– Lat/Long: 47.51° N 121.74° W

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

Issued: 10 am Thu 30 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Light rain (total 3mm), mostly falling on Fri night. Warm (max 20°C on Thu afternoon, min 11°C on Fri night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 23°C on Sun afternoon, min 11°C on Tue night). Wind will be generally light.
	Thursday 30			Friday 1			Saturday 2			Sunday 3			Monday 4			Tuesday 5
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	clear	clear	rain shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	clear
km/h	ESE	NW	ESE	WNW	NW	SSE	N	N	E	NW	NNW	ESE	WNW	NW	NW	NW	NW	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	0.1	3	0.1	0.1	0.1	—	—	—	—	—	—	—	—	—
max °C	19	20	16	17	18	13	16	20	17	21	23	19	22	23	19	17	20	18
min °C	14	19	12	14	17	11	12	19	15	18	23	17	20	23	12	14	20	11
chill °C	14	19	12	14	17	11	12	19	15	18	23	17	20	23	12	14	20	11

Freezing level m	2800	2850	2800	2800	2950	3000	2850	3150	3250	3250	3450	3400	3350	3450	3700	3700	3650	3700
Cloud base (m)	9200			8450	2900	3250	2600	2300	5100		9100	3500		8950	9200

	5:52	—	—	5:50	—	—	5:48	—	—	5:47	—	—	5:45	—	—	5:43	—	—
	—	—	8:16	—	—	8:17	—	—	8:19	—	—	8:21	—	—	8:22	—	—	8:22

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 3mm), mostly falling on Fri night. Warm (max 20°C on Thu 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 Sun afternoon, min 11°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. 2 hours ago	21° C	Dry	Calm (2 kph at 30).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	19° C	-	Calm (0 kph at 229).
Renton 30 km WSW 160m alt. 2 hours ago	18° C	Dry	Calm (5 kph at 245).
Black Diamond 32 km SSW 192m alt. 44 minutes ago		-	Wind obs. (6 kph from 360 degs) was rejected.
Grotto wx 35 km NE 321m alt. 2 hours ago	22° C	Dry	Light winds from the ESE (6 kph at 106).
Renton Airport 36 km WSW 218m alt. 2 hours ago	17° C	Clear	Light winds from the NNW (13 kph at 340).	16 km
Grotto wx 39 km NE 1101m alt. 47 minutes ago	18° C	Dry	Calm (3 kph at 232).
Auburn 39 km SW 119m alt. 50 minutes ago	26° C	Dry	Calm (3 kph at 71).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	13° C	Clear	Wind obs. (6 kph from 1 degs) was rejected.	16 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	18° C	Dry	Wind obs. (11 kph from 122 degs) was rejected.

* 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.