Daily Observations at Hyslop Exp. Stn., Corvallis
December 2007
Bold = new daily record set (old record, year)
| Day | Max Temp (F) | Min Temp (F) | Precip (in) | Snow (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 | 38 | 32 | .05 | 0 | 41 | 39 | 41 | 40 | 30 | 0 | 0 | 0 |
| 2 | 44 | 33 | .78 | 0 | 43 | 38 | 41 | 38 | 26 | 0 | 0 | 0 |
| 3 | 55 | 42 | 1.20 | 0 | 49 | 41 | 47 | 41 | 16 | 0 | 0 | 0 |
| 4 | 57 | 53 | 1.20 | 0 | 52 | 49 | 50 | 47 | 10 | 0 | 5 | 0 |
| 5 | 62 | 43 | .12 | 0 | 58 | 49 | 54 | 50 | 12 | 0 | 3 | 0 |
| 6 | 52 | 44 | .21 | 0 | 54 | 49 | 52 | 50 | 17 | 0 | 0 | 0 |
| 7 | 54 | 42 | .06 | 0 | 54 | 47 | 52 | 49 | 17 | 0 | 0 | 0 |
| 8 | 49 | 34 | T | 0 | 50 | 42 | 49 | 45 | 23 | 0 | 0 | 0 |
| 9 | 45 | 25 | 0 | 0 | 48 | 36 | 46 | 40 | 30 | 0 | 0 | 0 |
| 10 | 38 | 29 | .02 | 0 | 39 | 36 | 39 | 36 | 31 | 0 | 0 | 0 |
| 11 | 41 | 27 | 0 | 0 | 41 | 36 | 41 | 37 | 31 | 0 | 0 | 0 |
| 12 | 37 | 28 | .01 | 0 | 37 | 36 | 38 | 38 | 32 | 0 | 0 | 0 |
| 13 | 48 | 30 | T | 0 | 46 | 36 | 41 | 37 | 26 | 0 | 0 | 0 |
| 14 | 36 | 32 | .01 | 0 | 41 | 38 | 40 | 39 | 31 | 0 | 0 | 0 |
| 15 | 46 | 34 | .10 | 0 | 44 | 38 | 41 | 38 | 25 | 0 | 0 | 0 |
| 16 | 50 | 34 | .02 | 0 | 47 | 38 | 43 | 39 | 23 | 0 | 0 | 0 |
| 17 | 44 | 34 | .55 | 0 | 41 | 38 | 41 | 38 | 26 | 0 | 0 | 0 |
| 18 | 47 | 39 | .29 | 0 | 44 | 41 | 43 | 41 | 22 | 0 | 0 | 0 |
| 19 | 50 | 40 | .38 | 0 | 47 | 43 | 44 | 43 | 20 | 0 | 0 | 0 |
| 20 | 47 | 39 | 1.01 | 0 | 45 | 42 | 44 | 43 | 22 | 0 | 0 | 0 |
| 21 | 46 | 32 | .02 | 0 | 47 | 37 | 44 | 40 | 26 | 0 | 0 | 0 |
| 22 | 44 | 29 | .03 | 0 | 44 | 38 | 42 | 39 | 28 | 0 | 0 | 0 |
| 23 | 45 | 37 | .50 | 0 | 43 | 38 | 42 | 36 | 24 | 0 | 0 | 0 |
| 24 | 54 | 38 | 1.00 | 0 | 49 | 41 | 46 | 42 | 19 | 0 | 0 | 0 |
| 25 | 48 | 28 | T | 0 | 48 | 37 | 45 | 39 | 27 | 0 | 0 | 0 |
| 26 | 39 | 31 | .37 | 0 | 38 | 35 | 38 | 36 | 30 | 0 | 0 | 0 |
| 27 | 43 | 32 | .18 | 0 | 42 | 35 | 40 | 38 | 27 | 0 | 0 | 0 |
| 28 | 41 | 34 | .61 | 0 | 37 | 36 | 38 | 36 | 27 | 0 | 0 | 0 |
| 29 | 45 | 37 | .18 | 0 | 42 | 37 | 40 | 35 | 24 | 0 | 0 | 0 |
| 30 | 49 | 36 | .35 | 0 | 46 | 39 | 43 | 39 | 22 | 0 | 0 | 0 |
| 31 | 42 | 25 | .19 | 0 | 41 | 36 | 39 | 37 | 31 | 0 | 0 | 0 |
| Average/Total | 46.3 | 34.6 | 9.44 | 0.00 | 45.1 | 39.4 | 43.4 | 40.2 | 755 | 0 | 8 | 0.000 |
| Departure | 0.7 | 0.7 | 1.72 |   |   |   |   |   |   |   |   |   |