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September Weather in Barnum, United States

Last updated: June 24, 2025

In September, the average temperature in Barnum, United States hovers around 15°C (60°F). Prepare for a range, as it can dip to a chilly 0°C (33°F) or soar to a warm 31°C (88°F). Throughout the month, expect approximately 102 mm (4.0 in) of precipitation over about 10 days, with an average humidity level of 77% adding a touch of dampness to the air.

September Temperature in Barnum

In September in Barnum, the average temperature is 15°C (60°F). Maximum temperatures can reach 31°C (88°F), while minimums can drop to as low as 0°C (33°F). This makes Barnum an ideal destination for travelers who enjoy mild weather with the possibility of warm days and chilly nights.

September Weather in Barnum: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Barnum, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Barnum, September typically has an average temperature of 15°C (60°F), with highs reaching up to 31°C (88°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec121329405566716760452919
Data source: Temperature data for Barnum generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Barnum

In Barnum in September, the total precipitation amount is 102 mm (4.0 in) falling over the course of 10 days.

September Precipitation Trends in Barnum

The chart displays monthly precipitation patterns in Barnum, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Barnum, September typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec2027407180911131071021153957
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Barnum

In Barnum in September, humidity is 77%. With an average temperature of 15°C (60°F), this humidity feels like you're wading through a warm, heavy blanket, making travel feel more exhausting and sticky than usual.

September Average Humidity in Barnum

This chart illustrates the average monthly humidity levels in Barnum, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Barnum is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%93%88%83%76%76%76%77%77%82%88%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Barnum

In Barnum 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 Barnum.

Maximum UV Index Levels in Barnum for September

The chart shows the monthly maximum UV Index (UVI) for Barnum in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Barnum typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457810987532
Data source: Barnum September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Barnum Compares to Other Months

Weather in Barnum varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Barnum, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Barnum, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-11°C (13°F)20 mm (0.8 inches)92%low
February Weather-11°C (13°F)27 mm (1.1 inches)93%moderate
March Weather-2°C (29°F)40 mm (1.6 inches)88%moderate
April Weather4°C (40°F)71 mm (2.8 inches)83%high
May Weather13°C (55°F)80 mm (3.2 inches)76%very high
June Weather19°C (67°F)91 mm (3.6 inches)76%very high
July Weather21°C (71°F)113 mm (4.5 inches)76%very high
August Weather19°C (67°F)107 mm (4.2 inches)77%very high
September Weather15°C (60°F)102 mm (4.0 inches)77%high
October Weather7°C (45°F)115 mm (4.5 inches)82%moderate
November Weather-2°C (30°F)39 mm (1.5 inches)87%moderate
December Weather-7°C (20°F)56 mm (2.2 inches)89%low

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