Chatham Weather Forecast

    • 58
    • 75

    Mostly Sunny

    • 49
    • 81

    Rain Showers

    • 30
    • 63

    Rain Showers

    • 41
    • 51

    Mostly Cloudy

    • 35
    • 58

    Mostly Cloudy

    • 43
    • 60

    Chance Rain

Today 9 Mar Sangamon

Sunny. Not as cool with Highs in the mid 70s. Southwest Winds 15 to 20 Mph.

Tonight 9 Mar Sangamon

Partly cloudy in the Evening, then clearing. Not as cool with Lows in the upper 50s. South Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chatham Temperature Statistics

March Temperature

Springfield - Abraham Lincoln Capital Airport (11.2 miles)

  • Lowest 1 March, 2026

    22.6 °F

  • Average March

    45.5 °F

  • Highest 6 March, 2026

    79 °F

Climate (2021–Present)

Springfield - Abraham Lincoln Capital Airport (11.2 miles)

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  • Average Low 2021–2026

    45 °F

  • Average 2021–2026

    55.3 °F

  • Average High 2021–2026

    65.3 °F
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