Daily Observations at Hyslop Exp. Stn., Corvallis
August 2002
Bold = new daily record set (old record, year)
| Day | Max Temp (F) | Min Temp (F) | Precip (in) | 2 in soil Max | 2 in soil Min | 4 in soil Max | 4 in soil Min | Heating Deg. Days | Cooling Deg. Days | Growing Deg. Days | Evaporation (in.) |
| 01 | 79 | 49 | 0 | 97 | 67 | 90 | 71 | 1 | 0 | 14 | .371 |
| 2 | 84 | 46 | 0 | 103 | 65 | 94 | 71 | 0 | 0 | 15 | .316 |
| 3 | 76 | 46 | 0 | 98 | 65 | 89 | 70 | 4 | 0 | 11 | .365 |
| 4 | 77 | 50 | .01 | 100 | 65 | 90 | 70 | 1 | 0 | 14 | .284 |
| 5 | 70 | 44 | .03 | 87 | 63 | 80 | 69 | 8 | 0 | 7 | .183 |
| 6 | 72 | 43 | .04 | 90 | 62 | 80 | 67 | 7 | 0 | 8 | .172 |
| 7 | 76 | 48 | 0 | 99 | 63 | 88 | 66 | 3 | 0 | 12 | .275 |
| 8 | 79 | 47 | 0 | 99 | 64 | 89 | 67 | 2 | 0 | 13 | .302 |
| 9 | 84 | 53 | 0 | 101 | 65 | 90 | 68 | 0 | 4 | 19 | .316 |
| 10 | 89 | 56 | 0 | 105 | 68 | 92 | 70 | 0 | 8 | 23 | .324 |
| 11 | 86 | 50 | 0 | 104 | 68 | 93 | 74 | 0 | 3 | 18 | .317 |
| 12 | 87 | 56 | 0 | 102 | 62 | 92 | 72 | 0 | 7 | 22 | .252 |
| 13 | 96 | 63 | 0 | 105 | 69 | 95 | 74 | 0 | 15 | 30 | .205 |
| 14 | 104 | 56 | 0 | 108 | 74 | 97 | 78 | 0 | 15 | 30 | .505 |
| 15 | 98 | 46 | 0 | 108 | 68 | 97 | 75 | 0 | 7 | 22 | .210 |
| 16 | 92 | 43 | 0 | 105 | 67 | 95 | 75 | 0 | 3 | 18 | .294 |
| 17 | 85 | 47 | 0 | 104 | 67 | 91 | 73 | 0 | 1 | 16 | .276 |
| 18 | 88 | 46 | 0 | 104 | 66 | 93 | 71 | 0 | 2 | 17 | .299 |
| 19 | 81 | 44 | 0 | 98 | 65 | 90 | 70 | 2 | 0 | 13 | .299 |
| 20 | 81 | 49 | 0 | 98 | 64 | 89 | 70 | 0 | 0 | 15 | .184 |
| 21 | 74 | 44 | .21 | 82 | 61 | 78 | 65 | 6 | 0 | 9 | 0 |
| 22 | 72 | 49 | 0 | 92 | 62 | 84 | 64 | 4 | 0 | 11 | .246 |
| 23 | 83 | 49 | 0 | 96 | 61 | 85 | 65 | 0 | 1 | 16 | .218 |
| 24 | 86 | 49 | 0 | 101 | 65 | 90 | 68 | 0 | 3 | 18 | .225 |
| 25 | 86 | 52 | 0 | 100 | 67 | 90 | 69 | 0 | 4 | 19 | .230 |
| 26 | 75 | 57 | 0 | 90 | 71 | 81 | 71 | 0 | 1 | 16 | .155 |
| 27 | 78 | 52 | 0 | 97 | 67 | 88 | 71 | 0 | 0 | 15 | .283 |
| 28 | 88 | 59 | 0 | 98 | 66 | 89 | 69 | 0 | 9 | 24 | .289 |
| 29 | 97 | 55 | 0 | 102 | 71 | 93 | 73 | 0 | 11 | 26 | .370 |
| 30 | 84 | 42 | 0 | 99 | 63 | 89 | 70 | 2 | 0 | 13 | .255 |
| 31 | 77 | 45 | 0 | 97 | 64 | 87 | 68 | 4 | 0 | 11 | .234 |
| Average/Total | 83.4 | 49.5 | 0.29 | 99.0 | 65.6 | 89.3 | 70.1 | 44 | 94 | 515 | 8.254 |
| Departure | 2.3 | -1.8 | -0.58 |   |   |   |   |   |   |   |   |