Frederick weather in September 2019

  • 26°C maximum daytime temperature in September in Frederick26
    26°C max day temperature
  • 7 hours of sunshine per day
  • 8 days with some rainfall in September in Frederick8
    8 days with some rainfall
  • 13°C minimum night-time temperature in September in Frederick13
    13°C min night temperature
  • 12 hours of daylight per day in September in Frederick12
    12 hours of daylight per day
  • Low heat & humidity in September in FrederickL
    Low heat & humidity
  • 90 mm monthly rainfall in September in Frederick90
    90 mm of monthly rainfall
  • UV (maximum) index 7 (High) in September in Frederick7
    7 (High) UV index
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The September weather guide for Frederick, Maryland shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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Metric (°C / mm)  |  Imperial (°F / inches)

Guide to Frederick weather in September

The average maximum daytime temperature in Frederick in September is a warm 26°C (79°F) with low heat & humidity. The average night-time temperature is usually a cool 13°C (55°F). There are usually 7 hours of bright sunshine each day, which represents 59% of the 12 hours of daylight.

Expect 90mm (3.5 inches) of rainfall across the whole of September with 8 days with some rain falling. Maximum UV levels will be high (7 UV index) at midday when the skies are clear.

Frederick sunrise & sunset times for September 2019

Browse the sunrise & sunset times for Frederick in September 2019. Select a month to view Frederick sunrise & sunset times for the next twelve months.


Date Sunrise times Sunset times
Sunday, 1st September 2019 06:38 19:41
Sunday, 15th September 2019 06:51 19:18
Monday, 30th September 2019 07:05 18:54
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