Last updated: June 24, 2025
In September, the average temperature in Lake Mary, United States is a warm 27°C (81°F). Expect a range from a comfortable 18°C (64°F) to a sizzling 34°C (94°F). During this month, 165 mm (6.5 in) of precipitation usually falls over 20 days, contributing to an average humidity level of 83%. Whether you're exploring or relaxing, be prepared for a humid and occasionally rainy climate!
In September in Lake Mary, the average temperature is 27°C (81°F). Maximum temperatures can reach 34°C (94°F), while minimums can drop to as low as 18°C (64°F). This mild climate makes Lake Mary an ideal destination for outdoor activities and exploration.
In Lake Mary in September, the precipitation amount is 165 mm (6.5 in) over the course of 20 days.
In Lake Mary in September humidity is 83%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket enveloping you, making sightseeing and outdoor activities feel more exhausting and requiring frequent breaks to relax in the shade or cool off.
In Lake Mary in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Lake Mary.
UV Risk Categories
Weather in Lake Mary varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Lake Mary, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 16°C (61°F) | 37 mm (1.5 inches) | 83% | moderate |
| February Weather | 19°C (66°F) | 56 mm (2.2 inches) | 80% | very high |
| March Weather | 20°C (68°F) | 25 mm (1.0 inches) | 75% | very high |
| April Weather | 22°C (72°F) | 75 mm (3.0 inches) | 70% | extreme |
| May Weather | 25°C (77°F) | 107 mm (4.2 inches) | 68% | extreme |
| June Weather | 27°C (81°F) | 199 mm (7.9 inches) | 75% | extreme |
| July Weather | 27°C (82°F) | 216 mm (8.5 inches) | 79% | extreme |
| August Weather | 28°C (82°F) | 222 mm (8.7 inches) | 81% | extreme |
| September Weather | 27°C (81°F) | 165 mm (6.5 inches) | 83% | extreme |
| October Weather | 25°C (77°F) | 82 mm (3.2 inches) | 81% | very high |
| November Weather | 20°C (69°F) | 44 mm (1.7 inches) | 82% | high |
| December Weather | 17°C (63°F) | 62 mm (2.4 inches) | 84% | moderate |