Best year time to visit Potomac

General weather information about Potomac

Average annual temperature is 7.7 °C

Absolute maximum temperature: 36.0 °C

Absolute minimum temperature: -31.4 °C

Number of sunny days: 190 days

Number of rainy days: 112 days

Number of snow days: 63 days

Look at detailed online map of Potomac

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

Potomac air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)7.87.612.326.030.129.635.936.028.924.413.912.6
Average daytime temperature (°C)0.22.86.113.323.023.330.628.622.715.27.45.3
Average temperature (°C)-5.6-3.8-0.75.114.916.221.620.014.57.31.50.0
Average night temperature (°C)-10.5-8.8-5.3-1.37.49.512.412.37.61.8-2.7-3.8
Absolute minimum temperature (°C)-31.4-22.2-10.2-5.50.41.77.47.81.9-9.3-9.1-9.6

Potomac monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.08.0
Daylight mean duration (h)9.010.311.913.615.015.815.414.212.610.99.48.6
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.08.08.0
Sunshine mean duration (h)5.06.68.19.612.012.114.010.89.78.16.55.5
Precipitation (mm)44333534375334624333519
Sunny days14111110139241923201521
Rainy days22412182171279126
Snow days151516800000234

Potomac - weather forecast by months

Potomac weather in januaryPotomac weather in februaryPotomac weather in marchPotomac weather in aprilPotomac weather in mayPotomac weather in junePotomac weather in julyPotomac weather in augustPotomac weather in septemberPotomac weather in octoberPotomac weather in novemberPotomac weather in december

Best time to visit Potomac:

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

  • May — 12.0(h)
  • June — 12.1(h)
  • July — 14.0(h)

Months with the longest average daylight duration in Potomac:

  • June — 15.8(h)
  • July — 15.4(h)

The largest precipitation sum in Potomac is at

  • January — 44(mm)
  • June — 53(mm)
  • August — 46(mm)

    • Weather forecast in the closest to Potomac admin centers

    Weather forecast in the closest towns to Potomac

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    Frequently asked questions

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