In a previous post I noted the largest one month rise for HADCRUT4 was in 1862/1863. AGW cult members are always talking about climate being 30 years.

So lets look at the greatest temperature rise in HADCRUT4 where the period is anywhere from 1 month to 360 months (30 years).

The winner at 1.296C was Jan 1864 to Feb 1878. Here are the top 25.

Months	FromMonth	FromYear	ToMonth	ToYear	Difference C.
169	Jan	1864	Feb	1878	1.296
205	Jan	1861	Feb	1878	1.262
170	Jan	1864	Mar	1878	1.244
171	Jan	1864	Apr	1878	1.225
182	Dec	1862	Feb	1878	1.225
206	Jan	1861	Mar	1878	1.21
263	Mar	1976	Feb	1998	1.193
207	Jan	1861	Apr	1878	1.191
341	Mar	1917	Aug	1945	1.191
183	Dec	1862	Mar	1878	1.173
288	Feb	1974	Feb	1998	1.166
61	Jan	1864	Feb	1869	1.158
184	Dec	1862	Apr	1878	1.154
342	Feb	1917	Aug	1945	1.145
206	Dec	1860	Feb	1878	1.143
201	May	1861	Feb	1878	1.139
313	Jan	1972	Feb	1998	1.138
183	Nov	1862	Feb	1878	1.134
312	Mar	1976	Mar	2002	1.132
335	Mar	1850	Feb	1878	1.131
289	Jan	1974	Feb	1998	1.13
311	Mar	1976	Feb	2002	1.13
121	Jan	1868	Feb	1878	1.129
330	Mar	1917	Sep	1944	1.127
86	Dec	1870	Feb	1878	1.125