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September Weather in Chadron, United States

Last updated: June 24, 2025

In September, the average temperature in Chadron, United States hovers around 18°C (65°F), though it can dip as low as 1°C (34°F) or soar up to 39°C (102°F). Visitors can expect 39 mm (1.5 in) of precipitation spread over 6 days, contributing to an average humidity of 76%. Be prepared for a month that could swing between refreshing coolness and sweltering heat!

September Temperature in Chadron

In September in Chadron, the average temperature is 18°C (65°F). Maximum temperatures can reach 39°C (102°F) while minimums can dip as low as 1°C (34°F). Be prepared for a wide range of temperatures, making it essential to pack accordingly for your travels.

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

The chart illustrates September temperature patterns in Chadron, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chadron, September typically has an average temperature of 18°C (65°F), with highs reaching up to 39°C (102°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec282538445570757265473931
Data source: Temperature data for Chadron 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 Chadron

In Chadron in September, the precipitation amount is 39 mm (1.5 in), occurring over the course of 6 days.

September Precipitation Trends in Chadron

The chart displays monthly precipitation patterns in Chadron, 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 Chadron, September typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec1629626710160473939492026
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Chadron

In Chadron in September, humidity is 76%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace, making travel a little sticky but enjoyable, as long as you stay hydrated and take breaks in the shade.

September Average Humidity in Chadron

This chart illustrates the average monthly humidity levels in Chadron, 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 Chadron is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%78%64%66%74%84%85%85%76%71%73%75%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Chadron

In Chadron 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 Chadron.

Maximum UV Index Levels in Chadron for September

The chart shows the monthly maximum UV Index (UVI) for Chadron 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 Chadron typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568101111108643
Data source: Chadron 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 Chadron Compares to Other Months

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

This table compares monthly weather conditions in Chadron, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)15 mm (0.6 inches)73%moderate
February Weather-4°C (26°F)29 mm (1.1 inches)78%moderate
March Weather3°C (38°F)62 mm (2.4 inches)64%high
April Weather7°C (44°F)67 mm (2.6 inches)66%very high
May Weather13°C (55°F)101 mm (4.0 inches)74%very high
June Weather21°C (70°F)60 mm (2.3 inches)84%extreme
July Weather24°C (76°F)47 mm (1.8 inches)85%extreme
August Weather22°C (73°F)39 mm (1.5 inches)85%very high
September Weather18°C (65°F)39 mm (1.5 inches)76%very high
October Weather8°C (47°F)49 mm (1.9 inches)71%high
November Weather4°C (40°F)20 mm (0.8 inches)73%moderate
December Weather0°C (32°F)26 mm (1.0 inches)75%moderate

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