| 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 | 8.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 8.00 | 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 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 |
| Total Cloud (oktas) | 3 | 3 | 1 | 8 | 8 | 5 | 8 | 0 | 1 | 3 | 3 | 9 | 8 | 7 | 8 | 0 | 2 | 1 | 8 | 8 | 0 | 0 | 7 | 7 | 8 | 8 | 1 | 5 | 0 | 7 | 7 |
| Wind |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Direction | w | nw | nw | ssw | ne | se | se | w | se | s | ssw | calm | w | s | se | nw | w | sw | ssw | ssw | wsw | ssw | s | w | s | wsw | sw | wnw | wnw | ne | nnw |
| Speed (knots) | 8 | 11 | 10 | 9 | 9 | 1 | 19 | 7 | 16 | 4 | 7 | 0 | 5 | 1 | 5 | 5 | 5 | 6 | 8 | 20 | 9 | 4 | 15 | 6 | 12 | 8 | 9 | 3 | 4 | 10 | 9 |
| Weather | 1 | 7 | 2 | 25 | 63 | 1 | 25 | 0 | 1 | 1 | 2 | 43 | 1 | 3 | 3 | 0 | 0 | 1 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 63 | 2 | 2 | 0 | 2 | 2 |
| Visibility | 7 | 2 | 7 | 7 | 5 | 8 | 6 | 8 | 6 | 8 | 7 | 3 | 6 | 6 | 6 | 8 | 8 | 7 | 7 | 5 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Screen (C) |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Dry Bulb | 11.5 | 9.1 | 8.1 | 6.4 | 12.5 | 8.9 | 16.0 | 11.0 | 11.6 | 14.5 | 10.6 | 8.4 | 15.5 | 13.9 | 14.2 | 9.9 | 9.0 | 11.2 | 9.6 | 13.6 | 8.0 | 7.2 | 9.9 | 10.6 | 5.8 | 11.5 | 7.0 | 3.5 | 1.5 | 3.6 | 3.8 |
| Wet Bulb | 8.9 | 7.3 | 5.1 | 5.1 | 12.5 | 8.0 | 15.0 | 9.5 | 10.0 | 13.0 | 9.6 | 8.3 | 14.6 | 13.1 | 14.0 | 8.0 | 8.0 | 10.0 | 8.8 | 13.2 | 6.4 | 6.0 | 8.9 | 8.9 | 5.1 | 11.3 | 5.6 | 3.2 | 0.2 | 3.1 | 3.1 |
| Max | 13.7 | 13.8 | 9.8 | 14.5 | 13.7 | 16.0 | 16.5 | 16.0 | 16.5 | 18.4 | 18.4 | 21.0 | 16.9 | 17.0 | 17.4 | 12.1 | 14.4 | 14.0 | 13.6 | 15.6 | 11.6 | 12.0 | 13.6 | 12.5 | 13.9 | 12.2 | 9.5 | 6.8 | 6.1 | 8.0 | 8.0 |
| Min | 8.1 | 5.7 | 5.4 | 2.5 | 6.2 | 2.4 | 9.0 | 7.1 | 5.2 | 10.0 | 9.6 | 6.7 | 8.4 | 10.1 | 10.2 | 7.0 | 4.5 | 6.0 | 6.8 | 9.6 | 6.4 | 3.0 | 6.0 | 9.0 | 3.5 | 5.6 | 3.5 | 0.1 | -2.7 | 0.1 | 1.0 |
| Black Bulb (Globe, C) | 15.3 | 14.8 | 14.2 | 6.6 | 13.9 | 13.3 | 16.5 | 16.3 | 15.2 | 17 | 12.8 | 8.8 | 17.5 | 15 | 14.5 | 12.8 | 15.5 | _ | _ | _ | _ | _ | 9.9 | 15.3 | 5.9 | 11.6 | 9.3 | 5.1 | 0.9 | 4.4 | 4.4 |
| Grass & Concrete |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| State of Grass | 0 | 0 | 0 | 0 | 3 | 4 | 3 | 1 | 1 | 0 | 0 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 1 | 4 | 7 | 4 | 4 |
| State of Concrete | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 3 | 0 | 1 |
| Concrete Min (C) | 6.5 | 2.1 | 3.0 | 0.1 | 5.0 | -0.5 | 7.5 | 4.4 | 2.5 | 9.0 | 7.1 | 5.6 | 7.0 | 8.3 | 8.3 | 4.5 | 1.6 | 4.4 | 5.2 | 7.9 | 4.8 | 0.1 | 4.4 | 6.9 | 1.3 | 4.1 | 0.6 | -2.1 | -5.3 | -2.4 | -1.5 |
| Evaporation |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   | |
| Piche (ml) | 3.2 | 2.8 | 2.5 | 2.2 | 1 | 0.9 | 1.1 | 1.8 | 2.9 | 3.8 | 2.3 | 1.6 | 2.3 | 0.4 | 0.9 | 2 | > | > | > | > | > | 13.6 | 3.7 | 2 | 2.8 | 1.1 | 1.3 | 0.7 | 1 | 0.9 | 0.9 |
| Pan (over interval, mm) | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | > | 24.40 |
| Rainfall |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Total (mm) | tr | 1.2 | tr | 15.4 | 9.1 | 0.3 | 1.3 | 0.1 | _ | _ | _ | _ | _ | 0.9 | 0.4 | _ | _ | _ | _ | 4.8 | _ | _ | 0.4 | tr | 6.8 | 0.3 | tr | 8.7 | 0.1 | 0.1 | tr |
| Duration (hrs) | _ | 3.6 | _ | 9.8 | 1.9 | 0.5 | 0.8 | _ | _ | _ | _ | _ | _ | 1.0 | 0.8 | _ | _ | _ | _ | 5.8 | _ | _ | 1.1 | _ | 5.9 | 1.0 | _ | 6.0 | _ | 0.1 | _ |
