– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Sun 15 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Sun 15 Jun Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Warm (max 20°C on Tue afternoon, min 9°C on Mon night). Wind will be generally light.									Days 4–6 Weather Summary Moderate rain (total 11mm), heaviest on Fri afternoon. Very mild (max 19°C on Wed afternoon, min 8°C on Thu night). Wind will be generally light.
	Sunday 15			Monday 16			Tuesday 17			Wednesday 18			Thursday 19			Friday 20
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	some clouds	some clouds	some clouds	clear	some clouds	some clouds	some clouds	rain shwrs	rain shwrs	some clouds	some clouds	some clouds	rain shwrs	rain shwrs	rain shwrs	light rain
km/h	NW	NW	ESE	WNW	WNW	ESE	WSW	W	S	WSW	W	SE	W	WSW	SW	SW	SW	W
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	0.6	0.2	—	—	—	0.5	2	3	4
max°C	14	19	16	16	19	17	15	20	17	14	19	15	14	16	13	9	10	9
min°C	10	18	10	13	18	9	12	17	11	12	17	9	11	15	8	8	10	8
chill°C	10	18	10	13	18	9	12	17	11	12	17	9	11	14	6	6	8	7

Freezing level (m)	3150	3500	3500	3300	3250	3300	3250	3200	2850	2750	3100	3500	3250	2850	1950	1700	1950	1800
Cloud base (m)			8250	6900	6300			5150	2300	550	1950		7750	2000	1650	800	850	500

	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—
	—	—	9:05	—	—	9:06	—	—	9:06	—	—	9:07	—	—	9:07	—	—	9:07

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 20°C on Tue afternoon, min 9°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 11mm), heaviest on Fri afternoon. Very mild (max 19°C on Wed afternoon, min 8°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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 54 minutes ago	16° C	Dry	Calm (0 kph at 61).
Black Diamond 32 km SSW 192m alt. 22 minutes ago		-	Calm (2 kph at 102).
Renton Airport 36 km WSW 218m alt. 2 hours ago	13° C	Dry and partly cloudy.	Light winds from the N (6 kph at 1).	16 km Low: scattered Mid: broken
Auburn 39 km SW 119m alt. 2 hours ago		-	Calm (0 kph at 117).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	6° C	Dry and partly cloudy.	Wind obs. (7 kph from 240 degs) was rejected.	16 km Low: scattered
SHIP1645 43 km W -m alt. 1 hour ago	15° C	No report.	Light winds from the W (7 kph at 270).
SHIP11229 43 km W 3m alt. 3 hours ago	13° C		Light winds from the NE (11 kph at 50).
SHIP5625 43 km W 15m alt. 2 hours ago			Light winds from the E (12 kph at 80).	- km
SHIP8151 43 km W 15m alt. 3 hours ago	11° C			43.5 km
SHIP5536 43 km W 15m alt. 2 hours ago	9° C		Calm (6 kph at 170).	17.7 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.