Last updated: June 24, 2025
In September, the average temperature in Storm Lake, United States is a pleasant 19°C (67°F). Expect minimum temperatures to dip as low as 3°C (38°F), while maximums can soar to 34°C (93°F). Rain lovers will appreciate the 105 mm (4.1 in) of precipitation spread over 9 days, accompanied by an average humidity of 75%. Enjoy the diverse climate this month has to offer!
In September in Storm Lake, the average temperature is 19°C (67°F), with maximums reaching 34°C (93°F) and minimums dropping as low as 3°C (38°F). This climate makes it an ideal destination for travelers seeking a mix of warm days and cooler evenings.
In Storm Lake in September, the total precipitation amount reaches 105 mm (4.1 in) over the course of 9 days.
In Storm Lake in September humidity is 75%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace, making travel invigorating yet slightly sticky, as you navigate through the vibrant streets or scenic landscapes.
In Storm Lake 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 Storm Lake.
UV Risk Categories
Weather in Storm Lake varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Storm Lake, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -6°C (21°F) | 26 mm (1.0 inches) | 80% | moderate |
February Weather | -6°C (21°F) | 40 mm (1.6 inches) | 84% | moderate |
March Weather | 3°C (37°F) | 71 mm (2.8 inches) | 75% | moderate |
April Weather | 8°C (46°F) | 88 mm (3.5 inches) | 79% | very high |
May Weather | 16°C (60°F) | 140 mm (5.5 inches) | 74% | very high |
June Weather | 23°C (73°F) | 127 mm (5.0 inches) | 81% | extreme |
July Weather | 24°C (76°F) | 66 mm (2.6 inches) | 82% | very high |
August Weather | 22°C (72°F) | 108 mm (4.2 inches) | 80% | very high |
September Weather | 19°C (67°F) | 105 mm (4.1 inches) | 75% | very high |
October Weather | 10°C (50°F) | 96 mm (3.8 inches) | 77% | moderate |
November Weather | 2°C (36°F) | 34 mm (1.3 inches) | 85% | moderate |
December Weather | -2°C (28°F) | 41 mm (1.6 inches) | 83% | moderate |