– Lat/Long: 47.77° N 121.58° W
Mount Index Weather Forecast
Cascade Range · United StatesIssued: 10 am Thu 24 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Thu 24 Sep Local Time
Updates in:
Update imminent hr min s
2 Mount Index Elevations: 2 Forecast Elevations: Days 1–3 Weather SummaryModerate rain (total 13mm), heaviest on Thu night giving way to a moderate fall of snow, heaviest on Fri night. Freeze-thaw conditions (max 9°C on Thu afternoon, min -2°C on Fri night). Winds decreasing (fresh winds from the SW on Fri afternoon, calm by Sat night). | Days 4–6 Weather SummaryHeavy rain (total 31mm), heaviest during Tue afternoon. Later becoming colder with a dusting of snow on Tue afternoon. Freeze-thaw conditions (max 4°C on Sun afternoon, min 0°C on Tue night). Winds increasing (calm on Sun morning, strong winds from the WSW by Tue morning). | |||||||||||||||||
Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  |  | |  | | |  | | |  |  | | | |
cloudy | some clouds | light rain | mod. rain | light snow | snow shwrs | clear | clear | cloudy | some clouds | clear | some clouds | clear | some clouds | rain shwrs | heavy rain | light snow | some clouds | |
Cloud base (m) | 4000 | 850 | 650 | 600 | 700 | 950 | 1800 | 6500 | 6300 | 8500 | 5450 | 6600 | 5900 | 1550 | 600 | 600 | 800 | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | 3 | 7 | — | — | — | — | — | — | — | — | — | — | 3 | — |
mm | — | — | 5 | 5 | 3 | — | — | — | — | — | — | — | — | — | 6 | 15 | 10 | — |
max °C | 8 | 9 | 9 | 3 | 2 | 0 | 0 | 2 | 3 | 3 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 1 |
min °C | 8 | 9 | 4 | 3 | 2 | -2 | -1 | 2 | 3 | 3 | 4 | 3 | 3 | 4 | 2 | 4 | 2 | 0 |
chill °C | 6 | 6 | -1 | -2 | -3 | -7 | -4 | -1 | 3 | 3 | 2 | 0 | -1 | 1 | -5 | -2 | -4 | -5 |
Freezing level m | 3300 | 3300 | 2700 | 2250 | 2100 | 1600 | 1750 | 2250 | 2400 | 2500 | 2650 | 2450 | 2500 | 2650 | 3100 | 2750 | 2200 | 1800 |
 | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — |
 | — | 7:00 | — | — | 6:58 | — | — | 6:55 | — | — | 6:53 | — | — | 6:52 | — | — | 6:50 | — |
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Mount Index Weather (Days 0-3):
The weather forecast for Mount Index is: Moderate rain (total 13mm), heaviest on Thu night giving way to a moderate fall of snow, heaviest on Fri night. Freeze-thaw conditions (max 9°C on Thu afternoon, min -2°C on Fri night). Winds decreasing (fresh winds from the SW on Fri afternoon, calm by Sat night).
Mount Index Weather (Days 3-6):
Heavy rain (total 31mm), heaviest during Tue afternoon. Later becoming colder with a dusting of snow on Tue afternoon. Freeze-thaw conditions (max 4°C on Sun afternoon, min 0°C on Tue night). Winds increasing (calm on Sun morning, strong winds from the WSW by Tue morning).
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 |  | ||||
SHIP5293 | |||||
SHIP3209 | |||||
| |||||
* 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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