– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Tue 26 May Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Tue 26 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Some drizzle, heaviest during Fri morning. Warm (max 22°C on Thu afternoon, min 8°C on Tue afternoon). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Very mild (max 11°C on Sat afternoon, min 5°C on Sat night). Wind will be generally light.
	Tue 26		Wednesday 27			Thursday 28			Friday 29			Saturday 30			Sunday 31
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	some clouds	light rain	light rain	some clouds	some clouds	rain shwrs	some clouds	rain shwrs	light rain	rain shwrs
km/h	NNW	NNE	NW	NW	E	WNW	WNW	SSW	SW	SW	NW	NW	NW	WNW	WNW	NW	W
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.4	0.1	—	—	—	—	—	—	0.9	0.4	—	—	0.1	—	0.1	0.2	0.1
max °C	10	10	15	19	17	20	22	19	9	10	10	9	11	9	8	11	10
min °C	8	8	12	18	14	17	22	9	8	9	6	7	9	5	6	10	5
chill °C	7	8	12	18	14	17	22	7	7	8	5	6	8	5	5	10	5

Freezing level m	2250	3650	3850	3950	3800	3750	3900	3400	2700	2600	3000	1450	2050	1750	1450	1850	1850
Cloud base (m)	500	7150		7950		9300		400	550	600	700	700	950	1700	750	900	950

	—	—	5:16	—	—	5:16	—	—	5:16	—	—	5:15	—	—	5:13	—	—
	—	8:50	—	—	8:51	—	—	8:52	—	—	8:52	—	—	8:53	—	—	8:54

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Fri morning. Warm (max 22°C on Thu afternoon, min 8°C on Tue afternoon). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 11°C on Sat afternoon, min 5°C on Sat 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. 2 hours ago	16° C	Dry	Calm (0 kph at 23).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	11° C	-	Calm (0 kph at 197).
Renton 30 km WSW 160m alt. 2 hours ago	18° C	Dry	Calm (0 kph at 11).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Wind obs. (8 kph from 218 degs) was rejected.
Grotto wx 35 km NE 321m alt. 2 hours ago	13° C	Dry	Light winds from the WSW (6 kph at 243).
Renton Airport 36 km WSW 218m alt. 3 hours ago	16° C	Dry and partly cloudy.	Light winds from the N (6 kph at 1).	16 km Low: broken Mid: broken
Grotto wx 39 km NE 1101m alt. 1 hour ago	8° C	Dry	Calm (0 kph at 69).
Auburn 39 km SW 119m alt. 1 hour ago	17° C	Dry	Calm (0 kph at 117).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	7° C	Dry and cloudy.	Wind obs. (7 kph from 1 degs) was rejected.	16 km Low: few Mid: overcast
SHIP3708 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.