– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Tue 19 May Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Tue 19 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Some drizzle, heaviest during Tue afternoon. Warm (max 20°C on Thu afternoon, min 7°C on Tue night). Wind will be generally light.											Days 5–7 Weather Summary Light rain (total 4mm), mostly falling on Mon morning. Very mild (max 19°C on Fri afternoon, min 8°C on Sat night). Wind will be generally light.
	Tue 19		Wednesday 20			Thursday 21			Friday 22			Saturday 23			Sunday 24
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	rain shwrs	some clouds	some clouds	clear	some clouds	clear	clear	clear	some clouds	clear	clear	some clouds	some clouds	some clouds	light rain
km/h	NW	NNE	NW	NW	E	WNW	WNW	ENE	WNW	WNW	SSE	W	WNW	SSW	SW	WSW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.5	0.4	0.1	—	—	—	—	—	—	—	—	—	—	—	—	—	0.7
max °C	12	11	12	16	13	17	20	16	16	19	17	15	18	16	14	18	12
min °C	12	7	9	14	10	14	19	11	13	18	11	12	17	8	11	17	9
chill °C	12	7	9	14	10	14	19	11	13	18	11	12	17	8	10	17	9

Freezing level m	2200	2700	2500	3000	3100	2950	3150	3100	3200	3450	3500	3200	3300	3300	3050	2950	2400
Cloud base (m)	800	1600	850	1600	6950	8500	5550	8700	9250	9400				9100	5750	4000	2800

	—	—	5:24	—	—	5:22	—	—	5:22	—	—	5:20	—	—	5:20	—	—
	—	8:42	—	—	8:43	—	—	8:44	—	—	8:45	—	—	8:45	—	—	8:46

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Tue afternoon. Warm (max 20°C on Thu afternoon, min 7°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 4mm), mostly falling on Mon morning. Very mild (max 19°C on Fri afternoon, min 8°C on Sat 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	15° C	Dry	Calm (0 kph at 323).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	11° C	-	Calm (5 kph at 172).
Renton 30 km WSW 160m alt. 45 minutes ago	16° C	Dry	Calm (0 kph at 3).
Black Diamond 32 km SSW 192m alt. 49 minutes ago		-	Calm (5 kph at 268).
Grotto wx 35 km NE 321m alt. 30 minutes ago	13° C	Dry	Calm (5 kph at 253).
Renton Airport 36 km WSW 218m alt. 2 hours ago	18° C	Dry and cloudy.	Light winds from the NNW (6 kph at 340).	16 km Low: overcast
Grotto wx 39 km NE 1101m alt. 1 hour ago	7° C	Dry	Calm (0 kph at 57).
Auburn 39 km SW 119m alt. 44 minutes ago		-	Calm (0 kph at 213).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	7° C	Dry and cloudy.	Light winds from the W (6 kph at 280).	16 km Low: few Mid: scattered High: overcast
Woodinville 43 km WNW 137.2m alt. 2 hours ago	14° C	Dry	Light winds from the WNW (14 kph at 288).

* 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.