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September Weather in Grandfield, United States

Last updated: June 24, 2025

In September, the average temperature in Grandfield, United States is a pleasant 25°C (78°F). While you might experience a refreshing low of 8°C (47°F), it can soar to a blistering 39°C (103°F) on hotter days. Expect approximately 94 mm (3.7 in) of rain spread across 7 days, contributing to an average humidity of 64%. Prepare accordingly to enjoy all that this vibrant locale has to offer!

September Temperature in Grandfield

In September in Grandfield, the average temperature is 25°C (78°F). Maximum can reach 39°C (103°F) and minimum can be as low as 8°C (47°F). This makes Grandfield an ideal destination for travelers seeking warm weather, but it's important to be prepared for both hot days and cool nights.

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

The chart illustrates September temperature patterns in Grandfield, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grandfield, September typically has an average temperature of 25°C (78°F), with highs reaching up to 39°C (103°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec424457637382868477645347
Data source: Temperature data for Grandfield 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 Grandfield

In Grandfield in September, the precipitation amount is 94 mm (3.7 in) over a span of 7 days.

September Precipitation Trends in Grandfield

The chart displays monthly precipitation patterns in Grandfield, 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 Grandfield, September typically receives around 94 mm (3.7 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec38387710113248264794772736
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Grandfield

In Grandfield in September, humidity is 64%. With an average temperature of 25°C (78°F), this humidity feels like a warm blanket wrapping around you, making it feel much warmer than the actual temperature, which can be a bit stifling for traveling but also adds a lush, tropical feel to the atmosphere.

September Average Humidity in Grandfield

This chart illustrates the average monthly humidity levels in Grandfield, 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 Grandfield is approximately 64%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%76%70%72%82%82%80%72%64%71%81%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Grandfield

In Grandfield in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Grandfield.

Maximum UV Index Levels in Grandfield for September

The chart shows the monthly maximum UV Index (UVI) for Grandfield 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 Grandfield typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111121110754
Data source: Grandfield 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 Grandfield Compares to Other Months

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

This table compares monthly weather conditions in Grandfield, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)38 mm (1.5 inches)76%moderate
February Weather7°C (44°F)38 mm (1.5 inches)76%high
March Weather14°C (57°F)77 mm (3.0 inches)70%very high
April Weather17°C (63°F)101 mm (4.0 inches)72%very high
May Weather23°C (73°F)132 mm (5.2 inches)82%extreme
June Weather28°C (82°F)48 mm (1.9 inches)82%extreme
July Weather30°C (86°F)26 mm (1.0 inches)80%extreme
August Weather29°C (85°F)47 mm (1.8 inches)72%extreme
September Weather25°C (78°F)94 mm (3.7 inches)64%very high
October Weather18°C (65°F)77 mm (3.0 inches)71%high
November Weather12°C (53°F)27 mm (1.1 inches)81%moderate
December Weather8°C (47°F)36 mm (1.4 inches)84%moderate

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