Maryland weather in September 2025

Expect 26°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Maryland in September. Check more long-term weather averages for Maryland in September before you book your next holiday to Maryland in 2025/2026.

  • 26°C maximum daytime temperature in September in Maryland (Baltimore)26
    26°C max day temperature
  • 7 hours of sunshine per day
  • 7 days with some rainfall in September in Maryland (Baltimore)7
    7 days with some rainfall
  • 16°C minimum night-time temperature in September in Maryland (Baltimore)16
    16°C min night temperature
  • 12 hours of daylight per day in September in Maryland (Baltimore)12
    12 hours of daylight per day
  • Low heat & humidity in September in Maryland (Baltimore)L
    Low heat & humidity
  • 91 mm monthly rainfall in September in Maryland (Baltimore)91
    91 mm of monthly rainfall
  • UV (maximum) index 7 (High) in September in Maryland (Baltimore)7
    7 (High) UV index
  • 22°C sea temperature in September in Maryland (Baltimore)22
    22°C sea temperature

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The September weather guide for Maryland (Baltimore) 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.

Top Maryland destinations

Below are average maximum temperatures at popular countries, regions and places in Maryland in September. Select a holiday destination to see more weather parameters.

All Maryland destinations

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

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More about the USA

How hot is it in Maryland in September?

Daytime temperatures usually reach 26°C in Baltimore, Maryland in September with low heat and humidity, falling to 16°C at night.

How sunny is it in Maryland in September?

There are normally 7 hours of bright sunshine each day in Baltimore, Maryland in September - that's 60% of daylight hours.

How warm is the sea around Maryland in September?

The average sea temperature around Baltimore, Maryland in September is 22°C.

Does it rain in Maryland in September?

There are usually 7 days with some rain in Baltimore, Maryland in September and the average monthly rainfall is 91mm.

What is the chance of a hurricane in Maryland in September?

On average less than 1 day in September in Baltimore, Maryland is likely to be affected by the passage of one or more tropical storms.

Maryland September sunrise & sunset times

Browse the sunrise and sunset times for Maryland in September 2025. Select a month to view Maryland sunrise and sunset times for the next 12 months. The Maryland sunrise and sunset times shown below are for Baltimore.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:35 18:37
Monday, 15th September 2025 05:48 18:14
Tuesday, 30th September 2025 06:02 17:50

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