| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.20 | 4.43 | -0.23 |
| Feb | 3.92 | 4.01 | -0.09 |
| Mar | 4.64 | 4.64 | 0.00 |
| Apr | 3.74 | 3.92 | -0.18 |
| May | 4.07 | 3.89 | 0.18 |
| Jun | 4.28 | 4.14 | 0.14 |
| Jul | 4.19 | 4.16 | 0.03 |
| Aug | 4.69 | 4.62 | 0.07 |
| Sep | 3.77 | 3.78 | -0.01 |
| Oct | 3.37 | 3.44 | -0.07 |
| Nov | 3.65 | 3.88 | -0.23 |
| Dec | 4.47 | 4.92 | -0.45 |
48.99 | 49.83 | -0.84 |