Frederick weather in September 2025

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

  • 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

More about Frederick

Frederick by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Maryland

Argus Car Hire: Compare low prices on car hire

  • Compare car hire with popular rental companies
  • Book with no credit card fees & free cancellation policy
  • Find low prices based on destination & travel dates
Go to Argus Car Hire deal >>

View all Argus Car Hire offers

The September weather guide for Maryland (Frederick) 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.

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

Back to top

More about the USA

How hot is it in Frederick in September?

Daytime temperatures usually reach 26°C in Frederick in September with low heat and humidity, falling to 13°C at night.

How sunny is it in Frederick in September?

There are normally 7 hours of bright sunshine each day in Frederick in September - that's 59% of daylight hours.

Does it rain in Frederick in September?

There are usually 8 days with some rain in Frederick in September and the average monthly rainfall is 90mm.

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

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

Frederick September sunrise & sunset times

Browse the sunrise and sunset times for Frederick in September 2025. Select a month to view Frederick sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:38 18:40
Monday, 15th September 2025 05:51 18:18
Tuesday, 30th September 2025 06:05 17:53

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^