°C		Moderate winds from the NNE (28 kph at 30).

* 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.