Standard Weather Forecast

    • 17
    • 43

    Becoming Sunny

    • 24
    • 32

    Increasing Clouds

    • 37
    • 42

    Mostly Cloudy

    • 30
    • 48

    Mostly Cloudy

    • 46
    • 50

    Chance Rain

    • 39
    • 59

    Mostly Cloudy

    • 34
    • 49

    Mostly Cloudy

Today 20 Dec Putnam

Mostly cloudy. Not as cool with Highs in the lower 40s. Temperature falling into the upper 30s late. Northwest Winds 10 to 15 Mph.

Tonight 20 Dec Putnam

Mostly clear. Lows around 18. Northwest Winds 5 to 10 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Standard Temperature Statistics

December Temperature

Illinois Valley Regional Airport (6.2 miles)

  • Lowest 14 December, 2025

    -3.3 °F

  • Average December

    22.6 °F

  • Highest 18 December, 2025

    52.7 °F

Climate (2020–Present)

Illinois Valley Regional Airport (6.2 miles)

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  • Average Low 2020–2025

    43.1 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    62.1 °F
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