Daily Observations at Hyslop Exp. Stn., Corvallis
October 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 | 75 | 45 | T | 85 | 69 | 77 | 63 | 5 | 0 | 10 | .124 |
| 2 | 79 | 48 | 0 | 87 | 59 | 79 | 63 | 1 | 0 | 14 | .156 |
| 3 | 67 | 55 | 0 | 73 | 64 | 69 | 61 | 4 | 0 | 11 | .060 |
| 4 | 71 | 48 | 0 | 79 | 61 | 72 | 64 | 5 | 0 | 10 | .088 |
| 5 | 67 | 53 | 0 | 78 | 63 | 71 | 63 | 5 | 0 | 10 | .073 |
| 6 | 65 | 45 | 0 | 70 | 58 | 68 | 62 | 10 | 0 | 5 | .066 |
| 7 | 77 | 48 | .57 | 82 | 59 | 73 | 61 | 2 | 0 | 13 | .088 |
| 8 | 70 | 48 | T | 75 | 57 | 70 | 60 | 6 | 0 | 9 | .133 |
| 9 | 64 | 42 | .04 | 64 | 51 | 62 | 55 | 12 | 0 | 3 | .040 |
| 10 | 63 | 40 | .12 | 64 | 49 | 61 | 53 | 13 | 0 | 2 | .067 |
| 11 | 62 | 42 | .09 | 66 | 49 | 61 | 51 | 13 | 0 | 2 | .076 |
| 12 | 54 | 47 | .28 | 54 | 52 | 54 | 53 | 14 | 0 | 1 | .036 |
| 13 | 62 | 42 | .05 | 64 | 51 | 61 | 52 | 13 | 0 | 2 | .024 |
| 14 | 60 | 42 | .03 | 61 | 49 | 58 | 52 | 14 | 0 | 1 | .069 |
| 15 | 64 | 44 | .02 | 67 | 50 | 62 | 52 | 11 | 0 | 4 | .080 |
| 16 | 61 | 47 | .44 | 59 | 52 | 57 | 53 | 11 | 0 | 4 | .050 |
| 17 | 74 | 56 | 0 | 64 | 55 | 60 | 55 | 0 | 0 | 15 | .116 |
| 18 | 78 | 46 | T | 57 | 55 | 65 | 58 | 3 | 0 | 12 | .017 |
| 19 | 71 | 50 | .27 | 71 | 57 | 65 | 56 | 4 | 0 | 11 | .105 |
| 20 | 68 | 56 | T | 68 | 58 | 64 | 58 | 3 | 0 | 12 | .017 |
| 21 | 75 | 54 | 0 | 69 | 60 | 65 | 61 | 0 | 0 | 15 | .086 |
| 22 | 78 | 55 | 0 | 74 | 60 | 69 | 60 | 0 | 2 | 17 | .079 |
| 23 | 72 | 39 | .04 | 70 | 51 | 66 | 56 | 9 | 0 | 6 | .101 |
| 24 | 65 | 39 | 0 | 66 | 49 | 61 | 53 | 13 | 0 | 2 | .029 |
| 25 | 64 | 41 | 0 | 62 | 48 | 58 | 51 | 12 | 0 | 3 | .161 |
| 26 | 69 | 42 | 0 | 62 | 49 | 58 | 50 | 9 | 0 | 6 | .218 |
| 27 | 73 | 38 | 0 | 64 | 48 | 60 | 50 | 9 | 0 | 6 | .068 |
| 28 | 75 | 42 | 0 | 67 | 48 | 62 | 49 | 6 | 0 | 9 | .123 |
| 29 | 73 | 38 | .01 | 68 | 49 | 63 | 53 | 9 | 0 | 6 | .102 |
| 30 | 56 | 37 | .02 | 59 | 47 | 56 | 51 | 18 | 0 | 0 | .060 |
| 31 | 52 | 32 | 0 | 54 | 37 | 53 | 43 | 23 | 0 | 0 | .118 |
| Average/Total | 67.9 | 45.2 | 1.98 | 67.8 | 53.7 | 63.9 | 55.5 | 257 | 2 | 221 | 2.630 |
| Departure | 3.6 | 3.5 | -1.13 |   |   |   |   |   |   |   |   |