Climate Monitoring / Climate At A Glance / UNITED STATES / Help UNITED STATES Climate Summary April 2008 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. The temperature trend for the period of record (1895 to present) is 0.1 degrees Fahrenheit per decade. 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. The precipitation trend for the period of record (1895 to present) is 0.01 inches per...