– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Sat 09 May Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Sat 09 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Warm (max 22°C on Tue morning, min 8°C on Sun night). Wind will be generally light.											Days 5–7 Weather Summary Some drizzle, heaviest during Fri morning. Warm (max 26°C on Tue afternoon, min 7°C on Thu night). Wind will be generally light.
	Sat 9		Sunday 10			Monday 11			Tuesday 12			Wednesday 13			Thursday 14
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	some clouds	some clouds	some clouds	rain shwrs	clear	clear	clear	some clouds	some clouds	some clouds	some clouds	cloudy	rain shwrs	some clouds	cloudy	rain shwrs
km/h	NW	SSE	WSW	W	N	NW	NW	ESE	ESE	NW	ESE	WNW	W	SSW	SW	WSW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	0.2	—	—	—	—	—	—	—	—	0.1	—	—	0.2
max °C	18	15	13	16	12	15	18	15	22	26	20	22	23	20	13	16	12
min °C	17	11	12	15	8	11	17	13	17	25	18	20	23	12	13	16	7
chill °C	17	11	12	15	8	11	17	13	17	25	18	20	23	11	12	16	6

Freezing level m	3450	3300	2850	2400	2500	3200	3450	3700	3950	3950	3950	3850	3700	3500	3200	2600	1550
Cloud base (m)	6450	6400	1850	1900	2050	6750	7150	8950	6850	8500	8700	5850	4950		5650	2000	1950

	—	—	5:35	—	—	5:35	—	—	5:33	—	—	5:31	—	—	5:31	—	—
	—	8:29	—	—	8:30	—	—	8:30	—	—	8:32	—	—	8:34	—	—	8:35

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 22°C on Tue morning, min 8°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Fri morning. Warm (max 26°C on Tue afternoon, min 7°C on Thu 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. 2 hours ago	17° C	Dry	Calm (0 kph at 328).
Renton 30 km WSW 160m alt. 52 minutes ago	19° C	Dry	Calm (0 kph at 323).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (3 kph at 0).
Grotto wx 35 km NE 321m alt. 43 minutes ago	18° C	Dry	Light winds from the W (10 kph at 261).
Renton Airport 36 km WSW 218m alt. 2 hours ago	18° C	Clear	Light winds from the N (9 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 2 hours ago	14° C	Dry	Calm (0 kph at 210).
Auburn 39 km SW 119m alt. 50 minutes ago	23° C	Dry	Calm (0 kph at 341).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	15° C	Clear	Calm (0 kph at 0).	16 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	18° C	Dry	Calm (3 kph at 204).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	18° C	Clear	Light winds from the N (7 kph at 1).	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.