| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.77 | 0.74 | 0.03 |
| Feb | 0.79 | 0.80 | -0.01 |
| Mar | 1.55 | 1.46 | 0.09 |
| Apr | 2.80 | 2.80 | 0.00 |
| May | 4.13 | 3.99 | 0.14 |
| Jun | 4.20 | 4.34 | -0.14 |
| Jul | 4.37 | 4.26 | 0.11 |
| Aug | 4.00 | 4.04 | -0.04 |
| Sep | 3.30 | 3.25 | 0.05 |
| Oct | 2.86 | 2.89 | -0.03 |
| Nov | 1.58 | 1.59 | -0.01 |
| Dec | 1.10 | 1.11 | -0.01 |
31.45 | 31.27 | 0.18 |