Last updated: June 24, 2025
In September, the average temperature in Helena-West Helena, United States is a pleasant 25°C (77°F). You can expect temperatures to range from a minimum of 12°C (53°F) to a scorching maximum of 36°C (98°F). With an average humidity of 71% and approximately 92 mm (3.6 in) of precipitation spread over 7 days, it's a month that balances warmth with a touch of moisture.
In September in Helena-West Helena, the average temperature is 25°C (77°F). Maximum temperatures can reach 36°C (98°F), while minimums can drop as low as 12°C (53°F). Be sure to pack accordingly to enjoy the warm days and cooler nights!
In Helena-West Helena in September, the precipitation amount is 92 mm (3.6 in) over the course of 7 days.
In Helena-West Helena in September humidity is 71%. With an average temperature of 25°C (77°F), this humidity feels like a warm embrace, making outdoor exploration a bit sticky but still enjoyable, especially if you take breaks in shaded areas and stay hydrated.
In Helena-West Helena in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Helena-West Helena.
UV Risk Categories
Weather in Helena-West Helena varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Helena-West Helena, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 7°C (44°F) | 107 mm (4.2 inches) | 84% | moderate |
| February Weather | 9°C (48°F) | 185 mm (7.3 inches) | 83% | high |
| March Weather | 14°C (57°F) | 172 mm (6.8 inches) | 81% | very high |
| April Weather | 17°C (62°F) | 146 mm (5.7 inches) | 81% | very high |
| May Weather | 23°C (73°F) | 138 mm (5.5 inches) | 83% | extreme |
| June Weather | 26°C (79°F) | 133 mm (5.2 inches) | 83% | extreme |
| July Weather | 28°C (82°F) | 124 mm (4.9 inches) | 81% | extreme |
| August Weather | 27°C (81°F) | 114 mm (4.5 inches) | 74% | very high |
| September Weather | 25°C (77°F) | 92 mm (3.6 inches) | 71% | very high |
| October Weather | 19°C (66°F) | 111 mm (4.4 inches) | 76% | high |
| November Weather | 11°C (52°F) | 82 mm (3.2 inches) | 84% | high |
| December Weather | 9°C (49°F) | 144 mm (5.7 inches) | 88% | moderate |