Daily Observations at Hyslop Exp. Stn., Corvallis
July 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.) |
| 01 | 75 | 50 | 0 | 99 | 70 | 91 | 73 | 2 | 0 | 13 | .306 |
| 2 | 73 | 46 | 0 | 92 | 64 | 86 | 69 | 5 | 0 | 10 | .251 |
| 3 | 78 | 43 | 0 | 97 | 65 | 90 | 68 | 4 | 0 | 11 | .311 |
| 04 | 81 | 47 | 0 | 101 | 66 | 91 | 69 | 1 | 0 | 14 | .311 |
| 05 | 83 | 49 | 0 | 102 | 67 | 93 | 69 | 0 | 1 | 16 | .305 |
| 06 | 81 | 54 | 0 | 100 | 70 | 93 | 71 | 0 | 3 | 18 | .326 |
| 07 | 84 | 47 | 0 | 102 | 69 | 94 | 73 | 0 | 1 | 16 | .328 |
| 08 | 84 | 57 | 0 | 103 | 69 | 94 | 72 | 0 | 6 | 21 | .362 |
| 9 | 76 | 47 | 0 | 93 | 67 | 80 | 71 | 3 | 0 | 12 | .083 |
| 10 | 90 | 50 | 0 | 106 | 66 | 94 | 70 | 0 | 5 | 20 | .435 |
| 11 | 87 | 49 | 0 | 104 | 70 | 94 | 73 | 0 | 3 | 18 | .311 |
| 12 | 88 | 50 | 0 | 105 | 70 | 95 | 72 | 0 | 4 | 19 | .327 |
| 13 | 84 | 58 | 0 | 101 | 70 | 91 | 73 | 0 | 6 | 21 | .346 |
| 14 | 79 | 46 | 0 | 97 | 68 | 90 | 73 | 2 | 0 | 13 | .286 |
| 15 | 86 | 52 | 0 | 104 | 68 | 95 | 71 | 0 | 4 | 19 | .280 |
| 16 | 81 | 59 | 0 | 103 | 76 | 94 | 74 | 0 | 5 | 20 | .347 |
| 17 | 81 | 52 | 0 | 103 | 70 | 94 | 75 | 0 | 2 | 17 | .303 |
| 18 | 87 | 49 | 0 | 105 | 70 | 95 | 73 | 0 | 3 | 18 | .329 |
| 19 | 92 | 50 | 0 | 107 | 71 | 97 | 74 | 0 | 6 | 21 | .405 |
| 20 | 94 | 52 | 0 | 109 | 71 | 96 | 75 | 0 | 8 | 23 | .384 |
| 21 | 92 | 62 | 0 | 108 | 73 | 98 | 76 | 0 | 12 | 27 | .359 |
| 22 | 96 | 58 | 0 | 109 | 76 | 99 | 79 | 0 | 12 | 27 | .390 |
| 23 | 95 | 52 | 0 | 108 | 73 | 99 | 79 | 0 | 9 | 24 | .401 |
| 24 | 88 | 50 | 0 | 106 | 71 | 96 | 77 | 0 | 4 | 19 | .420 |
| 25 | 85 | 49 | 0 | 104 | 70 | 94 | 74 | 0 | 2 | 17 | .314 |
| 26 | 84 | 46 | 0 | 105 | 70 | 95 | 74 | 0 | 0 | 15 | .342 |
| 27 | 85 | 53 | 0 | 104 | 69 | 94 | 73 | 0 | 4 | 19 | .354 |
| 28 | 94 | 54 | 0 | 106 | 70 | 95 | 73 | 0 | 9 | 24 | .343 |
| 29 | 99 | 53 | 0 | 110 | 73 | 99 | 76 | 0 | 11 | 26 | .391 |
| 30 | 101 | 53 | 0 | 111 | 74 | 99 | 77 | 0 | 12 | 27 | .378 |
| 31 | 99 | 51 | 0 | 111 | 73 | 99 | 76 | 0 | 10 | 25 | .371 |
| Average/Total | 86.5 | 51.2 | 0.00 | 103.7 | 70.0 | 94.0 | 73.3 | 17 | 142 | 590 | 10.399 |
| Departure | 6.3 | 0.2 | -0.52 |   |   |   |   |   |   |   |   |