– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Mon 31 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Mon 31 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Moderate rain (total 14mm), heaviest on Wed night. Warm (max 23°C on Mon afternoon, min 8°C on Wed night). Wind will be generally light.											Days 5–7 Weather Summary Some drizzle, heaviest during Thu afternoon. Very mild (max 19°C on Sat afternoon, min 9°C on Fri night). Wind will be generally light.
	Mon 31		Tuesday 1			Wednesday 2			Thursday 3			Friday 4			Saturday 5
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	clear	rain shwrs	rain shwrs	rain shwrs	light rain	rain shwrs	rain shwrs	rain shwrs	rain shwrs	some clouds	light rain	rain shwrs	some clouds	some clouds	some clouds
Cloud base (m)	5600	4950	5000	1750	1550	2400	500	400	2000	800	1450	1900	1600	1900		6600	4000
km/h	NNW	SSE	WSW	SW	SSW	SW	SSW	SSW	WSW	WSW	SW	WNW	WNW	E	NW	NW	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	0.2	0.8	1.1	4	7	0.3	1	0.4	—	0.2	0.2	—	—	—
max °C	23	18	17	19	15	15	12	11	13	13	11	13	15	12	16	19	14
min °C	23	15	15	18	13	13	12	8	10	11	10	10	14	9	11	18	12
chill °C	23	15	15	18	12	13	12	7	10	11	10	10	14	9	11	18	12

Freezing level m	3850	3850	3600	3350	3050	2650	2500	2050	2150	2250	2250	2250	2400	2450	2650	2900	3000

	—	—	6:24	—	—	6:26	—	—	6:26	—	—	6:28	—	—	6:30	—	—
	7:49	—	—	7:46	—	—	7:45	—	—	7:44	—	—	7:42	—	—	7:39	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 14mm), heaviest on Wed night. Warm (max 23°C on Mon afternoon, min 8°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Thu afternoon. Very mild (max 19°C on Sat afternoon, min 9°C on Fri 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. 54 minutes ago	24°C	Dry	Calm (3 kph at 312).
Black Diamond 32 km SSW 192m alt. 54 minutes ago	26°C	Dry	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 3 hours ago	24°C	Clear	Light winds from the NNW (17 kph at 330).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	27°C	Dry	Light winds from the N (6 kph at 5).
Monroe 44 km NW 80m alt. 2 hours ago	13°C	Dry	Calm (0 kph at 250).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	24°C	Clear	Light winds from the NW (13 kph at 310).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	24°C	Dry and partly cloudy.	Light winds from the NNW (13 kph at 340).	16 km Low: few Mid: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 38 minutes ago	23°C	Dry	Calm (5 kph at 229).
Seattle 49 km WSW 100m 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.