– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sun 17 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sun 17 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Mild temperatures (max 8°C on Mon afternoon, min 3°C on Sun night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Very mild (max 13°C on Thu afternoon, min 7°C on Wed night). Wind will be generally light.
		Monday 18			Tuesday 19			Wednesday 20			Thursday 21			Friday 22			Saturday 23
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	some clouds	cloudy	light rain	rain shwrs	light rain	rain shwrs	some clouds	some clouds	some clouds	clear	clear	clear	clear	some clouds	clear	clear	some clouds
km/h	NW	NW	NW	NW	WSW	WNW	N	NNW	NNW	NE	S	WNW	NNW	NW	WNW	WNW	W	W	WNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	0.1	0.3	0.1	0.1	—	—	—	—	—	—	—	—	—	—	—
max °C	4	4	8	6	4	5	5	4	8	9	11	13	12	9	12	11	8	11	7
min °C	3	3	6	4	4	4	4	4	6	7	11	12	9	9	11	8	7	8	5
chill °C	1	1	4	2	2	2	2	1	5	6	11	12	8	8	10	7	5	6	2

Freezing level m	1950	1850	2200	2150	1950	2150	2600	2450	3100	3100	3050	3150	3250	3250	3400	3250	3200	3100	3000
Cloud base (m)	6950	750	1800	1800	450	500	1850	600	850	6900	5250	4400	6900		8600	900	500	7500	9200

	—	5:26	—	—	5:24	—	—	5:24	—	—	5:22	—	—	5:22	—	—	5:20	—	—
	—	—	—	8:39	—	—	8:42	—	—	8:43	—	—	8:44	—	—	8:45	—	—	8:45

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Mild temperatures (max 8°C on Mon afternoon, min 3°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 13°C on Thu afternoon, min 7°C on Wed 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	11° C	Dry	Calm (0 kph at 15).
Snoqualmie Pass 30 km ESE 824m alt. 2 hours ago	5° C	-	Calm (0 kph at 357).
Renton 30 km WSW 160m alt. 45 minutes ago	9° C	Dry	Calm (0 kph at 49).
Duvall 31 km WNW 128m alt. 1 hour ago	11° C	Dry	Calm (0 kph at 8).
Redmond 31 km WNW 170m alt. 2 hours ago	9° C	Dry	Calm (0 kph at 192).
Black Diamond 32 km SSW 192m alt. 3 hours ago		-	Calm (3 kph at 0).
Grotto wx 35 km NE 321m alt. 52 minutes ago	10° C	Dry	Calm (3 kph at 106).
Renton Airport 36 km WSW 218m alt. 3 hours ago	14° C	Clear	Light winds from the SW (7 kph at 230).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	4° C	Dry	Calm (0 kph at 49).
Auburn 39 km SW 119m alt. 2 hours ago		-	Calm (0 kph at 322).

* 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.