Aurora
United States · North America
Year-round range: 18°F to 88°F
September
Excellent conditions this month
Your monthly fit score
Comfort fit by month.
Climate details▼
Temperature
Average highs and lows.
September is warm and sunny — good beach and outdoor weather.
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 driest months — very little rain expected.
Sunshine
Average hours of bright sun per day.
September is one of the sunniest months — great for outdoor plans.
Air comfort by month
Humidity and heat feel by month.
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 77° and nights settle near 53°.
▶Full month-by-month data
| Month | High °F | Low °F | Rain days | Rain (in) | Sun h/day | Humidity |
|---|---|---|---|---|---|---|
| Jan | 43°F | 18°F | 3 | 0.6in | 6.7h | 53.42857142857142% |
| Feb | 46°F | 20°F | 3 | 0.6in | 7.2h | 48.857142857142854% |
| Mar | 55°F | 28°F | 5 | 1.4in | 7.9h | 44.42857142857142% |
| Apr | 63°F | 35°F | 7 | 2.0in | 8.3h | 42.42857142857143% |
| May | 71°F | 45°F | 10 | 2.5in | 8.8h | 45.71428571428571% |
| Jun | 83°F | 55°F | 8 | 1.7in | 10.7h | 40% |
| Jul | 88°F | 61°F | 8 | 1.5in | 10.8h | 38.71428571428571% |
| Aug | 86°F | 60°F | 6 | 1.4in | 10.1h | 40.71428571428571% |
| Sep | 80°F | 53°F | 4 | 1.1in | 9.8h | 38.28571428571428% |
| Oct | 67°F | 40°F | 4 | 1.1in | 8.5h | 42.14285714285714% |
| Nov | 53°F | 28°F | 4 | 0.8in | 7.2h | 46.857142857142854% |
| Dec | 44°F | 21°F | 3 | 0.5in | 6.9h | 50.57142857142857% |