– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 pm Tue 09 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Tue 09 Dec Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Heavy rain (total 114mm), heaviest during Wed morning. Mild temperatures (max 7°C on Tue night, min 3°C on Wed night). Winds decreasing (stormy winds from the SW on Wed morning, light winds from the WSW by Thu afternoon).										Days 5–7 Weather Summary Heavy rain (total 40mm), heaviest during Mon morning. Mild temperatures (max 9°C on Sat morning, min 3°C on Fri night). Winds increasing (light winds from the SW on Fri night, severe gales from the SSW by Mon afternoon).
		Wednesday 10			Thursday 11			Friday 12			Saturday 13			Sunday 14			Monday 15
	night	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	mod. rain	light rain	light rain	light rain	light rain	rain shwrs	clear	some clouds	rain shwrs	light rain	rain shwrs	mod. rain	heavy rain	mod. rain	rain shwrs
km/h	SW	SW	SW	WSW	SW	WSW	WSW	WSW	WSW	WSW	SW	SW	SW	SW	SW	SSW	SSW	SW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	30	26	21	24	10	1.1	1.2	0.5	0.8	0.6	—	—	1.3	3	1.3	6	19	9	4
max°C	7	7	7	7	3	4	5	6	5	5	9	9	8	4	5	7	6	6	4
min°C	6	7	7	3	3	3	5	5	5	3	7	8	4	4	5	6	5	6	-2
chill°C	0	0	0	-1	-2	-1	0	0	0	0	3	4	-2	-1	-1	1	-2	0	-10

Freezing level (m)	2950	2900	3000	2500	1950	2150	2550	3000	3100	3300	3150	2850	2550	2100	2200	2600	2500	2500	1250
Cloud base (m)	400	400	400	400	450	450	450	450	750	700	9050	8100		700	450	2050	400	400	450

	—	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 114mm), heaviest during Wed morning. Mild temperatures (max 7°C on Tue night, min 3°C on Wed night). Winds decreasing (stormy winds from the SW on Wed morning, light winds from the WSW by Thu afternoon).

Mount Si Weather (Days 3-6):

Heavy rain (total 40mm), heaviest during Mon morning. Mild temperatures (max 9°C on Sat morning, min 3°C on Fri night). Winds increasing (light winds from the SW on Fri night, severe gales from the SSW by Mon afternoon).

This table gives the weather forecast for Mount Si at the specific elevation of 1270 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. 1 hour ago	11° C	Light rain.	Calm (0 kph at 87).
Black Diamond 32 km SSW 192m alt. 49 minutes ago	6° C	Dry	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	13° C	Light rain .	Moderate winds from the S (20 kph at 180).	16 km Low: broken Mid: overcast
Auburn 39 km SW 119m alt. 1 hour ago	-2° C	-	Calm (0 kph at 138).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	6° C	Moderate rain .	Calm (0 kph at 0).	1 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	13° C	Light rain .	Moderate winds from the S (20 kph at 190).	13 km Low: broken Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	12° C	Light rain .	Fresh winds from the S (31 kph at 190).	13 km Low: broken Mid: overcast
Snohomish 49 km NW 196m alt. 31 minutes ago	7° C	Dry	Calm (2 kph at 321).
Seattle 49 km WSW 100m alt. 59 minutes ago	4° C	-
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	13° C		Strong winds from the SSW (50 kph at 200).

* 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.