– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Sun 10 May Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Sun 10 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Some drizzle, heaviest during Sun night. Warm (max 25°C on Tue afternoon, min 8°C on Sun night). Wind will be generally light.											Days 5–7 Weather Summary Moderate rain (total 12mm), heaviest on Fri afternoon. Warm (max 21°C on Wed afternoon, min 4°C on Fri night). Wind will be generally light.
	Sun 10		Monday 11			Tuesday 12			Wednesday 13			Thursday 14			Friday 15
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	rain shwrs	clear	clear	clear	some clouds	some clouds	some clouds	some clouds	clear	some clouds	clear	rain shwrs	some clouds	light rain	mod. rain	rain shwrs
km/h	WNW	NW	NNW	NW	ESE	SE	W	SSE	WNW	WNW	SSW	W	WSW	SSW	SSW	WSW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	1	—	—	—	—	—	—	—	—	—	—	0.1	—	1.1	6	3
max °C	15	11	14	18	15	23	25	20	18	21	16	12	12	12	8	10	8
min °C	13	8	10	17	13	17	25	14	16	20	9	10	12	6	8	8	4
chill °C	12	8	9	17	13	17	25	14	16	20	8	10	11	4	7	6	1

Freezing level m	2350	2250	3200	3450	3750	3900	3850	3800	3550	3400	3200	2950	2850	1850	1800	1800	1200
Cloud base (m)	1600	950		8500	9100	6450	8800	5650	4250		3300	2000	850		500	400	800

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

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Sun night. Warm (max 25°C on Tue afternoon, min 8°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 12mm), heaviest on Fri afternoon. Warm (max 21°C on Wed afternoon, min 4°C on Fri 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. 55 minutes ago	14° C	Dry	Calm (0 kph at 281).
Renton 30 km WSW 160m alt. 1 hour ago	11° C	Dry	Calm (0 kph at 15).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (3 kph at 0).
Grotto wx 35 km NE 321m alt. 48 minutes ago	12° C	Dry	Calm (0 kph at 93).
Renton Airport 36 km WSW 218m alt. 3 hours ago		Clear	Calm (0 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 47 minutes ago	6° C	Dry	Calm (0 kph at 352).
Auburn 39 km SW 119m alt. 1 hour ago	17° C	Dry	Calm (0 kph at 97).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	7° C	Dry and partly cloudy.	Light winds from the W.(Wind varies from 230 to 310 degs) (13 kph at 270).	16 km Low: few Mid: broken
Woodinville 43 km WNW 137.2m alt. 55 minutes ago	11° C	Dry	Wind obs. (6 kph from 253 degs) was rejected.
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	16° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: broken

* 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.