Grenville Weather Forecast

    • 25
    • 53

    Becoming Sunny

    • 29
    • 59

    Mostly Sunny

    • 27
    • 63

    Partly Sunny

    • 24
    • 52

    Chance Snow Showers

    • 23
    • 47

    Mostly Sunny

    • 29
    • 59

    Mostly Sunny

Today 31 Jan Union County

Partly cloudy in the Morning, then becoming mostly sunny. Areas of freezing fog in the morning. Highs in the lower 50s. Southwest Winds 15 to 20 Mph.

Tonight 31 Jan Union County

Cold, clear. Lows in the mid 20s.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Grenville Temperature Statistics

January Temperature

Clayton Municipal Airpark (27.3 miles)

  • Lowest 24 January, 2026

    -2.9 °F

  • Average January

    37.8 °F

  • Highest 1 January, 2026

    72.6 °F

Climate (2021–Present)

Clayton Municipal Airpark (27.3 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    55.9 °F

  • Average High 2021–2026

    69.7 °F
Get WillyWeather+ to remove ads