Union Weather Forecast

    • 53
    • 63

    Rain Showers

    • 52
    • 68

    Decreasing Clouds

    • 57
    • 78

    Mostly Sunny

    • 61
    • 81

    Mostly Sunny

    • 63
    • 77

    Rain Showers Likely

    • 57
    • 75

    Rain Showers Likely

    • 52
    • 74

    Mostly Sunny

Today 20 Aug Tolland

Showers with a slight chance of Thunderstorms. Patchy fog. Cooler with Highs in the mid 60s. East Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 80 percent.

Tonight 20 Aug Tolland

Cloudy. Showers with a slight chance of Thunderstorms this Evening, then a chance of Showers after midnight. Patchy fog this evening. Near steady temperature in the mid 50s. Northeast Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 90 percent.

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Union Temperature Statistics

August Temperature

Willimantic, Windham Airport (16.8 miles)

  • Lowest 2 August, 2025

    51.7 °F

  • Average August

    71.7 °F

  • Highest 14 August, 2025

    91.7 °F

Climate (2020–Present)

Willimantic, Windham Airport (16.8 miles)

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  • Average Low 2020–2025

    41.8 °F

  • Average 2020–2025

    51.8 °F

  • Average High 2020–2025

    61.9 °F
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