Weather in Frederick in September

General weather information about Frederick

Average annual temperature is 7.3 °C

Absolute maximum temperature: 36.0 °C

Absolute minimum temperature: -29.8 °C

Number of sunny days: 224 days

Number of rainy days: 109 days

Number of snow days: 32 days

Look at detailed online map of Frederick

* Weather data for Frederick United States is based on climate observations for 2026 year

Frederick air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)2.23.51.219.030.634.536.032.932.929.314.211.9
Average daytime temperature (°C)-5.6-2.9-3.86.923.628.727.627.524.314.27.33.2
Average temperature (°C)-9.3-8.5-8.21.916.822.721.321.718.48.91.5-1.1
Average night temperature (°C)-12.5-13.0-11.8-2.010.516.915.917.013.74.9-2.3-4.1
Absolute minimum temperature (°C)-27.2-29.8-20.1-11.80.610.010.312.57.7-7.6-12.0-9.3

Frederick monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.08.0
Daylight mean duration (h)9.110.411.913.514.915.715.314.112.510.99.58.7
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.08.08.0
Sunshine mean duration (h)3.67.47.89.512.112.513.311.09.77.87.14.8
Precipitation (mm)161849605910044955425345
Sunny days252016151813161916182622
Rainy days4011013171512141238
Snow days2814500000111

Frederick - weather forecast by months

Frederick weather in januaryFrederick weather in februaryFrederick weather in marchFrederick weather in aprilFrederick weather in mayFrederick weather in juneFrederick weather in julyFrederick weather in augustFrederick weather in septemberFrederick weather in octoberFrederick weather in novemberFrederick weather in december

Best time to visit Frederick:

The best time to visit Frederick during the most sunny months:

  • May — 12.1(h)
  • June — 12.5(h)
  • July — 13.3(h)

Months with the longest average daylight duration in Frederick:

  • June — 15.7(h)
  • July — 15.3(h)

The largest precipitation sum in Frederick is at

  • April — 60(mm)
  • June — 100(mm)
  • August — 95(mm)

    • Weather forecast in the closest to Frederick admin centers

    Weather forecast in the closest towns to Frederick

    Explore Frederick

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    Frequently asked questions

    When is the best time to visit Frederick?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Frederick.
    What is the weather like in Frederick?
    See average temperature, rainfall and daylight hours for Frederick by month in the table above.
    How many sunny days does Frederick have?
    The monthly weather statistics above show sunshine and rainfall patterns for Frederick throughout the year.