– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sun 03 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sun 03 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Very mild (max 17°C on Sun night, min 9°C on Wed morning). Wind will be generally light.										Days 5–7 Weather Summary Light rain (total 3mm), mostly falling on Fri night. Mild temperatures (max 8°C on Wed night, min 4°C on Fri morning). Wind will be generally light.
		Monday 4			Tuesday 5			Wednesday 6			Thursday 7			Friday 8			Saturday 9
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	light rain	light rain	rain shwrs	rain shwrs	clear
km/h	NNW	NW	WNW	NNW	NW	WNW	WSW	SW	WSW	SW	W	WSW	SW	SW	WSW	WNW	NNW	NNW	NNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.2	1.5	0.9	0.5	—
max °C	17	14	15	14	12	14	12	9	10	8	6	8	8	5	5	4	4	7	7
min °C	15	14	14	11	11	13	10	9	10	5	6	8	6	4	4	4	4	6	7
chill °C	15	14	14	10	11	13	8	7	8	3	6	7	2	0	-1	-1	3	4	7

Freezing level m	3500	3450	3500	3600	3550	3500	3650	3450	3250	3100	3250	3300	3250	1950	1900	2050	3250	3500	3450
Cloud base (m)		9400	9400							2200		6900	6150	5250	950	450	600	700

	—	5:45	—	—	5:43	—	—	5:41	—	—	5:41	—	—	5:39	—	—	5:37	—	—
	—	—	—	8:22	—	—	8:22	—	—	8:24	—	—	8:25	—	—	8:27	—	—	8:29

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 17°C on Sun night, min 9°C on Wed morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 3mm), mostly falling on Fri night. Mild temperatures (max 8°C on Wed night, min 4°C on Fri morning). 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. 51 minutes ago	12° C	Dry	Calm (0 kph at 336).
Renton 30 km WSW 160m alt. 2 hours ago	15° C	Dry	Calm (0 kph at 49).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 3 hours ago	16° C	Clear	Calm (0 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 2 hours ago	9° C	Dry	Calm (0 kph at 5).
Auburn 39 km SW 119m alt. 2 hours ago	12° C	Dry	Calm (0 kph at 263).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	13° C	Clear	Wind obs. (7 kph from 230 degs) was rejected.	16 km
Woodinville 43 km WNW 137.2m alt. 2 hours ago	9° C	Dry	Calm (2 kph at 285).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	16° C	Clear	Calm (0 kph at 0).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	19° C	-	Calm (0 kph at 0).	16 km Low: few

* 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.