Algona
United States · North America
Year-round range: 11°F to 82°F
September
Excellent conditions this month
Your monthly fit score
Comfort fit by month.
Climate details▼
Temperature
Average highs and lows.
September has comfortable temperatures — not too hot, not too cold.
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 has moderate rainfall — occasional showers but mostly manageable.
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.
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 74° and nights settle near 56°.
▶Full month-by-month data
| Month | High °F | Low °F | Rain days | Rain (in) | Sun h/day | Humidity |
|---|---|---|---|---|---|---|
| Jan | 26°F | 11°F | 6 | 1.1in | 4.2h | 74% |
| Feb | 31°F | 14°F | 5 | 1.2in | 5h | 70.57142857142857% |
| Mar | 46°F | 27°F | 8 | 2.5in | 5.8h | 64.14285714285714% |
| Apr | 59°F | 38°F | 11 | 4.0in | 6.5h | 60% |
| May | 70°F | 51°F | 13 | 5.0in | 7.4h | 62% |
| Jun | 79°F | 61°F | 12 | 5.3in | 8.8h | 67% |
| Jul | 82°F | 65°F | 9 | 3.9in | 10.1h | 72% |
| Aug | 80°F | 63°F | 9 | 4.0in | 9.2h | 73.14285714285714% |
| Sep | 75°F | 56°F | 8 | 3.1in | 8.6h | 65.85714285714286% |
| Oct | 62°F | 44°F | 7 | 2.5in | 6.5h | 61.42857142857142% |
| Nov | 45°F | 30°F | 6 | 1.8in | 5h | 66.71428571428571% |
| Dec | 32°F | 17°F | 6 | 1.4in | 4.1h | 74% |