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September Weather in Haverhill, United States

Last updated: June 24, 2025

In September, the average temperature in Haverhill, United States is a pleasant 19°C (66°F). However, temperatures can fluctuate, with lows of 6°C (43°F) and highs reaching 32°C (90°F). Expect about 74 mm (2.9 in) of precipitation over 8 days, and enjoy a comfortable average humidity of 71%.

September Temperature in Haverhill

In September in Haverhill, the average temperature is 19°C (66°F), with maximums reaching 32°C (90°F) and minimums dropping as low as 6°C (43°F). This diverse temperature range makes it ideal for travelers seeking a mix of warm and cooler weather.

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

The chart illustrates September temperature patterns in Haverhill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Haverhill, September typically has an average temperature of 19°C (66°F), with highs reaching up to 32°C (90°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec303237475768737366564333
Data source: Temperature data for Haverhill 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 Haverhill

In Haverhill in September, the precipitation amount is 74 mm (2.9 in) over a period of 8 days.

September Precipitation Trends in Haverhill

The chart displays monthly precipitation patterns in Haverhill, 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 Haverhill, September typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec7189871318388127707513198121
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Haverhill

In Haverhill in September humidity is 71%. With an average temperature of 19°C (66°F), this humidity feels like a warm, balmy embrace that enhances the tropical atmosphere, making it a perfect backdrop for leisurely strolls and outdoor adventures, though it may also lead to a slightly sticky feeling as you explore.

September Average Humidity in Haverhill

This chart illustrates the average monthly humidity levels in Haverhill, 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 Haverhill is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%82%80%72%72%67%66%71%79%84%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Haverhill

In Haverhill in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Haverhill.

Maximum UV Index Levels in Haverhill for September

The chart shows the monthly maximum UV Index (UVI) for Haverhill 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 Haverhill typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2558910997632
Data source: Haverhill 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 Haverhill Compares to Other Months

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

This table compares monthly weather conditions in Haverhill, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)71 mm (2.8 inches)86%low
February Weather0°C (32°F)89 mm (3.5 inches)84%moderate
March Weather3°C (37°F)87 mm (3.4 inches)82%moderate
April Weather8°C (47°F)131 mm (5.2 inches)80%very high
May Weather14°C (58°F)83 mm (3.3 inches)72%very high
June Weather20°C (68°F)88 mm (3.5 inches)72%very high
July Weather23°C (73°F)127 mm (5.0 inches)67%very high
August Weather23°C (73°F)70 mm (2.8 inches)66%very high
September Weather19°C (66°F)74 mm (2.9 inches)71%high
October Weather13°C (56°F)131 mm (5.1 inches)78%high
November Weather6°C (43°F)98 mm (3.9 inches)84%moderate
December Weather1°C (34°F)121 mm (4.8 inches)81%low

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