| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.64 | 3.63 | 0.01 |
| Feb | 3.02 | 2.94 | 0.08 |
| Mar | 4.07 | 3.98 | 0.09 |
| Apr | 3.58 | 3.59 | -0.01 |
| May | 3.76 | 3.63 | 0.13 |
| Jun | 4.61 | 4.63 | -0.02 |
| Jul | 4.98 | 4.94 | 0.04 |
| Aug | 4.87 | 4.70 | 0.17 |
| Sep | 5.14 | 5.26 | -0.12 |
| Oct | 3.57 | 3.60 | -0.03 |
| Nov | 3.46 | 3.38 | 0.08 |
| Dec | 3.52 | 3.47 | 0.05 |
48.22 | 47.75 | 0.47 |