| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.69 | 0.77 | -0.08 |
| Feb | 0.81 | 0.87 | -0.06 |
| Mar | 1.42 | 1.56 | -0.14 |
| Apr | 2.73 | 2.86 | -0.13 |
| May | 4.06 | 4.17 | -0.11 |
| Jun | 4.42 | 4.38 | 0.04 |
| Jul | 4.10 | 4.33 | -0.23 |
| Aug | 3.95 | 4.01 | -0.06 |
| Sep | 3.22 | 3.31 | -0.09 |
| Oct | 2.76 | 2.77 | -0.01 |
| Nov | 1.50 | 1.60 | -0.10 |
| Dec | 1.00 | 1.13 | -0.13 |
30.66 | 31.76 | -1.10 |