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September Weather in Stafford, United States

Last updated: June 24, 2025

In Stafford, United States, the average temperature in September hovers around 19°C (66°F). While you might experience a cool minimum of 3°C (38°F), the maximum can soar to a warm 34°C (94°F). Expect an average precipitation of 97 mm (3.8 in) spread over approximately 9 days, coupled with a humidity level of 75%.

September Temperature in Stafford

In September in Stafford, the average temperature is 19°C (66°F), with maximums reaching 34°C (94°F) and minimums dropping as low as 3°C (38°F). This diverse temperature range makes Stafford an ideal destination for travelers seeking both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Stafford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stafford, September typically has an average temperature of 19°C (66°F), with highs reaching up to 34°C (94°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec293237485968747366554133
Data source: Temperature data for Stafford 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 Stafford

In Stafford in September, the total precipitation amount reaches 97 mm (3.8 in) over the course of 9 days.

September Precipitation Trends in Stafford

The chart displays monthly precipitation patterns in Stafford, 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 Stafford, September typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec69888712510785149959713896124
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Stafford

In Stafford in September humidity is 75%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making it slightly uncomfortable for traveling as you navigate through the thick, muggy air.

September Average Humidity in Stafford

This chart illustrates the average monthly humidity levels in Stafford, 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 Stafford is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%82%79%75%78%76%76%76%75%80%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Stafford

In Stafford 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 Stafford.

Maximum UV Index Levels in Stafford for September

The chart shows the monthly maximum UV Index (UVI) for Stafford 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 Stafford typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568910998642
Data source: Stafford 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 Stafford Compares to Other Months

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

This table compares monthly weather conditions in Stafford, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)69 mm (2.7 inches)84%moderate
February Weather0°C (32°F)88 mm (3.5 inches)84%moderate
March Weather3°C (38°F)87 mm (3.4 inches)82%high
April Weather9°C (48°F)125 mm (4.9 inches)79%very high
May Weather15°C (59°F)107 mm (4.2 inches)75%very high
June Weather20°C (69°F)85 mm (3.3 inches)78%very high
July Weather23°C (74°F)149 mm (5.9 inches)76%very high
August Weather23°C (73°F)95 mm (3.7 inches)76%very high
September Weather19°C (66°F)97 mm (3.8 inches)75%very high
October Weather13°C (55°F)138 mm (5.4 inches)75%high
November Weather5°C (42°F)96 mm (3.8 inches)80%moderate
December Weather1°C (33°F)124 mm (4.9 inches)80%low

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