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September Weather in Port Deposit, United States

Last updated: June 24, 2025

In September, the average temperature in Port Deposit, United States hovers around 22°C (72°F), but be prepared for a minimum of 9°C (48°F) and a maximum of 33°C (91°F). With an average humidity of 75%, the atmosphere can feel quite warm. Expect about 94 mm (3.7 in) of precipitation spread over 10 days, so don’t forget your umbrella!

September Temperature in Port Deposit

In September in Port Deposit, the average temperature is 22°C (72°F), with maximums reaching up to 33°C (91°F) and minimums dipping as low as 9°C (48°F). It's a great time to visit for travelers seeking mild weather and a pleasant climate.

September Weather in Port Deposit: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Port Deposit, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Deposit, September typically has an average temperature of 22°C (72°F), with highs reaching up to 33°C (91°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec363945566575807872624740
Data source: Temperature data for Port Deposit 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 Port Deposit

In Port Deposit in September, the precipitation amount is 94 mm (3.7 in) over a duration of 10 days.

September Precipitation Trends in Port Deposit

The chart displays monthly precipitation patterns in Port Deposit, 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 Port Deposit, September typically receives around 94 mm (3.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec60979710013497129133941048198
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Port Deposit

In Port Deposit in September, humidity is 75%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making outdoor activities enjoyable yet requiring travelers to stay hydrated and take breaks in shaded areas.

September Average Humidity in Port Deposit

This chart illustrates the average monthly humidity levels in Port Deposit, 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 Port Deposit is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%83%81%78%79%74%72%75%81%85%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Port Deposit

In Port Deposit 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 Port Deposit.

Maximum UV Index Levels in Port Deposit for September

The chart shows the monthly maximum UV Index (UVI) for Port Deposit 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 Port Deposit typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098643
Data source: Port Deposit 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 Port Deposit Compares to Other Months

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

This table compares monthly weather conditions in Port Deposit, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)60 mm (2.4 inches)84%moderate
February Weather4°C (40°F)97 mm (3.8 inches)83%moderate
March Weather7°C (45°F)97 mm (3.8 inches)83%high
April Weather13°C (56°F)100 mm (3.9 inches)81%very high
May Weather18°C (65°F)134 mm (5.3 inches)78%very high
June Weather24°C (75°F)96 mm (3.8 inches)79%very high
July Weather27°C (80°F)129 mm (5.1 inches)74%very high
August Weather25°C (78°F)133 mm (5.2 inches)72%very high
September Weather22°C (72°F)94 mm (3.7 inches)75%very high
October Weather17°C (62°F)104 mm (4.1 inches)81%high
November Weather9°C (48°F)81 mm (3.2 inches)85%moderate
December Weather5°C (41°F)98 mm (3.9 inches)84%moderate

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