Daily Observations at Hyslop Exp. Stn., Corvallis
March 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 | 46 | 39 | .38 | 48 | 41 | 46 | 44 | 22 | 0 | 0 | |
| 2 | 57 | 33 | .01 | 63 | 43 | 56 | 44 | 20 | 0 | 0 | |
| 3 | 48 | 35 | .30 | 51 | 43 | 48 | 43 | 23 | 0 | 0 | |
| 4 | 52 | 35 | .02 | 56 | 43 | 52 | 43 | 21 | 0 | 0 | |
| 5 | 50 | 40 | .08 | 52 | 43 | 49 | 45 | 20 | 0 | 0 | |
| 6 | 53 | 44 | .27 | 52 | 46 | 49 | 46 | 16 | 0 | 0 | |
| 7 | 48 | 45 | .77 | 50 | 47 | 48 | 46 | 18 | 0 | 0 | |
| 8 | 53 | 46 | .95 | 53 | 47 | 49 | 46 | 15 | 0 | 0 | |
| 9 | 56 | 47 | .23 | 56 | 48 | 53 | 46 | 13 | 0 | 2 | |
| 10 | 59 | 45 | .05 | 58 | 49 | 53 | 48 | 13 | 0 | 2 | |
| 11 | 61 | 47 | .01 | 63 | 49 | 58 | 48 | 11 | 0 | 4 | |
| 12 | 59 | 49 | .06 | 57 | 50 | 55 | 49 | 11 | 0 | 4 | |
| 13 | 62 | 49 | .06 | 56 | 51 | 55 | 51 | 9 | 0 | 6 | |
| 14 | 61 | 47 | .26 | 56 | 50 | 53 | 51 | 11 | 0 | 4 | |
| 15 | 62 | 42 | .28 | 62 | 49 | 55 | 48 | 13 | 0 | 2 | |
| 16 | 59 | 43 | .19 | 63 | 48 | 58 | 49 | 14 | 0 | 1 | |
| 17 | 58 | 34 | .02 | 63 | 44 | 57 | 46 | 19 | 0 | 0 | |
| 18 | 54 | 35 | .04 | 61 | 43 | 55 | 45 | 20 | 0 | 0 | |
| 19 | 60 | 39 | 0 | 60 | 44 | 54 | 44 | 15 | 0 | 0 | |
| 20 | 50 | 44 | .57 | 60 | 44 | 49 | 45 | 18 | 0 | 0 | |
| 21 | 56 | 45 | .67 | 59 | 48 | 54 | 47 | 14 | 0 | 1 | |
| 22 | 53 | 46 | 1.08 | 54 | 48 | 51 | 47 | 15 | 0 | 0 | |
| 23 | 54 | 39 | .25 | 60 | 47 | 55 | 48 | 18 | 0 | 0 | |
| 24 | 52 | 32 | .07 | 58 | 41 | 54 | 44 | 23 | 0 | 0 | |
| 25 | 54 | 34 | .35 | 61 | 39 | 54 | 42 | 21 | 0 | 0 | |
| 26 | 57 | 42 | .33 | 57 | 48 | 53 | 49 | 15 | 0 | 0 | |
| 27 | 54 | 39 | .07 | 62 | 46 | 57 | 47 | 18 | 0 | 0 | |
| 28 | 54 | 39 | .04 | 61 | 44 | 56 | 47 | 18 | 0 | 0 | |
| 29 | 60 | 42 | .01 | 67 | 48 | 59 | 47 | 14 | 0 | 1 | |
| 30 | 72 | 42 | 0 | 72 | 48 | 64 | 48 | 8 | 0 | 7 | |
| 31 | 76 | 50 | .10 | 73 | 53 | 66 | 46 | 2 | 0 | 13 | |
| Average/Total | 56.5 | 41.5 | 7.52 | 58.8 | 46.2 | 54.0 | 46.4 | 488 | 0 | 47 | 0.000 |
| Departure | 1.6 | 4.5 | 2.97 |   |   |   |   |   |   |   |   |