– Lat/Long: 47.51° N 121.74° W

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

Issued: 4 am Fri 10 Jul Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Warm (max 22°C on Fri afternoon, min 11°C on Fri night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 24°C on Mon afternoon, min 10°C on Wed night). Wind will be generally light.
	Friday 10			Saturday 11			Sunday 12			Monday 13			Tuesday 14			Wednesday 15
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	rain shwrs	some clouds	some clouds	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear
km/h	W	W	SW	WSW	WSW	WSW	W	NW	ESE	WNW	WNW	SE	W	WNW	SSE	W	NNW	NE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	0.1	—	—	0.1	0.4	—	—	—	—	—	—	—	—	—	—	—
max °C	18	22	17	15	20	17	14	20	17	20	24	20	20	24	20	16	19	16
min °C	15	21	11	13	18	11	11	19	12	16	23	14	16	22	11	13	19	10
chill °C	15	21	11	13	18	10	11	19	12	16	23	14	16	22	11	13	19	10

Freezing level m	3600	3600	3350	3300	3450	3100	3450	3800	4000	4050	4250	4150	3850	3950	3750	3150	3650	4000
Cloud base (m)		2350	600	1550	1900	1550					5900	8500

	5:20	—	—	5:20	—	—	5:20	—	—	5:22	—	—	5:22	—	—	5:24	—	—
	—	—	9:02	—	—	9:02	—	—	9:01	—	—	9:00	—	—	9:00	—	—	9:00

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 22°C on Fri afternoon, min 11°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 24°C on Mon afternoon, min 10°C on Wed 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. 32 minutes ago	18° C	Dry	Calm (0 kph at 169).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	14° C	-	Calm (0 kph at 43).
Renton 30 km WSW 160m alt. 1 hour ago	17° C	Dry	Calm (2 kph at 190).
Grotto wx 35 km NE 321m alt. 28 minutes ago	14° C	Dry	Light winds from the W (6 kph at 281).
Renton Airport 36 km WSW 218m alt. 2 hours ago	16° C	-	Light winds from the S (9 kph at 170).	16 km Low: few
Grotto wx 39 km NE 1101m alt. 33 minutes ago	13° C	Dry	Calm (0 kph at 49).
Auburn 39 km SW 119m alt. 31 minutes ago		-	Calm (0 kph at 200).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	9° C	Clear	Wind obs. (9 kph from 220 degs) was rejected.	16 km
SHIP8826 43 km W 3m alt. 2 hours ago
SHIP2367 43 km W 15m alt. 2 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.