– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Fri 08 May Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Fri 08 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 12°C on Sat night, min 4°C on Fri night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Very mild (max 19°C on Tue afternoon, min 9°C on Mon afternoon). Wind will be generally light.
	Fri 8		Saturday 9			Sunday 10			Monday 11			Tuesday 12			Wednesday 13
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	clear	cloudy	some clouds	cloudy	rain shwrs	rain shwrs	some clouds	some clouds	clear	clear	clear	clear	cloudy	clear	clear
km/h	W	WSW	N	NW	SW	SW	WSW	W	NNE	N	ESE	ESE	ESE	SSW	SW	W	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	0.1	0.2	—	—	—	—	—	—	—	—	—
max °C	6	5	8	11	12	9	9	6	7	11	13	16	19	18	18	19	17
min °C	5	4	7	10	10	8	8	4	6	9	12	14	19	16	17	18	13
chill °C	2	1	5	10	10	7	6	2	3	9	12	13	19	16	17	18	13

Freezing level m	2300	2900	3450	3450	3350	2950	2550	2550	3250	3450	3750	3900	3950	3900	3850	3900	3700
Cloud base (m)	2850	750	9000	6700	6350	2050	2550	850	6200	6950	8500	6650	8400	8500		4750	8900

	—	—	5:37	—	—	5:35	—	—	5:35	—	—	5:33	—	—	5:31	—	—
	—	8:27	—	—	8:29	—	—	8:30	—	—	8:30	—	—	8:32	—	—	8:34

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 12°C on Sat night, min 4°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 19°C on Tue afternoon, min 9°C on Mon afternoon). 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. 58 minutes ago	16° C	Dry	Calm (0 kph at 346).
Renton 30 km WSW 160m alt. 1 hour ago	17° C	Dry	Calm (5 kph at 292).
Black Diamond 32 km SSW 192m alt. 59 minutes ago		-	Wind obs. (10 kph from 298 degs) was rejected.
Grotto wx 35 km NE 321m alt. 2 hours ago	17° C	Dry	Light winds from the WSW (14 kph at 256).
Renton Airport 36 km WSW 218m alt. 3 hours ago	16° C	Dry and partly cloudy.	Light winds from the WSW (19 kph at 240).	16 km Low: few Mid: scattered High: scattered
Grotto wx 39 km NE 1101m alt. 42 minutes ago	10° C	Dry	Wind obs. (8 kph from 140 degs) was rejected.
Auburn 39 km SW 119m alt. 1 hour ago	29° C	Dry	Calm (0 kph at 19).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	9° C	-	Light winds from the W.(Wind varies from 180 to 330 degs) (15 kph at 260).	16 km Low: few Mid: few
Woodinville 43 km WNW 137.2m alt. 47 minutes ago	16° C	Dry	Light winds from the W (16 kph at 263).
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	16° C	Dry and partly cloudy.	Light winds from the S (15 kph at 180).	16 km Low: broken Mid: broken

* 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.