| Comparison of Records at National Airport and Dulles Airport |
| Site Location | National Airport DC | Dulles, VA |
| Current Temperature | 66.2 ° F at 08/20/2008 07:52 | 62.6 ° F at 08/20/2008 07:52 |
| Maxumum Temp. Record |
101 ° F 1983 | 104 ° F 1983 |
| Minumum Temp. Record |
50 ° F 1896 | 47 ° F 1976 |
| Average Maximum |
86 ° F | 85 ° F |
| Average Minimum |
68 ° F | 62 ° F |
| Ave. Precip. Yr. Total |
32.88 Inches | 29.62 Inches |
| Ave. Precip. Month Total |
0.56 Inches | 1.22 Inches |
| NWS Text Weather Forecast for Fairfax County | ||