| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.70 | 3.45 | 0.25 |
| Feb | 3.10 | 2.97 | 0.13 |
| Mar | 3.90 | 3.62 | 0.28 |
| Apr | 3.87 | 3.72 | 0.15 |
| May | 3.83 | 3.64 | 0.19 |
| Jun | 4.05 | 3.77 | 0.28 |
| Jul | 4.60 | 4.02 | 0.58 |
| Aug | 4.08 | 3.83 | 0.25 |
| Sep | 3.89 | 3.83 | 0.06 |
| Oct | 3.06 | 2.80 | 0.26 |
| Nov | 3.30 | 3.06 | 0.24 |
| Dec | 3.68 | 3.48 | 0.20 |
45.06 | 42.19 | 2.87 |