– Lat/Long: 48.16° N 120.93° W
Fortress Mountain Weather Forecast
Cascade Range · United StatesIssued: 4 am Tue 22 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Tue 22 Sep Local Time
Updates in:
Update imminent hr min s
3 Fortress Mountain Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 4°C on Tue morning, min -2°C on Thu night). Winds increasing (light winds from the S on Thu morning, strong winds from the SSW by Thu night). | Days 4–6 Weather SummaryA light covering of new snow mostly falling on Fri morning. Temperatures will be below freezing (max -1°C on Sat afternoon, min -6°C on Fri afternoon). Winds decreasing (strong winds from the WNW on Fri afternoon, calm by Sat afternoon). | |||||||||||||||||
Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  | | |  |  | | | | | | | | | |
clear | clear | clear | cloudy | clear | some clouds | cloudy | cloudy | light snow | light snow | light snow | some clouds | clear | cloudy | some clouds | cloudy | cloudy | some clouds | |
Cloud base (m) | 1700 | 1800 | 1650 | 1750 | 7650 | 4850 | 2700 | 1600 | 1600 | 1600 | 1600 | 5950 | 2850 | 3400 | 2650 | 2250 | ||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | 3 | 3 | 2 | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
max °C | 4 | 4 | 1 | 1 | 2 | 2 | 3 | 3 | 2 | -2 | -5 | -3 | -2 | -1 | -2 | -1 | -1 | -2 |
min °C | 4 | 4 | 0 | 0 | 2 | 2 | 2 | 2 | -2 | -3 | -6 | -6 | -3 | -1 | -3 | -2 | -1 | -2 |
chill °C | 0 | 0 | -6 | -5 | -3 | -3 | -3 | -2 | -9 | -8 | -16 | -15 | -5 | -3 | -5 | -5 | -4 | -5 |
Freezing level m | 3450 | 3250 | 2700 | 2800 | 2900 | 3200 | 2950 | 3000 | 2550 | 2200 | 1850 | 1450 | 2400 | 2550 | 2200 | 2500 | 2550 | 2150 |
 | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — |
 | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:54 | — | — | 6:52 | — | — | 6:51 | — |
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Fortress Mountain Weather (Days 0-3):
The weather forecast for Fortress Mountain is: A dusting of new snow. Freeze-thaw conditions (max 4°C on Tue morning, min -2°C on Thu night). Winds increasing (light winds from the S on Thu morning, strong winds from the SSW by Thu night).
Fortress Mountain Weather (Days 3-6):
A light covering of new snow mostly falling on Fri morning. Temperatures will be below freezing (max -1°C on Sat afternoon, min -6°C on Fri afternoon). Winds decreasing (strong winds from the WNW on Fri afternoon, calm by Sat 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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SHIP9301 |
* 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.