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Niger
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 42 | 44 | 42 | 38 | 42 | 45 | 47 | 48 | 46 | 47 | 41 | 43 | 48 |
| Average high, °C | 35 | 37 | 35 | 31 | 30 | 34 | 37 | 40 | 40 | 38 | 35 | 33 | 35 |
| Average temperature, °C | 30 | 31 | 28 | 25 | 24 | 27 | 31 | 33 | 35 | 33 | 30 | 29 | 30 |
| Average low, °C | 25 | 25 | 21 | 18 | 18 | 20 | 24 | 27 | 28 | 27 | 26 | 25 | 24 |
| Record low, °C | 20 | 16 | 15 | 9 | 8 | 6 | 10 | 13 | 18 | 20 | 18 | 20 | 6 |
| Rain, days | 4 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 2 | 3 | 6 | 8 | 28 |
| Thunderstorms, days | 6 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | 6 | 9 | 9 | 36 |
| Average precipitation, mm. | 83 | 15 | 1 | 0 | 0 | 0 | 2 | 5 | 23 | 61 | 132 | 174 | 496 |
| Relative humidity morning, % | 82 | 61 | 41 | 35 | 32 | 29 | 29 | 36 | 55 | 67 | 79 | 86 | 53 |
| Relative humidity evening, % | 43 | 23 | 15 | 15 | 15 | 13 | 14 | 15 | 24 | 33 | 46 | 52 | 26 |
| Wind speed, km/h | 8 | 8 | 9 | 9 | 12 | 12 | 12 | 9 | 9 | 9 | 9 | 8 | 10 |
| Day Length, часов | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 |
| Dew point, °C | 21 | 15 | 6 | 1 | 0 | 1 | 3 | 8 | 16 | 20 | 21 | 22 | 134 |
| Growing degree-day, °C | 600 | 620 | 558 | 474 | 448 | 494 | 620 | 600 | 620 | 600 | 620 | 594 | 6848 |
| Solar radiation, global, Mj/m2 | 22 | 23 | 21 | 19 | 20 | 23 | 25 | 26 | 26 | 25 | 23 | 22 | 23 |