Best year time to visit Rockville

General weather information about Rockville

Average annual temperature is 12.9 °C

Absolute maximum temperature: 35.1 °C

Absolute minimum temperature: -12 °C

Number of sunny days: 187

Number of rainy days: 173

Number of snow days: 5

Average annual precipitation: 999 mm

Look at detailed online map of Rockville

* Weather data for Rockville United States is based on climate observations for 2023 year

Rockville air temperature forecast for each month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Absolute maximum temperature (°C) 17.5 19.4 20.2 26.3 30.5 32.8 35.1 33.9 31.6 29 23.7 15.6
Average daytime temperature (°C) 6.1 10.2 10.8 18.4 23.9 28.2 29.4 28.2 25.9 18.9 12.2 8.4
Average temperature (°C) 2.3 3.7 5 11.4 17.7 21.9 23.9 23 20.3 13.9 6.7 4.3
Average night temperature (°C) -0.7 -0.8 0.5 5.7 11.5 16 18.8 18.2 15.5 9.8 2.3 1.4
Absolute minimum temperature (°C) -11.6 -12 -7.8 -2.9 2.5 9.5 14.9 12.6 11 -3.3 -8.7 -7.4

Rockville monthly weather indicators

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daylight maximum duration (h) 10.2 11.3 12.6 13.9 14.8 15 14.9 14.3 13.1 11.8 10.5 9.6
Daylight mean duration (h) 9.7 10.7 12 13.3 14.4 14.9 14.7 13.7 12.5 11.2 10 9.4
Daylight minimum duration (h) 9.4 10.2 11.3 12.7 13.9 14.8 14.3 13.1 11.8 10.6 9.6 9.4
Sunshine mean duration (h) 5.1 7.8 7.5 9.1 10.9 11.6 12.3 10.8 10.2 7.6 7.9 5.9
Precipitation (mm) 96 91 169 103 38 60 109 126 32 94 31 51
Sunny days 11 15 13 19 18 19 9 13 17 16 22 15
Rainy days 17 12 17 11 13 11 22 18 13 15 8 16
Snow days 3 1 1

Rockville - weather forecast by months

January February March April May June July August September October November December

Best time to visit Rockville:

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

  • June — 11.6(h)
  • July — 12.3(h)

The largest precipitation sum in Rockville is at

  • March — 169(mm)
  • July — 109(mm)
  • August — 126(mm)

Weather forecast in the closest to Rockville admin centers