Best year time to visit Mount Gretna

General weather information about Mount Gretna

Average annual temperature is 12.9 °C

Absolute maximum temperature: 34.5 °C

Absolute minimum temperature: -10.8 °C

Number of sunny days: 179 days

Number of rainy days: 180 days

Number of snow days: 6 days

Look at detailed online map of Mount Gretna

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

Mount Gretna air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)16.919.320.030.530.034.534.431.733.627.321.516.3
Average daytime temperature (°C)8.19.910.819.822.926.630.128.124.219.211.28.6
Average temperature (°C)4.34.25.113.216.020.224.522.919.314.16.04.6
Average night temperature (°C)1.4-0.30.47.79.414.719.618.315.09.91.91.4
Absolute minimum temperature (°C)-4.5-10.8-6.10.22.59.516.614.39.42.6-5.8-4.4

Mount Gretna monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.015.014.014.013.011.010.09.0
Daylight mean duration (h)9.710.711.913.314.415.014.713.712.511.110.09.4
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)4.86.87.49.111.510.812.210.68.18.27.64.3
Precipitation (mm)823766125151071021391216874125
Sunny days12161216211271315202015
Rainy days19101814101824181511914
Snow days021000000012

Mount Gretna - weather forecast by months

Mount Gretna weather in januaryMount Gretna weather in februaryMount Gretna weather in marchMount Gretna weather in aprilMount Gretna weather in mayMount Gretna weather in juneMount Gretna weather in julyMount Gretna weather in augustMount Gretna weather in septemberMount Gretna weather in octoberMount Gretna weather in novemberMount Gretna weather in december

Best time to visit Mount Gretna:

The best time to visit Mount Gretna during the most sunny months:

  • May — 11.5(h)
  • June — 10.8(h)
  • July — 12.2(h)

The largest precipitation sum in Mount Gretna is at

  • April — 125(mm)
  • August — 139(mm)
  • September — 121(mm)
  • December — 125(mm)

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    Frequently asked questions

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