– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Sat 25 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Sat 25 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 5mm), mostly falling on Sun night. Very mild (max 14°C on Sun afternoon, min 6°C on Sat night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Very mild (max 16°C on Thu afternoon, min 6°C on Tue night). Wind will be generally light.
	Sat 25		Sunday 26			Monday 27			Tuesday 28			Wednesday 29			Thursday 30
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	clear	some clouds	some clouds	rain shwrs	rain shwrs	rain shwrs	light rain	cloudy	rain shwrs	rain shwrs	clear	clear	some clouds	some clouds	rain shwrs	clear
km/h	NNW	E	NW	WNW	S	SW	WSW	SW	SW	WNW	NNW	NW	NW	ESE	SW	WSW	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	4	0.1	0.2	0.4	—	0.1	0.2	—	—	—	—	0.1	—
max °C	12	9	12	14	9	7	9	7	7	9	8	12	15	12	14	16	12
min °C	12	6	9	13	6	6	9	6	6	7	6	8	15	10	11	15	6
chill °C	11	6	9	12	5	5	8	5	5	7	6	8	15	10	11	15	5

Freezing level m	1850	1850	1850	2050	1850	1450	1600	1450	1400	1600	1650	2150	2750	2700	2600	2500	1950
Cloud base (m)	2150		2850	2650	2250	550	750	800	500	550	850	950	2050		2700	1800	2750

	—	—	5:58	—	—	5:56	—	—	5:54	—	—	5:52	—	—	5:52	—	—
	—	8:09	—	—	8:10	—	—	8:12	—	—	8:14	—	—	8:15	—	—	8:16

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 5mm), mostly falling on Sun night. Very mild (max 14°C on Sun afternoon, min 6°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 16°C on Thu afternoon, min 6°C on Tue 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. 1 hour ago	16° C	Dry	Calm (0 kph at 310).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	12° C	-	Calm (2 kph at 340).
Renton 30 km WSW 160m alt. 57 minutes ago	17° C	Dry	Wind obs. (6 kph from 304 degs) was rejected.
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (2 kph at 0).
Grotto wx 35 km NE 321m alt. 1 hour ago	18° C	Dry	Light winds from the WSW (10 kph at 245).
Renton Airport 36 km WSW 218m alt. 3 hours ago	18° C	Clear	Light winds from the NNW (17 kph at 330).	16 km
Grotto wx 39 km NE 1101m alt. 45 minutes ago	7° C	Dry	Calm (0 kph at 105).
Auburn 39 km SW 119m alt. 1 hour ago	19° C	Dry	Calm (3 kph at 319).
SHIP5006 42 km WSW 3m alt. 2 hours ago	17° C		Moderate winds from the N (22 kph at 0).
SHIP3135 42 km WSW 15m alt. 3 hours ago			Moderate winds from the N (21 kph at 0).	- 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.