Last updated: June 24, 2025
In September, the average temperature in Omaha, United States hovers around 21°C (70°F), with variations that can dip to 5°C (41°F) at night and soar up to 36°C (97°F) during the day. Expect 84 mm (3.3 in) of rain spread over approximately 9 days, contributing to a 75% average humidity.
In September in Omaha, the average temperature is 21°C (70°F). Maximums can reach 36°C (97°F), and minimums can dip as low as 5°C (41°F). It's a great time to visit for those who enjoy mild weather with the possibility of warm days and cool evenings.
In Omaha in September, the precipitation amount is 84 mm (3.3 in) spread over 9 days.
In Omaha in September, humidity is 75%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that makes exploring the area feel slightly sticky, requiring travelers to stay hydrated and take occasional breaks in the shade to fully enjoy their adventures.
In Omaha 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 Omaha.
UV Risk Categories
Weather in Omaha varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Omaha, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -4°C (25°F) | 33 mm (1.3 inches) | 76% | moderate |
February Weather | -4°C (26°F) | 32 mm (1.3 inches) | 80% | moderate |
March Weather | 5°C (41°F) | 97 mm (3.8 inches) | 73% | high |
April Weather | 10°C (50°F) | 57 mm (2.2 inches) | 74% | very high |
May Weather | 17°C (63°F) | 152 mm (6.0 inches) | 78% | very high |
June Weather | 24°C (76°F) | 133 mm (5.2 inches) | 82% | very high |
July Weather | 25°C (78°F) | 75 mm (2.9 inches) | 83% | very high |
August Weather | 24°C (75°F) | 103 mm (4.1 inches) | 80% | very high |
September Weather | 21°C (70°F) | 84 mm (3.3 inches) | 75% | very high |
October Weather | 11°C (53°F) | 126 mm (4.9 inches) | 75% | high |
November Weather | 4°C (40°F) | 31 mm (1.2 inches) | 82% | moderate |
December Weather | 0°C (31°F) | 38 mm (1.5 inches) | 83% | low |