– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Wed 18 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Wed 18 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Freeze-thaw conditions (max 6°C on Sat morning, min -4°C on Thu night). Wind will be generally light.											Days 5–7 Weather Summary Heavy rain (total 27mm), heaviest during Sun night. Mild temperatures (max 8°C on Sun morning, min 2°C on Mon night). Wind will be generally light.
	Wed 18		Thursday 19			Friday 20			Saturday 21			Sunday 22			Monday 23
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	cloudy	cloudy	some clouds	some clouds	cloudy	some clouds	some clouds	some clouds	cloudy	some clouds	light rain	light rain	heavy rain	mod. rain	rain shwrs	rain shwrs
km/h	SW	E	WNW	WNW	SSE	SW	SW	ESE	ESE	ESE	ESE	ESE	SE	E	S	SW	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	0.7	0.5	16	7	2	0.6
max °C	1	-1	-1	-1	-3	1	1	0	6	5	4	8	7	5	7	6	4
min °C	0	-3	-2	-2	-4	-1	-1	-1	4	3	3	5	5	3	5	3	2
chill °C	0	-3	-2	-2	-4	-5	-3	-3	0	-2	-2	1	2	3	2	1	2

Freezing level m	600	100	150	300	0	400	700	350	1150	1400	1550	1500	1300	1200	1600	1350	1250
Cloud base (m)	450	1500	1450	400	800	400	450	650	2200	2550	2600	2150	1900	400	400	550	800

	—	—	7:05	—	—	7:03	—	—	7:01	—	—	6:58	—	—	6:58	—	—
	5:35	—	—	5:36	—	—	5:37	—	—	5:39	—	—	5:40	—	—	5:43	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Freeze-thaw conditions (max 6°C on Sat morning, min -4°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 27mm), heaviest during Sun night. Mild temperatures (max 8°C on Sun morning, min 2°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. 1 hour ago	-1° C	-	Calm (0 kph at 358).
Black Diamond 32 km SSW 192m alt. 57 minutes ago		-	Calm (2 kph at 221).
Renton Airport 36 km WSW 218m alt. 2 hours ago	2° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: few Mid: broken High: broken
Auburn 39 km SW 119m alt. 1 hour ago	3° C	Dry	Calm (0 kph at 11).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-4° C	Mist -.	Calm (0 kph at 0).	6 km Low: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	2° C	Moderate rain .	Calm (0 kph at 0).	6 km Mid: few High: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	3° C	Dry and cloudy.	Light winds from the E (7 kph at 90).	16 km Low: few Mid: scattered High: overcast
Snohomish 49 km NW 196m alt. 48 minutes ago	1° C	-	Wind obs. (16 kph from 19 degs) was rejected.
SHIP6487 54 km W 15m alt. 2 hours ago			Light winds from the ESE (10 kph at 110).	- km
SHIP3545 54 km W 3m alt. 2 hours ago	4° C		Light winds from the ESE (8 kph at 110).

* 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.