| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.63 | 0.59 | 0.04 |
| Feb | 0.80 | 0.79 | 0.01 |
| Mar | 1.55 | 1.50 | 0.05 |
| Apr | 2.97 | 2.91 | 0.06 |
| May | 4.10 | 3.93 | 0.17 |
| Jun | 4.55 | 4.60 | -0.05 |
| Jul | 3.28 | 3.24 | 0.04 |
| Aug | 3.24 | 3.30 | -0.06 |
| Sep | 3.16 | 2.89 | 0.27 |
| Oct | 2.38 | 2.44 | -0.06 |
| Nov | 1.29 | 1.33 | -0.04 |
| Dec | 0.88 | 0.86 | 0.02 |
28.83 | 28.38 | 0.45 |