– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Fri 17 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Fri 17 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Very mild (max 19°C on Sun afternoon, min 3°C on Fri morning). Wind will be generally light.									Days 4–6 Weather Summary Light rain (total 8mm), mostly falling on Wed morning. Warm (max 20°C on Mon afternoon, min 4°C on Wed night). Wind will be generally light.
	Friday 17			Saturday 18			Sunday 19			Monday 20			Tuesday 21			Wednesday 22
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	some clouds	cloudy	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	light rain	light rain	light rain	light rain	light rain
km/h	NNW	NNW	ESE	ESE	ENE	ESE	ESE	ESE	E	SE	WNW	ENE	N	WSW	SW	SW	SW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.3	—	—	—	—	—	—	—	—	—	—	—	—	0.6	0.6	2	1.7	3
max °C	6	9	7	12	16	12	17	19	15	19	20	16	19	20	13	8	8	7
min °C	3	8	6	8	15	10	12	19	12	15	19	13	15	16	8	8	8	4
chill °C	3	8	5	7	15	9	11	19	12	15	19	13	15	16	6	6	5	3

Freezing level m	1150	1550	2250	2400	2650	2800	3000	3000	3200	3250	3250	3350	3350	3200	2850	2000	1850	1150
Cloud base (m)	500	850	5400		5750		3400	3350	5000	5000	5250	5000	5300		500	400	400	400

	6:15	—	—	6:13	—	—	6:11	—	—	6:09	—	—	6:07	—	—	6:05	—	—
	—	7:58	—	—	—	8:00	—	—	8:00	—	—	8:02	—	—	8:04	—	—	8:05

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 19°C on Sun afternoon, min 3°C on Fri morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 8mm), mostly falling on Wed morning. Warm (max 20°C on Mon afternoon, min 4°C on Wed 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	13° C	Dry	Calm (2 kph at 190).
Snoqualmie Pass 30 km ESE 824m alt. 55 minutes ago	9° C	-	Calm (0 kph at 236).
Renton 30 km WSW 160m alt. 1 hour ago	13° C	Dry	Calm (2 kph at 122).
Grotto wx 35 km NE 321m alt. 2 hours ago	11° C	Dry	Wind obs. (6 kph from 238 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	12° C	Dry and partly cloudy.	Light winds from the NNW (13 kph at 330).	16 km Low: scattered
Grotto wx 39 km NE 1101m alt. 3 hours ago	3° C	Dry	Calm (0 kph at 155).
Auburn 39 km SW 119m alt. 1 hour ago	24° C	Dry	Wind obs. (8 kph from 265 degs) was rejected.
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3° C	-	Calm (0 kph at 0).	16 km
Woodinville 43 km WNW 137.2m alt. 2 hours ago	11° C	Dry	Wind obs. (6 kph from 102 degs) was rejected.
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	12° C	Dry and partly cloudy.	Light winds from the N (9 kph at 350).	16 km Low: scattered

* 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.