| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.53 | 4.47 | 0.06 |
| Feb | 4.48 | 4.51 | -0.03 |
| Mar | 4.67 | 4.63 | 0.04 |
| Apr | 3.80 | 3.93 | -0.13 |
| May | 3.62 | 3.56 | 0.06 |
| Jun | 4.63 | 4.77 | -0.14 |
| Jul | 4.01 | 4.14 | -0.13 |
| Aug | 4.64 | 4.50 | 0.14 |
| Sep | 3.81 | 4.01 | -0.20 |
| Oct | 3.32 | 3.36 | -0.04 |
| Nov | 3.83 | 3.91 | -0.08 |
| Dec | 4.55 | 4.73 | -0.18 |
49.89 | 50.52 | -0.63 |