Last updated: June 24, 2025
In Fairmount Heights, United States, the average temperature in September settles at a pleasant 22°C (72°F). However, don't be surprised by the extremes—temperatures can dip to a cool 5°C (42°F) or soar up to a sweltering 36°C (97°F). Expect an average of 95 mm (3.8 in) of precipitation over 11 days, accompanied by a noteworthy average humidity of 75%.
In September in Fairmount Heights, the average temperature is 22°C (72°F), with maximums reaching 36°C (97°F) and minimums dipping as low as 5°C (42°F). This range makes it a perfect time for travelers to enjoy comfortable outdoor activities while being prepared for warm days and cooler nights.
In Fairmount Heights in September, the precipitation amount is 95 mm (3.8 in) spread over 11 days.
In Fairmount Heights in September, humidity is 75%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making outdoor activities enjoyable yet requiring travelers to stay hydrated and take breaks in shaded areas.
In Fairmount Heights 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 Fairmount Heights.
UV Risk Categories
Weather in Fairmount Heights varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Fairmount Heights, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (37°F) | 61 mm (2.4 inches) | 84% | moderate |
| February Weather | 5°C (41°F) | 98 mm (3.9 inches) | 83% | moderate |
| March Weather | 8°C (46°F) | 87 mm (3.4 inches) | 83% | high |
| April Weather | 14°C (57°F) | 100 mm (4.0 inches) | 81% | very high |
| May Weather | 19°C (66°F) | 127 mm (5.0 inches) | 78% | very high |
| June Weather | 24°C (75°F) | 118 mm (4.7 inches) | 79% | very high |
| July Weather | 27°C (81°F) | 157 mm (6.2 inches) | 74% | very high |
| August Weather | 25°C (77°F) | 140 mm (5.5 inches) | 72% | very high |
| September Weather | 22°C (72°F) | 95 mm (3.8 inches) | 75% | very high |
| October Weather | 17°C (62°F) | 104 mm (4.1 inches) | 81% | high |
| November Weather | 8°C (47°F) | 81 mm (3.2 inches) | 85% | moderate |
| December Weather | 5°C (41°F) | 93 mm (3.7 inches) | 84% | moderate |