| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.34 | 3.47 | -0.13 |
| Feb | 2.64 | 2.80 | -0.16 |
| Mar | 3.58 | 3.66 | -0.08 |
| Apr | 4.91 | 5.05 | -0.14 |
| May | 5.06 | 5.12 | -0.06 |
| Jun | 4.92 | 5.18 | -0.26 |
| Jul | 4.51 | 4.73 | -0.22 |
| Aug | 3.41 | 3.26 | 0.15 |
| Sep | 3.48 | 3.65 | -0.17 |
| Oct | 3.65 | 3.69 | -0.04 |
| Nov | 3.86 | 3.95 | -0.09 |
| Dec | 3.23 | 3.44 | -0.21 |
46.59 | 48.00 | -1.41 |