| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.64 | 3.41 | 0.23 |
| Feb | 3.12 | 2.89 | 0.23 |
| Mar | 4.17 | 3.91 | 0.26 |
| Apr | 4.04 | 3.85 | 0.19 |
| May | 4.59 | 4.61 | -0.02 |
| Jun | 4.42 | 4.27 | 0.15 |
| Jul | 4.31 | 4.26 | 0.05 |
| Aug | 3.71 | 3.77 | -0.06 |
| Sep | 3.77 | 3.73 | 0.04 |
| Oct | 3.00 | 2.80 | 0.20 |
| Nov | 3.16 | 2.89 | 0.27 |
| Dec | 3.88 | 3.52 | 0.36 |
45.81 | 43.91 | 1.90 |