– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 am Wed 04 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 am Wed 04 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Very mild (max 17°C on Thu morning, min 8°C on Fri night). Wind will be generally light.									Days 4–6 Weather Summary Heavy rain (total 77mm), heaviest during Sun night. Very mild (max 10°C on Sat afternoon, min 1°C on Mon night). Wind will be generally light.
	Wednesday 4			Thursday 5			Friday 6			Saturday 7			Sunday 8			Monday 9
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	clear	clear	some clouds	clear	clear	some clouds	cloudy	light rain	mod. rain	mod. rain	heavy rain	light rain	mod. rain	heavy rain	light rain	rain shwrs	cloudy
km/h	SE	SE	ESE	ESE	SE	SSE	SSW	WSW	S	S	SSW	SSW	WSW	W	SW	SW	SW	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	0.1	7	8	23	5	7	25	3	0.7	—
max °C	15	14	10	17	15	10	14	12	9	9	10	9	6	6	4	4	5	4
min °C	14	11	10	13	10	9	13	10	8	9	9	6	6	5	3	3	4	1
chill °C	14	10	9	12	9	8	13	10	8	7	6	5	5	3	0	1	4	-2

Freezing level m	3550	3550	3800	3850	3800	3150	2800	2400	2050	2400	2300	2100	1350	1350	1050	1050	1150	1100
Cloud base (m)	4350	7900				9200	8800		2050	800	400	400	450	400	450	450	450	700

	7:28	—	—	7:26	—	—	7:26	—	—	7:24	—	—	7:22	—	—	7:20	—	—
	—	5:13	—	—	5:14	—	—	5:15	—	—	5:17	—	—	5:19	—	—	5:21	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 17°C on Thu morning, min 8°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 77mm), heaviest during Sun night. Very mild (max 10°C on Sat afternoon, min 1°C on Mon 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. 31 minutes ago	9° C	Dry	Calm (0 kph at 10).
Black Diamond 32 km SSW 192m alt. 1 hour ago	11° C	Dry	Wind obs. (6 kph from 360 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	10° C	Clear	Light winds from the SE (6 kph at 140).	16 km
Auburn 39 km SW 119m alt. 27 minutes ago	-4° C	-	Calm (0 kph at 24).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	2° C	Light rain .	Wind obs. (6 kph from 1 degs) was rejected.	1 km
SHIP8683 43 km W 3m alt. 3 hours ago	11° C		Calm (2 kph at 340).
SHIP2878 43 km W 15m alt. 2 hours ago			Calm (2 kph at 340).	- km
SHIP9697 43 km W 15m alt. 3 hours ago			Calm (2 kph at 340).	- km
SHIP7410 43 km W 3m alt. 3 hours ago	11° C		Calm (4 kph at 100).
SHIP10527 43 km W 15m alt. 3 hours ago			Calm (2 kph at 340).	- km

* 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.