| Observations at Pitsford Hall | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th | 9th | 10th | 11th | 12th | 13th | 14th | 15th | 16th | 17th | 18th | 19th | 20th | 21st | 22nd | 23rd | 24th | 25th | 26th | 27th | 28th | 29th | 30th | 31st |
| Time of Observations (GMT) | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 7.00 | 9.00 | 9.00 | 9.00 | 8.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 |
| Total Cloud (oktas) | 0 | 3 | 4 | 5 | 1 | 4 | 8 | 8 | 7 | 7 | 8 | 8 | 8 | 8 | 1 | 8 | 8 | 7 | 8 | 6 | 8 | 8 | 0 | 8 | 4 | 4 | 8 | 7 | 8 | 7 | 2 |
| Wind |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Direction | nw | nw | calm | nw | nw | nnw | s | ssw | w | nw | n | sse | ssw | s | e | ne | e | ene | ene | ne | ne | ne | se | se | ssw | ssw | ssw | ssw | ssw | ssw | nw |
| Speed (knots) | 7 | 5 | 0 | 7 | 12 | 7 | 5 | 9 | 5 | 8 | 8 | 6 | 15 | 9 | 6 | 7 | 11 | 15 | 9 | 10 | 8 | 8 | 1 | 4 | 10 | 16 | 19 | 11 | 2 | 12 | 8 |
| Weather | 0 | 3 | 0 | 2 | 2 | 1 | 50 | 63 | 1 | 1 | 2 | 26 | 2 | 25 | 5 | 87 | 10 | 2 | 2 | 25 | 2 | 1 | 4 | 51 | _ | _ | 50 | 2 | 2 | 3 | 1 |
| Visibility | 8 | 9 | 5 | 6 | 8 | 7 | 5 | 4 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 5 | 5 | 7 | 8 | 7 | 7 | 7 | 6 | 3 | _ | _ | 6 | 7 | 7 | 7 | 7 |
| Screen (C) |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Dry Bulb | -1.0 | -1.2 | -3.5 | -1.5 | 1.1 | 2.1 | 3.0 | 8.7 | 8.0 | 5.7 | 3.0 | -0.1 | 1.3 | 2.2 | 4.3 | 2.1 | 1.8 | 2.0 | 5.0 | 4.5 | 3.7 | 2.5 | 3.4 | 5.7 | 11.9 | 12.0 | 11.0 | 9.8 | 8.7 | 12.8 | 10.9 |
| Wet Bulb | -1.6 | -1.9 | -4.0 | -2.4 | 0.1 | 0.8 | 2.7 | 8.5 | 7.5 | 4.5 | 2.0 | -1.6 | 0.0 | 0.9 | 3.2 | 0.5 | 0.7 | 0.4 | 3.4 | 3.9 | 1.9 | 0.9 | 0.6 | 5.5 | 9.8 | 11.0 | 10.6 | 7.5 | 7.3 | 10.9 | 8.5 |
| Max | 5.8 | 6.6 | 5.0 | 5.0 | 7.2 | 6.7 | 8.9 | 12.0 | 10.4 | 6.7 | 4.6 | 3.5 | 5.4 | 5.5 | 8.0 | 3.5 | 3.9 | 4.6 | 7.2 | 7.2 | 5.0 | 9.0 | 10.9 | 13.0 | 11.0 | 14.7 | 12.7 | 13.8 | 13.0 | 16.5 | 14.5 |
| Min | -3.6 | -3.7 | -6.4 | -4.5 | -1.6 | -1.1 | -1.2 | 3.9 | 6.5 | 3.3 | 2.3 | -1.7 | -0.4 | 1.0 | 2.0 | 0.1 | 0.5 | 0.9 | 1.4 | 1.1 | 1.8 | -0.9 | -3.4 | 2.6 | 5.4 | 5.4 | 5.5 | 6.7 | 4.5 | 7.8 | 8.9 |
| Ground Observations (C) |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Grass Min | -9.2 | -8.7 | -7.1 | -9.6 | -7.7 | -7.2 | -2.2 | 1.8 | 4.3 | _ | -2.4 | -5.0 | -2.9 | -2.1 | -0.5 | -2.8 | -1.1 | -1.0 | -0.7 | -3.1 | -1.9 | -4.9 | -7.2 | -3.5 | 2.7 | 6.0 | 8.1 | 2.8 | -0.5 | 3.7 | 5.0 |
