| KEELE UNIVERSITY ANNUAL SUMMARY 2009 | |||||||||||||
| JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANNUAL | |
| TEMPERATURE (°C) | |||||||||||||
| (i) Monthly Means | 2.5 | 3.7 | 6.5 | 9.7 | 11.4 | 14.4 | 15.3 | 15.8 | 13.5 | 11.0 | 7.6 | 2.5 | 9.5 |
| (ii) Monthly Mean Maxima | 5.2 | 6.1 | 10.1 | 13.8 | 15.5 | 18.6 | 19.0 | 19.6 | 17.1 | 14.1 | 10.3 | 4.8 | 12.9 |
| (iii) Monthly Mean Minima | -0.3 | 1.3 | 2.9 | 5.5 | 7.3 | 10.2 | 11.5 | 11.9 | 9.8 | 7.8 | 4.9 | 0.2 | 6.1 |
| (iv) Mean Daily Range | 5.5 | 4.8 | 7.2 | 8.3 | 8.2 | 8.4 | 7.5 | 7.7 | 7.3 | 6.3 | 5.4 | 4.6 | 6.8 |
| (v) Monthly Absolute Maxima | 9.1 | 10.7 | 14.4 | 17.5 | 23.6 | 25.4 | 26.6 | 23.5 | 22.5 | 18.6 | 15.6 | 11.2 | 26.6 |
| (vi) Monthly Absolute Minima | -4.8 | -3.5 | -1.7 | 1.6 | 3.7 | 5.2 | 7.0 | 7.5 | 6.6 | 3.3 | 0.9 | -5.5 | -5.5 |
| (vii) Air Frosts (Days Screen Min 0°C or less) | 15 | 13 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 46 |
| (viii) Ground Frost (Days Grass Min 0°C or less) | 18 | 16 | 17 | 9 | 2 | 1 | 0 | 0 | 0 | 5 | 7 | 17 | 92 |
| (ix) Lowest Grass Min | -9.0 | -6.4 | -4.8 | -2.9 | -0.6 | 0.0 | 3.1 | 4.9 | 1.3 | -1.6 | -2.2 | -7.9 | -9.0 |
| GROUND TEMPERATURE (°C) | |||||||||||||
| (i) 10cm. Soil Temperature Mean | 3.0 | 3.8 | 5.6 | 9.2 | 11.8 | 15.1 | 16.0 | 15.8 | 13.6 | 11.4 | 8.4 | 4.2 | 9.8 |
| (ii) 20cm. Soil Temperature Mean | 3.3 | 4.1 | 6.2 | 9.6 | 11.9 | 15.1 | 16.2 | 16.1 | - | - | - | - | - |
| (iii) 30cm. Soil Temperature Mean | 3.2 | 3.8 | 6.4 | 9.8 | 12.1 | 15.4 | 16.9 | 16.8 | 14.8 | 12.3 | 8.9 | 4.2 | 10.4 |
| (iv) 50cm. Soil Temperature Mean | 4.5 | 4.8 | 7.1 | 10.0 | 12.1 | 15.0 | 16.6 | 16.5 | - | - | - | - | - |
| (v) 100cm. Soil Temperature Mean | 5.3 | 5.0 | 6.5 | 8.5 | 10.4 | 13.0 | 15.0 | 15.2 | 14.4 | 12.9 | 10.7 | 7.4 | 10.4 |
| RELATIVE HUMIDITY | |||||||||||||
| Mean % (Daytime Mean of 09 hours) | 96 | 94 | 86 | 84 | 79 | 76 | 86 | 85 | 89 | 92 | 93 | 95 | 95.9 |
| PRECIPITATION | |||||||||||||
| (i) Monthly Totals (mm) | 69.8 | 21.6 | 35.5 | 38.7 | 78.1 | 61.2 | 166.7 | 43.5 | 29.4 | 49.2 | 119.0 | 78.8 | 791.5 |
| (iv) No. of Raindays (with 0.2mm or more) | 19 | 16 | 16 | 16 | 20 | 16 | 28 | 20 | 5 | 15 | 28 | 25 | 224 |
| (v) No. of Wetdays (with 1.0mm or more) | 14 | 7 | 11 | 11 | 11 | 9 | 26 | 14 | 4 | 11 | 25 | 16 | 159 |
| (vi) No. of days with 5.0mm or more | 6 | 0 | 2 | 2 | 6 | 4 | 14 | 1 | 2 | 2 | 11 | 7 | 57 |
| (vii) Greatest Fall in One Day (mm) | 11.7 | 4.3 | 8.0 | 8.2 | 25.2 | 16.8 | 19.1 | 25.6 | 20.6 | 14.6 | 12.4 | 10.8 | 25.6 |
| SUNSHINE | |||||||||||||
| No. of Hours | 70.4 | 62.7 | 159.0 | 187.1 | - | - | - | - | - | - | - | - | - |
| WIND | |||||||||||||
| (i) Highest Hourly Velocity (mph) | 19 | 19 | 23 | 19 | - | - | - | - | - | - | - | - | - |
| (ii) Highest Gust (mph) | 49 | 36 | 43 | 38 | - | - | - | - | - | - | - | - | - |
| (iii) Mean Wind Speed (mph) | 6.7 | 7.3 | 8.0 | 6.3 | - | - | - | - | - | - | - | - | - |