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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 | 43 | 41 | 41 | 40 | 40 | 42 | 43 | 47 | 48 | 43 | 42 | 41 | 48 |
| Average high, °C | 33 | 37 | 35 | 31 | 31 | 34 | 37 | 40 | 39 | 36 | 33 | 32 | 35 |
| Average temperature, °C | 28 | 30 | 27 | 24 | 24 | 27 | 30 | 33 | 33 | 31 | 28 | 27 | 29 |
| Average low, °C | 25 | 24 | 20 | 17 | 17 | 20 | 24 | 27 | 28 | 26 | 24 | 23 | 23 |
| Record low, °C | 17 | 17 | 10 | 7 | 7 | 10 | 11 | 16 | 18 | 18 | 17 | 20 | 7 |
| Rain, days | 8 | 2 | 1 | 0 | 0 | 0 | 1 | 1 | 4 | 6 | 9 | 11 | 43 |
| Thunderstorms, days | 8 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 6 | 8 | 11 | 11 | 47 |
| Average precipitation, mm. | 91 | 15 | 0 | 0 | 0 | 0 | 3 | 6 | 32 | 76 | 145 | 190 | 558 |
| Relative humidity morning, % | 85 | 67 | 42 | 35 | 31 | 26 | 26 | 36 | 59 | 72 | 82 | 88 | 54 |
| Relative humidity evening, % | 48 | 27 | 16 | 15 | 13 | 11 | 12 | 16 | 27 | 38 | 52 | 57 | 28 |
| Wind speed, km/h | 12 | 9 | 16 | 17 | 17 | 17 | 17 | 16 | 14 | 14 | 14 | 12 | 15 |
| Day Length, часов | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 12 |
| Dew point, °C | 22 | 16 | 6 | 2 | 0 | 0 | 2 | 8 | 17 | 20 | 21 | 22 | 136 |
| Growing degree-day, °C | 533 | 620 | 500 | 431 | 431 | 471 | 620 | 683 | 706 | 617 | 551 | 517 | 6679 |
| Solar radiation, global, Mj/m2 | 22 | 22 | 21 | 19 | 20 | 23 | 25 | 25 | 25 | 24 | 22 | 21 | 22 |