– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Fri 28 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Fri 28 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 19mm), heaviest on Sat morning. Warm (max 21°C on Mon afternoon, min 9°C on Sat night). Wind will be generally light.										Days 5–7 Weather Summary Heavy rain (total 41mm), heaviest during Wed morning. Very mild (max 18°C on Tue afternoon, min 10°C on Wed night). Wind will be generally light.
		Saturday 29			Sunday 30			Monday 31			Tuesday 1			Wednesday 2
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	heavy rain	rain shwrs	rain shwrs	cloudy	some clouds	some clouds	clear	some clouds	rain shwrs	some clouds	light rain	mod. rain	heavy rain	rain shwrs	rain shwrs
Cloud base (m)	1800	450	700	1600	800	1900	5800	3300	3350	4900	3700	1950	400	400	500	1550
km/h	SSW	WNW	W	S	WSW	NNW	NE	W	WNW	S	SW	SW	S	SSW	SW	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	1.2	15	2	0.5	—	—	—	—	—	0.1	—	0.3	10	18	5	1.5
max °C	15	10	15	13	12	15	14	18	21	16	16	18	13	13	14	11
min °C	10	10	12	9	10	13	11	14	21	12	13	16	13	12	13	10
chill °C	9	9	12	9	10	13	11	14	21	12	13	16	12	11	12	9

Freezing level m	2600	2100	2400	2850	3100	3250	3600	3550	3650	3400	3150	2850	2850	2550	2450	2300

	—	6:20	—	—	6:22	—	—	6:22	—	—	6:24	—	—	6:26	—	—
	—	—	7:52	—	—	7:51	—	—	7:49	—	—	7:46	—	—	7:45	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 19mm), heaviest on Sat morning. Warm (max 21°C on Mon afternoon, min 9°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 41mm), heaviest during Wed morning. Very mild (max 18°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	15°C	Dry	Calm (2 kph at 35).
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	17°C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: broken Mid: overcast
Auburn 39 km SW 119m alt. 1 hour ago	19°C	Dry	Calm (0 kph at 252).
Monroe 44 km NW 80m alt. 1 hour ago	21°C	Dry	Calm (0 kph at 187).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	17°C	Dry and partly cloudy.	Light winds from the WNW (6 kph at 300).	16 km Low: scattered Mid: scattered High: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	16°C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: broken Mid: overcast
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 58 minutes ago	14°C	Dry	Calm (2 kph at 177).
Seattle 49 km WSW 100m alt. 1 hour ago	26°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.