– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Sun 30 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Sun 30 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Warm (max 22°C on Mon afternoon, min 11°C on Sun morning). Wind will be generally light.									Days 4–6 Weather Summary Heavy rain (total 41mm), heaviest during Wed night. Very mild (max 16°C on Wed morning, min 8°C on Thu night). Wind will be generally light.
	Sunday 30			Monday 31			Tuesday 1			Wednesday 2			Thursday 3			Friday 4
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	clear	clear	clear	some clouds	some clouds	some clouds	rain shwrs	rain shwrs	light rain	heavy rain	rain shwrs	rain shwrs	rain shwrs	clear	some clouds	rain shwrs
Cloud base (m)	650	1600		9200	8550	5250	8100	2050	1650	1900	1550	400	750	700	2450	7300	2000	2200
km/h	WNW	NW	ENE	NW	NW	SE	W	WSW	SW	WSW	SW	SW	SW	SW	SSE	W	NW	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.3	0.1	—	—	—	—	—	—	0.1	0.2	4	24	4	6	1.7	—	—	0.5
max °C	13	17	13	20	22	18	18	21	16	16	15	12	10	12	10	12	15	11
min °C	11	16	12	15	22	15	16	20	13	13	13	10	9	10	8	9	15	9
chill °C	11	16	12	15	22	15	16	20	12	12	12	8	7	8	8	9	15	9

Freezing level m	3300	3450	3800	3850	3850	3900	3700	3500	3350	2700	2650	2450	1900	2150	2050	2150	2400	2300

	6:22	—	—	6:22	—	—	6:24	—	—	6:26	—	—	6:26	—	—	6:28	—	—
	—	7:51	—	—	7:49	—	—	7:46	—	—	7:45	—	—	7:44	—	—	7:42	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 22°C on Mon afternoon, min 11°C on Sun morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 41mm), heaviest during Wed night. Very mild (max 16°C on Wed morning, min 8°C on Thu 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
Harman Heights wx 6 km SSW 251m alt. 2 hours ago	17°C	Dry	Calm (2 kph at 295).
Renton 30 km WSW 160m alt. 2 hours ago	18°C	Dry	Calm (2 kph at 156).
Renton Airport 36 km WSW 218m alt. 2 hours ago	18°C	Clear	Calm (0 kph at 0).	16 km
Auburn 39 km SW 119m alt. 2 hours ago		-	Calm (0 kph at 213).
Monroe 44 km NW 80m alt. 3 hours ago	26°C	Dry	Calm (0 kph at 124).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	17°C	Dry and partly cloudy.	Wind obs. (7 kph from 1 degs) was rejected.	16 km Low: scattered
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	16°C	Dry and partly cloudy.	Light winds from the N (9 kph at 1).	16 km Low: scattered Mid: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 2 hours ago	17°C	Dry	Light winds from the S (11 kph at 178).
Seattle 49 km WSW 100m alt. 1 hour ago		-	Light winds from the SSE (6 kph at 161).

* 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.