| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.41 | 0.42 | -0.01 |
| Feb | 0.60 | 0.50 | 0.10 |
| Mar | 0.88 | 0.80 | 0.08 |
| Apr | 1.89 | 1.81 | 0.08 |
| May | 3.04 | 3.16 | -0.12 |
| Jun | 3.33 | 3.54 | -0.21 |
| Jul | 2.48 | 2.40 | 0.08 |
| Aug | 2.01 | 1.92 | 0.09 |
| Sep | 1.56 | 1.67 | -0.11 |
| Oct | 1.58 | 1.53 | 0.05 |
| Nov | 0.54 | 0.46 | 0.08 |
| Dec | 0.47 | 0.43 | 0.04 |
18.79 | 18.64 | 0.15 |