– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Sun 30 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Sun 30 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 Wed morning. Warm (max 23°C on Mon afternoon, min 12°C on Sun night). Wind will be generally light.											Days 5–7 Weather Summary Heavy rain (total 24mm), heaviest during Wed night. Very mild (max 16°C on Fri afternoon, min 8°C on Thu night). Wind will be generally light.
	Sun 30		Monday 31			Tuesday 1			Wednesday 2			Thursday 3			Friday 4
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	clear	clear	some clouds	some clouds	clear	some clouds	rain shwrs	rain shwrs	light rain	heavy rain	light rain	rain shwrs	rain shwrs	rain shwrs	clear	clear
Cloud base (m)	800	6000	9250	6750	5300	8450	2000	750	2250	1650	450	600	500	800	800	1750
km/h	NNW	ENE	NW	NW	SSE	W	WSW	SSW	SW	SSW	SW	SW	SW	SSW	WNW	NNW	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	—	—	—	—	—	—	0.1	1.2	4	13	1.4	4	1.6	0.2	—	—
max °C	17	14	20	23	18	18	20	16	15	15	12	10	11	9	12	16	12
min °C	15	12	15	23	15	16	20	13	13	14	9	10	10	8	9	15	10
chill °C	15	12	15	23	15	16	20	13	13	14	7	8	8	6	9	15	10

Freezing level m	3500	3850	3850	3850	3900	3650	3500	3300	2650	2700	2050	1950	2100	2000	2250	2750	2900

	—	—	6:22	—	—	6:24	—	—	6:26	—	—	6:26	—	—	6:28	—	—
	7:51	—	—	7:49	—	—	7:46	—	—	7:45	—	—	7:44	—	—	7:42	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Wed morning. Warm (max 23°C on Mon afternoon, min 12°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 24mm), heaviest during Wed night. Very mild (max 16°C on Fri afternoon, min 8°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. 54 minutes ago	20°C	Dry	Calm (3 kph at 1).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (5 kph at 261).
Renton Airport 36 km WSW 218m alt. 2 hours ago	22°C	-	Light winds from the NNW (13 kph at 340).	16 km Low: few
Auburn 39 km SW 119m alt. 50 minutes ago		-	Calm (2 kph at 43).
Monroe 44 km NW 80m alt. 45 minutes ago	13°C	Dry	Calm (0 kph at 15).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	21°C	Dry and partly cloudy.	Light winds from the N (7 kph at 1).	16 km Low: few Mid: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	21°C	Dry and partly cloudy.	Light winds from the WNW (13 kph at 300).	16 km Low: scattered Mid: broken High: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 2 hours ago	19°C	Dry	Calm (3 kph at 173).
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.