Best year time to visit Castle Shannon

General weather information about Castle Shannon

Average annual temperature is 12.1 °C

Absolute maximum temperature: 33.3 °C

Absolute minimum temperature: -11.7 °C

Number of sunny days: 150 days

Number of rainy days: 208 days

Number of snow days: 7 days

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

Castle Shannon air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)15.920.720.727.830.232.832.331.433.327.518.516.0
Average daytime temperature (°C)7.410.610.218.521.825.728.427.124.218.111.18.7
Average temperature (°C)3.24.14.511.615.319.622.821.518.613.25.84.6
Average night temperature (°C)0.2-0.80.15.89.314.318.316.914.19.31.71.5
Absolute minimum temperature (°C)-6.7-11.7-7.9-1.72.09.814.611.98.90.9-6.9-5.0

Castle Shannon monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.710.711.913.314.415.014.713.712.511.110.09.3
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)2.86.96.18.610.410.610.810.58.76.26.64.0
Precipitation (mm)1096610455791221179150984372
Sunny days814121520123812161812
Rainy days201318151118282318151118
Snow days311000000011

Castle Shannon - weather forecast by months

Castle Shannon weather in januaryCastle Shannon weather in februaryCastle Shannon weather in marchCastle Shannon weather in aprilCastle Shannon weather in mayCastle Shannon weather in juneCastle Shannon weather in julyCastle Shannon weather in augustCastle Shannon weather in septemberCastle Shannon weather in octoberCastle Shannon weather in novemberCastle Shannon weather in december

Best time to visit Castle Shannon:

The best time to visit Castle Shannon during the most sunny months:

  • May — 10.4(h)
  • June — 10.6(h)
  • July — 10.8(h)
  • August — 10.5(h)

The largest precipitation sum in Castle Shannon is at

  • January — 109(mm)
  • June — 122(mm)
  • July — 117(mm)

    • Weather forecast in the closest to Castle Shannon admin centers

    Weather forecast in the closest towns to Castle Shannon

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    Frequently asked questions

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