– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Wed 15 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Wed 15 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 7mm), mostly falling on Thu night. Very mild (max 18°C on Wed afternoon, min 3°C on Thu night). Wind will be generally light.									Days 4–6 Weather Summary Heavy rain (total 25mm), heaviest during Mon night. Very mild (max 11°C on Mon afternoon, min 4°C on Sat night). Wind will be generally light.
	Wednesday 15			Thursday 16			Friday 17			Saturday 18			Sunday 19			Monday 20
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	some clouds	light rain	light rain	light rain	rain shwrs	light rain	rain shwrs	light rain	light rain	heavy rain	light rain	light rain	rain shwrs	rain shwrs	light rain	heavy rain
km/h	NW	NW	W	SW	WSW	SW	WSW	SW	SSW	SW	WSW	W	W	W	NNW	WNW	WSW	SW
Wave Height Map See all maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	0.2	0.3	4	1.1	1.2	0.1	0.4	2	10	1.1	0.6	0.4	0.1	0.2	10
max°C	16	18	16	9	11	9	5	9	9	6	6	4	5	9	8	9	11	9
min°C	13	18	10	9	11	3	4	8	5	5	6	4	4	9	5	7	11	8
chill°C	13	18	9	8	9	-2	0	7	3	2	3	2	3	8	5	6	10	6

Freezing level (m)	3450	3350	3350	2500	2350	1150	1250	1700	1350	1250	1400	1250	1300	1600	1600	1550	1950	1950
Cloud base (m)	8200		750	400	450	500	450	700	750	550	500	450	450	700	1550	800	900	400

	5:28	—	—	5:26	—	—	5:26	—	—	5:24	—	—	5:24	—	—	5:22	—	—
	—	—	8:37	—	—	8:38	—	—	8:39	—	—	8:42	—	—	8:43	—	—	8:44

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 7mm), mostly falling on Thu night. Very mild (max 18°C on Wed afternoon, min 3°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 25mm), heaviest during Mon night. Very mild (max 11°C on Mon afternoon, min 4°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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Snoqualmie Pass 30 km ESE 824m alt. 42 minutes ago	21° C	-	Calm (0 kph at 199).
Renton Airport 36 km WSW 218m alt. 2 hours ago	16° C	Clear	Light winds from the N (7 kph at 0).	13 km
Auburn 39 km SW 119m alt. 1 hour ago	25° C	Dry	Calm (0 kph at 56).
Grotto wx 39 km NE 1101m alt. 2 hours ago	14° C	Dry	Calm (2 kph at 83).
Woodinville 43 km WNW 137.2m alt. 2 hours ago	17° C	Dry	Light winds from the NW (10 kph at 309).

* 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.