– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Thu 30 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Thu 30 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 2mm), mostly falling on Sat afternoon. Warm (max 22°C on Sun afternoon, min 11°C on Fri night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 23°C on Mon afternoon, min 12°C on Mon night). Wind will be generally light.
		Friday 1			Saturday 2			Sunday 3			Monday 4			Tuesday 5			Wednesday 6
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	some clouds	rain shwrs	light rain	rain shwrs	risk tstorm	clear	cloudy	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear
km/h	ESE	WNW	WNW	ENE	N	N	E	NNW	NNW	ESE	WNW	NW	NW	NW	NW	ENE	W	W	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	1.2	0.1	0.6	0.3	—	—	—	—	—	—	—	—	—	—	—	—
max °C	16	17	18	15	16	20	17	21	22	19	21	23	19	17	20	18	17	20	17
min °C	12	15	18	11	12	19	14	18	22	16	19	23	12	14	19	12	14	19	10
chill °C	12	15	18	11	12	19	14	18	22	16	19	23	12	14	19	12	14	19	10

Freezing level m	2900	2850	2950	3000	2950	3050	3200	3200	3400	3400	3350	3500	3750	3700	3750	3900	3750	3700	3650
Cloud base (m)			3050	3300	2050	2300		9350	6900

	—	5:50	—	—	5:48	—	—	5:47	—	—	5:45	—	—	5:43	—	—	5:41	—	—
	—	—	—	8:17	—	—	8:19	—	—	8:21	—	—	8:22	—	—	8:22	—	—	8:24

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 2mm), mostly falling on Sat afternoon. Warm (max 22°C on Sun afternoon, min 11°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 23°C on Mon afternoon, min 12°C on Mon 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. 36 minutes ago	12° C	Dry	Calm (0 kph at 328).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	4° C	-	Calm (0 kph at 91).
Renton 30 km WSW 160m alt. 1 hour ago	13° C	Dry	Calm (0 kph at 30).
Black Diamond 32 km SSW 192m alt. 52 minutes ago		-	Calm (2 kph at 0).
Grotto wx 35 km NE 321m alt. 1 hour ago	13° C	Dry	Light winds from the ENE (6 kph at 58).
Renton Airport 36 km WSW 218m alt. 2 hours ago	15° C	-	Light winds from the N (9 kph at 350).	16 km Low: few
Grotto wx 39 km NE 1101m alt. 36 minutes ago	6° C	Dry	Calm (0 kph at 5).
Auburn 39 km SW 119m alt. 1 hour ago	11° C	Dry	Calm (3 kph at 139).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	9° C	Clear	Calm (0 kph at 0).	16 km
Woodinville 43 km WNW 137.2m alt. 56 minutes ago	3° C	Dry	Calm (0 kph at 269).

* 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.