– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Sun 22 Mar Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Sun 22 Mar Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Heavy rain (total 28mm), heaviest during Tue afternoon. Later becoming colder with a dusting of snow on Tue night. Mild temperatures (max 9°C on Mon afternoon, min 1°C on Tue night). Wind will be generally light.									Days 4–6 Weather Summary A dusting of snow turning to light rain (total 6mm) on Wed afternoon. Freeze-thaw conditions (max 11°C on Fri afternoon, min -1°C on Wed night). Wind will be generally light.
	Sunday 22			Monday 23			Tuesday 24			Wednesday 25			Thursday 26			Friday 27
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	some clouds	clear	some clouds	light rain	mod. rain	heavy rain	light snow	light snow	rain shwrs	some clouds	light snow	rain shwrs	clear	clear	clear	clear
km/h	WSW	WNW	NE	W	NW	SSW	S	SSW	SW	WSW	SW	SW	WSW	SW	E	ESE	ESE	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	1	3	—	—	1	—	—	—	—	—
mm	—	—	—	—	—	0.1	6	14	8	—	4	—	0.7	1	—	—	—	—
max °C	5	8	4	7	9	6	5	7	7	2	3	1	2	5	1	8	11	6
min °C	2	8	3	3	9	6	4	7	1	1	2	-1	1	4	-1	2	10	5
chill °C	2	7	3	3	8	6	1	5	-4	-4	-3	-4	-2	3	-4	-1	9	3

Freezing level m	1100	1350	1950	1900	1850	1850	1950	2100	1000	700	850	450	800	1100	0	2000	2550	3050
Cloud base (m)	650	800	650	550	750	3000	800	400	400	450	500	550	500	650	450	6800

	7:05	—	—	7:03	—	—	7:01	—	—	7:00	—	—	6:58	—	—	6:56	—	—
	—	7:22	—	—	7:22	—	—	7:23	—	—	7:25	—	—	7:27	—	—	7:29	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 28mm), heaviest during Tue afternoon. Later becoming colder with a dusting of snow on Tue night. Mild temperatures (max 9°C on Mon afternoon, min 1°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

A dusting of snow turning to light rain (total 6mm) on Wed afternoon. Freeze-thaw conditions (max 11°C on Fri afternoon, min -1°C on Wed 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. 59 minutes ago	9° C	Dry	Calm (0 kph at 350).
Black Diamond 32 km SSW 192m alt. 58 minutes ago		-	Calm (5 kph at 242).
Renton Airport 36 km WSW 218m alt. 2 hours ago	9° C	Dry and partly cloudy.	Light winds from the N (15 kph at 0).	16 km Low: scattered
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (2 kph at 212).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	9° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: scattered
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	8° C	Dry and partly cloudy.	Light winds from the WNW (11 kph at 290).	16 km Low: scattered Mid: scattered High: broken
Snohomish 49 km NW 196m alt. 38 minutes ago	9° C	Dry	Calm (2 kph at 207).
Seattle 49 km WSW 100m alt. 35 minutes ago	21° C	-	Wind obs. (19 kph from 222 degs) was rejected.
SHIP5095 54 km SSW 15m alt. 3 hours ago				- km
SHIP8038 54 km SSW 15m alt. 3 hours 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.