– Lat/Long: 48.16° N 120.93° W
Fortress Mountain Weather Forecast
Cascade Range · United StatesIssued: 10 pm Tue 29 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Tue 29 Sep Local Time
Updates in:
Update imminent hr min s
3 Fortress Mountain Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 2mm), mostly falling on Thu night. Freeze-thaw conditions (max 3°C on Thu night, min -1°C on Tue night). Winds decreasing (near gales from the W on Tue night, light winds from the W by Wed night). | Days 5–7 Weather SummaryMostly dry. Mild temperatures (max 9°C on Sun morning, min 3°C on Fri night). Winds increasing (calm on Fri night, strong winds from the WNW by Mon afternoon). | |||||||||||||||
Wednesday 30 | Thursday 1 | Friday 2 | Saturday 3 | Sunday 4 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  |  | |  | | | |  | | | | |
some clouds | clear | some clouds | some clouds | cloudy | light rain | light rain | cloudy | rain shwrs | some clouds | clear | clear | clear | clear | clear | clear | |
Cloud base (m) | 1750 | 5350 | 3300 | 2400 | 1750 | 1600 | 1650 | 1850 | 7850 | 8700 | 8550 | 9400 | 8850 | |||
km/h | ||||||||||||||||
 |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | 0.7 | 1.2 | — | 0.5 | — | — | — | — | — | — | — |
max °C | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 2 | 3 | 4 | 6 | 7 | 7 | 9 | 9 | 8 |
min °C | -1 | -1 | 2 | 0 | 2 | 2 | 2 | 2 | 3 | 3 | 5 | 7 | 7 | 7 | 9 | 7 |
chill °C | -9 | -7 | -2 | -4 | -2 | -4 | -4 | -3 | -1 | 0 | 4 | 6 | 6 | 6 | 7 | 4 |
Freezing level m | 2450 | 2800 | 3000 | 2700 | 3100 | 3250 | 3150 | 2950 | 3200 | 3600 | 3800 | 3800 | 4050 | 4100 | 4000 | 3950 |
 | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — |
 | — | — | 6:45 | — | — | 6:43 | — | — | 6:40 | — | — | 6:38 | — | — | 6:37 | — |
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Fortress Mountain Weather (Days 0-3):
The weather forecast for Fortress Mountain is: Light rain (total 2mm), mostly falling on Thu night. Freeze-thaw conditions (max 3°C on Thu night, min -1°C on Tue night). Winds decreasing (near gales from the W on Tue night, light winds from the W by Wed night).
Fortress Mountain Weather (Days 3-6):
Mostly dry. Mild temperatures (max 9°C on Sun morning, min 3°C on Fri night). Winds increasing (calm on Fri night, strong winds from the WNW by Mon afternoon).
This table gives the weather forecast for Fortress Mountain at the specific elevation of 2670 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of Fortress Mountain. 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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Winthrop Airport (Washington) |  | ||||
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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.