| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.75 | 3.54 | 0.21 |
| Feb | 3.34 | 3.18 | 0.16 |
| Mar | 4.17 | 3.99 | 0.18 |
| Apr | 4.22 | 3.91 | 0.31 |
| May | 3.68 | 3.61 | 0.07 |
| Jun | 4.44 | 4.23 | 0.21 |
| Jul | 4.04 | 4.01 | 0.03 |
| Aug | 4.30 | 4.32 | -0.02 |
| Sep | 4.30 | 4.17 | 0.13 |
| Oct | 4.91 | 4.76 | 0.15 |
| Nov | 3.92 | 3.67 | 0.25 |
| Dec | 4.42 | 4.30 | 0.12 |
49.49 | 47.69 | 1.80 |