Last updated: June 24, 2025
In September, the average temperature in Liberty, United States is a pleasant 18°C (65°F). Visitors can expect a range from a brisk 3°C (38°F) to a warm 33°C (92°F) throughout the month. However, be prepared for some rain, as 120 mm (4.7 in) of precipitation may fall over 10 days. The air tends to be quite humid, with an average humidity level of 74%, making this a time to enjoy both the warmth and the refreshing moisture of the season.
In September in Liberty, the average temperature is 18°C (65°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop as low as 3°C (38°F). This diverse temperature range makes Liberty an interesting destination for travelers seeking both warm days and cooler nights.
In Liberty in September, the precipitation amount is 120 mm (4.7 in) spread over a duration of 10 days.
In Liberty in September humidity is 74%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace that can make even short walks feel laborious, leading travelers to seek shade and refreshment more often.
In Liberty in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Liberty.
UV Risk Categories
Weather in Liberty varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Liberty, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -7°C (20°F) | 39 mm (1.5 inches) | 84% | low |
| February Weather | -6°C (22°F) | 54 mm (2.1 inches) | 85% | moderate |
| March Weather | 2°C (36°F) | 59 mm (2.3 inches) | 84% | moderate |
| April Weather | 7°C (46°F) | 87 mm (3.4 inches) | 83% | very high |
| May Weather | 15°C (59°F) | 135 mm (5.3 inches) | 75% | very high |
| June Weather | 21°C (70°F) | 125 mm (4.9 inches) | 79% | very high |
| July Weather | 23°C (74°F) | 103 mm (4.1 inches) | 75% | very high |
| August Weather | 21°C (71°F) | 101 mm (4.0 inches) | 69% | very high |
| September Weather | 18°C (65°F) | 120 mm (4.7 inches) | 74% | very high |
| October Weather | 10°C (50°F) | 120 mm (4.7 inches) | 79% | moderate |
| November Weather | 2°C (35°F) | 52 mm (2.1 inches) | 88% | moderate |
| December Weather | -2°C (28°F) | 44 mm (1.7 inches) | 82% | low |