| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 0.76 | 0.80 | -0.04 | 
| Feb | 0.93 | 1.09 | -0.16 | 
| Mar | 1.77 | 1.90 | -0.13 | 
| Apr | 2.69 | 2.80 | -0.11 | 
| May | 2.67 | 2.71 | -0.04 | 
| Jun | 1.84 | 1.73 | 0.11 | 
| Jul | 2.32 | 2.60 | -0.28 | 
| Aug | 2.16 | 2.22 | -0.06 | 
| Sep | 1.68 | 1.74 | -0.06 | 
| Oct | 1.27 | 1.26 | 0.01 | 
| Nov | 1.00 | 1.01 | -0.01 | 
| Dec | 0.78 | 0.85 | -0.07 | 
| 19.87 | 20.71 | -0.84 |