| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.40 | 3.29 | 0.11 |
| Feb | 2.84 | 2.73 | 0.11 |
| Mar | 3.69 | 3.67 | 0.02 |
| Apr | 3.91 | 3.80 | 0.11 |
| May | 4.37 | 4.21 | 0.16 |
| Jun | 4.38 | 4.19 | 0.19 |
| Jul | 4.26 | 4.08 | 0.18 |
| Aug | 3.81 | 3.38 | 0.43 |
| Sep | 3.79 | 3.75 | 0.04 |
| Oct | 3.06 | 2.93 | 0.13 |
| Nov | 3.00 | 2.90 | 0.10 |
| Dec | 3.20 | 3.19 | 0.01 |
43.71 | 42.12 | 1.59 |