| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.46 | 0.51 | -0.05 |
| Feb | 0.67 | 0.61 | 0.06 |
| Mar | 0.98 | 0.99 | -0.01 |
| Apr | 2.48 | 2.63 | -0.15 |
| May | 3.41 | 3.41 | 0.00 |
| Jun | 3.79 | 4.11 | -0.32 |
| Jul | 2.71 | 2.53 | 0.18 |
| Aug | 2.68 | 2.69 | -0.01 |
| Sep | 2.19 | 2.23 | -0.04 |
| Oct | 1.76 | 1.85 | -0.09 |
| Nov | 0.69 | 0.75 | -0.06 |
| Dec | 0.51 | 0.56 | -0.05 |
22.33 | 22.87 | -0.54 |