| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.88 | 0.92 | -0.04 |
| Feb | 0.90 | 0.94 | -0.04 |
| Mar | 1.80 | 1.72 | 0.08 |
| Apr | 3.01 | 2.93 | 0.08 |
| May | 4.25 | 4.30 | -0.05 |
| Jun | 4.94 | 5.16 | -0.22 |
| Jul | 4.19 | 4.05 | 0.14 |
| Aug | 4.56 | 4.54 | 0.02 |
| Sep | 3.50 | 3.55 | -0.05 |
| Oct | 2.60 | 2.53 | 0.07 |
| Nov | 1.63 | 1.57 | 0.06 |
| Dec | 1.17 | 1.26 | -0.09 |
33.43 | 33.47 | -0.04 |