– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Sat 18 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Sat 18 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 14°C on Sun afternoon, min 5°C on Sat morning). Wind will be generally light.									Days 4–6 Weather Summary Light rain (total 3mm), mostly falling on Wed morning. Mild temperatures (max 9°C on Tue morning, min 1°C on Wed night). Wind will be generally light.
	Saturday 18			Sunday 19			Monday 20			Tuesday 21			Wednesday 22			Thursday 23
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	clear	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	light rain	light rain	light rain	light rain	light rain	some clouds	some clouds	clear
km/h	SE	ESE	ESE	ESE	SE	ENE	ESE	W	NW	N	W	NW	W	SW	WSW	NW	NNW	NNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	0.1	1	0.7	0.7	0.9	—	—	—
max °C	6	10	10	12	14	12	13	14	13	9	8	6	4	4	3	2	6	6
min °C	5	8	9	11	13	11	13	13	9	8	7	4	3	3	1	2	4	5
chill °C	3	6	8	9	12	11	13	13	8	8	5	2	-1	-2	-3	0	3	4

Freezing level m	2350	2650	2850	3000	3000	3150	3200	3150	3150	3200	3050	2950	2100	1950	1550	1500	2300	2650
Cloud base (m)		3150	8250	5000	3450	6050	4050			650	1450	400	400	400	550	850	7000

	6:13	—	—	6:11	—	—	6:09	—	—	6:07	—	—	6:05	—	—	6:03	—	—
	—	—	8:00	—	—	8:00	—	—	8:02	—	—	8:04	—	—	8:05	—	—	8:07

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 14°C on Sun afternoon, min 5°C on Sat morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 3mm), mostly falling on Wed morning. Mild temperatures (max 9°C on Tue morning, min 1°C on Wed night). Wind will be generally light.

This table gives the weather forecast for Mount Si at the specific elevation of 1270 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. 39 minutes ago	3° C	Dry	Calm (0 kph at 345).
Snoqualmie Pass 30 km ESE 824m alt. 53 minutes ago	-1° C	-	Calm (0 kph at 340).
Renton 30 km WSW 160m alt. 2 hours ago	4° C	Dry	Calm (0 kph at 66).
Grotto wx 35 km NE 321m alt. 2 hours ago	4° C	Dry	Calm (5 kph at 71).
Renton Airport 36 km WSW 218m alt. 2 hours ago	7° C	Clear	Calm (0 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 2 hours ago	1° C	-	Calm (0 kph at 11).
Auburn 39 km SW 119m alt. 2 hours ago	3° C	Dry	Calm (0 kph at 69).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-1° C	Clear	Calm (0 kph at 0).	16 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	0° C	-	Calm (0 kph at 167).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	8° C	Clear	Calm (0 kph at 0).	16 km

* 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.