Martinsville Weather Forecast

    • 63
    • 85

    Mostly Sunny

    • 67
    • 87

    Mostly Sunny

    • 67
    • 84

    Rain Showers Likely

    • 67
    • 84

    Chance Thunderstorms

    • 69
    • 85

    Chance Rain Showers

    • 71
    • 87

    Slight Chance Thunderstorms

Today 4 Aug Clark

Patchy fog this morning. Sunny. Highs in the mid 80s. East Winds around 5 Mph.

Tonight 4 Aug Clark

Mostly clear. Lows in the lower 60s. Southeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Martinsville Temperature Statistics

August Temperature

Mattoon / Charleston, Coles County Memorial Airport (23 miles)

  • Lowest 1 August, 2026

    68 °F

  • Average August

    70.4 °F

  • Highest 1 August, 2026

    73.9 °F

Climate (2021–2026)

Mattoon / Charleston, Coles County Memorial Airport (23 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    55.4 °F

  • Average High 2021–2026

    65 °F
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