– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sat 14 Mar Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sat 14 Mar Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Heavy rain (total 30mm), heaviest during Tue afternoon. Freeze-thaw conditions (max 12°C on Mon afternoon, min -1°C on Sat night). Wind will be generally light.										Days 5–7 Weather Summary Heavy rain (total 74mm), heaviest during Tue night. Very mild (max 10°C on Tue night, min 8°C on Fri afternoon). Wind will be generally light.
		Sunday 15			Monday 16			Tuesday 17			Wednesday 18			Thursday 19			Friday 20
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	some clouds	light rain	light rain	mod. rain	rain shwrs	rain shwrs	light rain	mod. rain	heavy rain	mod. rain	light rain	light rain	mod. rain	mod. rain	heavy rain	heavy rain	light rain	light rain
km/h	E	S	S	SSW	SSW	SW	SSW	SSW	SSW	SSW	SSW	SSW	S	SSW	SSW	SW	WSW	WSW	W
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	2	5	7	5	0.2	1.7	9	13	6	4	4	6	7	18	12	4	3
max °C	0	5	5	8	8	12	9	9	9	10	9	10	10	10	10	10	9	9	7
min °C	-1	1	3	4	8	12	9	8	9	9	9	10	9	10	10	9	9	8	1
chill °C	-1	1	1	2	6	10	8	6	8	7	7	8	7	8	8	8	7	6	-2

Freezing level m	300	1200	1000	2300	3200	3050	2900	2650	2750	2750	2700	2900	2850	2800	2850	2750	2250	2000	900
Cloud base (m)	850	2600	800	500	450	450	2650	700	450	550	450	550	500	450	400	400	400	400	450

	—	7:20	—	—	7:18	—	—	7:16	—	—	7:13	—	—	7:11	—	—	7:09	—	—
	—	—	7:12	—	—	7:13	—	—	7:14	—	—	7:15	—	—	7:16	—	—	7:19	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 30mm), heaviest during Tue afternoon. Freeze-thaw conditions (max 12°C on Mon afternoon, min -1°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 74mm), heaviest during Tue night. Very mild (max 10°C on Tue night, min 8°C on Fri afternoon). 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. 51 minutes ago	1° C	-	Calm (0 kph at 23).
Snoqualmie Pass 30 km ESE 824m alt. 38 minutes ago	-4° C	-	Calm (0 kph at 358).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (0 kph at 0).
Grotto wx 35 km NE 321m alt. 1 hour ago	-1° C	-	Calm (3 kph at 61).
Renton Airport 36 km WSW 218m alt. 2 hours ago	2° C	Clear	Calm (0 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	-6° C	-	Calm (0 kph at 300).
Auburn 39 km SW 119m alt. 2 hours ago	13° C	Dry	Calm (0 kph at 263).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-6° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: broken
Woodinville 43 km WNW 137.2m alt. 2 hours ago	-5° C	-	Calm (0 kph at 269).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	3° C	Clear	Calm (0 kph at 0).	16 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.