– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Sat 30 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Sat 30 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Warm (max 20°C on Mon afternoon, min 4°C on Sat night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 24°C on Tue afternoon, min 9°C on Thu night). Wind will be generally light.
	Saturday 30			Sunday 31			Monday 1			Tuesday 2			Wednesday 3			Thursday 4
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	clear	clear	clear	clear	some clouds	clear	some clouds	some clouds	clear	some clouds	cloudy	cloudy	clear	some clouds	some clouds	some clouds
km/h	NW	NNW	NE	NW	NW	E	WNW	NW	ESE	W	WNW	SE	WSW	W	S	WSW	W	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	0.1	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	9	13	10	11	15	13	17	20	17	22	24	21	18	20	17	15	18	15
min °C	6	10	4	8	14	9	13	20	14	18	24	13	16	19	11	12	18	9
chill °C	5	9	3	7	14	9	13	20	14	18	24	13	16	19	11	12	18	9

Freezing level m	1450	2150	1950	1900	2650	2750	2800	3150	3000	2950	3200	3150	3000	3050	2800	3000	3150	3100
Cloud base (m)	800	900		1950	2000	3500	6700	6550	3300		2950	8650		4800	2800	2200	2100	6200

	5:15	—	—	5:13	—	—	5:13	—	—	5:13	—	—	5:11	—	—	5:11	—	—
	—	—	8:53	—	—	8:54	—	—	8:55	—	—	8:57	—	—	8:57	—	—	8:58

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 20°C on Mon afternoon, min 4°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 24°C on Tue afternoon, min 9°C on Thu 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. 54 minutes ago	12° C	Dry	Calm (0 kph at 123).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	8° C	-	Calm (0 kph at 326).
Renton 30 km WSW 160m alt. 1 hour ago	12° C	Dry	Calm (0 kph at 126).
Black Diamond 32 km SSW 192m alt. 40 minutes ago		-	Calm (3 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	11° C	-	Calm (0 kph at 0).	16 km Low: few Mid: few
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	2° C	Mist -.	Wind obs. (7 kph from 1 degs) was rejected.	5 km Low: broken Mid: overcast
SHIP3366 43 km W 15m alt. 2 hours ago				- km
SHIP8227 43 km W 3m alt. 1 hour ago	17° C
SHIP4329 43 km W 15m alt. 2 hours ago				- km
SHIP6077 43 km W 15m alt. 2 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.