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September Weather in Kirby, United States

Last updated: June 24, 2025

The average temperature in Kirby, United States during September is a pleasant 24°C (76°F). However, be prepared for a temperature range that can dip to a minimum of 9°C (49°F) and soar to a maximum of 37°C (100°F). With an expected precipitation amount of 69 mm (2.7 in) spread over 8 days, the average humidity sits at a comfortable 59%.

September Temperature in Kirby

In September in Kirby, the average temperature is 24°C (76°F), with maximums reaching 37°C (100°F) and minimums dropping to 9°C (49°F). This wide temperature range makes it essential for travelers to pack accordingly, ensuring comfort throughout the day and night.

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

The chart illustrates September temperature patterns in Kirby, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kirby, September typically has an average temperature of 24°C (76°F), with highs reaching up to 37°C (100°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec434656617178818076645248
Data source: Temperature data for Kirby 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 Kirby

In Kirby in September, the precipitation amount is 69 mm (2.7 in) that falls over a period of 8 days.

September Precipitation Trends in Kirby

The chart displays monthly precipitation patterns in Kirby, 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 Kirby, September typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec1021601611931841181051276910178132
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Kirby

In Kirby in September humidity is 59%. With an average temperature of 24°C (76°F), this humidity feels like a comfortable, refreshing embrace, making it ideal for leisurely strolls and outdoor explorations.

September Average Humidity in Kirby

This chart illustrates the average monthly humidity levels in Kirby, 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 Kirby is approximately 59%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%77%78%82%81%75%61%59%69%82%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kirby

In Kirby in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Kirby.

Maximum UV Index Levels in Kirby for September

The chart shows the monthly maximum UV Index (UVI) for Kirby 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 Kirby typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109854
Data source: Kirby 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 Kirby Compares to Other Months

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

This table compares monthly weather conditions in Kirby, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)101 mm (4.0 inches)82%moderate
February Weather8°C (46°F)160 mm (6.3 inches)79%high
March Weather13°C (56°F)161 mm (6.3 inches)77%very high
April Weather16°C (61°F)192 mm (7.6 inches)78%very high
May Weather21°C (71°F)184 mm (7.3 inches)82%extreme
June Weather26°C (78°F)118 mm (4.6 inches)81%extreme
July Weather27°C (81°F)105 mm (4.1 inches)75%extreme
August Weather27°C (80°F)127 mm (5.0 inches)61%very high
September Weather24°C (76°F)69 mm (2.7 inches)59%very high
October Weather18°C (64°F)101 mm (4.0 inches)69%very high
November Weather11°C (52°F)78 mm (3.1 inches)82%moderate
December Weather9°C (48°F)132 mm (5.2 inches)87%moderate

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