– Lat/Long: 47.51° N 121.74° W
Mount Si Weather Forecast
Cascade Range · United StatesIssued: 10 pm Sun 11 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Sun 11 Oct Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Mild temperatures (max 8°C on Tue afternoon, min 3°C on Sun night). Wind will be generally light. | Days 5–7 Weather SummaryLight rain (total 4mm), mostly falling on Sat afternoon. Very mild (max 16°C on Fri morning, min 6°C on Sat morning). Wind will be generally light. | |||||||||||||||
Monday 12 | Tuesday 13 | Wednesday 14 | Thursday 15 | Friday 16 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  |  |  |  |  |  | | | | | | | |
clear | clear | clear | some clouds | cloudy | some clouds | cloudy | rain shwrs | light rain | rain shwrs | clear | some clouds | clear | clear | clear | rain shwrs | |
Cloud base (m) | 1800 | 2650 | 2150 | 2000 | 750 | 500 | 500 | 7000 | 9200 | 8900 | ||||||
km/h | ||||||||||||||||
 |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | 0.5 | 0.4 | 0.1 | — | — | — | — | — | 1 |
max °C | 4 | 4 | 5 | 5 | 6 | 8 | 7 | 8 | 8 | 11 | 13 | 14 | 14 | 16 | 16 | 13 |
min °C | 3 | 3 | 5 | 4 | 5 | 7 | 7 | 7 | 8 | 8 | 11 | 14 | 13 | 14 | 15 | 8 |
chill °C | 3 | 3 | 5 | 3 | 3 | 6 | 5 | 4 | 6 | 8 | 10 | 13 | 13 | 14 | 15 | 4 |
Freezing level m | 1950 | 2300 | 3050 | 3100 | 2850 | 2800 | 2800 | 2950 | 3600 | 3800 | 3900 | 3800 | 3850 | 3850 | 3750 | 3150 |
 | — | 7:20 | — | — | 7:22 | — | — | 7:22 | — | — | 7:24 | — | — | 7:26 | — | — |
 | — | — | 6:24 | — | — | 6:22 | — | — | 6:21 | — | — | 6:19 | — | — | 6:16 | — |
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Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: Mostly dry. Mild temperatures (max 8°C on Tue afternoon, min 3°C on Sun night). Wind will be generally light.
Mount Si Weather (Days 3-6):
Light rain (total 4mm), mostly falling on Sat afternoon. Very mild (max 16°C on Fri morning, min 6°C on Sat 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.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
 | |||||
SHIP8320 | |||||
SHIP5034 | |||||
SHIP6345 | |||||
SHIP9173 | |||||
SHIP5592 | |||||
SHIP6724 |
* 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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