| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.99 | 4.13 | -0.14 |
| Feb | 3.53 | 3.58 | -0.05 |
| Mar | 4.78 | 5.00 | -0.22 |
| Apr | 4.38 | 4.65 | -0.27 |
| May | 3.46 | 3.48 | -0.02 |
| Jun | 4.01 | 4.13 | -0.12 |
| Jul | 3.28 | 3.38 | -0.10 |
| Aug | 3.76 | 3.78 | -0.02 |
| Sep | 4.02 | 4.05 | -0.03 |
| Oct | 4.63 | 4.78 | -0.15 |
| Nov | 4.11 | 4.23 | -0.12 |
| Dec | 4.74 | 4.98 | -0.24 |
48.69 | 50.17 | -1.48 |