| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.68 | 0.74 | -0.06 |
| Feb | 0.79 | 0.80 | -0.01 |
| Mar | 1.58 | 1.63 | -0.05 |
| Apr | 2.86 | 2.86 | 0.00 |
| May | 3.99 | 4.18 | -0.19 |
| Jun | 4.83 | 5.18 | -0.35 |
| Jul | 3.78 | 3.75 | 0.03 |
| Aug | 3.82 | 3.86 | -0.04 |
| Sep | 3.14 | 3.20 | -0.06 |
| Oct | 2.30 | 2.39 | -0.09 |
| Nov | 1.41 | 1.35 | 0.06 |
| Dec | 0.92 | 1.01 | -0.09 |
30.10 | 30.95 | -0.85 |