Best year time to visit Mercersburg

General weather information about Mercersburg

Average annual temperature is 13.3 °C

Absolute maximum temperature: 35.9 °C

Absolute minimum temperature: -10.7 °C

Number of sunny days: 179 days

Number of rainy days: 181 days

Number of snow days: 5 days

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

Mercersburg air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)15.222.123.830.628.732.935.933.734.727.522.315.5
Average daytime temperature (°C)8.210.911.920.922.526.831.429.625.419.812.09.2
Average temperature (°C)4.44.85.713.615.920.425.123.419.714.46.44.8
Average night temperature (°C)1.30.20.97.79.614.419.618.415.09.71.91.2
Absolute minimum temperature (°C)-3.5-10.7-6.10.53.79.516.015.09.82.7-5.8-5.3

Mercersburg monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.014.013.011.010.09.0
Daylight mean duration (h)9.710.712.013.314.414.914.713.712.511.210.09.4
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)4.76.97.69.210.611.012.111.28.97.97.74.7
Precipitation (mm)733978136381268682121556495
Sunny days13181115181471116172316
Rainy days1882015131624201414613
Snow days020000000012

Mercersburg - weather forecast by months

Mercersburg weather in januaryMercersburg weather in februaryMercersburg weather in marchMercersburg weather in aprilMercersburg weather in mayMercersburg weather in juneMercersburg weather in julyMercersburg weather in augustMercersburg weather in septemberMercersburg weather in octoberMercersburg weather in novemberMercersburg weather in december

Best time to visit Mercersburg:

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

  • June — 11.0(h)
  • July — 12.1(h)
  • August — 11.2(h)

The largest precipitation sum in Mercersburg is at

  • April — 136(mm)
  • June — 126(mm)
  • September — 121(mm)

    • Weather forecast in the closest to Mercersburg admin centers

    Weather forecast in the closest towns to Mercersburg

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    Frequently asked questions

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