The average temperature in April 2008 was 51.0 F. This was -1.0 F cooler than the 1901-2000 (20th century) average, the 29th coolest April in 114 years.
Also, some theories would hold warmer weather leads to more evaporation and thus more rain. Cooler temperatures, less evaporation and less rain.
2.39 inches of precipitation fell in April. This was -0.04 inches less than the 1901-2000 average, the 54th driest such month on record.
And, the cycle 24 sunspots have still yet to develop.