– Lat/Long: 47.77° N 121.58° W
Mount Index
Weather Forecast, United StatesIssued: 10 pm Sun 15 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Sun 15 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Sun 15 Mar 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 Sun night. Turning milder with heavy rain (total 60mm), heaviest during Wed morning. Freeze-thaw conditions (max 4°C on Mon night, min -2°C on Sun night). Winds increasing (moderate winds from the SW on Sun night, strong winds from the WSW by Mon night). | Days 5–7 Weather SummaryHeavy rain (total 24mm), mostly on Wed night. Becoming colder with a light covering of snow, mostly falling on Fri morning. Freeze-thaw conditions (max 4°C on Wed night, min -7°C on Sat morning). Winds decreasing (near gales from the WSW on Fri morning, light winds from the NW by Sat afternoon). | ||||||||||||||||||
Monday 16 | Tuesday 17 | Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | |  |  | | | | |  | | |  |  |  |  | |
mod. snow | mod. rain | light rain | rain shwrs | light snow | light rain | heavy rain | heavy rain | heavy rain | heavy rain | light rain | light rain | mod. rain | light snow | light snow | light snow | snow shwrs | some clouds | clear | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
9 | — | — | — | 2 | — | — | — | — | — | — | — | — | 2 | 3 | 2 | 2 | — | — | |
— | 7 | 4 | 0.5 | — | 1.6 | 14 | 18 | 15 | 11 | 0.6 | 2 | 8 | 3 | — | — | — | — | — | |
max °C | 1 | 2 | 3 | 4 | 2 | 3 | 4 | 3 | 4 | 4 | 3 | 3 | 3 | 2 | 0 | -3 | -7 | -5 | -2 |
min °C | -2 | 2 | 3 | 2 | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | -1 | -6 | -7 | -6 | -4 |
-8 | -4 | -3 | -5 | -5 | -3 | -2 | -3 | -2 | -4 | -4 | -4 | -3 | -6 | -8 | -12 | -14 | -12 | -7 | |
1750 | 3100 | 2700 | 2300 | 2300 | 2550 | 2600 | 2500 | 2600 | 2400 | 2650 | 2650 | 2450 | 1950 | 1650 | 900 | 750 | 1100 | 600 | |
Cloud base (m) | 650 | 700 | 650 | 750 | 700 | 600 | 600 | 650 | 600 | 850 | 1650 | 700 | 650 | 650 | 650 | 650 | 650 | 800 | 650 |
 | — | 7:18 | — | — | 7:15 | — | — | 7:13 | — | — | 7:11 | — | — | 7:09 | — | — | 7:07 | — | — |
 | — | — | 7:12 | — | — | 7:14 | — | — | 7:15 | — | — | 7:16 | — | — | 7:17 | — | — | 7:20 | — |
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Mount Index Weather (Days 0-3):
The weather forecast for Mount Index is: A moderate fall of snow heaviest on Sun night. Turning milder with heavy rain (total 60mm), heaviest during Wed morning. Freeze-thaw conditions (max 4°C on Mon night, min -2°C on Sun night). Winds increasing (moderate winds from the SW on Sun night, strong winds from the WSW by Mon night).
Mount Index Weather (Days 3-6):
Heavy rain (total 24mm), mostly on Wed night. Becoming colder with a light covering of snow, mostly falling on Fri morning. Freeze-thaw conditions (max 4°C on Wed night, min -7°C on Sat morning). Winds decreasing (near gales from the WSW on Fri morning, light winds from the NW by Sat 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 |
|---|---|---|---|---|---|
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* 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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