| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.78 | 0.83 | -0.05 |
| Feb | 0.86 | 0.85 | 0.01 |
| Mar | 1.52 | 1.41 | 0.11 |
| Apr | 2.76 | 2.82 | -0.06 |
| May | 4.07 | 4.07 | 0.00 |
| Jun | 4.35 | 4.36 | -0.01 |
| Jul | 4.32 | 4.35 | -0.03 |
| Aug | 4.06 | 3.91 | 0.15 |
| Sep | 3.29 | 3.35 | -0.06 |
| Oct | 2.93 | 2.92 | 0.01 |
| Nov | 1.67 | 1.60 | 0.07 |
| Dec | 1.14 | 1.23 | -0.09 |
31.75 | 31.70 | 0.05 |