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September Weather in Chatfield, United States

Last updated: June 24, 2025

In Chatfield, United States, the average temperature in September hovers around 18°C (64°F). Expect a temperature range that dips to a chilly 1°C (34°F) at its lowest, and can rise to a warm 32°C (90°F) at its peak. During this month, precipitation averages 123 mm (4.8 in) across 9 days, contributing to an average humidity level of 74%, making it a warm and somewhat humid period.

September Temperature in Chatfield

In September in Chatfield, the average temperature is 18°C (64°F). Maximum temperatures can reach up to 32°C (90°F), while minimum temperatures can drop as low as 1°C (34°F). Be prepared for a wide range of weather conditions if you plan to travel during this time.

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

The chart illustrates September temperature patterns in Chatfield, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chatfield, September typically has an average temperature of 18°C (64°F), with highs reaching up to 32°C (90°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec181834445870737064483425
Data source: Temperature data for Chatfield 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 Chatfield

In Chatfield in September, the precipitation amount is 123 mm (4.8 in) over the course of 9 days.

September Precipitation Trends in Chatfield

The chart displays monthly precipitation patterns in Chatfield, 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 Chatfield, September typically receives around 123 mm (4.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec36486083146137991061231225141
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Chatfield

In Chatfield in September humidity is 74%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making it ideal for leisurely strolls but potentially uncomfortable for extended outdoor activities.

September Average Humidity in Chatfield

This chart illustrates the average monthly humidity levels in Chatfield, 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 Chatfield is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%84%83%75%79%75%69%74%79%88%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Chatfield

In Chatfield 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 Chatfield.

Maximum UV Index Levels in Chatfield for September

The chart shows the monthly maximum UV Index (UVI) for Chatfield 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 Chatfield typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35589101098532
Data source: Chatfield 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 Chatfield Compares to Other Months

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

This table compares monthly weather conditions in Chatfield, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)36 mm (1.4 inches)84%moderate
February Weather-8°C (19°F)48 mm (1.9 inches)85%moderate
March Weather1°C (34°F)60 mm (2.4 inches)84%moderate
April Weather7°C (44°F)83 mm (3.3 inches)83%very high
May Weather15°C (59°F)146 mm (5.8 inches)75%very high
June Weather21°C (71°F)137 mm (5.4 inches)79%very high
July Weather23°C (74°F)99 mm (3.9 inches)75%very high
August Weather21°C (70°F)106 mm (4.2 inches)69%very high
September Weather18°C (64°F)123 mm (4.8 inches)74%very high
October Weather9°C (48°F)122 mm (4.8 inches)79%moderate
November Weather1°C (34°F)51 mm (2.0 inches)88%moderate
December Weather-4°C (26°F)40 mm (1.6 inches)82%low

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