– Lat/Long: 47.51° N 121.74° W
Mount Si Weather Forecast
Cascade Range · United StatesIssued: 10 am Sun 18 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Sun 18 Oct Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–3 Weather SummaryMostly dry. Very mild (max 16°C on Tue afternoon, min 6°C on Sun morning). Wind will be generally light. | Days 4–6 Weather SummaryLight rain (total 2mm), mostly falling on Thu night. Very mild (max 18°C on Wed afternoon, min 4°C on Fri night). Wind will be generally light. | |||||||||||||||||
Sunday 18 | Monday 19 | Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  | | |  | | | |  | |  |  | | | |
clear | some clouds | cloudy | some clouds | some clouds | some clouds | clear | clear | clear | clear | some clouds | clear | cloudy | some clouds | rain shwrs | rain shwrs | rain shwrs | some clouds | |
Cloud base (m) | 8300 | 7100 | 5600 | 2300 | 5800 | 5700 | 3250 | 4550 | 8650 | 7100 | 5950 | 800 | 600 | 750 | 6400 | |||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1.6 | 0.3 | 0.2 | — |
max °C | 10 | 13 | 10 | 11 | 12 | 9 | 13 | 16 | 12 | 17 | 18 | 13 | 11 | 11 | 7 | 6 | 7 | 6 |
min °C | 6 | 12 | 9 | 9 | 11 | 8 | 8 | 15 | 11 | 12 | 16 | 10 | 9 | 10 | 5 | 5 | 7 | 4 |
chill °C | 5 | 12 | 9 | 9 | 11 | 8 | 8 | 15 | 10 | 12 | 16 | 10 | 9 | 9 | 3 | 3 | 6 | 4 |
Freezing level m | 2900 | 3100 | 2700 | 2350 | 2400 | 2700 | 2850 | 3000 | 3150 | 3100 | 3100 | 3050 | 2900 | 2650 | 1400 | 1300 | 1400 | 2000 |
 | 7:28 | — | — | 7:30 | — | — | 7:31 | — | — | 7:33 | — | — | 7:35 | — | — | 7:35 | — | — |
 | — | 6:14 | — | — | 6:12 | — | — | 6:09 | — | — | 6:07 | — | — | 6:06 | — | — | 6:05 | — |
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Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: Mostly dry. Very mild (max 16°C on Tue afternoon, min 6°C on Sun morning). Wind will be generally light.
Mount Si Weather (Days 3-6):
Light rain (total 2mm), mostly falling on Thu night. Very mild (max 18°C on Wed afternoon, min 4°C on Fri 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.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
 | |||||
Seattl / oeing Airport | | ||||
| |||||
BUOY-EBSW1 | |||||
* 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.
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