– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Wed 06 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Wed 06 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Very mild (max 11°C on Sat afternoon, min 4°C on Wed night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Very mild (max 19°C on Tue afternoon, min 5°C on Sun night). Wind will be generally light.
		Thursday 7			Friday 8			Saturday 9			Sunday 10			Monday 11			Tuesday 12
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	clear	some clouds	some clouds	cloudy	clear	some clouds	clear	cloudy	some clouds	cloudy	some clouds	rain shwrs	clear	clear	clear	some clouds	clear	clear
km/h	WNW	NW	WNW	WSW	SW	W	SW	N	W	SW	SW	W	N	N	NNW	ESE	ESE	E	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.2	—	—	—	—	—	—	—	—	—	—	—	0.1	—	—	—	—	—	—
max °C	5	5	9	8	6	9	7	9	11	11	8	9	8	7	10	13	15	19	17
min °C	4	4	7	7	5	7	5	8	11	8	7	7	5	6	9	11	14	18	15
chill °C	3	2	6	7	2	4	3	7	11	8	5	5	1	3	8	11	13	18	14

Freezing level m	3100	3300	3350	3400	2350	2550	3050	3450	3400	3250	2700	2500	2500	3150	3400	3650	3900	3950	3900
Cloud base (m)	450	650		6500	5800	2950	8900	8500	6900	6050	5900	2050	2050	9400	9500		7200	8400	8500

	—	5:41	—	—	5:39	—	—	5:37	—	—	5:35	—	—	5:35	—	—	5:33	—	—
	—	—	—	8:25	—	—	8:27	—	—	8:29	—	—	8:30	—	—	8:30	—	—	8:32

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 11°C on Sat afternoon, min 4°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 19°C on Tue afternoon, min 5°C on Sun 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. 42 minutes ago	13° C	Dry	Calm (0 kph at 138).
Renton 30 km WSW 160m alt. 1 hour ago	12° C	Dry	Calm (5 kph at 202).
Black Diamond 32 km SSW 192m alt. 59 minutes ago	20° C	Dry	Calm (3 kph at 254).
Grotto wx 35 km NE 321m alt. 32 minutes ago	11° C	Dry	Light winds from the W (6 kph at 263).
Renton Airport 36 km WSW 218m alt. 2 hours ago	13° C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: overcast
Grotto wx 39 km NE 1101m alt. 48 minutes ago	7° C	Dry	Calm (0 kph at 65).
Auburn 39 km SW 119m alt. 1 hour ago	9° C	Dry	Calm (0 kph at 40).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	6° C	Fog -.	Wind obs. (7 kph from 1 degs) was rejected.	0 km
SHIP6924 43 km W 15m alt. 2 hours ago				- km
SHIP4169 43 km W 3m alt. 2 hours ago

* 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.