Best year time to visit Merrillville

General weather information about Merrillville

Average annual temperature is 11.4 °C

Absolute maximum temperature: 35.5 °C

Absolute minimum temperature: -18.9 °C

Number of sunny days: 166 days

Number of rainy days: 186 days

Number of snow days: 13 days

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

Merrillville air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)16.214.220.325.933.433.332.635.532.428.420.714.0
Average daytime temperature (°C)3.96.78.016.721.926.728.026.424.017.310.57.1
Average temperature (°C)0.21.22.910.215.620.222.521.619.213.05.53.8
Average night temperature (°C)-2.6-2.8-0.84.810.515.317.817.615.29.81.61.4
Absolute minimum temperature (°C)-17.2-18.9-10.4-3.41.810.014.011.69.4-3.1-9.7-7.7

Merrillville 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)9.610.611.913.314.515.114.813.812.511.19.99.2
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)3.07.56.69.310.311.811.910.68.66.46.83.8
Precipitation (mm)7410213063656914698671373382
Sunny days918816191710131392014
Rainy days1592214121321181721915
Snow days711000000112

Merrillville - weather forecast by months

Merrillville weather in januaryMerrillville weather in februaryMerrillville weather in marchMerrillville weather in aprilMerrillville weather in mayMerrillville weather in juneMerrillville weather in julyMerrillville weather in augustMerrillville weather in septemberMerrillville weather in octoberMerrillville weather in novemberMerrillville weather in december

Best time to visit Merrillville:

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

  • May — 10.3(h)
  • June — 11.8(h)
  • July — 11.9(h)
  • August — 10.6(h)

The largest precipitation sum in Merrillville is at

  • March — 130(mm)
  • July — 146(mm)
  • October — 137(mm)

    • Weather forecast in the closest to Merrillville admin centers

    Weather forecast in the closest towns to Merrillville

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    Frequently asked questions

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