| Conc. Min | -4.9 | -5.0 | -5.2 | -5.2 | -3.1 | -3.1 | -0.9 | 1.9 | 5.9 | 2.0 | 2.1 | -1.4 | -0.3 | 1.1 | 1.9 | 0.1 | 0.5 | 0.9 | 1.3 | 0.6 | 1.9 | -1.0 | -5.5 | -2.7 | 5.6 | 8.7 | 10.2 | 5.5 | 3.8 | 7.4 | 8.0 |
| Bare Earth Min | -4.5 | -4.0 | -4.8 | -4.4 | -2.0 | -1.5 | -5.5 | 0.4 | 5.4 | 1.8 | 2.2 | -1.1 | -0.7 | 0.2 | 1.4 | -0.1 | 0.1 | 0.4 | 0.9 | 0.3 | 3.5 | -1.4 | -1.7 | -2.0 | _ | 7.8 | _ | 5.1 | 4.1 | 7.0 | 7.9 |
| Soil/Earth Temperatures (C) |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Surface | 0.3 | 0.1 | 0.4 | 0.3 | 0.3 | 0.3 | 0.2 | 3.1 | 6.5 | 4.6 | 4.3 | 1.6 | 1.8 | 2.1 | 3.4 | 2.6 | 2.2 | 2.1 | 3.9 | 4.6 | 4.0 | 3.2 | 0.5 | 4.6 | 8.0 | 9.5 | 10.6 | 8.4 | 8.3 | 10.1 | 8.8 |
| 5cm | 0.4 | 0.3 | 0.8 | 0.4 | 0.3 | 0.4 | 0.4 | 3.7 | 5.7 | 4.2 | 3.8 | 1.9 | 1.7 | 2.1 | 3.2 | 2.3 | 2.2 | 2.0 | 2.7 | 3.8 | 2.8 | 2.7 | 1.1 | 3.8 | 6.6 | 8.4 | 9.7 | 7.3 | 7.1 | 8.7 | 8.6 |
| 10cm | 0.6 | 0.5 | 1.0 | 0.6 | 0.8 | 0.5 | 0.7 | 3.8 | 5.6 | 4.5 | 4.1 | 2.2 | 2.0 | 2.3 | 3.3 | 2.5 | 2.2 | 2.3 | 2.8 | 3.9 | 3.0 | 2.9 | 1.7 | 4.0 | 6.8 | 8.6 | 9.8 | 7.7 | 7.0 | 8.8 | 8.8 |
| 20cm | 1.1 | 0.9 | 1.8 | 1.6 | 1.5 | 0.9 | 1.1 | 3.2 | 5.2 | 4.6 | 4.6 | 3.6 | 3.1 | 3.1 | 3.5 | 2.7 | 3.0 | 3.2 | 3.3 | 4.1 | 3.2 | 3.1 | 2.7 | 4.2 | 6.0 | 7.8 | 9.0 | 8.1 | 6.9 | 8.5 | 9.0 |
| 30cm | 1.5 | 1.5 | 2.3 | 1.9 | 1.7 | 1.4 | 1.5 | 3.3 | 4.6 | 4.9 | 4.7 | 4.0 | 3.7 | 3.3 | 4.0 | 3.2 | 3.2 | 3.6 | 3.6 | 4.2 | 3.7 | 3.4 | 3.1 | 4.3 | 5.5 | 7.0 | 8.1 | 8.2 | 7.7 | 8.1 | 9.0 |
| 40cm | 3.0 | 1.9 | 3.0 | 2.1 | 1.9 | 1.6 | 1.6 | 3.4 | 4.3 | 4.5 | 4.7 | 4.1 | 3.7 | 3.7 | 3.9 | 3.5 | 3.4 | 3.6 | 3.6 | 4.3 | 4.0 | 3.6 | 3.3 | 4.4 | 5.2 | 6.5 | 7.7 | 7.9 | 7.5 | 7.9 | 8.5 |
| 50cm | 3.6 | 3.1 | 3.3 | 2.6 | 2.4 | 1.8 | 2.0 | 3.4 | 4.2 | 4.3 | 4.8 | 4.5 | 4.2 | 4.1 | 3.9 | 3.9 | 4.0 | 4.0 | 4.0 | 4.3 | 4.1 | 4.0 | 3.4 | 4.4 | 5.1 | 6.4 | 7.3 | 7.8 | 7.6 | 7.6 | 8.0 |
| 100cm | 4.3 | 3.9 | 4.1 | 4.1 | 4.0 | 3.6 | 3.6 | 3.5 | 3.8 | 4.0 | 4.3 | 4.4 | 4.4 | 4.5 | 4.3 | 4.3 | 4.3 | 4.4 | 4.4 | 4.6 | 4.2 | 4.3 | 3.8 | 4.6 | 4.4 | 4.8 | 5.2 | 5.6 | 6.0 | 6.2 | 6.4 |
| State of the Ground |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Without snow | 4 | 4 | _ | _ | _ | 4 | 4 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 4 | 2 | 2 | 2 | 1 | 2 | 1 | 2 | 2 |
