September Weather
Climate patterns and historical data for Altamonte Springs
Average Temperature
80°F
Typical conditions for September in Altamonte Springs
87°F
Avg High
75°F
Avg Low
Cold
Mild
Warm
Hot
Precipitation
19.31 inches
monthly average
25.4 days with rain
Humidity
74%
average humidity
Dry
Comfortable
Humid
What to Expect
- Temperatures range from 75°F to 87°F
- Frequent rain showers—pack an umbrella
- Light, breathable clothing ideal
Climate Data Source
Based on 2021 - 2025
historical data
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Last updated
January 2026