Best year time to visit McLean

General weather information about McLean

Average annual temperature is 10.3 °C

Absolute maximum temperature: 33.4 °C

Absolute minimum temperature: -17.8 °C

Number of sunny days: 160 days

Number of rainy days: 172 days

Number of snow days: 33 days

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

McLean air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)8.812.715.825.632.633.432.031.831.327.916.313.9
Average daytime temperature (°C)2.33.06.314.522.227.227.525.923.015.47.96.1
Average temperature (°C)-0.5-1.31.58.415.220.522.120.518.011.44.13.3
Average night temperature (°C)-2.7-5.2-2.43.49.314.617.216.214.08.50.71.0
Absolute minimum temperature (°C)-17.8-15.9-10.6-4.51.58.013.19.67.70.3-8.5-4.0

McLean monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.410.511.913.414.715.315.013.912.511.09.79.0
Daylight minimum duration (h)9.09.011.012.014.015.014.013.011.010.09.08.0
Sunshine mean duration (h)2.76.26.78.810.511.812.510.88.75.35.53.6
Precipitation (mm)67919695274390159481066259
Sunny days8111014191811141591714
Rainy days11111315121220171521916
Snow days1268100000141

McLean - weather forecast by months

McLean weather in januaryMcLean weather in februaryMcLean weather in marchMcLean weather in aprilMcLean weather in mayMcLean weather in juneMcLean weather in julyMcLean weather in augustMcLean weather in septemberMcLean weather in octoberMcLean weather in novemberMcLean weather in december

Best time to visit McLean:

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

  • May — 10.5(h)
  • June — 11.8(h)
  • July — 12.5(h)
  • August — 10.8(h)

Months with the longest average daylight duration in McLean:

  • June — 15.3(h)

The largest precipitation sum in McLean is at

  • August — 159(mm)
  • October — 106(mm)

    • Weather forecast in the closest to McLean admin centers

    Weather forecast in the closest towns to McLean

    Explore McLean

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    MapTrains schedule
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    Frequently asked questions

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