– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sat 09 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sat 09 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Warm (max 26°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 Thu morning. Warm (max 25°C on Wed afternoon, min 7°C on Fri morning). Wind will be generally light.
		Sunday 10			Monday 11			Tuesday 12			Wednesday 13			Thursday 14			Friday 15
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	cloudy	cloudy	rain shwrs	clear	clear	clear	clear	clear	some clouds	some clouds	some clouds	some clouds	mod. rain	light rain	light rain	rain shwrs	clear	cloudy
km/h	SSE	WSW	WSW	N	NNW	NW	ESE	ESE	W	ESE	WNW	NW	SSW	WSW	SW	SW	WNW	NW	NE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	0.2	—	—	—	—	—	—	—	—	—	7	2	2	0.7	—	—
max °C	15	13	16	11	14	18	15	22	26	21	23	25	21	11	9	9	9	14	12
min °C	11	12	14	8	10	18	13	18	25	18	21	24	13	9	9	8	7	13	9
chill °C	11	12	14	8	10	18	13	18	25	18	21	24	12	8	8	7	6	12	9

Freezing level m	3300	3050	2450	2550	3250	3550	3750	3950	3900	3950	3900	3900	3650	2450	2150	2050	1650	2950	3150
Cloud base (m)	6300	600	1850	950	6200	6450	8900	6900	8500	8750	4600	6250		750	400	450	450	800	6350

	—	5:35	—	—	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: Mostly dry. Warm (max 26°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 Thu morning. Warm (max 25°C on Wed afternoon, min 7°C on Fri morning). 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	10° C	Dry	Calm (0 kph at 339).
Renton 30 km WSW 160m alt. 49 minutes ago	11° C	Dry	Calm (0 kph at 44).
Black Diamond 32 km SSW 192m alt. 45 minutes ago		-	Calm (0 kph at 0).
Grotto wx 35 km NE 321m alt. 1 hour ago	12° C	Dry	Calm (0 kph at 14).
Renton Airport 36 km WSW 218m alt. 2 hours ago		Clear	Calm (0 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 30 minutes ago	7° C	Dry	Calm (0 kph at 348).
Auburn 39 km SW 119m alt. 40 minutes ago	21° C	Dry	Calm (3 kph at 59).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	11° C	Clear	Calm (0 kph at 0).	16 km
Woodinville 43 km WNW 137.2m alt. 57 minutes ago	5° C	Dry	Calm (0 kph at 153).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	13° 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.