| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.53 | 3.34 | 0.19 |
| Feb | 3.00 | 2.89 | 0.11 |
| Mar | 3.87 | 3.85 | 0.02 |
| Apr | 3.55 | 3.57 | -0.02 |
| May | 3.66 | 3.45 | 0.21 |
| Jun | 4.46 | 4.50 | -0.04 |
| Jul | 5.02 | 4.84 | 0.18 |
| Aug | 4.76 | 4.90 | -0.14 |
| Sep | 4.81 | 5.10 | -0.29 |
| Oct | 3.42 | 3.56 | -0.14 |
| Nov | 3.38 | 3.29 | 0.09 |
| Dec | 3.44 | 3.41 | 0.03 |
46.90 | 46.70 | 0.20 |