– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Mon 10 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Mon 10 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Very mild (max 16°C on Tue afternoon, min 11°C on Tue night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Very mild (max 19°C on Fri afternoon, min 13°C on Thu morning). Wind will be generally light.
	Monday 10			Tuesday 11			Wednesday 12			Thursday 13			Friday 14			Saturday 15
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	clear	clear	clear	clear	clear	rain shwrs	clear	some clouds	clear	clear	clear	some clouds	rain shwrs	cloudy	some clouds	clear
Cloud base (m)	8750	8400				8750	750	950		3500	3500	3500	3500	3300	3150	6050	6200	5050
km/h	NNW	NNW	N	NNW	NW	N	NNW	NW	N	ESE	NW	NNE	SSE	W	NW	WSW	W	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	0.2	—	—	—	—	—	—	0.1	—	—	—
max °C	13	15	14	13	16	14	11	12	13	15	18	17	17	19	18	15	16	15
min °C	12	14	12	12	14	11	11	12	12	13	17	16	16	18	14	14	16	13
chill °C	11	13	11	11	13	9	10	12	11	13	17	16	16	18	14	14	16	13

Freezing level m	4000	3950	4100	3900	3900	3850	3600	3650	3650	3600	3700	3700	3600	3750	3700	3750	3900	3850

	5:54	—	—	5:56	—	—	5:58	—	—	5:58	—	—	6:01	—	—	6:01	—	—
	—	—	8:27	—	—	8:25	—	—	8:23	—	—	8:22	—	—	8:21	—	—	8:19

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 16°C on Tue afternoon, min 11°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 19°C on Fri afternoon, min 13°C on Thu morning). 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
Renton 30 km WSW 160m alt. 51 minutes ago	14° C	Dry	Calm (2 kph at 226).
Black Diamond 32 km SSW 192m alt. 58 minutes ago		-	Calm (2 kph at 207).
Renton Airport 36 km WSW 218m alt. 2 hours ago	15° C	Dry and cloudy.	Light winds from the S (7 kph at 170).	16 km Low: overcast
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (0 kph at 213).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	9° C	Clear	Wind obs. (9 kph from 1 degs) was rejected.	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	14° C	Dry and cloudy.	Wind obs. (6 kph from 230 degs) was rejected.	16 km Low: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	13° C	Mist -.	Light winds from the S.(Wind varies from 004 to 008 degs) (7 kph at 190).	10 km Low: overcast
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 42 minutes ago	17° C	Dry	Wind obs. (11 kph from 221 degs) was rejected.
Seattle 49 km WSW 100m alt. 56 minutes ago	30° C	-	Wind obs. (8 kph from 173 degs) was rejected.

* 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.