| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.23 | 3.20 | 0.03 |
| Feb | 3.00 | 2.96 | 0.04 |
| Mar | 3.75 | 3.82 | -0.07 |
| Apr | 3.48 | 3.75 | -0.27 |
| May | 4.56 | 4.41 | 0.15 |
| Jun | 3.66 | 3.71 | -0.05 |
| Jul | 1.92 | 2.04 | -0.12 |
| Aug | 2.43 | 2.34 | 0.09 |
| Sep | 3.45 | 3.01 | 0.44 |
| Oct | 4.38 | 4.31 | 0.07 |
| Nov | 3.12 | 3.11 | 0.01 |
| Dec | 3.62 | 3.58 | 0.04 |
40.60 | 40.24 | 0.36 |