– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Wed 08 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Wed 08 Jul Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Very mild (max 14°C on Thu afternoon, min 5°C on Sat morning). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Very mild (max 19°C on Mon afternoon, min 5°C on Sat night). Wind will be generally light.
	Wed 8		Thursday 9			Friday 10			Saturday 11			Sunday 12			Monday 13
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	clear	clear	clear	clear	rain shwrs	rain shwrs	light rain	rain shwrs	some clouds	clear	clear	clear	clear	clear	clear
km/h	NW	NNW	N	NNW	NNW	SW	WSW	SW	SW	WSW	NW	W	NW	ESE	SE	W	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	0.3	0.4	0.1	0.2	—	—	—	—	—	—	—
max °C	13	12	11	14	13	10	12	10	5	7	7	8	13	14	17	19	18
min °C	11	10	10	13	10	10	11	7	5	6	5	6	11	12	15	18	13
chill °C	10	9	8	12	8	10	10	4	1	3	5	5	11	12	15	18	13

Freezing level m	3850	3950	3800	3850	3700	3400	3400	3400	2750	2750	3300	3250	3550	4000	4100	4350	4250
Cloud base (m)	1550				3400	600	1550	600	650	750	6700	8000					6900

	—	—	5:18	—	—	5:20	—	—	5:20	—	—	5:20	—	—	5:22	—	—
	—	9:05	—	—	9:04	—	—	9:02	—	—	9:02	—	—	9:01	—	—	9:00

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 14°C on Thu afternoon, min 5°C on Sat morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 19°C on Mon afternoon, min 5°C on Sat 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. 1 hour ago	16° C	Dry	Calm (0 kph at 351).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	14° C	-	Calm (2 kph at 191).
Renton 30 km WSW 160m alt. 1 hour ago	18° C	Dry	Calm (0 kph at 25).
Grotto wx 35 km NE 321m alt. 50 minutes ago	18° C	Dry	Calm (5 kph at 252).
Renton Airport 36 km WSW 218m alt. 3 hours ago	22° C	Clear	Light winds from the SSW (6 kph at 210).	16 km
Grotto wx 39 km NE 1101m alt. 47 minutes ago	11° C	Dry	Calm (2 kph at 44).
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (0 kph at 211).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	12° C	Clear	Wind obs. (9 kph from 1 degs) was rejected.	16 km
SHIP7063 43 km W 3m alt. 2 hours ago	18° C		Light winds from the NW (13 kph at 320).
SHIP8162 43 km W 15m alt. 2 hours ago			Light winds from the NW (13 kph at 320).	- 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.