– Lat/Long: 47.77° N 121.58° W
Mount Index Weather Forecast
Cascade Range · United StatesIssued: 4 pm Fri 25 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Fri 25 Sep Local Time
Updates in:
Update imminent hr min s
2 Mount Index Elevations: 2 Forecast Elevations: Days 1–4 Weather SummaryA moderate fall of snow, heaviest on Fri afternoon. Freeze-thaw conditions (max 5°C on Sun afternoon, min -2°C on Fri night). Winds decreasing (fresh winds from the SW on Fri afternoon, calm by Sun morning). | Days 5–7 Weather SummaryHeavy rain (total 23mm), heaviest during Tue afternoon. Later becoming colder with a dusting of snow on Thu morning. Freeze-thaw conditions (max 6°C on Mon night, min -2°C on Wed night). Winds increasing (light winds from the WNW on Mon afternoon, strong winds from the WSW by Tue afternoon). | ||||||||||||||||
Fri 25 | Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | Wednesday 30 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | | | | | | |  |  |  | | | | |
mod. snow | snow shwrs | clear | some clouds | some clouds | some clouds | clear | some clouds | some clouds | clear | some clouds | light rain | heavy rain | rain shwrs | clear | some clouds | some clouds | |
Cloud base (m) | 650 | 850 | 1600 | 1950 | 6800 | 6200 | 7000 | 8100 | 8900 | 2950 | 1750 | 700 | 600 | 9100 | 1850 | 1850 | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | 9 | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 0.6 | 13 | 9 | — | — | — |
max °C | 1 | 0 | 0 | 3 | 4 | 4 | 5 | 5 | 4 | 5 | 6 | 5 | 4 | 4 | 1 | 2 | 2 |
min °C | 1 | -2 | -1 | 2 | 3 | 4 | 5 | 4 | 4 | 5 | 5 | 4 | 4 | 2 | 1 | 2 | -2 |
chill °C | -6 | -7 | -5 | -1 | 3 | 4 | 4 | 1 | 1 | 2 | 2 | -2 | -2 | -2 | -4 | -3 | -7 |
Freezing level m | 1950 | 1550 | 1800 | 2400 | 2700 | 2700 | 2750 | 2750 | 2700 | 2900 | 3350 | 2900 | 2700 | 2250 | 2100 | 2150 | 1900 |
 | — | — | 6:58 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:03 | — | — |
 | 6:58 | — | — | 6:55 | — | — | 6:53 | — | — | 6:52 | — | — | 6:50 | — | — | 6:47 | — |
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Mount Index Weather (Days 0-3):
The weather forecast for Mount Index is: A moderate fall of snow, heaviest on Fri afternoon. Freeze-thaw conditions (max 5°C on Sun afternoon, min -2°C on Fri night). Winds decreasing (fresh winds from the SW on Fri afternoon, calm by Sun morning).
Mount Index Weather (Days 3-6):
Heavy rain (total 23mm), heaviest during Tue afternoon. Later becoming colder with a dusting of snow on Thu morning. Freeze-thaw conditions (max 6°C on Mon night, min -2°C on Wed night). Winds increasing (light winds from the WNW on Mon afternoon, strong winds from the WSW by Tue afternoon).
This table gives the weather forecast for Mount Index at the specific elevation of 1832 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of Mount Index. 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 |
|---|---|---|---|---|---|
 | |||||
 | |||||
BUOY-EBSW1 | |||||
Seattl / oeing Airport |  | ||||
| |||||
BUOY-WPOW1 |
* 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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