– Lat/Long: 47.51° N 121.74° W

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

Issued: 10 pm Fri 10 Jul 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 Sat night. Very mild (max 16°C on Mon afternoon, min 5°C on Sun morning). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Very mild (max 17°C on Tue afternoon, min 10°C on Wed night). Wind will be generally light.
		Saturday 11			Sunday 12			Monday 13			Tuesday 14			Wednesday 15			Thursday 16
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	rain shwrs	some clouds	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	clear	clear	clear	clear
km/h	SW	SW	WSW	SW	W	NW	NNW	WSW	WNW	WNW	WNW	WNW	W	SW	W	NW	N	NNW	N
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	0.1	—	0.7	0.3	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	13	9	13	12	7	13	12	14	16	16	15	17	16	13	15	13	13	16	16
min °C	9	8	12	6	5	11	10	12	15	14	15	16	13	13	14	10	11	14	15
chill °C	7	6	11	2	3	11	10	12	15	14	15	16	13	12	14	9	10	14	15

Freezing level m	3300	3400	3500	3150	3400	3700	3900	4000	4150	4300	4200	4100	4000	3800	3650	3400	3950	4100	4300
Cloud base (m)	800	750	1850	750					8950					9000	5450

	—	5:20	—	—	5:20	—	—	5:22	—	—	5:22	—	—	5:24	—	—	5:24	—	—
	—	—	—	9:02	—	—	9:01	—	—	9:00	—	—	9:00	—	—	9:00	—	—	8:59

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Sat night. Very mild (max 16°C on Mon afternoon, min 5°C on Sun morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 17°C on Tue afternoon, min 10°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	17° C	Dry	Calm (0 kph at 337).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	15° C	-	Calm (0 kph at 154).
Renton 30 km WSW 160m alt. 2 hours ago	18° C	Dry	Calm (0 kph at 1).
Grotto wx 35 km NE 321m alt. 35 minutes ago	16° C	Dry	Light winds from the WSW (6 kph at 255).
Renton Airport 36 km WSW 218m alt. 2 hours ago	18° C	Dry and partly cloudy.	Wind obs. (20 kph from 330 degs) was rejected.	16 km Low: broken Mid: broken
Grotto wx 39 km NE 1101m alt. 37 minutes ago	13° C	Dry	Calm (0 kph at 53).
Auburn 39 km SW 119m alt. 44 minutes ago	28° C	Dry	Calm (2 kph at 214).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	13° C	Dry and partly cloudy.	Wind obs. (9 kph from 1 degs) was rejected.	16 km Low: broken
SHIP8197 43 km W 3m alt. 1 hour ago
SHIP6644 43 km W 3m alt. 3 hours ago

* 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.