Daily Observations at Hyslop Exp. Stn., Corvallis
September 2008
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 | 66 | 37 | 0.4 | 0 | 78 | 53 | 72 | 58 | 13 | 0 | 2 | 0.21 |
| 2 | 69 | 44 | 0 | 0 | 75 | 51 | 71 | 56 | 8 | 0 | 7 | 0.18 |
| 3 | 77 | 42 | 0 | 0 | 85 | 55 | 77 | 59 | 5 | 0 | 10 | 0.30 |
| 4 | 76 | 49 | 0 | 0 | 86 | 54 | 79 | 56 | 2 | 0 | 13 | 0.12 |
| 5 | 80 | 50 | 0 | 0 | 87 | 58 | 80 | 60 | 0 | 0 | 15 | 0.27 |
| 6 | 82 | 52 | 0 | 0 | 91 | 60 | 83 | 63 | 0 | 2 | 17 | 0.18 |
| 7 | 81 | 56 | 0 | 0 | 90 | 63 | 82 | 65 | 0 | 4 | 19 | 0.27 |
| 8 | 88 | 46 | 0 | 0 | 91 | 65 | 83 | 65 | 0 | 2 | 17 | 0.51 |
| 9 | 88 | 46 | 0 | 0 | 92 | 63 | 84 | 67 | 0 | 2 | 17 | 0.41 |
| 10 | 81 | 41 | 0 | 0 | 92 | 59 | 85 | 64 | 4 | 0 | 11 | 0.25 |
| 11 | 81 | 49 | 0 | 0 | 87 | 58 | 80 | 63 | 0 | 0 | 15 | 0.35 |
| 12 | 89 | 45 | 0 | 0 | 91 | 61 | 83 | 64 | 0 | 2 | 17 | 0.30 |
| 13 | 86 | 48 | 0 | 0 | 93 | 61 | 84 | 64 | 0 | 2 | 17 | 0.30 |
| 14 | 81 | 47 | 0 | 0 | 89 | 61 | 82 | 65 | 1 | 0 | 14 | 0.30 |
| 15 | 88 | 44 | 0 | 0 | 90 | 61 | 83 | 64 | 0 | 1 | 16 | 0.33 |
| 16 | 90 | 47 | 0 | 0 | 90 | 61 | 82 | 65 | 0 | 4 | 19 | 0.14 |
| 17 | 88 | 47 | 0 | 0 | 91 | 62 | 83 | 66 | 0 | 3 | 18 | 0.17 |
| 18 | 80 | 48 | 0 | 0 | 88 | 63 | 81 | 68 | 1 | 0 | 14 | 0.20 |
| 19 | 67 | 47 | 0 | 0 | 78 | 63 | 73 | 66 | 8 | 0 | 7 | 0.16 |
| 20 | 70 | 46 | 0 | 0 | 81 | 62 | 75 | 64 | 7 | 0 | 8 | 0.16 |
| 21 | 70 | 49 | 0.02 | 0 | 81 | 63 | 73 | 64 | 5 | 0 | 10 | 0.12 |
| 22 | 66 | 48 | 0.16 | 0 | 74 | 60 | 69 | 62 | 8 | 0 | 7 | 0.04 |
| 23 | 66 | 45 | 0 | 0 | 74 | 53 | 69 | 58 | 9 | 0 | 6 | 0.18 |
| 24 | 69 | 40 | 0 | 0 | 78 | 52 | 71 | 56 | 10 | 0 | 5 | 0.16 |
| 25 | 72 | 45 | 0.25 | 0 | 71 | 52 | 66 | 57 | 6 | 0 | 9 | 0.08 |
| 26 | 66 | 41 | 0.01 | 0 | 69 | 51 | 64 | 56 | 11 | 0 | 4 | 0.10 |
| 27 | 69 | 40 | T | 0 | 71 | 50 | 66 | 52 | 10 | 0 | 5 | 0.09 |
| 28 | 74 | 42 | 0.01 | 0 | 77 | 50 | 70 | 55 | 7 | 0 | 8 | 0.19 |
| 29 | 81 | 44 | 0 | 0 | 81 | 53 | 74 | 54 | 2 | 0 | 13 | 0.22 |
| 30 | 86 | 46 | 0 | 0 | 81 | 54 | 72 | 59 | 0 | 1 | 16 | 0.14 |
| Average/Total | 77.6 | 45.7 | 0.85 | 0.00 | 83.4 | 57.7 | 76.5 | 61.2 | 117 | 23 | 356 | 6.430 |
| Departure | 2.2 | -2.1 | -0.66 |   |   |   |   |   |   |   |   |   |