Fairfield, California Climate Climate data for Fairfield, California

| Month_ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec_ | Year_ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Record high °F (°C) | 76 , (24) | 80 , (27) | 89 , (32) | 98 , (37) | 111 , (44) | 111 , (44) | 114 , (46) | 111 , (44) | 112 , (44) | 104 , (40) | 87 , (31) | 78 , (26) | 114 , (46) |
| Average high °F (°C) | 55.4 , (13) | 61.5 , (16.4) | 65.9 , (18.8) | 71.1 , (21.7) | 78.0 , (25.6) | 84.4 , (29.1) | 89.0 , (31.7) | 88.8 , (31.6) | 86.6 , (30.3) | 78.3 , (25.7) | 65.4 , (18.6) | 56.0 , (13.3) | 73.4 , (23) |