Lamar Weather Forecast

    • 73
    • 100

    Hot

    • 76
    • 101

    Hot

    • 76
    • 99

    Hot

    • 76
    • 98

    Hot

    • 76
    • 97

    Slight Chance Thunderstorms

    • 76
    • 99

    Hot

Today 23 Jul Southern Johnson County

Sunny. Highs in the upper 90s. South Winds around 5 Mph. Heat index Values up to 109 in the afternoon.

Tonight 23 Jul Southern Johnson County

Clear. Lows in the mid 70s. Southeast Winds around 5 Mph in the Evening, becoming light and variable. Heat index Values up to 109 early in the evening.

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Lamar Temperature Statistics

July Temperature

Russelville Municipal Airport (20.5 miles)

  • Lowest 2 July, 2025

    69.7 °F
  • Average July

    83.2 °F
  • Highest 18 July, 2025

    98.7 °F

Climate (2020–Present)

Russelville Municipal Airport (20.5 miles)

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  • Average Low 2020–2025

    51.3 °F
  • Average 2020–2025

    62.4 °F
  • Average High 2020–2025

    74 °F
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