– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Mon 27 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Mon 27 Apr 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 17°C on Thu afternoon, min 6°C on Mon night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 24°C on Sun afternoon, min 9°C on Thu night). Wind will be generally light.
		Tuesday 28			Wednesday 29			Thursday 30			Friday 1			Saturday 2			Sunday 3
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	cloudy	rain shwrs	rain shwrs	clear	clear	clear	clear	some clouds	some clouds	cloudy	some clouds	some clouds	some clouds	rain shwrs	clear	clear	clear	clear
km/h	SW	WSW	W	NE	NW	NW	ESE	W	NW	SW	NW	NW	ENE	N	NNW	E	N	NNW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.4	—	0.1	0.3	—	—	—	—	—	—	—	—	—	—	0.1	—	—	—	—
max °C	7	7	9	9	12	16	12	15	17	13	13	15	12	14	19	16	22	24	20
min °C	6	7	8	6	8	15	10	12	17	9	10	14	10	11	18	14	18	24	17
chill °C	5	6	8	6	8	15	10	12	17	9	10	14	10	11	18	14	18	24	17

Freezing level m	1450	1450	1650	1800	2200	2650	2750	2850	2900	2800	2650	2650	2700	2650	2950	3250	3400	3550	3450
Cloud base (m)	700	750	850	950			2600	9300	8250	6650			2850	2300	2100			3450

	—	5:54	—	—	5:52	—	—	5:52	—	—	5:50	—	—	5:48	—	—	5:47	—	—
	—	—	—	8:14	—	—	8:15	—	—	8:16	—	—	8:17	—	—	8:19	—	—	8:21

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 17°C on Thu afternoon, min 6°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 24°C on Sun 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. 27 minutes ago	11° C	Dry	Calm (0 kph at 324).
Snoqualmie Pass 30 km ESE 824m alt. 41 minutes ago	5° C	-	Calm (0 kph at 272).
Renton 30 km WSW 160m alt. 2 hours ago	9° C	Dry	Calm (0 kph at 136).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (0 kph at 0).
Grotto wx 35 km NE 321m alt. 2 hours ago	8° C	Dry	Light winds from the W (10 kph at 274).
Renton Airport 36 km WSW 218m alt. 2 hours ago	10° C	Dry and cloudy.	Light winds from the SSE (7 kph at 150).	16 km Low: overcast
Grotto wx 39 km NE 1101m alt. 50 minutes ago	3° C	Dry	Calm (0 kph at 63).
Auburn 39 km SW 119m alt. 2 hours ago	6° C	Dry	Calm (0 kph at 265).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	2° C	Fog -.	Wind obs. (7 kph from 1 degs) was rejected.	0 km Low: broken Mid: overcast
Woodinville 43 km WNW 137.2m alt. 39 minutes ago	6° C	Dry	Calm (3 kph at 302).

* 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.