Daily Observations at Hyslop Exp. Stn., Corvallis
June 2003
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.) |
| 1 | 73 | 43 | 0 | 94 | 61 | 84 | 61 | 7 | 0 | 8 | .198 |
| 2 | 75 | 46 | 0 | 94 | 59 | 85 | 62 | 4 | 0 | 11 | .271 |
| 3 | 73 | 47 | 0 | 90 | 61 | 84 | 64 | 5 | 0 | 10 | .278 |
| 4 | 86 | 52 | 0 | 93 | 64 | 86 | 65 | 0 | 4 | 19 | .354 |
| 5 | 89 | 61 | 0 | 96 | 63 | 89 | 65 | 0 | 10 | 25 | .396 |
| 6 | 95 | 56 | 0 | 100 | 69 | 94 | 70 | 0 | 11 | 26 | .444 |
| 7 | 95 | 59 | 0 | 103 | 70 | 95 | 72 | 0 | 12 | 27 | .273 |
| 8 | 88 | 58 | 0 | 102 | 71 | 94 | 72 | 0 | 8 | 23 | .248 |
| 9 | 87 | 44 | 0 | 100 | 67 | 92 | 71 | 0 | 1 | 16 | .314 |
| 10 | 70 | 45 | 0 | 88 | 66 | 82 | 69 | 7 | 0 | 8 | .150 |
| 11 | 72 | 45 | 0 | 90 | 65 | 82 | 67 | 6 | 0 | 9 | .250 |
| 12 | 75 | 44 | 0 | 94 | 64 | 87 | 68 | 5 | 0 | 10 | .145 |
| 13 | 67 | 52 | .07 | 79 | 65 | 75 | 67 | 5 | 0 | 10 | .039 |
| 14 | 67 | 46 | .09 | 79 | 64 | 74 | 64 | 8 | 0 | 7 | .190 |
| 15 | 72 | 43 | 0 | 94 | 64 | 84 | 61 | 7 | 0 | 8 | .228 |
| 16 | 77 | 44 | 0 | 96 | 62 | 88 | 63 | 4 | 0 | 11 | .257 |
| 17 | 85 | 49 | 0 | 97 | 63 | 90 | 67 | 0 | 2 | 17 | .268 |
| 18 | 84 | 47 | 0 | 99 | 66 | 91 | 70 | 0 | 1 | 16 | .339 |
| 19 | 69 | 50 | 0 | 82 | 65 | 78 | 68 | 5 | 0 | 10 | .137 |
| 20 | 68 | 49 | 0 | 82 | 65 | 76 | 67 | 6 | 0 | 9 | .138 |
| 21 | 67 | 48 | .01 | 79 | 64 | 75 | 65 | 7 | 0 | 8 | .152 |
| 22 | 66 | 45 | .15 | 78 | 60 | 71 | 63 | 9 | 0 | 6 | .149 |
| 23 | 65 | 47 | .04 | 76 | 61 | 71 | 61 | 9 | 0 | 6 | .079 |
| 24 | 63 | 46 | T | 73 | 59 | 70 | 62 | 10 | 0 | 5 | .114 |
| 25 | 75 | 48 | 0 | 92 | 60 | 84 | 60 | 3 | 0 | 12 | .325 |
| 26 | 84 | 48 | 0 | 96 | 62 | 87 | 64 | 0 | 1 | 16 | .337 |
| 27 | 91 | 59 | 0 | 100 | 67 | - | - | 0 | 10 | 25 | .377 |
| 28 | 91 | 56 | 0 | 104 | 71 | 94 | 73 | 0 | 9 | 24 | .393 |
| 29 | 96 | 57 | 0 | 104 | 72 | 95 | 72 | 0 | 12 | 27 | .408 |
| 30 | 85 | 59 | 0 | 102 | 73 | 95 | 74 | 0 | 7 | 22 | .375 |
| Average/Total | 78.3 | 49.8 | 0.36 | 91.9 | 64.8 | 81.7 | 64.2 | 107 | 88 | 431 | 7.626 |
| Departure | 5.2 | 1.2 | -0.87 |   |   |   |   |   |   |   |   |