Daily Observations at Hyslop Exp. Stn., Corvallis
September 2002
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 | 84 | 54 | 0 | 97 | 64 | 88 | 69 | 0 | 4 | 19 | .254 |
| 2 | 83 | 57 | 0 | 100 | 68 | 88 | 71 | 0 | 5 | 20 | .295 |
| 3 | 87 | 53 | 0 | 100 | 69 | 91 | 72 | 0 | 5 | 20 | .282 |
| 4 | 74 | 39 | 0 | 96 | 61 | 87 | 68 | 8 | 0 | 7 | .140 |
| 5 | 74 | 39 | 0 | 95 | 60 | 86 | 66 | 8 | 0 | 7 | .301 |
| 6 | 75 | 40 | 0 | 91 | 59 | 82 | 66 | 7 | 0 | 8 | .168 |
| 7 | 74 | 42 | 0 | 92 | 58 | 78 | 63 | 7 | 0 | 8 | .199 |
| 8 | 71 | 38 | .01 | 86 | 58 | 78 | 63 | 10 | 0 | 5 | .171 |
| 9 | 75 | 41 | 0 | 86 | 58 | 77 | 61 | 7 | 0 | 8 | .132 |
| 10 | 82 | 45 | 0 | 93 | 58 | 83 | 62 | 1 | 0 | 14 | .212 |
| 11 | 86 | 53 | 0 | 95 | 60 | 85 | 65 | 0 | 5 | 20 | .250 |
| 12 | 88 | 48 | 0 | 96 | 64 | 86 | 68 | 0 | 3 | 18 | .231 |
| 13 | 88 | 55 | 0 | 96 | 64 | 86 | 67 | 0 | 7 | 22 | .236 |
| 14 | 90 | 48 | 0 | 96 | 64 | 87 | 70 | 0 | 4 | 19 | .186 |
| 15 | 84 | 47 | 0 | 86 | 66 | 80 | 69 | 0 | 1 | 16 | .244 |
| 16 | 75 | 52 | 0 | 78 | 53 | 73 | 66 | 1 | 0 | 14 | .053 |
| 17 | 68 | 54 | .46 | 75 | 63 | 71 | 65 | 4 | 0 | 11 | .040 |
| 18 | 64 | 41 | .23 | 71 | 58 | 68 | 60 | 12 | 0 | 3 | .048 |
| 19 | 73 | 47 | 0 | 77 | 56 | 71 | 58 | 5 | 0 | 10 | .206 |
| 20 | 79 | 48 | 0 | 83 | 56 | 75 | 58 | 1 | 0 | 14 | .197 |
| 21 | 76 | 48 | 0 | 82 | 56 | 75 | 60 | 3 | 0 | 12 | .296 |
| 22 | 81 | 48 | 0 | 84 | 55 | 75 | 58 | 0 | 0 | 15 | .382 |
| 23 | 85 | 43 | 0 | 87 | 56 | 79 | 60 | 1 | 0 | 14 | .269 |
| 24 | 89 | 46 | 0 | 89 | 56 | 81 | 61 | 0 | 3 | 18 | .329 |
| 25 | 83 | 48 | 0 | 89 | 59 | 80 | 62 | 0 | 1 | 16 | .236 |
| 26 | 85 | 45 | 0 | 89 | 60 | 81 | 63 | 0 | 0 | 15 | .303 |
| 27 | 82 | 47 | 0 | 86 | 59 | 78 | 63 | 0 | 0 | 15 | .124 |
| 28 | 75 | 52 | 0 | 86 | 62 | 78 | 64 | 1 | 0 | 14 | .243 |
| 29 | 80 | 50 | .16 | 90 | 61 | 80 | 63 | 0 | 0 | 15 | .198 |
| 30 | 64 | 46 | .27 | 72 | 54 | 68 | 59 | 10 | 0 | 5 | .115 |
| Average/Total | 79.1 | 47.1 | 1.13 | 88.1 | 59.8 | 79.8 | 64.0 | 86 | 38 | 402 | 6.340 |
| Departure | 3.7 | -0.7 | -0.38 |   |   |   |   |   |   |   |   |