– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Sat 29 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Sat 29 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 2mm), mostly falling on Sat afternoon. Warm (max 22°C on Mon afternoon, min 9°C on Sat night). Wind will be generally light.											Days 5–7 Weather Summary Moderate rain (total 16mm), heaviest on Wed night. Warm (max 21°C on Tue afternoon, min 10°C on Wed night). Wind will be generally light.
	Sat 29		Sunday 30			Monday 31			Tuesday 1			Wednesday 2			Thursday 3
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	rain shwrs	some clouds	clear	clear	clear	some clouds	clear	some clouds	rain shwrs	rain shwrs	light rain	mod. rain	rain shwrs	rain shwrs	rain shwrs
Cloud base (m)	1750	1600	600	1850	6050	9200	6350	5850	5200	2050	850	1450	800	400	500	2400	2750
km/h	W	SW	W	NW	ENE	NNW	NW	SE	W	SW	SSW	SSW	SW	SW	SW	W	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	1.7	0.6	0.1	—	—	—	—	—	—	—	0.3	0.9	1.8	9	2	1.5	0.3
max °C	15	12	12	16	13	19	22	17	18	21	16	13	14	12	13	16	12
min °C	13	9	10	16	12	15	22	15	16	20	13	13	13	10	11	15	11
chill °C	12	9	10	16	12	15	22	15	16	20	13	13	12	9	11	15	11

Freezing level m	2450	3050	3300	3400	3700	3800	3850	3850	3750	3500	3050	2600	2700	2350	2250	2500	2700

	—	—	6:22	—	—	6:22	—	—	6:24	—	—	6:26	—	—	6:26	—	—
	7:52	—	—	7:51	—	—	7:49	—	—	7:46	—	—	7:45	—	—	7:44	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 2mm), mostly falling on Sat afternoon. Warm (max 22°C on Mon afternoon, min 9°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 16mm), heaviest on Wed night. Warm (max 21°C on Tue afternoon, min 10°C on Wed 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	16°C	Dry	Calm (0 kph at 226).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (3 kph at 0).
Renton Airport 36 km WSW 218m alt. 3 hours ago	19°C	Dry and cloudy.	Light winds from the SSW (11 kph at 200).	16 km Low: broken Mid: overcast
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (0 kph at 138).
Monroe 44 km NW 80m alt. 1 hour ago	17°C	Dry	Calm (0 kph at 12).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	19°C	Dry and partly cloudy.	Light winds from the SSW (9 kph at 210).	16 km Low: scattered Mid: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	18°C	Dry and partly cloudy.	Light winds from the SSW (17 kph at 210).	16 km Low: few Mid: scattered High: broken
BUOY-EBSW1 46 km W 3m alt. 2 hours ago
Snohomish 49 km NW 196m alt. 1 hour ago	15°C	Dry	Calm (3 kph at 166).
Seattle 49 km WSW 100m alt. 55 minutes 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.