– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Tue 28 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Tue 28 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Very mild (max 11°C on Thu afternoon, min 1°C on Tue morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Very mild (max 19°C on Sun afternoon, min 6°C on Fri morning). Wind will be generally light.
	Tuesday 28			Wednesday 29			Thursday 30			Friday 1			Saturday 2			Sunday 3
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	rain shwrs	rain shwrs	clear	clear	clear	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	cloudy	some clouds	clear	clear	clear	clear
km/h	SW	W	N	E	N	SE	S	WNW	WNW	WNW	WNW	N	E	NE	ENE	E	N	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	0.1	0.5	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	1	3	3	5	9	9	10	11	10	7	7	7	10	13	14	17	19	18
min °C	1	1	2	3	8	9	9	10	7	6	7	6	8	12	14	15	18	17
chill °C	-3	-2	0	2	8	9	9	10	7	6	6	5	6	12	14	15	18	17

Freezing level m	1450	1650	1700	2200	2650	2750	2850	2900	2800	2600	2600	2550	2850	3050	3400	3450	3650	3650
Cloud base (m)	650	700	950	750				8750	6900	550	900	2700	2650	2700			9400

	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 11°C on Thu afternoon, min 1°C on Tue morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 19°C on Sun afternoon, min 6°C on Fri morning). 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	10° C	Dry	Calm (0 kph at 330).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	4° C	-	Calm (0 kph at 10).
Renton 30 km WSW 160m alt. 35 minutes ago	8° C	Dry	Calm (0 kph at 176).
Black Diamond 32 km SSW 192m alt. 48 minutes ago		-	Calm (0 kph at 266).
Grotto wx 35 km NE 321m alt. 3 hours ago	8° C	Dry	Light winds from the WSW (6 kph at 247).
Renton Airport 36 km WSW 218m alt. 2 hours ago	11° C	Dry and cloudy.	Light winds from the SSE (9 kph at 160).	16 km Low: few Mid: overcast
Grotto wx 39 km NE 1101m alt. 1 hour ago	2° C	-	Calm (0 kph at 31).
Auburn 39 km SW 119m alt. 34 minutes ago	2° C	-	Calm (0 kph at 265).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	1° C	Mist -.	Wind obs. (9 kph from 1 degs) was rejected.	2 km Low: broken Mid: overcast
Woodinville 43 km WNW 137.2m alt. 2 hours ago	6° C	Dry	Wind obs. (6 kph from 312 degs) was rejected.

* 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.