Table 1 Table showing Njoro River watershed annual weather pattern (obtained from Egerton University weather station)

Avg. Tempt (°C)

16.9

17.8

17.8

16.8

16

15.2

14.5

14.5

15.3

15.8

15.5

15.9

Min. Tempt°C

11.5

11.6

11.8

11.7

11.2

10.3

9.7

9.7

9.7

10.7

11.3

11.4

Max. Tempt °C

22.6

24.2

24.1

22.3

21.4

20.5

19.6

19.8

21

21.3

20.4

21

Precipitation/rainfall (mm)

21

21

53

109

74

53

61

78

53

94

100

45

Humidity (%)

52

45

51

66

69

69

71

72

65

66

72

63

Rainy days (Nos.)

3

2

5

9

7

7

9

9

6

9

11

6