Best year time to visit Alpharetta

General weather information about Alpharetta

Average annual temperature is 16.4 °C

Absolute maximum temperature: 35.7 °C

Absolute minimum temperature: -5.3 °C

Number of sunny days: 169 days

Number of rainy days: 196 days

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

Alpharetta air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)19.624.024.726.629.832.135.035.732.628.025.019.6
Average daytime temperature (°C)13.416.617.621.124.328.432.231.127.522.416.913.0
Average temperature (°C)8.411.311.815.218.822.525.925.321.816.711.27.7
Average night temperature (°C)4.57.36.610.314.317.420.720.816.911.96.73.5
Absolute minimum temperature (°C)-4.3-3.6-5.34.35.213.618.316.412.05.4-3.9-4.2

Alpharetta monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.013.012.011.010.010.0
Daylight mean duration (h)10.211.012.013.013.914.414.213.412.411.310.49.9
Daylight minimum duration (h)9.010.011.012.013.014.013.012.011.010.010.09.0
Sunshine mean duration (h)5.46.08.28.89.910.711.710.29.98.86.86.3
Precipitation (mm)17814514916311913771167703968113
Sunny days129161311138919222017
Rainy days19191517201723221191014
Snow days000000000000

Alpharetta - weather forecast by months

Alpharetta weather in januaryAlpharetta weather in februaryAlpharetta weather in marchAlpharetta weather in aprilAlpharetta weather in mayAlpharetta weather in juneAlpharetta weather in julyAlpharetta weather in augustAlpharetta weather in septemberAlpharetta weather in octoberAlpharetta weather in novemberAlpharetta weather in december

Best time to visit Alpharetta:

The best time to visit Alpharetta during the most sunny months:

  • July — 11.7(h)

The largest precipitation sum in Alpharetta is at

  • January — 178(mm)
  • March — 149(mm)
  • April — 163(mm)
  • August — 167(mm)

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    Frequently asked questions

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