Daily Observations at Hyslop Exp. Stn., Corvallis
April 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 | 56 | 30 | .06 | 0 | 60 | 40 | 56 | 45 | 22 | 0 | 0 | .076 |
| 2 | 54 | 33 | .01 | 0 | 64 | 39 | 58 | 41 | 21 | 0 | 0 | .104 |
| 3 | 52 | 34 | 0 | 0 | 59 | 41 | 55 | 45 | 22 | 0 | 0 | .106 |
| 4 | 53 | 37 | 0 | 0 | 57 | 41 | 52 | 42 | 20 | 0 | 0 | .033 |
| 5 | 66 | 37 | 0 | 0 | 68 | 46 | 61 | 46 | 13 | 0 | 2 | .017 |
| 6 | 73 | 42 | 0 | 0 | 71 | 46 | 64 | 47 | 7 | 0 | 8 | .283 |
| 7 | 77 | 50 | .05 | 0 | 77 | 48 | 68 | 50 | 1 | 0 | 14 | .155 |
| 8 | 65 | 35 | .16 | 0 | 68 | 47 | 62 | 51 | 15 | 0 | 0 | .130 |
| 9 | 59 | 42 | .46 | 0 | 59 | 46 | 56 | 48 | 14 | 0 | 1 | .035 |
| 10 | 57 | 37 | .08 | 0 | 64 | 46 | 59 | 44 | 18 | 0 | 0 | .123 |
| 11 | 60 | 41 | .01 | 0 | 69 | 46 | 62 | 48 | 14 | 0 | 1 | .187 |
| 12 | 58 | 40 | .11 | 0 | 61 | 47 | 57 | 49 | 16 | 0 | 0 | .046 |
| 13 | 55 | 35 | .06 | 0 | 62 | 45 | 57 | 48 | 20 | 0 | 0 | .060 |
| 14 | 67 | 43 | .32 | 0 | 69 | 46 | 62 | 46 | 10 | 0 | 5 | .144 |
| 15 | 58 | 33 | trace | 0 | 65 | 44 | 61 | 48 | 19 | 0 | 0 | .152 |
| 16 | 57 | 35 | trace | 0 | 69 | 44 | 62 | 46 | 19 | 0 | 0 | .026 |
| 17 | 56 | 34 | .15 | 0 | 57 | 44 | 53 | 48 | 20 | 0 | 0 | .132 |
| 18 | 53 | 38 | .10 | 0 | 62 | 45 | 56 | 46 | 19 | 0 | 0 | .081 |
| 19 | 53 | 30 | .05 | 0 | 63 | 42 | 57 | 46 | 23 | 0 | 0 | .013 |
| 20 | 57 | 31 | T | 0 | 71 | 42 | 63 | 46 | 21 | 0 | 0 | .139 |
| 21 | 68 | 38 | .06 | 0 | 73 | 42 | 65 | 45 | 12 | 0 | 3 | .166 |
| 22 | 53 | 41 | .26 | 0 | 54 | 48 | 54 | 50 | 18 | 0 | 0 | .020 |
| 23 | 60 | 35 | .06 | 0 | 67 | 46 | 61 | 48 | 17 | 0 | 0 | .06 |
| 24 | 68 | 41 | trace | 0 | 75 | 47 | 68 | 48 | 10 | 0 | 5 | .144 |
| 25 | 62 | 41 | trace | 0 | 66 | 51 | 61 | 53 | 13 | 0 | 2 | .096 |
| 26 | 60 | 37 | 0 | 0 | 67 | 47 | 62 | 51 | 16 | 0 | 0 | .054 |
| 27 | 67 | 40 | 0 | 0 | 74 | 47 | 67 | 49 | 11 | 0 | 4 | .061 |
| 28 | 73 | 48 | 0 | 0 | 80 | 51 | 72 | 52 | 4 | 0 | 11 | .298 |
| 29 | 68 | 42 | 0 | 0 | 76 | 53 | 70 | 57 | 10 | 0 | 5 | .165 |
| 30 | 65 | 37 | 0 | 0 | 75 | 49 | 69 | 54 | 14 | 0 | 1 | .192 |
| Average/Total | 61.0 | 37.9 | 2.00 | 0.00 | 66.7 | 45.5 | 61.0 | 47.9 | 459 | 0 | 62 | 3.298 |
| Departure | 1.5 | -1.3 | -0.56 |   |   |   |   |   |   |   |   |   |