– Lat/Long: 47.77° N 121.58° W
Mount Index Weather Forecast
Cascade Range · United StatesIssued: 10 am Wed 23 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Wed 23 Sep Local Time
Updates in:
Update imminent hr min s
2 Mount Index Elevations: 2 Forecast Elevations: Days 1–3 Weather SummaryMild at first with light rain (total 6mm) on Thu night followed by colder weather and light fall of snow, heaviest on Fri night. Freeze-thaw conditions (max 10°C on Thu afternoon, min -1°C on Fri night). Winds increasing (light winds from the S on Wed night, fresh winds from the SSW by Thu night). | Days 4–6 Weather SummaryMostly dry. Freeze-thaw conditions (max 6°C on Mon night, min -1°C on Sat morning). Wind will be generally light. | |||||||||||||||||
Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  |  |  |  | | |  | |  |  | | | | |
some clouds | rain shwrs | rain shwrs | some clouds | cloudy | light rain | light rain | mod. snow | snow shwrs | some clouds | some clouds | cloudy | some clouds | clear | some clouds | some clouds | some clouds | some clouds | |
Cloud base (m) | 2450 | 2000 | 6100 | 4700 | 3400 | 750 | 1450 | 650 | 650 | 1550 | 1750 | 6800 | 6250 | 6150 | 5700 | 4850 | ||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | 8 | 9 | — | — | — | — | — | — | — | — | — |
mm | — | 0.1 | 0.1 | — | — | 3 | 3 | — | — | — | — | — | — | — | — | — | — | — |
max °C | 5 | 5 | 8 | 9 | 10 | 8 | 3 | 1 | -1 | 0 | 2 | 4 | 4 | 5 | 5 | 4 | 5 | 6 |
min °C | 4 | 5 | 5 | 9 | 9 | 5 | 3 | 1 | -1 | -1 | 1 | 3 | 4 | 5 | 4 | 4 | 5 | 5 |
chill °C | 0 | 2 | 2 | 7 | 6 | 1 | -1 | -4 | -7 | -5 | -2 | 2 | 4 | 3 | 0 | 0 | 2 | 2 |
Freezing level m | 2750 | 2900 | 3400 | 3400 | 3300 | 2650 | 2250 | 2100 | 1650 | 1850 | 2250 | 2650 | 2750 | 2900 | 2750 | 2750 | 3000 | 3100 |
 | 6:52 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 7:00 | — | — |
 | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:55 | — | — | 6:53 | — | — | 6:52 | — |
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Mount Index Weather (Days 0-3):
The weather forecast for Mount Index is: Mild at first with light rain (total 6mm) on Thu night followed by colder weather and light fall of snow, heaviest on Fri night. Freeze-thaw conditions (max 10°C on Thu afternoon, min -1°C on Fri night). Winds increasing (light winds from the S on Wed night, fresh winds from the SSW by Thu night).
Mount Index Weather (Days 3-6):
Mostly dry. Freeze-thaw conditions (max 6°C on Mon night, min -1°C on Sat morning). Wind will be generally light.
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 |
|---|---|---|---|---|---|
 | |||||
SHIP5463 | |||||
SHIP2655 | |||||
SHIP5552 | |||||
SHIP6668 | |||||
SHIP12200 | |||||
SHIP4290 |
* 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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