– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Fri 08 May Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Fri 08 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 18°C on Sat afternoon, min 8°C on Fri night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Warm (max 25°C on Wed afternoon, min 12°C on Mon night). Wind will be generally light.
	Fri 8		Saturday 9			Sunday 10			Monday 11			Tuesday 12			Wednesday 13
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	clear	cloudy	some clouds	cloudy	rain shwrs	rain shwrs	some clouds	some clouds	clear	clear	clear	clear	cloudy	clear	clear
km/h	W	S	NW	NW	SE	W	WSW	WNW	NNW	NW	ESE	ENE	NW	SSE	W	WNW	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	0.1	0.2	—	—	—	—	—	—	—	—	—
max °C	13	11	14	18	15	14	16	11	13	17	14	21	24	19	23	25	22
min °C	12	8	11	16	11	12	14	9	10	17	12	17	24	17	20	25	14
chill °C	11	8	11	16	11	12	14	9	10	17	12	17	24	17	20	25	14

Freezing level m	2300	2900	3450	3450	3350	2950	2550	2550	3250	3450	3750	3900	3950	3900	3850	3900	3700
Cloud base (m)	2850	750	9000	6700	6350	2050	2550	850	6200	6950	8500	6650	8400	8500		4750	8900

	—	—	5:37	—	—	5:35	—	—	5:35	—	—	5:33	—	—	5:31	—	—
	—	8:27	—	—	8:29	—	—	8:30	—	—	8:30	—	—	8:32	—	—	8:34

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 18°C on Sat afternoon, min 8°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 25°C on Wed afternoon, min 12°C on Mon 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	15° C	Dry	Calm (0 kph at 354).
Renton 30 km WSW 160m alt. 2 hours ago	16° C	Dry	Calm (3 kph at 224).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (5 kph at 298).
Grotto wx 35 km NE 321m alt. 52 minutes ago	14° C	Dry	Light winds from the WSW (8 kph at 244).
Renton Airport 36 km WSW 218m alt. 2 hours ago	17° C	Clear	Light winds from the SW.(Wind varies from 200 to 260 degs) (15 kph at 230).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	8° C	Dry	Calm (2 kph at 79).
Auburn 39 km SW 119m alt. 2 hours ago	26° C	Dry	Calm (0 kph at 75).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	8° C	Clear	Light winds from the W.(Wind varies from 160 to 330 degs) (13 kph at 270).	16 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	14° C	Dry	Wind obs. (19 kph from 294 degs) was rejected.
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	17° C	Clear	Light winds from the SSW (13 kph at 200).	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.