Last updated: June 24, 2025
In September, the average temperature in Birch Run, United States is a pleasant 18°C (65°F). However, be prepared for a range, as temperatures can dip as low as 1°C (34°F) and soar up to 34°C (94°F). Expect 93 mm (3.7 in) of precipitation over approximately 11 days, contributing to an average humidity of 80%.
In September in Birch Run, the average temperature is 18°C (65°F), with maximums reaching up to 34°C (94°F) and minimums dipping as low as 1°C (34°F). Be prepared for a range of temperatures during your travels, bringing both lightweight clothing for the heat and warmer layers for the cooler moments.
In Birch Run in September, the precipitation amount is 93 mm (3.7 in) over the course of 11 days, indicating that rain is expected to be fairly frequent during that time.
In Birch Run in September, humidity is 80%. With an average temperature of 18°C (65°F), this humidity feels like wandering through a warm, damp blanket, making every step slightly heavy and resulting in a constant sheen of sweat, which can be both refreshing and exhausting for travelers.
In Birch Run in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Birch Run.
UV Risk Categories
Weather in Birch Run varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Birch Run, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -4°C (25°F) | 60 mm (2.4 inches) | 88% | low |
February Weather | -3°C (27°F) | 63 mm (2.5 inches) | 87% | moderate |
March Weather | 2°C (36°F) | 62 mm (2.5 inches) | 85% | moderate |
April Weather | 8°C (46°F) | 91 mm (3.6 inches) | 86% | very high |
May Weather | 15°C (59°F) | 104 mm (4.1 inches) | 80% | very high |
June Weather | 21°C (69°F) | 109 mm (4.3 inches) | 80% | very high |
July Weather | 23°C (74°F) | 69 mm (2.7 inches) | 80% | very high |
August Weather | 22°C (72°F) | 84 mm (3.3 inches) | 80% | very high |
September Weather | 18°C (65°F) | 93 mm (3.7 inches) | 80% | high |
October Weather | 11°C (53°F) | 108 mm (4.3 inches) | 84% | moderate |
November Weather | 3°C (38°F) | 63 mm (2.5 inches) | 89% | moderate |
December Weather | 0°C (32°F) | 55 mm (2.2 inches) | 86% | low |