| Intensity (mean over 24 hrs, mm/hr) | _ | 0.3 | _ | 1.6 | 4.8 | 0.6 | 1.6 | _ | _ | _ | _ | _ | _ | 0.9 | 0.5 | _ | _ | _ | _ | 0.8 | _ | _ | 0.4 | _ | 1.2 | 0.3 | _ | 1.5 | _ | 1.0 | _ |
| Run of Wind |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Miles (over 24 hrs) | 165.14 | 138.12 | 106.93 | 315.55 | 116.28 | 55.48 | 110.77 | 40.44 | 149.94 | 171.82 | 156.69 | 30.19 | 18.58 | 90.9 | 133.38 | 97.44 | 73.13 | 138.24 | 355.22 | 237.48 | 127.22 | 148.22 | 307.7 | 94.36 | 265.03 | 87.71 | 81.53 | 75.76 | 71.35 | 116.31 | 92.55 |
| Mean (mph) | 8.9 | 7.5 | 5.8 | 17.1 | 6.3 | 3 | 6 | 2.2 | 8.1 | 9.3 | 8.5 | 1.6 | 1 | 4.9 | 7.2 | 5.3 | 4 | 7.5 | 19.2 | 12.9 | 6.9 | 8 | 16.7 | 5.1 | 14.4 | 4.8 | 4.4 | 4.1 | 3.9 | 6.3 | 5 |
| Gust (mph) | 37 | 30 | 32 | 32 | 28 | 18 | 28 | 16 | 22 | 23 | 16 | 15 | 19 | 20 | 26 | 30 | 15 | 23 | 39 | 37 | 26 | 29 | 38 | 17 | 30 | 21 | 25 | 25 | 16 | 22 | 24 |
| Sunshine (hrs) | 6.0 | 5.6 | 4.6 | 0.3 | 0.6 | 1.0 | 1.2 | 7.0 | 6.5 | 5.7 | 7.3 | 6.0 | 1.0 | 0.5 | 1.2 | 5.0 | 7.3 | 4.4 | 0.1 | 0.0 | 8.1 | 7.9 | 0.0 | 3.1 | 0.2 | 0.0 | 5.6 | 2.5 | 3.6 | 3.3 | 4.5 |
| Humidity Statistics |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Saturated |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| VP(Twb) | 1.141 | 1.023 | 0.879 | 0.879 | 1.45 | 1.073 | 1.706 | 1.188 | 1.229 | 1.499 | 1.196 | 1.095 | 1.663 | 1.508 | 1.599 | 1.073 | 1.073 | 1.229 | 1.133 | 1.518 | 0.962 | 0.936 | 1.141 | 1.141 | 0.879 | 1.34 | 0.91 | 0.769 | 0.62 | 0.763 | 0.763 |
| VP | 0.964 | 0.901 | 0.676 | 0.791 | 1.45 | 1.012 | 1.638 | 1.086 | 1.12 | 1.397 | 1.128 | 1.088 | 1.601 | 1.453 | 1.585 | 0.944 | 1.005 | 1.147 | 1.079 | 1.491 | 0.854 | 0.855 | 1.073 | 1.025 | 0.832 | 1.326 | 0.815 | 0.749 | 0.533 | 0.729 | 0.716 |
| Saturated |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| VP | 1.358 | 1.156 | 1.081 | 0.962 | 1.45 | 1.141 | 1.819 | 1.313 | 1.367 | 1.652 | 1.279 | 1.103 | 1.762 | 1.589 | 1.62 | 1.22 | 1.149 | 1.331 | 1.196 | 1.558 | 1.073 | 1.016 | 1.22 | 1.279 | 0.923 | 1.358 | 1.002 | 0.785 | 0.681 | 0.791 | 0.802 |
| Rel. Humidity | 71 | 77.9 | 62.5 | 82.2 | 100 | 88.7 | 90 | 82.7 | 81.9 | 84.6 | 88.2 | 98.6 | 90.9 | 91.4 | 97.8 | 77.4 | 87.5 | 86.2 | 90.2 | 95.7 | 79.6 | 84.2 | 88 | 80.1 | 90.1 | 97.6 | 81.3 | 95.4 | 78.3 | 92.2 | 89.3 |
|   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Dew Point (C) | 6.4 | 5.5 | 1.4 | 3.6 | 12.5 | 7.1 | 14.4 | 8.2 | 8.6 | 11.9 | 8.7 | 8.2 | 14 | 12.5 | 13.9 | 6.1 | 7 | 9 | 8.1 | 12.9 | 4.7 | 4.7 | 8 | 7.3 | 4.3 | 11.1 | 4 | 2.8 | -1.9 | 2.5 | 2.2 |
| Pressure (mb) | 998.4 | 1003.6 | 1011.7 | 1014.5 | 994.5 | 1013.3 | 1003.7 | 1018.4 | 1031.6 | 1028.2 | 1025.0 | 1024.8 | 1016.0 | 1020.6 | 1010.8 | 1014.6 | 1021.5 | 1018.2 | 1019.0 | 1004.3 | 1010.0 | 1021.0 | 1020.4 | 1020.0 | 1029.5 | 1015.4 | 1010.5 | 1011.7 | 1011.5 | 997.9 | 1009.0 |
| Days with |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| thunder | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ |
| hail<5mm | _ | 1 | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | 1 | 1 | _ | _ | _ |
| hail>/=5mm | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ |
| snow | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | 1 | _ | _ | _ |
| fog | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | 1 | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ |
| gales | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ | _ |
| *Some readings obtained from the |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| automatic weather station |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |