Common information
- Country
- United States
- Population
- 61 209
Ratings
Main factors in Rockville
- Ecology
- 4.9
- Medicine
- 7.7
- Climate
- 8
- Safety
- 6.7
- Traffic
- 3.9
- Live quality
- 6.5
Weather, climate, temperature by months in Rockville
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 37 | 35 | 31 | 28 | 26 | 27 | 33 | 35 | 37 | 38 | 39 | 41 | 41 |
| Average high, °C | 27 | 21 | 15 | 9 | 7 | 9 | 14 | 20 | 25 | 30 | 32 | 31 | 20 |
| Average temperature, °C | 21 | 14 | 9 | 3 | 1 | 3 | 7 | 13 | 18 | 23 | 25 | 25 | 14 |
| Average low, °C | 15 | 8 | 3 | -2 | -4 | -3 | 1 | 6 | 11 | 16 | 19 | 19 | 7 |
| Record low, °C | -1 | -7 | -13 | -19 | -24 | -23 | -15 | -7 | -3 | 3 | 7 | 5 | -24 |
| Snow, days | 0 | 0 | 0 | 1 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 8 |
| Snowfall, cm. | 0 | 0 | 3 | 12 | 12 | 16 | 12 | 0 | 0 | 0 | 0 | 0 | 55 |
| Average precipitation, mm. | 94 | 78 | 87 | 88 | 67 | 78 | 97 | 90 | 106 | 104 | 110 | 120 | 1119 |
| Relative humidity, % | 80 | 80 | 73 | 73 | 69 | 67 | 64 | 64 | 75 | 75 | 77 | 80 | 73 |
| Wind speed, km/h | 1 | 2 | 3 | 5 | 5 | 6 | 5 | 4 | 1 | 1 | 1 | 1 | 3 |
| Day Length, часов | 13 | 12 | 11 | 10 | 10 | 11 | 12 | 14 | 15 | 15 | 15 | 14 | 13 |
| Dew point, °C | 15 | 9 | 2 | -2 | -4 | -4 | 1 | 6 | 14 | 17 | 20 | 19 | 94 |
| Growing degree-day, °C | 591 | 267 | 74 | 14 | 9 | 12 | 64 | 225 | 469 | 724 | 877 | 831 | 4157 |
| Atmosphere pressure, bar | 1017 | 1016 | 1021 | 1019 | 1018 | 1016 | 1017 | 1015 | 1016 | 1013 | 1015 | 1015 | 12196 |
| Solar radiation, global, Mj/m2 | 15 | 12 | 8 | 6 | 7 | 10 | 13 | 17 | 19 | 20 | 20 | 18 | 14 |