– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Tue 14 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Tue 14 Jul Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 4mm), mostly falling on Thu afternoon. Warm (max 26°C on Wed afternoon, min 12°C on Thu night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Warm (max 28°C on Sun afternoon, min 13°C on Fri night). Wind will be generally light.
	Tue 14		Wednesday 15			Thursday 16			Friday 17			Saturday 18			Sunday 19
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	rain shwrs	rain shwrs	light rain	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	clear
km/h	NW	ESE	NW	NNW	E	WSW	WSW	SSE	WNW	NW	NE	NW	NW	ENE	WNW	NW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	0.7	1.6	1.8	0.3	—	—	—	—	—	—	—	—	—
max °C	25	22	23	26	22	16	16	15	17	22	19	19	23	20	24	28	25
min °C	24	16	20	25	16	16	15	12	14	21	13	16	22	15	19	27	21
chill °C	24	16	20	25	16	16	15	12	14	21	13	16	22	15	19	27	21

Freezing level m	4300	4200	4150	4200	4050	3950	4000	4000	4000	4200	4200	4350	4350	4500	4450	4600	4750
Cloud base (m)		8000	5800		900	400	500

	—	—	5:24	—	—	5:24	—	—	5:26	—	—	5:26	—	—	5:28	—	—
	—	9:00	—	—	9:00	—	—	8:59	—	—	8:58	—	—	8:57	—	—	8:55

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 4mm), mostly falling on Thu afternoon. Warm (max 26°C on Wed afternoon, min 12°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 28°C on Sun afternoon, min 13°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. 1 hour ago	29° C	Dry	Calm (0 kph at 332).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	27° C	-	Calm (0 kph at 214).
Renton 30 km WSW 160m alt. 1 hour ago	29° C	Dry	Calm (5 kph at 328).
Grotto wx 35 km NE 321m alt. 2 hours ago	28° C	Dry	Light winds from the W (16 kph at 266).
Renton Airport 36 km WSW 218m alt. 3 hours ago	28° C	Clear	Light winds from the NNW (13 kph at 340).	16 km
Grotto wx 39 km NE 1101m alt. 50 minutes ago	24° C	Dry	Calm (3 kph at 136).
Auburn 39 km SW 119m alt. 1 hour ago		-	Wind obs. (8 kph from 103 degs) was rejected.
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	23° C	Clear	Wind obs. (9 kph from 1 degs) was rejected.	16 km
SHIP2245 43 km W 15m alt. 4 hours ago				- km
SHIP1909 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.