Best year time to visit Gretna

General weather information about Gretna

Average annual temperature is 15.9 °C

Absolute maximum temperature: 41.2 °C

Absolute minimum temperature: -11.0 °C

Number of sunny days: 206 days

Number of rainy days: 158 days

Number of snow days: 1 day

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

Gretna air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)21.222.824.827.731.638.237.041.234.930.326.719.2
Average daytime temperature (°C)10.613.415.321.126.530.833.033.129.621.816.111.9
Average temperature (°C)5.16.89.014.620.124.526.926.822.816.410.06.9
Average night temperature (°C)1.31.94.59.414.919.122.322.217.712.65.73.4
Absolute minimum temperature (°C)-7.5-11.0-5.23.67.014.117.916.014.4-0.1-3.0-2.3

Gretna monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.014.012.011.010.09.0
Daylight mean duration (h)10.010.812.013.114.114.614.413.512.411.310.29.7
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)5.87.37.710.010.912.711.411.110.78.17.96.2
Precipitation (mm)861061885111964748947642158
Sunny days161913201516111820182218
Rainy days1491810161420131013813
Snow days100000000000

Gretna - weather forecast by months

Gretna weather in januaryGretna weather in februaryGretna weather in marchGretna weather in aprilGretna weather in mayGretna weather in juneGretna weather in julyGretna weather in augustGretna weather in septemberGretna weather in octoberGretna weather in novemberGretna weather in december

Best time to visit Gretna:

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

  • June — 12.7(h)
  • July — 11.4(h)

The largest precipitation sum in Gretna is at

  • February — 106(mm)
  • March — 188(mm)
  • May — 119(mm)

    • Weather forecast in the closest to Gretna admin centers

    Weather forecast in the closest towns to Gretna

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    Frequently asked questions

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