– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 am Wed 21 Jan Local Time
Updates in:
hr min s
Update imminent

Issued: 3 am Wed 21 Jan 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 10°C on Wed morning, min 2°C on Thu night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Mild temperatures (max 9°C on Sat morning, min 2°C on Sat night). Wind will be generally light.
	Wednesday 21			Thursday 22			Friday 23			Saturday 24			Sunday 25			Monday 26
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	some clouds	some clouds	some clouds	clear	clear	clear	clear	some clouds	some clouds	clear	clear	clear	some clouds	some clouds	some clouds	some clouds
km/h	ESE	ESE	ESE	SSE	WNW	ESE	ESE	ESE	E	ESE	SE	ESE	SE	S	SSE	SW	W	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	10	8	4	7	5	2	8	7	2	9	7	3	9	7	3	7	6	3
min °C	7	5	3	6	3	2	5	3	2	6	3	2	6	3	2	5	3	3
chill °C	7	4	3	6	2	1	3	1	0	5	1	0	5	1	0	5	3	2

Freezing level m	2700	2600	2400	2000	1750	1500	1800	1900	2000	2200	2250	2200	2100	2000	1700	1450	1450	1750
Cloud base (m)	7050	7050		6400	6000	4200	8700							8600		6950	3300	6050

	7:45	—	—	7:43	—	—	7:43	—	—	7:41	—	—	7:41	—	—	7:39	—	—
	—	4:51	—	—	4:52	—	—	4:53	—	—	4:55	—	—	4:57	—	—	4:59	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 10°C on Wed morning, min 2°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Mild temperatures (max 9°C on Sat morning, min 2°C on Sat 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. 26 minutes ago	2° C	-	Calm (0 kph at 79).
Black Diamond 32 km SSW 192m alt. 50 minutes ago	15° C	Dry	Calm (5 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	-2° C	Fog freezing -.	Wind obs. (7 kph from 170 degs) was rejected.	0 km
Auburn 39 km SW 119m alt. 2 hours ago	-1° C	-	Calm (0 kph at 243).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-8° C	Mist -.	Wind obs. (7 kph from 1 degs) was rejected.	1 km
SHIP4264 43 km W 3m alt. 3 hours ago	0° C		Calm (5 kph at 160).
SHIP4727 43 km W 15m alt. 3 hours ago	10° C		Calm (6 kph at 160).	- km
SHIP7400 43 km W 3m alt. 3 hours ago	0° C		Calm (5 kph at 160).
SHIP212 43 km W -m alt. 1 hour ago	0° C	-	Light winds from the S (11 kph at 170).
SHIP19 43 km W -m alt. 1 hour ago	0° C	No report.	Light winds from the S (9 kph at 170).

* 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.