| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.40 | 0.41 | -0.01 |
| Feb | 0.59 | 0.56 | 0.03 |
| Mar | 1.13 | 1.05 | 0.08 |
| Apr | 2.29 | 2.24 | 0.05 |
| May | 4.14 | 4.00 | 0.14 |
| Jun | 3.26 | 3.21 | 0.05 |
| Jul | 2.58 | 2.54 | 0.04 |
| Aug | 1.84 | 2.00 | -0.16 |
| Sep | 1.48 | 1.44 | 0.04 |
| Oct | 1.64 | 1.68 | -0.04 |
| Nov | 0.62 | 0.59 | 0.03 |
| Dec | 0.44 | 0.45 | -0.01 |
20.41 | 20.17 | 0.24 |