Daily Observations at Hyslop Exp. Stn., Corvallis
February 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 | 59 | 41 | 1.17 | 58 | 48 | 53 | 49 | 15 | 0 | 0 | |
| 2 | 50 | 41 | .03 | 53 | 47 | 50 | 47 | 19 | 0 | 0 | |
| 3 | 51 | 34 | .05 | 53 | 43 | 50 | 45 | 22 | 0 | 0 | |
| 4 | 51 | 33 | 0 | 54 | 41 | 50 | 45 | 23 | 0 | 0 | |
| 5 | 46 | 28 | 0 | 50 | 38 | 48 | 40 | 28 | 0 | 0 | |
| 6 | 49 | 29 | 0 | 48 | 37 | 44 | 39 | 26 | 0 | 0 | |
| 7 | 55 | 30 | 0 | 50 | 36 | 46 | 39 | 22 | 0 | 0 | |
| 8 | 52 | 29 | 0 | 50 | 36 | 46 | 37 | 24 | 0 | 0 | |
| 9 | 52 | 28 | 0 | 49 | 36 | 45 | 37 | 25 | 0 | 0 | |
| 10 | 56 | 29 | T | 51 | 35 | 47 | 36 | 22 | 0 | 0 | |
| 11 | 51 | 29 | 0 | 51 | 37 | 48 | 39 | 25 | 0 | 0 | |
| 12 | 56 | 27 | 0 | 52 | 36 | 48 | 37 | 23 | 0 | 0 | |
| 13 | 56 | 29 | T | 50 | 36 | 47 | 38 | 22 | 0 | 0 | |
| 14 | 55 | 41 | 0 | 50 | 44 | 47 | 44 | 17 | 0 | 0 | |
| 15 | 60 | 41 | .19 | 58 | 46 | 53 | 47 | 14 | 0 | 1 | |
| 16 | 54 | 42 | .38 | 53 | 45 | 49 | 45 | 17 | 0 | 0 | |
| 17 | 50 | 43 | .70 | 51 | 44 | 48 | 46 | 18 | 0 | 0 | |
| 18 | 50 | 40 | .80 | 49 | 39 | 47 | 45 | 20 | 0 | 0 | |
| 19 | 54 | 40 | .08 | 56 | 44 | 52 | 44 | 18 | 0 | 0 | |
| 20 | 52 | 43 | .10 | 54 | 47 | 52 | 46 | 17 | 0 | 0 | |
| 21 | 49 | 43 | .05 | 48 | 46 | 48 | 46 | 19 | 0 | 0 | |
| 22 | 56 | 42 | .04 | 56 | 46 | 52 | 47 | 16 | 0 | 0 | |
| 23 | 53 | 35 | T | 54 | 40 | 50 | 43 | 21 | 0 | 0 | |
| 24 | 53 | 31 | 0 | 53 | 37 | 51 | 40 | 23 | 0 | 0 | |
| 25 | 47 | 31 | 0 | 48 | 36 | 46 | 38 | 26 | 0 | 0 | |
| 26 | 52 | 28 | 0 | 51 | 35 | 46 | 38 | 25 | 0 | 0 | |
| 27 | 50 | 30 | 0 | 51 | 36 | 47 | 37 | 25 | 0 | 0 | |
| 28 | 54 | 34 | T | 60 | 42 | 53 | 42 | 21 | 0 | 0 | |
| Average/Total | 52.6 | 34.7 | 3.59 | 52.2 | 40.5 | 48.7 | 42.0 | 593 | 0 | 1 | 0.000 |
| Departure | 2.2 | -0.4 | -1.45 |   |   |   |   |   |   |   |   |