HADCRUT4 for Dec 2012 is out. The anomaly was .269C.
I looked at HADCRUT3 in a previous post.
Here is a list of months with a warmer anomaly than Dec 2012 that came before 1990.
| year | month | Anomaly |
| 1878 | 2 | 0.395 |
| 1878 | 3 | 0.348 |
| 1878 | 4 | 0.334 |
| 1944 | 1 | 0.29 |
| 1944 | 9 | 0.295 |
| 1945 | 8 | 0.355 |
| 1958 | 1 | 0.277 |
| 1973 | 2 | 0.269 |
| 1979 | 12 | 0.357 |
| 1981 | 1 | 0.333 |
| 1981 | 12 | 0.269 |
| 1983 | 1 | 0.431 |
| 1983 | 2 | 0.313 |
| 1987 | 2 | 0.284 |
| 1987 | 12 | 0.316 |
| 1988 | 1 | 0.385 |
| 1988 | 3 | 0.275 |
sunshine hours 