| With snow | _ | _ | 7 | 5 | 5 | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ |
| Snow depth | _ | _ | 3 | 1 | 1 | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ |
| State of the Grass | 5 | 5 | 8 | 9 | 7 | 5 | 5 | 3 | 3 | 3 | 1 | 1 | 1 | 3 | 3 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 8 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| State of the Concrete | 0 | 0 | 3 | 0 | 0 | 1 | 1 | 2 | 2 | 2 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 2 | 2 | 1 | 2 | 1 |
| Evaporation (mm) |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Hook-gauge reading | 50.47 | _ | _ | _ | _ | _ | _ | _ | _ | _ | 68.02 | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | 65.16 |
| Total evaporation (less rainfall) | > | > | > | > | > | > | > | > | > | > | 4.55 | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | 18.06 |
| Rainfall (mm) |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Total | tr | 1.6 | _ | tr | tr | 0.3 | 10.1 | 8.2 | 1.1 | 0.8 | 0.1 | _ | 0.3 | 1.3 | tr | 0.3 | tr | _ | tr | _ | _ | _ | 2.9 | 1.3 | 2.0 | 0.4 | 3.0 | 0.8 | 2.8 | 1.5 | 3.2 |
| Duration (hrs) | _ | 0.8 | _ | _ | _ | 0.1 | 8.2 | 6.2 | 1.2 | 1.7 | _ | _ | 0.2 | 1.9 | _ | 2.9 | _ | _ | _ | _ | _ |   | 4.2 | 0.8 | 3.3 | 0.3 | 1.1 | 1.4 | 4.2 | 1.5 | 2.1 |
| Intensity (mean over 24 hrs, mm/hr) | _ | 2.0 | _ | _ | _ | 3.0 | 1.2 | 1.3 | 0.9 | 0.5 | _ | _ | 1.5 | 0.7 | _ | 0.1 | _ | _ | _ | _ | _ | 0.0 | 0.7 | 1.6 | 0.6 | 1.3 | 2.7 | 0.6 | 0.7 | 1.0 | 1.5 |
| Run of Wind |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Miles (over 24 hrs) | 119.91 | 58.83 | 54.64 | 123.57 | 149.4 | 78.48 | 102.09 | 75.7 | 249.47 | 213.38 | 80.86 | 160.4 | 90.44 | 198 | 138.69 | 167.32 | 205.92 | 201.49 | 129.08 | 157.41 | 106.41 | 88.51 | 105.6 | 175.2 | 271.2 | 338.15 | 326.45 | 146.07 | 193.79 | 166.5 | 252 |
| Mean (mph) | 6.5 | 3.2 | 3 | 6.7 | 8.1 | 4.3 | 5.5 | 4.1 | 13.5 | 11.6 | 4.4 | 8.7 | 4.9 | 10.7 | 7.5 | 9.1 | 11.2 | 10.9 | 7 | 8.5 | 5.8 | 4.8 | 5.7 | 9.5 | 14.7 | 18.3 | 17.7 | 7.9 | 10.5 | 9 | 13.7 |
| Gust (mph) | 29 | 19 | 15 | 22 | 29 | 20 | 21 | 20 | 26 | 36 | 19 | 21 | 24 | <15 | 26 | 29 | 32 | 36 | 22 | 24 | 23 | 20 | 23 | 20 | 28 | 37 | 40 | 39 | 32 | 39 | 28 |
| Sunshine (hrs) | 8.3 | 1.2 | 5.8 | 7.0 | 7.0 | 2.7 | 0.0 | 0.3 | 1.4 | 0.6 | 0.6 | 0.0 | 1.1 | 1.0 | 5.1 | 0.0 | 0.4 | 0.6 | 0.0 | 0.0 | 0.0 | 7.1 | 6.7 | _ | _ | 0.5 | 0.4 | 5.8 | 2.5 | 5.5 | 0.4 |
