– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Thu 28 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Thu 28 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Light rain (total 6mm), mostly falling on Fri morning. Warm (max 23°C on Thu afternoon, min 4°C on Sat night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 25°C on Tue afternoon, min 8°C on Sun morning). Wind will be generally light.
	Thursday 28			Friday 29			Saturday 30			Sunday 31			Monday 1			Tuesday 2
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	light rain	light rain	light rain	rain shwrs	rain shwrs	some clouds	clear	clear	clear	some clouds	some clouds	clear	clear	clear	clear	some clouds
km/h	W	NW	W	SW	W	WNW	NW	NNW	NNE	NW	NW	NE	NW	NW	ESE	SW	WNW	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	0.1	4	1.2	0.3	0.1	—	—	—	—	—	—	—	—	—	—	—
max °C	21	23	19	8	9	8	9	12	10	11	14	12	16	20	18	22	25	22
min °C	18	23	10	7	7	5	6	10	4	8	13	8	12	19	13	18	25	14
chill °C	18	23	10	5	6	5	5	9	4	7	12	8	12	19	13	18	25	14

Freezing level m	3900	3950	3500	2250	1950	1450	1450	2150	2250	2250	3150	3300	3200	3450	3400	3550	3550	3250
Cloud base (m)	9550	9400		450	600	800	750	950	9100	8500	8450			7150	9350			2850

	5:16	—	—	5:16	—	—	5:15	—	—	5:13	—	—	5:13	—	—	5:13	—	—
	—	—	8:52	—	—	8:52	—	—	8:53	—	—	8:54	—	—	8:55	—	—	8:57

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 6mm), mostly falling on Fri morning. Warm (max 23°C on Thu afternoon, min 4°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 25°C on Tue afternoon, min 8°C on Sun morning). 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. 46 minutes ago	24° C	Dry	Calm (0 kph at 315).
Snoqualmie Pass 30 km ESE 824m alt. 40 minutes ago	27° C	-	Calm (0 kph at 201).
Renton 30 km WSW 160m alt. 46 minutes ago	23° C	Dry	Calm (3 kph at 110).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (5 kph at 148).
Grotto wx 35 km NE 321m alt. 1 hour ago	22° C	Dry	Light winds from the W (14 kph at 262).
Renton Airport 36 km WSW 218m alt. 2 hours ago	22° C	Clear	Light winds from the N (6 kph at 1).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	23° C	Dry	Calm (2 kph at 101).
Auburn 39 km SW 119m alt. 40 minutes ago	29° C	Dry	Calm (0 kph at 237).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	19° C	Clear	Wind obs. (7 kph from 1 degs) was rejected.	16 km
Woodinville 43 km WNW 137.2m alt. 43 minutes ago	28° C	Dry	Light winds from the WNW (6 kph at 302).

* 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.