– Lat/Long: 47.77° N 121.58° W
Mount Index Weather Forecast
Cascade Range · United StatesIssued: 4 am Fri 25 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Fri 25 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 2mm) on Fri morning followed by colder weather and light fall of snow, heaviest on Fri afternoon. Freeze-thaw conditions (max 4°C on Fri morning, min -1°C on Fri night). Winds decreasing (strong winds from the SSW on Fri morning, calm by Sun morning). | Days 4–6 Weather SummaryHeavy rain (total 31mm), heaviest during Tue morning. Freeze-thaw conditions (max 5°C on Mon afternoon, min -1°C on Wed night). Winds increasing (light winds from the WNW on Mon morning, fresh winds from the WSW by Mon night). | |||||||||||||||||
Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | Wednesday 30 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  | | |  | | |  |  |  |  | | |  | |
light snow | mod. snow | snow shwrs | clear | some clouds | cloudy | some clouds | clear | clear | clear | clear | mod. rain | heavy rain | light rain | rain shwrs | some clouds | some clouds | some clouds | |
Cloud base (m) | 850 | 700 | 750 | 1500 | 1800 | 6350 | 5350 | 6150 | 650 | 600 | 600 | 700 | 1550 | 1900 | 2100 | |||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | 2 | 6 | 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 2 | — | — | — | — | — | — | — | — | — | — | 8 | 16 | 4 | 3 | — | — | — |
max °C | 4 | 2 | 0 | 0 | 3 | 4 | 4 | 4 | 4 | 4 | 5 | 4 | 4 | 4 | 4 | 1 | 2 | 1 |
min °C | 2 | 1 | -1 | -1 | 2 | 3 | 4 | 4 | 4 | 4 | 5 | 3 | 3 | 4 | 1 | 1 | 1 | -1 |
chill °C | -5 | -5 | -6 | -5 | 0 | 3 | 4 | 2 | 2 | 1 | 2 | -2 | -2 | -1 | -4 | -4 | -4 | -6 |
Freezing level m | 2150 | 2000 | 1600 | 1850 | 2400 | 2600 | 2550 | 2650 | 2700 | 2750 | 2850 | 3100 | 2600 | 2550 | 2150 | 2000 | 2000 | 1850 |
 | 6:56 | — | — | 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: Mild at first with light rain (total 2mm) on Fri morning followed by colder weather and light fall of snow, heaviest on Fri afternoon. Freeze-thaw conditions (max 4°C on Fri morning, min -1°C on Fri night). Winds decreasing (strong winds from the SSW on Fri morning, calm by Sun morning).
Mount Index Weather (Days 3-6):
Heavy rain (total 31mm), heaviest during Tue morning. Freeze-thaw conditions (max 5°C on Mon afternoon, min -1°C on Wed night). Winds increasing (light winds from the WNW on Mon morning, fresh winds from the WSW by Mon night).
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 |
|---|---|---|---|---|---|
Everett Airport |  | ||||
Renton Airport |  | ||||
BUOY-EBSW1 | |||||
Seattl / oeing Airport | | ||||
SHIP11209 |
* 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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