Best year time to visit Old Saint Marys

General weather information about Old Saint Marys

Average annual temperature is 23.2 °C

Absolute maximum temperature: 37.5 °C

Absolute minimum temperature: 2.2 °C

Number of sunny days: 169 days

Number of rainy days: 196 days

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* Weather data for Old Saint Marys United States is based on climate observations for 2026 year

Old Saint Marys air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)27.029.133.930.131.135.234.437.535.031.928.126.7
Average daytime temperature (°C)21.221.525.425.828.833.033.134.632.527.621.821.0
Average temperature (°C)16.816.420.821.725.329.129.830.429.223.718.016.4
Average night temperature (°C)12.912.817.818.322.126.027.127.226.320.915.012.7
Absolute minimum temperature (°C)2.72.28.311.718.621.024.224.823.89.17.55.3

Old Saint Marys monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.013.013.013.013.012.011.011.010.0
Daylight mean duration (h)10.611.212.012.813.513.913.713.112.311.510.810.4
Daylight minimum duration (h)10.010.011.012.013.013.013.012.011.011.010.010.0
Sunshine mean duration (h)6.68.48.09.310.112.512.711.811.18.76.47.6
Precipitation (mm)861738187105253560588015037
Sunny days1512108520172310121720
Rainy days16162122261014820191311
Snow days000000000000

Old Saint Marys - weather forecast by months

Old Saint Marys weather in januaryOld Saint Marys weather in februaryOld Saint Marys weather in marchOld Saint Marys weather in aprilOld Saint Marys weather in mayOld Saint Marys weather in juneOld Saint Marys weather in julyOld Saint Marys weather in augustOld Saint Marys weather in septemberOld Saint Marys weather in octoberOld Saint Marys weather in novemberOld Saint Marys weather in december

Best time to visit Old Saint Marys:

The best time to visit Old Saint Marys during the most sunny months:

  • June — 12.5(h)
  • July — 12.7(h)

The largest precipitation sum in Old Saint Marys is at

  • April — 187(mm)
  • May — 105(mm)
  • November — 150(mm)

    • Weather forecast in the closest to Old Saint Marys admin centers

    Weather forecast in the closest towns to Old Saint Marys

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    Frequently asked questions

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