| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.43 | 4.34 | 0.09 |
| Feb | 4.44 | 4.38 | 0.06 |
| Mar | 4.80 | 4.67 | 0.13 |
| Apr | 3.58 | 3.62 | -0.04 |
| May | 3.31 | 3.16 | 0.15 |
| Jun | 4.26 | 4.49 | -0.23 |
| Jul | 4.18 | 4.22 | -0.04 |
| Aug | 4.63 | 4.45 | 0.18 |
| Sep | 3.88 | 3.92 | -0.04 |
| Oct | 3.15 | 3.08 | 0.07 |
| Nov | 3.54 | 3.56 | -0.02 |
| Dec | 4.51 | 4.52 | -0.01 |
48.71 | 48.41 | 0.30 |