– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Thu 27 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Thu 27 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Moderate rain (total 16mm), heaviest on Sat morning. Very mild (max 18°C on Fri afternoon, min 10°C on Fri night). Wind will be generally light.									Days 4–6 Weather Summary Some drizzle, heaviest during Tue night. Warm (max 20°C on Mon afternoon, min 9°C on Tue night). Wind will be generally light.
	Thursday 27			Friday 28			Saturday 29			Sunday 30			Monday 31			Tuesday 1
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	light rain	cloudy	some clouds	some clouds	some clouds	clear	clear	light rain	light rain
Cloud base (m)	750	1750	750	550		850	400	800	1750	550	1750	3650	4650	7900	3450		1800	1700
km/h	SW	SW	SW	WSW	W	WSW	SW	SW	SSW	SSW	WSW	ENE	W	WNW	SE	WSW	WSW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.2	1.1	1.4	0.1	0.1	0.5	7	4	1.4	0.1	—	—	—	—	—	—	0.1	1.3
max °C	17	17	15	13	18	15	11	14	12	11	14	13	17	20	16	16	18	14
min °C	14	16	12	12	16	10	10	12	10	10	12	11	13	19	12	13	17	9
chill °C	14	16	12	12	16	9	8	11	10	9	12	11	13	19	12	13	17	8

Freezing level m	3100	3050	3200	3300	3250	2550	2150	2400	2700	2900	3050	3400	3400	3500	3450	3250	2900	2250

	6:18	—	—	6:18	—	—	6:20	—	—	6:22	—	—	6:22	—	—	6:24	—	—
	—	7:57	—	—	7:54	—	—	7:52	—	—	7:51	—	—	7:49	—	—	7:46	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 16mm), heaviest on Sat morning. Very mild (max 18°C on Fri afternoon, min 10°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Tue night. Warm (max 20°C on Mon afternoon, min 9°C on Tue 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. 59 minutes ago	21°C	Dry	Light winds from the SSW (11 kph at 204).
Black Diamond 32 km SSW 192m alt. 55 minutes ago		-	Calm (5 kph at 15).
Renton Airport 36 km WSW 218m alt. 3 hours ago	22°C	Dry and cloudy.	Light winds from the S (17 kph at 180).	16 km Low: broken Mid: overcast
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (0 kph at 9).
Monroe 44 km NW 80m alt. 1 hour ago	22°C	Dry	Calm (0 kph at 277).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	21°C	Dry and partly cloudy.	Light winds from the SSW (19 kph at 210).	16 km Low: scattered Mid: broken High: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	20°C	Dry and partly cloudy.	Moderate winds from the WSW (24 kph at 240).	16 km Low: scattered Mid: broken High: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 49 minutes ago	22°C	Dry	Light winds from the SW (10 kph at 233).
Seattle 49 km WSW 100m alt. 1 hour ago	27°C	-	Calm (2 kph at 99).

* 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.