Cromwell Weather Forecast

    • 68
    • 93

    Rain Showers

    • 61
    • 81

    Chance Rain Showers

    • 61
    • 81

    Slight Chance Thunderstorms

    • 65
    • 84

    Chance Thunderstorms

    • 61
    • 81

    Chance Thunderstorms

    • 61
    • 80

    Chance Thunderstorms

Today 8 Sep Union

Partly cloudy. Humid with Highs in the lower 90s. South Winds 10 to 15 Mph. Heat index Values up to 104.

Tonight 8 Sep Union

A chance of Thunderstorms. Showers with Lows in the upper 60s. East Winds 5 to 10 Mph, becoming south after midnight. Chance of rain 90 percent. Heat index Values up to 102 early in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cromwell Temperature Statistics

September Temperature

Creston Municipal Airport (5 miles)

  • Lowest 2 September, 2026

    68 °F

  • Average September

    82.1 °F

  • Highest 1 September, 2026

    95 °F

Climate (2021–2026)

Creston Municipal Airport (5 miles)

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  • Average Low 2021–2026

    41.6 °F

  • Average 2021–2026

    51.7 °F

  • Average High 2021–2026

    62.2 °F
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