Appenzell
Switzerland · Europe
Year-round range: 22°F to 70°F
September
Good time to visit
Your monthly fit score
Comfort fit by month.
Climate details▼
Temperature
Average highs and lows.
September is cool — pack a layer for evenings and overcast days.
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.
September has decent sunshine — a mix of sun and cloud.
Air comfort by month
Humidity and heat feel by month.
September is mostly comfortable — low heat and humidity pressure.
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 64° and nights settle near 50°.
▶Full month-by-month data
| Month | High °F | Low °F | Rain days | Rain (in) | Sun h/day | Humidity |
|---|---|---|---|---|---|---|
| Jan | 37°F | 22°F | 12 | 4.4in | 4h | 78.85714285714285% |
| Feb | 40°F | 24°F | 12 | 4.0in | 4.8h | 76.85714285714286% |
| Mar | 46°F | 29°F | 15 | 4.9in | 5.6h | 75% |
| Apr | 52°F | 34°F | 15 | 5.0in | 6.3h | 74.28571428571428% |
| May | 61°F | 43°F | 20 | 7.5in | 6.5h | 76.57142857142857% |
| Jun | 68°F | 51°F | 19 | 8.4in | 7.5h | 77.14285714285714% |
| Jul | 70°F | 54°F | 19 | 8.5in | 7.8h | 77.85714285714285% |
| Aug | 70°F | 54°F | 18 | 8.6in | 7.2h | 79.71428571428571% |
| Sep | 64°F | 48°F | 15 | 6.1in | 5.8h | 81.85714285714285% |
| Oct | 57°F | 42°F | 12 | 4.7in | 4.6h | 81.85714285714285% |
| Nov | 46°F | 32°F | 13 | 4.9in | 3.7h | 82.71428571428571% |
| Dec | 38°F | 25°F | 14 | 4.9in | 3.6h | 81.14285714285714% |
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Planning notes
Expect some rain.