– Lat/Long: 47.51° N 121.74° W

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

Issued: 4 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 Mostly dry. Warm (max 22°C on Fri afternoon, min 11°C on Sat night). Wind will be generally light.											Days 5–7 Weather Summary Light rain (total 4mm), mostly falling on Thu morning. Warm (max 24°C on Tue afternoon, min 13°C on Wed night). Wind will be generally light.
	Fri 10		Saturday 11			Sunday 12			Monday 13			Tuesday 14			Wednesday 15
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	some clouds	some clouds	rain shwrs	rain shwrs	some clouds	clear	clear	clear	clear	clear	clear	some clouds	some clouds	clear	rain shwrs
km/h	W	SSW	W	WSW	WSW	WNW	NW	ENE	WNW	NW	E	WNW	NW	ESE	WNW	WNW	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	0.4	0.1	—	—	—	—	—	—	—	—	—	—	2
max °C	22	18	16	19	18	15	20	16	18	22	19	21	24	21	19	23	20
min °C	21	12	13	18	11	11	19	11	14	21	14	17	23	15	17	22	13
chill °C	21	12	13	18	11	11	19	11	14	21	14	17	23	15	17	22	13

Freezing level m	3650	3250	3350	3450	3000	3350	3650	3800	3900	4050	4100	4050	4050	4050	3950	4050	3800
Cloud base (m)		800	1500	1850	700		6750				9600			4550	6150		400

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

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 22°C on Fri afternoon, min 11°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 4mm), mostly falling on Thu morning. Warm (max 24°C on Tue afternoon, min 13°C on Wed 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. 1 hour ago	18° C	Dry	Calm (0 kph at 349).
Snoqualmie Pass 30 km ESE 824m alt. 2 hours ago	18° C	-	Calm (0 kph at 184).
Renton 30 km WSW 160m alt. 3 hours ago	25° C	Dry	Calm (5 kph at 214).
Grotto wx 35 km NE 321m alt. 2 hours ago	21° C	Dry	Light winds from the W (11 kph at 272).
Renton Airport 36 km WSW 218m alt. 3 hours ago	25° C	-	Light winds from the NNW (17 kph at 330).	16 km Low: few
Grotto wx 39 km NE 1101m alt. 1 hour ago	14° C	Dry	Calm (0 kph at 52).
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (3 kph at 236).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	16° C	Dry and partly cloudy.	Wind obs. (6 kph from 1 degs) was rejected.	16 km Low: scattered
SHIP2477 43 km W 15m alt. 3 hours ago				- km
SHIP6978 43 km W 3m alt. 4 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.