Daily Observations at Hyslop Exp. Stn., Corvallis
September 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 | 87 | 47 | 0 | 101 | 67 | 90 | 71 | 0 | 2 | 17 | .293 |
| 2 | 86 | 50 | 0 | 100 | 66 | 88 | 70 | 0 | 3 | 18 | .324 |
| 3 | 93 | 52 | 0 | 101 | 67 | 89 | 71 | 0 | 8 | 23 | .264 |
| 4 | 95 | 51 | 0 | 100 | 68 | 89 | 72 | 0 | 8 | 23 | .148 |
| 5 | 96 | 50 | 0 | 104 | 68 | 92 | 71 | 0 | 8 | 23 | .338 |
| 6 | 93 | 53 | 0 | 105 | 68 | 93 | 73 | 0 | 8 | 23 | .383 |
| 7 | 73 | 56 | .09 | 87 | 67 | 81 | 71 | 0 | 0 | 15 | .171 |
| 8 | 72 | 48 | .12 | 84 | 60 | 78 | 65 | 5 | 0 | 10 | .107 |
| 9 | 69 | 51 | .39 | 77 | 61 | 72 | 63 | 5 | 0 | 10 | .103 |
| 10 | 71 | 54 | .05 | 73 | 60 | 69 | 62 | 2 | 0 | 13 | .068 |
| 11 | 70 | 58 | .02 | 72 | 63 | 69 | 63 | 1 | 0 | 14 | .048 |
| 12 | 73 | 47 | 0 | 75 | 56 | 72 | 61 | 5 | 0 | 10 | .110 |
| 13 | 72 | 49 | 0 | 82 | 56 | 76 | 59 | 4 | 0 | 11 | .201 |
| 14 | 81 | 46 | 0 | 86 | 55 | 79 | 57 | 1 | 0 | 14 | .343 |
| 15 | 80 | 40 | 0 | 88 | 46 | 81 | 60 | 5 | 0 | 10 | .153 |
| 16 | 71 | 45 | .20 | 87 | 55 | 80 | 61 | 7 | 0 | 8 | .233 |
| 17 | 64 | 42 | .13 | 72 | 53 | 68 | 58 | 12 | 0 | 3 | .107 |
| 18 | 70 | 40 | 0 | 76 | 52 | 72 | 55 | 10 | 0 | 5 | .155 |
| 19 | 77 | 45 | T | 79 | 52 | 75 | 56 | 4 | 0 | 11 | .134 |
| 20 | 75 | 47 | 0 | 84 | 57 | 76 | 61 | 4 | 0 | 11 | .162 |
| 21 | 71 | 48 | 0 | 86 | 56 | 78 | 58 | 5 | 0 | 10 | .214 |
| 22 | 79 | 50 | 0 | 85 | 55 | 78 | 59 | 0 | 0 | 15 | .312 |
| 23 | 88 | 50 | 0 | 88 | 58 | 80 | 64 | 0 | 4 | 19 | .280 |
| 24 | 85 | 47 | 0 | 87 | 58 | 82 | 64 | 0 | 1 | 16 | .245 |
| 25 | 87 | 46 | 0 | 92 | 60 | 84 | 64 | 0 | 2 | 17 | .202 |
| 26 | 86 | 48 | 0 | 90 | 60 | 84 | 65 | 0 | 2 | 17 | .343 |
| 27 | 88 | 54 | 0 | 92 | 66 | 84 | 68 | 0 | 6 | 21 | .348 |
| 28 | 98 | 48 | 0 | 96 | 63 | 86 | 68 | 0 | 8 | 23 | .368 |
| 29 | 84 | 50 | 0 | 91 | 63 | 83 | 66 | 0 | 2 | 17 | .177 |
| 30 | 67 | 46 | .01 | 75 | 61 | 73 | 64 | 8 | 0 | 7 | .081 |
| Average/Total | 80.0 | 48.6 | 1.01 | 87.2 | 59.9 | 80.0 | 64.0 | 78 | 62 | 434 | 6.415 |
| Departure | 4.6 | 0.8 | -0.50 |   |   |   |   |   |   |   |   |