Common information
- Country
- Mexico
- Population
- 150 178
Weather, climate, temperature by months in Piedras Negras
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 47 | 39 | 35 | 35 | 38 | 40 | 40 | 42 | 45 | 49 | 47 | 45 | 49 |
| Average high, °C | 36 | 30 | 24 | 20 | 20 | 22 | 26 | 31 | 34 | 37 | 38 | 38 | 30 |
| Average temperature, °C | 28 | 23 | 17 | 13 | 12 | 15 | 19 | 23 | 27 | 30 | 31 | 31 | 22 |
| Average low, °C | 21 | 16 | 10 | 5 | 5 | 7 | 11 | 15 | 20 | 23 | 24 | 24 | 15 |
| Record low, °C | 9 | -3 | -7 | -8 | -10 | -9 | -7 | -1 | 2 | 8 | 2 | 16 | -10 |
| Rain, days | 5 | 6 | 4 | 4 | 5 | 5 | 4 | 5 | 6 | 4 | 4 | 4 | 56 |
| Snow, days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Fog, days | 2 | 4 | 6 | 6 | 6 | 5 | 4 | 3 | 3 | 2 | 1 | 0 | 41 |
| Thunderstorms, days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 3 |
| Snowfall, cm. | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Average precipitation, mm. | 75 | 64 | 23 | 17 | 19 | 20 | 17 | 50 | 87 | 59 | 42 | 35 | 508 |
| Relative humidity, % | 60 | 65 | 65 | 66 | 68 | 63 | 53 | 57 | 61 | 60 | 56 | 56 | 61 |
| Day Length, часов | 13 | 12 | 11 | 11 | 11 | 12 | 12 | 13 | 14 | 14 | 14 | 14 | 13 |
| Dew point, °C | 17 | 13 | 7 | 3 | 3 | 5 | 5 | 11 | 16 | 18 | 18 | 18 | 134 |
| Growing degree-day, °C | 552 | 395 | 195 | 85 | 70 | 131 | 269 | 386 | 531 | 600 | 620 | 620 | 4454 |
| Solar radiation, global, Mj/m2 | 19 | 15 | 12 | 11 | 11 | 14 | 18 | 21 | 22 | 23 | 24 | 22 | 18 |