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September Weather in Howell, United States

Last updated: June 24, 2025

In Howell, United States, the average temperature in September hovers around 18°C (65°F). Expect a temperature range that can dip to a low of 1°C (34°F) and soar up to a sizzling 34°C (93°F). With an average precipitation of 78 mm (3.1 in) spread over 10 days, be prepared for some wet weather. Additionally, the air feels quite humid, with an average humidity level of 80%.

September Temperature in Howell

In September in Howell, the average temperature is 18°C (65°F). The maximum can reach 34°C (93°F), and the minimum can be as low as 1°C (34°F). This temperature range makes Howell an ideal destination for travelers looking to enjoy a variety of outdoor activities.

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

The chart illustrates September temperature patterns in Howell, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Howell, September typically has an average temperature of 18°C (65°F), with highs reaching up to 34°C (93°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec262737476070747265533832
Data source: Temperature data for Howell 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 Howell

In Howell in September, the precipitation amount is 78 mm (3.1 in) over the course of 10 days.

September Precipitation Trends in Howell

The chart displays monthly precipitation patterns in Howell, 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 Howell, September typically receives around 78 mm (3.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec65677490115969768781067154
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Howell

In Howell in September, humidity is 80%. With an average temperature of 18°C (65°F), this humidity feels like wandering through a warm, damp blanket, making every step slightly heavy and resulting in a constant sheen of sweat, which can be both refreshing and exhausting for travelers.

September Average Humidity in Howell

This chart illustrates the average monthly humidity levels in Howell, 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 Howell is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%85%86%80%80%80%81%80%84%90%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Howell

In Howell 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 Howell.

Maximum UV Index Levels in Howell for September

The chart shows the monthly maximum UV Index (UVI) for Howell 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 Howell typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24599101097542
Data source: Howell 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 Howell Compares to Other Months

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

This table compares monthly weather conditions in Howell, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)65 mm (2.5 inches)88%low
February Weather-3°C (28°F)67 mm (2.6 inches)87%moderate
March Weather3°C (37°F)74 mm (2.9 inches)85%moderate
April Weather8°C (47°F)90 mm (3.5 inches)86%very high
May Weather15°C (60°F)115 mm (4.5 inches)80%very high
June Weather21°C (70°F)96 mm (3.8 inches)80%very high
July Weather23°C (74°F)97 mm (3.8 inches)80%very high
August Weather22°C (72°F)68 mm (2.7 inches)80%very high
September Weather18°C (65°F)78 mm (3.1 inches)80%high
October Weather12°C (54°F)106 mm (4.2 inches)84%moderate
November Weather4°C (39°F)71 mm (2.8 inches)89%moderate
December Weather0°C (32°F)54 mm (2.1 inches)86%low

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