Best year time to visit Rockville (historical)

General weather information about Rockville (historical)

Average annual temperature is 13.9 °C

Absolute maximum temperature: 34.5 °C

Absolute minimum temperature: -7.5 °C

Number of sunny days: 181 days

Number of rainy days: 179 days

Number of snow days: 5 days

Look at detailed online map of Rockville (historical)

* Weather data for Rockville (historical) United States is based on climate observations for 2026 year

Rockville (historical) air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)16.922.924.227.830.733.134.534.233.730.125.615.8
Average daytime temperature (°C)8.713.213.419.323.927.730.329.327.520.613.89.9
Average temperature (°C)4.56.46.912.517.521.424.523.520.814.97.95.1
Average night temperature (°C)1.41.52.16.811.816.120.018.715.410.63.71.6
Absolute minimum temperature (°C)-5.5-7.5-6.1-0.24.011.116.113.210.5-1.0-6.4-5.7

Rockville (historical) monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.014.013.011.010.09.0
Daylight mean duration (h)9.810.812.013.214.314.814.613.612.411.210.19.5
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)4.37.97.69.510.410.811.611.410.57.47.85.1
Precipitation (mm)1345814410260967911540763957
Sunny days6181517181391516182214
Rainy days23101413131722161413816
Snow days202000000001

Rockville (historical) - weather forecast by months

Rockville (historical) weather in januaryRockville (historical) weather in februaryRockville (historical) weather in marchRockville (historical) weather in aprilRockville (historical) weather in mayRockville (historical) weather in juneRockville (historical) weather in julyRockville (historical) weather in augustRockville (historical) weather in septemberRockville (historical) weather in octoberRockville (historical) weather in novemberRockville (historical) weather in december

Best time to visit Rockville (historical):

The best time to visit Rockville (historical) during the most sunny months:

  • July — 11.6(h)
  • August — 11.4(h)

The largest precipitation sum in Rockville (historical) is at

  • January — 134(mm)
  • March — 144(mm)
  • August — 115(mm)

    • Weather forecast in the closest to Rockville (historical) admin centers

    Weather forecast in the closest towns to Rockville (historical)

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    Frequently asked questions

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