Last updated: June 24, 2025
In September, the average temperature in Council Bluffs, United States hovers around 21°C (69°F). Visitors can expect a range that dips to a chilly 4°C (40°F) and peaks at a warm 36°C (96°F). With an average humidity of 75% and 86 mm (3.4 in) of precipitation spread over 9 days, be prepared for a mix of weather during your stay.
In September in Council Bluffs, the average temperature is 21°C (69°F). Maximums can reach 36°C (96°F), while minimums can drop as low as 4°C (40°F). This wide range of temperatures makes Council Bluffs an ideal destination for travelers seeking both warm and cool experiences during their visit.
In Council Bluffs in September, the precipitation amount is 86 mm (3.4 in), falling over the course of 9 days.
In Council Bluffs in September, humidity is 75%. With an average temperature of 21°C (69°F), this humidity feels like a warm, sticky embrace that can make even a short walk feel exhausting for travelers, often leading to a longing for refreshing breezes or air-conditioned retreats.
In Council Bluffs 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 Council Bluffs.
UV Risk Categories
Weather in Council Bluffs varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Council Bluffs, 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) | 33 mm (1.3 inches) | 80% | moderate |
March Weather | 5°C (41°F) | 95 mm (3.7 inches) | 73% | high |
April Weather | 10°C (50°F) | 59 mm (2.3 inches) | 74% | very high |
May Weather | 17°C (63°F) | 156 mm (6.1 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 (3.0 inches) | 83% | very high |
August Weather | 23°C (75°F) | 105 mm (4.1 inches) | 80% | very high |
September Weather | 21°C (69°F) | 86 mm (3.4 inches) | 75% | very high |
October Weather | 11°C (53°F) | 135 mm (5.3 inches) | 75% | high |
November Weather | 4°C (40°F) | 32 mm (1.3 inches) | 82% | moderate |
December Weather | -1°C (31°F) | 36 mm (1.4 inches) | 83% | low |