Roseville Weather Forecast

    • 53
    • 91

    Rain Showers

    • 49
    • 67

    Chance Rain Showers

    • 48
    • 64

    Rain Showers

    • 51
    • 56

    Rain Showers

    • 55
    • 70

    Chance Rain Showers

    • 57
    • 76

    Slight Chance Thunderstorms

Today 20 May Lancaster

Sunny in the Morning, then partly sunny with Showers likely with a chance of Thunderstorms in the afternoon. Hot with Highs around 90. Temperature falling into the lower 80s in the afternoon. West Winds 5 to 10 Mph. Chance of rain 70 percent.

Tonight 20 May Lancaster

A chance of Thunderstorms in the evening. Mostly cloudy with a chance of Showers. Much cooler with Lows in the lower 50s. North Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Roseville Temperature Statistics

May Temperature

Lancaster, Lancaster Airport (2.5 miles)

  • Lowest 4 May, 2026

    36 °F

  • Average May

    57.9 °F

  • Highest 17 May, 2026

    84.9 °F

Climate (2021–Present)

Lancaster, Lancaster Airport (2.5 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    55.6 °F

  • Average High 2021–2026

    65.2 °F
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