Mesonet Rainfall by Month Table
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Norman (NRMN) rainfall in inches per month
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Total |
| 30-Year Normal | 1.44 | 1.84 | 3.16 | 3.25 | 5.36 | 4.70 | 2.83 | 2.51 | 3.95 | 3.75 | 2.51 | 2.08 | 37.39
|
| Mesonet Average | 1.07 | 1.39 | 2.66 | 2.90 | 4.19 | 5.01 | 3.41 | 4.18 | 2.46 | 3.19 | 1.49 | 1.47 | 33.42 |
| 1994 | * | * | * | * | * | * | * | * | * | * | * | * | * |
| 1995 | * | * | * | * | * | * | * | * | * | * | * | * | * |
| 1996 | * | * | * | * | * | * | * | * | * | * | * | * | * |
| 1997 | * | * | * | * | * | * | * | * | * | * | * | * | * |
| 1998 | * | * | * | * | * | * | * | * | * | * | * | * | * |
| 1999 | * | * | * | * | * | * | * | * | * | * | * | * | * |
| 2000 | * | * | * | * | * | * | * | * | * | * | * | * | * |
| 2001 | * | * | * | * | * | * | * | * | * | * | * | * | * |
| 2002 | * | * | * | * | * | * | 3.37 | 1.98 | * | 4.30 | 0.68 | 2.27 | * |
| 2003 | 0.05 | 1.28 | 1.94 | 3.02 | 1.93 | 6.07 | * | 5.55 | 3.19 | 0.77 | 0.76 | 0.97 | * |
| 2004 | 2.13 | * | 3.80 | 1.79 | 0.40 | 8.11 | 4.37 | 3.55 | 0.48 | 4.16 | 4.93 | 0.71 | * |
| 2005 | 2.17 | 2.15 | 0.27 | 1.02 | 1.78 | 3.87 | 2.60 | 4.92 | 1.24 | 2.45 | 0.00 | 0.24 | 22.71 |
| 2006 | 0.29 | 0.26 | 2.26 | 3.35 | 3.52 | 2.63 | 2.05 | 2.15 | 2.96 | 2.51 | * | 3.12 | * |
| 2007 | 1.98 | 0.65 | 5.81 | 2.16 | 10.43 | 10.82 | 8.08 | 6.09 | 2.98 | 2.80 | 0.77 | 3.52 | 56.09 |
| 2008 | 0.24 | 1.56 | 3.16 | 4.64 | 4.09 | 5.90 | 0.76 | 10.26 | 1.42 | 1.62 | 1.35 | 0.97 | 35.97 |
| 2009 | 0.90 | 0.93 | 2.12 | 4.94 | 5.23 | 1.27 | 3.56 | 4.59 | 3.73 | 6.97 | 0.30 | 1.19 | 35.73 |
| 2010 | 1.32 | 3.74 | 1.21 | 3.03 | 3.30 | 4.03 | 5.55 | 0.67 | 4.10 | 1.40 | 0.71 | 0.17 | 29.23 |
| 2011 | 0.06 | 1.00 | 0.09 | 2.28 | 6.99 | 2.35 | 0.34 | 2.06 | 2.03 | 4.92 | 3.87 | 1.57 | 27.56 |
| 2012 | 1.58 | 0.91 | 5.95 | 2.72 | * | * | * | * | * | * | * | * | * |