– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Wed 26 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Wed 26 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Some drizzle, heaviest during Fri night. Warm (max 23°C on Wed afternoon, min 10°C on Fri night). Wind will be generally light.									Days 4–6 Weather Summary Light rain (total 9mm), mostly falling on Sat morning. Very mild (max 14°C on Sat afternoon, min 10°C on Sat morning). Wind will be generally light.
	Wednesday 26			Thursday 27			Friday 28			Saturday 29			Sunday 30			Monday 31
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	rain shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	light rain	light rain	rain shwrs	rain shwrs	rain shwrs	light rain	some clouds	light rain	light rain	some clouds
Cloud base (m)		9450		600	1800	850	550	900	750	450	700	500	650	850	2700	1950	400	900
km/h	W	WSW	SE	SW	WSW	SW	WSW	WSW	SSW	SW	W	SW	WSW	WSW	ESE	WSW	SSW	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	0.1	0.2	0.4	0.2	0.2	0.8	3	2	1.1	0.1	0.1	—	0.1	2	—
max °C	20	23	19	15	19	16	14	16	14	10	14	13	11	13	13	14	13	12
min °C	16	22	13	14	18	12	12	15	10	10	13	10	10	13	11	12	12	12
chill °C	16	22	13	14	18	12	12	15	9	9	12	10	10	13	11	12	12	12

Freezing level m	4000	3950	3650	3200	3400	3400	3150	3050	2450	2200	2500	3050	3050	3100	3200	2900	2900	2600

	6:16	—	—	6:18	—	—	6:18	—	—	6:20	—	—	6:22	—	—	6:22	—	—
	—	7:59	—	—	7:57	—	—	7:54	—	—	7:52	—	—	7:51	—	—	7:49	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Fri night. Warm (max 23°C on Wed afternoon, min 10°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 9mm), mostly falling on Sat morning. Very mild (max 14°C on Sat afternoon, min 10°C on Sat morning). 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. 2 hours ago	16°C	Dry	Calm (0 kph at 196).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (5 kph at 78).
Renton Airport 36 km WSW 218m alt. 3 hours ago	17°C	Dry and cloudy.	Light winds from the S (9 kph at 170).	16 km Low: overcast
Auburn 39 km SW 119m alt. 2 hours ago	29°C	Dry	Calm (0 kph at 81).
Monroe 44 km NW 80m alt. 1 hour ago	28°C	Dry	Calm (0 kph at 76).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	17°C	Dry and cloudy.	Light winds from the S (11 kph at 190).	16 km Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	16°C	Dry and cloudy.	Light winds from the SSW.(Wind varies from 011 to 017 degs) (9 kph at 200).	16 km Low: overcast
BUOY-EBSW1 46 km W 3m alt. 2 hours ago
Snohomish 49 km NW 196m alt. 2 hours ago	19°C	Dry	Wind obs. (6 kph from 167 degs) was rejected.
Seattle 49 km WSW 100m alt. 1 hour ago		-	Light winds from the SW (11 kph at 232).

* 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.