Aleutian Islands
United States · North America
Year-round range: 33°F to 50°F
September
Decent, with some tradeoffs
Expect the month to feel wet and cloudy overall; any bright breaks do not cancel out the frequent rain.
Expect warm beach weather, but frequent cloud and showers make the month feel more mixed.
Your monthly fit score
Comfort fit by month.
Climate details▼
Temperature
Average highs and lows.
September is cold — warm layers are essential.
Shaded band = typical daily swing (P10 of night lows to P90 of afternoon peaks) — spans wider than avg high/low lines because it captures day-to-day variation.
| = SepPrecipitation
Monthly precipitation, wet-day risk, and snow signal where relevant.
September is one of the wetter months — pack rain gear.
Sunshine
Average hours of bright sun per day.
Expect the month to feel wet and cloudy overall; any bright breaks do not cancel out the frequent rain.
Air comfort by month
Humidity and heat feel by month.
Dry but cold: humidity is comfortable, but this month may feel cold. Check the temperature and sunshine sections for the full picture.
Time-of-day patterns
Typical hourly rhythm for September.
Temperature by hour
Temperature by hour and month
Typical temperature through the day across the year (1996-2025 normals, local time). Shaded cells are nighttime.
In September, afternoons reach about 48° and nights settle near 48°.
▶Full month-by-month data
| Month | High °F | Low °F | Rain days | Rain (in) | Sun h/day | Humidity | Sea °F |
|---|---|---|---|---|---|---|---|
| Jan | 36°F | 33°F | 17 | 3.8in | 2.2h | 76.71428571428571% | 39°F |
| Feb | 36°F | 33°F | 16 | 3.8in | 2.8h | 77.99999999999999% | 38°F |
| Mar | 37°F | 33°F | 15 | 3.6in | 3.3h | 77.71428571428571% | 38°F |
| Apr | 39°F | 35°F | 14 | 2.8in | 4.1h | 80% | 39°F |
| May | 41°F | 38°F | 10 | 2.4in | 3.6h | 84.99999999999999% | 41°F |
| Jun | 44°F | 42°F | 9 | 2.1in | 2.3h | 91.99999999999999% | 44°F |
| Jul | 48°F | 45°F | 12 | 3.3in | 1.3h | 95.14285714285714% | 47°F |
| Aug | 50°F | 48°F | 12 | 3.7in | 2h | 94% | 50°F |
| Sep | 49°F | 46°F | 11 | 3.4in | 3.7h | 88.14285714285714% | 49°F |
| Oct | 45°F | 42°F | 14 | 4.0in | 3.9h | 81% | 47°F |
| Nov | 42°F | 38°F | 17 | 4.2in | 2.9h | 78.14285714285714% | 43°F |
| Dec | 38°F | 34°F | 19 | 4.6in | 2.4h | 77% | 41°F |
Similar destinations
Planning notes
Expect some rain.