– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Sat 23 May Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Sat 23 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 8mm), mostly falling on Mon afternoon. Very mild (max 11°C on Sun afternoon, min 2°C on Mon night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Very mild (max 12°C on Thu afternoon, min 3°C on Tue afternoon). Wind will be generally light.
	Sat 23		Sunday 24			Monday 25			Tuesday 26			Wednesday 27			Thursday 28
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	rain shwrs	clear	clear	some clouds	cloudy	light rain	rain shwrs	cloudy	rain shwrs	rain shwrs	some clouds	clear	clear	clear	clear	some clouds
km/h	W	WSW	SW	SW	SSW	SW	SW	WSW	NW	NW	N	NNW	NNW	N	NNW	NW	WNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	0.1	—	—	—	—	4	3	—	0.4	0.3	—	—	—	—	—	—
max °C	10	8	6	11	10	6	5	3	2	4	5	5	11	10	10	12	10
min °C	9	5	6	9	8	6	4	2	2	3	4	5	9	8	10	11	6
chill °C	9	3	3	8	5	5	-1	-1	0	1	1	2	7	6	8	10	4

Freezing level m	3200	2950	3050	3150	2900	2200	1950	1650	1600	1900	2600	3550	3650	3800	3600	3650	3550
Cloud base (m)	750	1800		4650	6650	2400	600	850	600	550	800	850	9000		8900	9100	6450

	—	—	5:20	—	—	5:18	—	—	5:18	—	—	5:16	—	—	5:16	—	—
	—	8:45	—	—	8:46	—	—	8:49	—	—	8:50	—	—	8:51	—	—	8:52

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 8mm), mostly falling on Mon afternoon. Very mild (max 11°C on Sun afternoon, min 2°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 12°C on Thu afternoon, min 3°C on Tue afternoon). 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	22° C	Dry	Calm (0 kph at 300).
Snoqualmie Pass 30 km ESE 824m alt. 21 minutes ago	19° C	-	Calm (0 kph at 199).
Renton 30 km WSW 160m alt. 54 minutes ago	18° C	Dry	Calm (2 kph at 320).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (3 kph at 289).
Grotto wx 35 km NE 321m alt. 56 minutes ago	18° C	Dry	Moderate winds from the W (24 kph at 270).
Renton Airport 36 km WSW 218m alt. 2 hours ago	17° C	Clear	Light winds from the SSW (7 kph at 200).	16 km
Grotto wx 39 km NE 1101m alt. 48 minutes ago	17° C	Dry	Calm (2 kph at 42).
Auburn 39 km SW 119m alt. 17 minutes ago	29° C	Dry	Calm (0 kph at 183).
SHIP6579 43 km W 3m alt. 3 hours ago	17° C
SHIP3801 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.