– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Fri 19 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Fri 19 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Moderate rain (total 15mm), heaviest on Sat night. Very mild (max 16°C on Sat afternoon, min 2°C on Sun night). Wind will be generally light.									Days 4–6 Weather Summary Light rain (total 2mm), mostly falling on Tue night. Very mild (max 17°C on Tue afternoon, min 5°C on Mon morning). Wind will be generally light.
	Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	some clouds	rain shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	some clouds	some clouds	some clouds	cloudy	cloudy	rain shwrs	light rain	light rain	light rain
km/h	ESE	ESE	ESE	SE	SW	WSW	WSW	NNW	NE	NNE	NNW	ESE	SE	WSW	SW	SW	W	WSW
Wave Height Map See all maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	4	9	0.9	0.4	0.1	—	—	—	—	—	0.9	0.7	0.4	0.2
max°C	11	14	10	14	16	5	4	9	5	9	14	10	15	17	12	5	9	7
min°C	7	13	5	9	6	3	3	7	2	5	13	8	10	16	5	5	7	5
chill°C	5	12	2	7	4	-1	0	6	2	5	13	6	8	16	3	4	6	5

Freezing level (m)	1750	2000	2150	2300	1400	900	1050	1450	1050	1600	2450	2700	2650	2450	1250	1200	1600	1350
Cloud base (m)		2850	8650		1600	550	600	850	1750		7000	6150	6150	2650	450	450	850	850

	6:09	—	—	6:07	—	—	6:05	—	—	6:03	—	—	6:01	—	—	6:00	—	—
	—	—	8:02	—	—	8:04	—	—	8:05	—	—	8:07	—	—	8:07	—	—	8:09

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 15mm), heaviest on Sat night. Very mild (max 16°C on Sat afternoon, min 2°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 2mm), mostly falling on Tue night. Very mild (max 17°C on Tue afternoon, min 5°C on Mon 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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Snoqualmie Pass 30 km ESE 824m alt. 48 minutes ago	-1° C	-	Calm (0 kph at 59).
Renton Airport 36 km WSW 218m alt. 2 hours ago	8° C	Clear	Light winds from the N (7 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	5° C	Dry	Calm (2 kph at 332).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	1° C	Clear	Light winds from the ESE (6 kph at 110).	16 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	6° C	Dry	Calm (2 kph at 238).

* 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.