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September Weather in Hatfield, United States

Last updated: June 24, 2025

In September, the average temperature in Hatfield, United States is a pleasant 19°C (66°F). However, temperatures can vary widely, dipping to a chilly 3°C (37°F) at night and reaching a warm 34°C (93°F) during the day. Expect about 97 mm (3.8 in) of precipitation spread over 8 days, with an average humidity level of 72% adding a touch of tropical flair to the atmosphere.

September Temperature in Hatfield

In September in Hatfield, the average temperature is 19°C (66°F). Maximums can reach 34°C (93°F), while minimums can drop to as low as 3°C (37°F). Be prepared for a mix of warm days and cooler nights when traveling to Hatfield during this month.

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

The chart illustrates September temperature patterns in Hatfield, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hatfield, September typically has an average temperature of 19°C (66°F), with highs reaching up to 34°C (93°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec293137485969747366554133
Data source: Temperature data for Hatfield 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 Hatfield

In Hatfield in September, the total precipitation amount is 97 mm (3.8 in), occurring over a span of 8 days.

September Precipitation Trends in Hatfield

The chart displays monthly precipitation patterns in Hatfield, 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 Hatfield, September typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec7491821309978144819714292119
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hatfield

In Hatfield in September, humidity is 72%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace that can make even the lightest activities feel strenuous for traveling.

September Average Humidity in Hatfield

This chart illustrates the average monthly humidity levels in Hatfield, 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 Hatfield is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%84%76%72%67%64%72%81%87%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hatfield

In Hatfield 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 Hatfield.

Maximum UV Index Levels in Hatfield for September

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

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

This table compares monthly weather conditions in Hatfield, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)74 mm (2.9 inches)89%moderate
February Weather0°C (32°F)91 mm (3.6 inches)88%moderate
March Weather3°C (37°F)82 mm (3.2 inches)86%high
April Weather9°C (48°F)130 mm (5.1 inches)84%very high
May Weather15°C (59°F)99 mm (3.9 inches)76%very high
June Weather20°C (69°F)78 mm (3.1 inches)72%very high
July Weather23°C (74°F)144 mm (5.7 inches)66%very high
August Weather23°C (73°F)81 mm (3.2 inches)64%very high
September Weather19°C (66°F)97 mm (3.8 inches)72%very high
October Weather13°C (55°F)142 mm (5.6 inches)81%high
November Weather5°C (41°F)92 mm (3.6 inches)87%moderate
December Weather0°C (33°F)119 mm (4.7 inches)84%low

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