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September Weather in Lanham-Seabrook, United States

Last updated: June 24, 2025

In Lanham-Seabrook, United States, the average temperature in September is a comfortable 22°C (72°F). Visitors can expect a range, with minimums dipping to 8°C (47°F) and maximums soaring up to 35°C (95°F). During this month, precipitation typically measures 107 mm (4.2 in) over about 10 days, and the average humidity lingers around 75%, creating a warm and somewhat humid atmosphere.

September Temperature in Lanham-Seabrook

In September in Lanham-Seabrook, the average temperature is 22°C (72°F). Maximum can reach 35°C (95°F), and minimum can be as low as 8°C (47°F). This range makes it an ideal time for travelers seeking mild weather and the chance to enjoy both warm and cooler moments.

September Weather in Lanham-Seabrook: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Lanham-Seabrook, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lanham-Seabrook, September typically has an average temperature of 22°C (72°F), with highs reaching up to 35°C (95°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec374146576675807772624841
Data source: Temperature data for Lanham-Seabrook 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 Lanham-Seabrook

In Lanham-Seabrook in September, the precipitation amount is 107 mm (4.2 in) accumulated over a period of 10 days.

September Precipitation Trends in Lanham-Seabrook

The chart displays monthly precipitation patterns in Lanham-Seabrook, 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 Lanham-Seabrook, September typically receives around 107 mm (4.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec6199861011341181921681071157992
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lanham-Seabrook

In Lanham-Seabrook 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 Lanham-Seabrook

This chart illustrates the average monthly humidity levels in Lanham-Seabrook, 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 Lanham-Seabrook 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 Lanham-Seabrook

In Lanham-Seabrook 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 Lanham-Seabrook.

Maximum UV Index Levels in Lanham-Seabrook for September

The chart shows the monthly maximum UV Index (UVI) for Lanham-Seabrook 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 Lanham-Seabrook typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098743
Data source: Lanham-Seabrook 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 Lanham-Seabrook Compares to Other Months

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

This table compares monthly weather conditions in Lanham-Seabrook, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)61 mm (2.4 inches)84%moderate
February Weather5°C (41°F)99 mm (3.9 inches)83%moderate
March Weather8°C (47°F)86 mm (3.4 inches)83%high
April Weather14°C (57°F)101 mm (4.0 inches)81%very high
May Weather19°C (66°F)134 mm (5.3 inches)78%very high
June Weather24°C (75°F)118 mm (4.7 inches)79%very high
July Weather27°C (80°F)191 mm (7.5 inches)74%very high
August Weather25°C (78°F)168 mm (6.6 inches)72%very high
September Weather22°C (72°F)107 mm (4.2 inches)75%very high
October Weather17°C (63°F)115 mm (4.5 inches)81%high
November Weather9°C (48°F)79 mm (3.1 inches)85%moderate
December Weather5°C (41°F)92 mm (3.6 inches)84%moderate

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