| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.51 | 3.70 | -0.19 |
| Feb | 3.26 | 3.23 | 0.03 |
| Mar | 3.59 | 3.76 | -0.17 |
| Apr | 2.88 | 3.00 | -0.12 |
| May | 3.03 | 3.20 | -0.17 |
| Jun | 4.16 | 4.26 | -0.10 |
| Jul | 4.13 | 4.47 | -0.34 |
| Aug | 4.60 | 4.73 | -0.13 |
| Sep | 3.82 | 3.96 | -0.14 |
| Oct | 3.23 | 3.34 | -0.11 |
| Nov | 2.88 | 2.95 | -0.07 |
| Dec | 3.62 | 3.81 | -0.19 |
42.71 | 44.41 | -1.70 |