| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.76 | 0.76 | 0.00 |
| Feb | 0.79 | 0.80 | -0.01 |
| Mar | 1.53 | 1.47 | 0.06 |
| Apr | 2.76 | 2.85 | -0.09 |
| May | 4.06 | 3.90 | 0.16 |
| Jun | 4.30 | 4.33 | -0.03 |
| Jul | 4.40 | 4.36 | 0.04 |
| Aug | 4.02 | 4.04 | -0.02 |
| Sep | 3.43 | 3.20 | 0.23 |
| Oct | 2.81 | 2.86 | -0.05 |
| Nov | 1.58 | 1.60 | -0.02 |
| Dec | 1.08 | 1.09 | -0.01 |
31.52 | 31.26 | 0.26 |