– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Mon 13 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Mon 13 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 Wed morning. Warm (max 27°C on Wed afternoon, min 15°C on Mon night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 23°C on Fri afternoon, min 11°C on Fri night). Wind will be generally light.
		Tuesday 14			Wednesday 15			Thursday 16			Friday 17			Saturday 18			Sunday 19
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	some clouds	rain shwrs	clear	clear	some clouds	rain shwrs	rain shwrs	rain shwrs	clear	clear	some clouds	clear	clear	clear	clear	clear
km/h	ESE	WNW	NW	SSW	ENE	NNW	E	WNW	WNW	WSW	W	W	S	WSW	WNW	N	NW	NNW	ENE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	1.2	—	—	—	0.1	0.6	0.2	—	—	—	—	—	—	—	—
max °C	20	22	25	22	21	27	23	25	26	21	17	23	20	16	20	17	18	22	19
min °C	15	18	24	18	19	26	19	22	25	15	15	21	11	14	18	11	14	21	15
chill °C	15	18	24	18	19	26	19	22	25	15	15	21	10	14	18	11	14	21	15

Freezing level m	4150	4250	4350	4200	3800	4200	4250	4300	4450	4500	4150	4250	4050	3650	3650	3900	4050	4100	4150
Cloud base (m)				6400	2700				4350		400			750	1000

	—	5:22	—	—	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: Some drizzle, heaviest during Wed morning. Warm (max 27°C on Wed afternoon, min 15°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 23°C on Fri afternoon, min 11°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. 41 minutes ago	11° C	Dry	Calm (0 kph at 337).
Snoqualmie Pass 30 km ESE 824m alt. 59 minutes ago	10° C	-	Calm (0 kph at 346).
Renton 30 km WSW 160m alt. 2 hours ago	14° C	Dry	Calm (0 kph at 64).
Grotto wx 35 km NE 321m alt. 30 minutes ago	12° C	Dry	Calm (0 kph at 121).
Renton Airport 36 km WSW 218m alt. 2 hours ago	18° C	Clear	Light winds from the NNW (15 kph at 330).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	9° C	Dry	Calm (0 kph at 350).
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (0 kph at 211).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	13° C	Clear	Wind obs. (7 kph from 220 degs) was rejected.	16 km
SHIP4412 43 km W 3m alt. 3 hours ago
SHIP160 43 km W 15m alt. 3 hours ago				- 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.