– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sat 25 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sat 25 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 2mm), mostly falling on Sun night. Very mild (max 14°C on Sun afternoon, min 6°C on Sat night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Very mild (max 16°C on Thu afternoon, min 7°C on Tue night). Wind will be generally light.
		Sunday 26			Monday 27			Tuesday 28			Wednesday 29			Thursday 30			Friday 1
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	clear	rain shwrs	rain shwrs	rain shwrs	light rain	light rain	rain shwrs	rain shwrs	some clouds	clear	clear	some clouds	rain shwrs	rain shwrs	some clouds	cloudy	light rain
km/h	E	NW	NW	S	SW	WSW	SW	SW	WNW	NW	NW	NW	SE	W	W	NNE	NW	NW	NW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	1.3	0.1	0.1	0.4	0.1	0.2	0.3	—	—	—	—	0.1	0.1	—	—	0.1
max °C	9	12	14	11	8	10	7	6	9	8	11	15	12	14	16	11	11	13	12
min °C	6	9	13	6	7	9	6	6	7	7	8	14	10	11	15	7	9	13	7
chill °C	6	9	12	5	6	8	5	5	7	7	8	14	10	11	15	7	9	13	7

Freezing level m	1850	1850	2050	1900	1550	1650	1450	1450	1550	1750	2250	2650	2750	2450	2550	2500	2350	2350	2050
Cloud base (m)		2950	2350	2200	650	850	450	450	550	500	750		9300	2600	1800	1950	6750	1700	600

	—	5:58	—	—	5:56	—	—	5:54	—	—	5:52	—	—	5:52	—	—	5:50	—	—
	—	—	—	8:10	—	—	8:12	—	—	8:14	—	—	8:15	—	—	8:16	—	—	8:17

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 2mm), mostly falling on Sun night. Very mild (max 14°C on Sun afternoon, min 6°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 16°C on Thu afternoon, min 7°C on Tue 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. 1 hour ago	8° C	Dry	Calm (2 kph at 19).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	1° C	-	Calm (0 kph at 45).
Renton 30 km WSW 160m alt. 1 hour ago	8° C	Dry	Calm (0 kph at 75).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (5 kph at 0).
Grotto wx 35 km NE 321m alt. 1 hour ago	7° C	Dry	Calm (3 kph at 26).
Renton Airport 36 km WSW 218m alt. 3 hours ago	11° C	Clear	Calm (0 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 58 minutes ago	0° C	-	Calm (0 kph at 339).
Auburn 39 km SW 119m alt. 2 hours ago	11° C	Dry	Calm (0 kph at 162).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	4° C	Clear	Calm (0 kph at 0).	16 km
SHIP6082 42 km WSW 3m alt. 3 hours ago	14° C		Calm (2 kph at 240).

* 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.