Daily Observations at Hyslop Exp. Stn., Corvallis
October 2001
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 | 86 | 43 | 0 | 83 | 56 | 75 | 58 | 0 | 0 | 15 | .219 |
| 2 | 85 | 44 | 0 | 86 | 54 | 77 | 58 | 0 | 0 | 15 | .188 |
| 3 | 79 | 45 | 0 | 84 | 57 | 76 | 60 | 3 | 0 | 12 | .253 |
| 4 | 75 | 42 | 0 | 82 | 55 | 75 | 60 | 6 | 0 | 9 | .169 |
| 5 | 84 | 38 | 0 | 84 | 54 | 76 | 59 | 4 | 0 | 11 | .228 |
| 6 | 73 | 43 | 0 | 82 | 54 | 74 | 59 | 7 | 0 | 8 | .134 |
| 7 | 68 | 43 | 0 | 78 | 56 | 71 | 60 | 9 | 0 | 6 | .106 |
| 8 | 63 | 45 | .01 | 68 | 55 | 64 | 57 | 11 | 0 | 4 | .044 |
| 9 | 63 | 33 | .08 | 69 | 48 | 64 | 53 | 17 | 0 | 0 | .081 |
| 10 | 63 | 37 | 0 | 73 | 47 | 67 | 52 | 15 | 0 | 0 | .106 |
| 11 | 55 | 42 | .31 | 57 | 51 | 57 | 54 | 16 | 0 | 0 | .015 |
| 12 | 63 | 38 | .01 | 68 | 48 | 63 | 53 | 14 | 0 | 1 | .095 |
| 13 | 66 | 45 | .01 | 66 | 49 | 60 | 51 | 9 | 0 | 6 | .087 |
| 14 | 66 | 46 | 0 | 74 | 56 | 67 | 57 | 9 | 0 | 6 | .117 |
| 15 | 70 | 44 | 0 | 70 | 52 | 65 | 56 | 8 | 0 | 7 | .097 |
| 16 | 72 | 40 | 0 | 72 | 51 | 65 | 53 | 9 | 0 | 6 | .116 |
| 17 | 62 | 35 | 0 | 63 | 45 | 59 | 49 | 16 | 0 | 0 | .056 |
| 18 | 59 | 37 | 0 | 66 | 45 | 60 | 47 | 17 | 0 | 0 | .114 |
| 19 | 63 | 36 | 0 | 68 | 45 | 62 | 48 | 15 | 0 | 0 | .119 |
| 20 | 68 | 36 | T | 71 | 46 | 64 | 50 | 13 | 0 | 2 | .138 |
| 21 | 59 | 35 | T | 68 | 48 | 62 | 52 | 18 | 0 | 0 | .076 |
| 22 | 53 | 38 | .15 | 54 | 48 | 54 | 51 | 19 | 0 | 0 | .006 |
| 23 | 58 | 46 | 1.05 | 57 | 50 | 56 | 53 | 13 | 0 | 2 | .047 |
| 24 | 56 | 37 | .05 | 59 | 47 | 56 | 50 | 18 | 0 | 0 | .066 |
| 25 | 59 | 40 | T | 59 | 46 | 56 | 48 | 15 | 0 | 0 | .053 |
| 26 | 66 | 40 | 0 | 64 | 49 | 59 | 51 | 12 | 0 | 3 | .061 |
| 27 | 66 | 41 | T | 62 | 48 | 58 | 49 | 11 | 0 | 4 | .063 |
| 28 | 51 | 37 | .28 | 52 | 46 | 53 | 49 | 21 | 0 | 0 | .010 |
| 29 | 46 | 40 | T | 53 | 45 | 51 | 48 | 22 | 0 | 0 | .013 |
| 30 | 48 | 42 | .70 | 51 | 48 | 50 | 48 | 20 | 0 | 0 | .009 |
| 31 | 57 | 43 | .44 | 53 | 49 | 52 | 49 | 15 | 0 | 0 | .116 |
| Average/Total | 64.6 | 40.4 | 3.09 | 67.6 | 49.9 | 62.8 | 53.0 | 382 | 0 | 117 | 3.002 |
| Departure | 0.3 | -1.3 | -0.02 |   |   |   |   |   |   |   |   |