| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.41 | 3.57 | -0.16 |
| Feb | 2.74 | 2.87 | -0.13 |
| Mar | 4.17 | 4.30 | -0.13 |
| Apr | 3.86 | 3.76 | 0.10 |
| May | 3.67 | 3.85 | -0.18 |
| Jun | 4.58 | 4.58 | 0.00 |
| Jul | 4.78 | 4.60 | 0.18 |
| Aug | 4.46 | 4.47 | -0.01 |
| Sep | 4.83 | 4.89 | -0.06 |
| Oct | 4.41 | 4.47 | -0.06 |
| Nov | 3.38 | 3.36 | 0.02 |
| Dec | 4.01 | 4.27 | -0.26 |
48.30 | 48.99 | -0.69 |