– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 am Wed 10 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 9 am Wed 10 Dec Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Heavy rain (total 106mm), heaviest during Wed morning. Very mild (max 12°C on Wed morning, min 6°C on Thu morning). Winds decreasing (strong winds from the SW on Wed morning, calm by Thu morning).									Days 4–6 Weather Summary Heavy rain (total 39mm), heaviest during Mon morning. Very mild (max 14°C on Sat morning, min 4°C on Mon night). Winds increasing (light winds from the SSW on Sat morning, strong winds from the SW by Mon afternoon).
	Wednesday 10			Thursday 11			Friday 12			Saturday 13			Sunday 14			Monday 15
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	heavy rain	heavy rain	heavy rain	heavy rain	light rain	light rain	light rain	rain shwrs	rain shwrs	clear	some clouds	light rain	light rain	light rain	mod. rain	heavy rain	mod. rain	rain shwrs
km/h	SW	SW	WSW	W	WSW	WSW	WSW	WSW	SW	SSW	SSW	SSW	S	SSW	S	S	SW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	30	26	34	11	1.6	2	0.7	0.7	0.3	—	—	0.4	0.3	0.2	7	16	10	6
max°C	12	12	12	7	7	9	10	10	9	14	12	11	11	10	10	11	11	7
min°C	12	12	7	6	7	8	9	10	9	11	11	9	10	10	10	10	10	4
chill°C	8	9	6	6	6	6	7	9	8	10	10	7	9	9	9	7	6	0

Freezing level (m)	2800	3000	2450	1650	2250	2650	2800	3100	3400	3200	2850	2550	2350	2150	2450	2600	2250	1300
Cloud base (m)	400	400	400	450	450	450	450	550	850	9000		2550	750	900	750	400	400	650

	7:43	—	—	7:43	—	—	7:45	—	—	7:46	—	—	7:47	—	—	7:48	—	—
	—	4:15	—	—	4:15	—	—	4:15	—	—	4:15	—	—	4:15	—	—	4:15	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 106mm), heaviest during Wed morning. Very mild (max 12°C on Wed morning, min 6°C on Thu morning). Winds decreasing (strong winds from the SW on Wed morning, calm by Thu morning).

Mount Si Weather (Days 3-6):

Heavy rain (total 39mm), heaviest during Mon morning. Very mild (max 14°C on Sat morning, min 4°C on Mon night). Winds increasing (light winds from the SSW on Sat morning, strong winds from the SW by Mon afternoon).

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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 49 minutes ago	11° C	Light rain.	Calm (0 kph at 142).
Black Diamond 32 km SSW 192m alt. 42 minutes ago	24° C	Dry	Calm (3 kph at 46).
Renton Airport 36 km WSW 218m alt. 2 hours ago	14° C	-	Moderate winds from the S (20 kph at 180).	0.0 km
Auburn 39 km SW 119m alt. 2 hours ago	15° C	Dry	Calm (0 kph at 74).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	8° C	Moderate rain .	Light winds from the WSW (13 kph at 250).	1 km
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	14° C	Light rain .	Moderate winds from the S (22 kph at 180).	3 km Mid: broken High: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	13° C	-	Moderate winds from the S (24 kph at 180).	0.0 km
Snohomish 49 km NW 196m alt. 53 minutes ago	10° C	Light rain.	Calm (3 kph at 178).
Seattle 49 km WSW 100m alt. 45 minutes ago	17° C	-	Moderate winds from the WSW (21 kph at 256).
SHIP4140 51 km W 15m alt. 1 hour ago				- 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.