Best year time to visit Borough of Norristown

General weather information about Borough of Norristown

Average annual temperature is 13.6 °C

Absolute maximum temperature: 36.4 °C

Absolute minimum temperature: -10.9 °C

Number of sunny days: 184 days

Number of rainy days: 177 days

Number of snow days: 4 days

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* Weather data for Borough of Norristown United States is based on climate observations for 2026 year

Borough of Norristown air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)18.619.219.130.630.836.234.832.436.428.421.717.6
Average daytime temperature (°C)9.310.111.520.423.627.731.329.125.620.512.29.7
Average temperature (°C)5.24.75.713.816.421.025.023.620.214.86.85.3
Average night temperature (°C)1.90.30.78.49.715.120.319.115.910.32.41.8
Absolute minimum temperature (°C)-4.6-10.9-4.80.43.710.016.514.610.74.0-4.8-4.1

Borough of Norristown monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.015.014.014.013.011.010.09.0
Daylight mean duration (h)9.710.712.013.314.415.014.713.712.511.110.09.4
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)4.66.87.49.111.510.711.510.28.28.27.74.7
Precipitation (mm)113499812237114127611844568176
Sunny days13171216201471413212116
Rainy days1891814111624171710815
Snow days021000000010

Borough of Norristown - weather forecast by months

Borough of Norristown weather in januaryBorough of Norristown weather in februaryBorough of Norristown weather in marchBorough of Norristown weather in aprilBorough of Norristown weather in mayBorough of Norristown weather in juneBorough of Norristown weather in julyBorough of Norristown weather in augustBorough of Norristown weather in septemberBorough of Norristown weather in octoberBorough of Norristown weather in novemberBorough of Norristown weather in december

Best time to visit Borough of Norristown:

The best time to visit Borough of Norristown during the most sunny months:

  • May — 11.5(h)
  • June — 10.7(h)
  • July — 11.5(h)

The largest precipitation sum in Borough of Norristown is at

  • July — 127(mm)
  • September — 184(mm)
  • December — 176(mm)

    • Weather forecast in the closest to Borough of Norristown admin centers

    Weather forecast in the closest towns to Borough of Norristown

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    Frequently asked questions

    When is the best time to visit Borough of Norristown?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Borough of Norristown.
    What is the weather like in Borough of Norristown?
    See average temperature, rainfall and daylight hours for Borough of Norristown by month in the table above.
    How many sunny days does Borough of Norristown have?
    The monthly weather statistics above show sunshine and rainfall patterns for Borough of Norristown throughout the year.