Best year time to visit Stony Brook

General weather information about Stony Brook

Average annual temperature is 13.5 °C

Absolute maximum temperature: 35.5 °C

Absolute minimum temperature: -12.2 °C

Number of sunny days: 183 days

Number of rainy days: 178 days

Number of snow days: 4 days

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* Weather data for Stony Brook United States is based on climate observations for 2026 year

Stony Brook air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)17.818.518.230.129.735.534.531.634.727.521.116.2
Average daytime temperature (°C)9.19.811.419.822.827.030.728.525.020.211.89.4
Average temperature (°C)5.24.55.813.516.120.825.023.420.014.96.85.4
Average night temperature (°C)2.00.10.88.49.815.320.519.016.010.62.61.9
Absolute minimum temperature (°C)-4.4-12.2-4.70.44.310.117.014.810.44.8-4.8-4.7

Stony Brook 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)4.66.97.59.011.610.611.610.38.38.27.65.0
Precipitation (mm)1094811011850114157872094083178
Sunny days12161115221491215182118
Rainy days1910191591622191513813
Snow days021000000010

Stony Brook - weather forecast by months

Stony Brook weather in januaryStony Brook weather in februaryStony Brook weather in marchStony Brook weather in aprilStony Brook weather in mayStony Brook weather in juneStony Brook weather in julyStony Brook weather in augustStony Brook weather in septemberStony Brook weather in octoberStony Brook weather in novemberStony Brook weather in december

Best time to visit Stony Brook:

The best time to visit Stony Brook during the most sunny months:

  • May — 11.6(h)
  • June — 10.6(h)
  • July — 11.6(h)

The largest precipitation sum in Stony Brook is at

  • July — 157(mm)
  • September — 209(mm)
  • December — 178(mm)

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    Frequently asked questions

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