| Statistics |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Saturated |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| VP(Twb) | 0.543 | 0.532 | 0.454 | 0.512 | 0.615 | 0.648 | 0.742 | 1.11 | 1.037 | 0.843 | 0.706 | 0.543 | 0.611 | 0.652 | 0.769 | 0.634 | 0.643 | 0.629 | 0.78 | 0.808 | 0.701 | 0.652 | 0.638 | 0.904 | 1.212 | 1.313 | 1.279 | 1.037 | 1.023 | 1.305 | 1.11 |
| VP | 0.503 | 0.485 | 0.421 | 0.452 | 0.548 | 0.56 | 0.722 | 1.096 | 1.003 | 0.762 | 0.639 | 0.442 | 0.524 | 0.564 | 0.695 | 0.526 | 0.569 | 0.521 | 0.672 | 0.767 | 0.58 | 0.544 | 0.45 | 0.89 | 1.069 | 1.245 | 1.252 | 0.881 | 0.928 | 1.176 | 0.947 |
| Saturated |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| VP | 0.568 | 0.56 | 0.472 | 0.547 | 0.662 | 0.711 | 0.758 | 1.126 | 1.073 | 0.916 | 0.758 | 0.607 | 0.671 | 0.716 | 0.831 | 0.711 | 0.696 | 0.706 | 0.873 | 0.843 | 0.797 | 0.732 | 0.78 | 0.916 | 1.394 | 1.403 | 1.313 | 1.212 | 1.126 | 1.479 | 1.305 |
| RH % | 88.6 | 86.6 | 89.2 | 82.6 | 82.8 | 78.8 | 95.3 | 97.3 | 93.5 | 83.2 | 84.3 | 72.8 | 78.1 | 78.8 | 83.6 | 74 | 81.8 | 73.8 | 77 | 91 | 72.8 | 74.3 | 57.7 | 97.2 | 76.7 | 88.7 | 95.4 | 72.7 | 82.4 | 79.5 | 72.6 |
|   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Dew Point (C) | -2.6 | -3.1 | -5 | -4.1 | -1.5 | -1.2 | 2.3 | 8.3 | 7 | 3.1 | 0.6 | -4.4 | -2.1 | -1.1 | 1.8 | -2 | -1 | -2.2 | 1.3 | 3.2 | -0.7 | -1.6 | -4.1 | 5.3 | 7.9 | 10.2 | 10.3 | 5.1 | 5.9 | 9.3 | 6.2 |
| Pressure (mb) | 1006.0 | 1001.3 | 998.7 | 1001.1 | 1008.0 | 1018.4 | 1016.8 | 999.8 | 998.9 | 998.0 | 1018.6 | 1031.3 | 1029.1 | 1021.3 | 1023.7 | 1028.7 | 1028.7 | 1024.6 | 1018.7 | 1014.4 | 1015.0 | 1015.2 | 1011.3 | 990.3 | 999.8 | 1002.9 | 990.8 | 995.3 | 1005.1 | 995.2 | 1003.7 |
| Days with |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| thunder | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ |
| hail<5mm | _ | _ | _ | 1 | 1 | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ |
| hail>/=5mm | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ |
| snow | 1 | 1 | _ | _ | _ | 1 | _ | _ | _ | _ | 1 | 1 | _ | _ | _ | 1 | 1 | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ |
| fog | _ | _ | _ | _ | _ | _ | _ | 1 | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ |