– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Tue 25 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Tue 25 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Warm (max 27°C on Tue afternoon, min 12°C on Thu night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Warm (max 20°C on Sun afternoon, min 10°C on Sat night). Wind will be generally light.
	Tue 25		Wednesday 26			Thursday 27			Friday 28			Saturday 29			Sunday 30
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	some clouds	rain shwrs	some clouds	rain shwrs	rain shwrs	light rain	rain shwrs	rain shwrs	clear	clear	clear	clear
Cloud base (m)	4150				9450	900	1600	900	450	850	800	500	850	8950		8800
km/h	W	SSE	W	WSW	SSE	W	WSW	S	WSW	W	W	W	WNW	E	NW	NW	NE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	0.2	—	0.4	0.1	0.3	0.4	0.2	—	—	—	—
max °C	27	22	20	23	20	16	21	17	14	16	14	13	16	14	16	20	16
min °C	27	15	16	23	13	14	18	12	12	15	12	11	16	10	13	19	12
chill °C	27	15	16	23	13	14	18	12	12	15	12	11	16	10	13	19	12

Freezing level m	4200	4200	4050	4000	3750	3400	3100	3350	3300	3150	2850	3200	3400	4050	3950	3900	3800

	—	—	6:16	—	—	6:18	—	—	6:18	—	—	6:20	—	—	6:22	—	—
	—	8:00	—	7:59	—	—	7:57	—	—	7:54	—	—	7:52	—	—	7:51	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 27°C on Tue afternoon, min 12°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 20°C on Sun 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. 34 minutes ago	19°C	Dry	Calm (3 kph at 207).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (3 kph at 240).
Renton Airport 36 km WSW 218m alt. 2 hours ago	23°C	Clear	Light winds from the S (17 kph at 180).	16 km
Auburn 39 km SW 119m alt. 38 minutes ago	24°C	Dry	Calm (0 kph at 246).
Monroe 44 km NW 80m alt. 1 hour ago	14°C	Dry	Calm (0 kph at 92).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	23°C	-	Light winds from the S (15 kph at 170).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	20°C	-	Light winds from the SSW (19 kph at 200).	16 km Low: few Mid: few
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	21°C	Dry	Wind obs. (8 kph from 213 degs) was rejected.
Seattle 49 km WSW 100m alt. 2 hours ago	28°C	-

* 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.