– Lat/Long: 47.51° N 121.74° W

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

Issued: 10 pm Wed 26 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 10mm), heaviest on Sat morning. Very mild (max 18°C on Wed night, min 10°C on Sat morning). Wind will be generally light.										Days 5–7 Weather Summary Light rain (total 3mm), mostly falling on Sat night. Very mild (max 19°C on Mon afternoon, min 10°C on Sat night). Wind will be generally light.
		Thursday 27			Friday 28			Saturday 29			Sunday 30			Monday 31
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	rain shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	light rain	light rain	risk tstorm	rain shwrs	light rain	light rain	some clouds	some clouds	some clouds	some clouds
Cloud base (m)		800	950	900	450	700	700	400	500	650	700	1500		3350	3150	2200
km/h	S	SW	WSW	SW	SW	W	SW	WSW	W	SW	SW	WSW	ENE	WSW	W	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	0.1	0.2	0.9	0.1	0.1	2	4	3	1.5	0.1	0.1	—	—	—	—
max °C	18	17	17	15	12	17	14	10	14	12	11	14	12	16	19	15
min °C	13	14	17	11	12	15	11	10	12	10	10	14	11	13	18	11
chill °C	13	14	17	11	12	15	10	10	12	9	9	14	11	13	18	11

Freezing level m	3600	3150	3250	3250	3150	3100	2650	2150	2350	2650	2850	3050	3400	3150	3150	3000

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

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 10mm), heaviest on Sat morning. Very mild (max 18°C on Wed night, min 10°C on Sat morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 3mm), mostly falling on Sat night. Very mild (max 19°C on Mon 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. 1 hour ago	17°C	Dry	Calm (0 kph at 100).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 3 hours ago	22°C	Dry and cloudy.	Light winds from the SW (9 kph at 220).	16 km Low: broken Mid: overcast
Auburn 39 km SW 119m alt. 1 hour ago	23°C	Dry	Calm (0 kph at 74).
Monroe 44 km NW 80m alt. 2 hours ago	19°C	Dry	Calm (0 kph at 98).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	21°C	Dry and partly cloudy.	Light winds from the SSW (6 kph at 210).	16 km Mid: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	21°C	Dry and partly cloudy.	Moderate winds from the WSW (20 kph at 250).	16 km Low: broken
BUOY-EBSW1 46 km W 3m alt. 2 hours ago
Snohomish 49 km NW 196m alt. 1 hour ago	13°C	Dry	Calm (0 kph at 245).
Seattle 49 km WSW 100m alt. 1 hour ago	30°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.