Last updated: June 24, 2025
In September, the average temperature in West Peoria, United States reaches a pleasant 21°C (70°F). Prepare for a range of conditions, as temperatures can dip to a minimum of 6°C (42°F) and soar up to 34°C (94°F). Expect about 74 mm (2.9 in) of precipitation over 7 days, coupled with an average humidity of 80%. Whether you're looking to bask in the warmth or seek shelter from the showers, be ready for an adventurous month!
In September in West Peoria, the average temperature is 21°C (70°F). The maximum can reach 34°C (94°F), while the minimum can be as low as 6°C (42°F). This pleasant temperature range makes West Peoria an ideal destination for travelers looking to enjoy a comfortable climate.
In West Peoria in September, the precipitation amount is 74 mm (2.9 in) over a period of 7 days.
In West Peoria in September humidity is 80%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that can make even short walks feel draining, urging travelers to seek shade or a cool drink frequently.
In West Peoria 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 West Peoria.
UV Risk Categories
Weather in West Peoria varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in West Peoria, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 60 mm (2.4 inches) | 82% | moderate |
| February Weather | -2°C (29°F) | 67 mm (2.6 inches) | 83% | moderate |
| March Weather | 5°C (42°F) | 111 mm (4.4 inches) | 84% | high |
| April Weather | 10°C (51°F) | 115 mm (4.5 inches) | 85% | very high |
| May Weather | 18°C (64°F) | 168 mm (6.6 inches) | 79% | very high |
| June Weather | 23°C (74°F) | 159 mm (6.2 inches) | 82% | extreme |
| July Weather | 25°C (77°F) | 105 mm (4.1 inches) | 80% | very high |
| August Weather | 24°C (75°F) | 73 mm (2.9 inches) | 81% | very high |
| September Weather | 21°C (70°F) | 74 mm (2.9 inches) | 80% | very high |
| October Weather | 13°C (56°F) | 130 mm (5.1 inches) | 82% | high |
| November Weather | 4°C (40°F) | 57 mm (2.3 inches) | 88% | moderate |
| December Weather | 1°C (34°F) | 54 mm (2.1 inches) | 84% | low |