Meteorological Services
April Temperature Statistics
The following table lists the daily mean and record temperatures (°F) at Brookhaven National Laboratory for each day of the month. The period covered is from 1949 to 2006.
| Maximum | Minimum | ||||||
| Day | Mean | Average | High | Year | Average | Low | Year |
| 1 | 42.5 | 53.2 | 70.5 | 1955 | 31.8 | 8.0 | 1964 |
| 2 | 43.6 | 53.6 | 76.0 | 1967 | 33.5 | 12.0 | 1964 |
| 3 | 43.3 | 53.4 | 78.5 | 1967 | 33.2 | 14.0 | 1954 |
| 4 | 43.3 | 52.7 | 68.0 | 1963 | 33.8 | 9.5 | 1954 |
| 5 | 43.7 | 54.3 | 69.0 | 1988 | 33.1 | 16.0 | 1954 |
| 6 | 43.0 | 53.3 | 72.5 | 1991 | 32.7 | 17.5 | 1970 |
| 7 | 44.4 | 54.4 | 81.0 | 1991 | 34.4 | 16.0 | 1968 |
| 8 | 43.9 | 53.9 | 86.0 | 1991 | 33.9 | 23.0 | 1979 |
| 9 | 43.7 | 54.4 | 76.0 | 2001 | 33.0 | 19.0 | 1977 |
| 10 | 44.7 | 56.3 | 79.0 | 1955 | 33.1 | 15.5 | 1977 |
| 11 | 43.8 | 54.8 | 83.0 | 1955 | 32.7 | 18.0 | 1960 |
| 12 | 45.0 | 57.3 | 87.0 | 1977 | 32.8 | 19.5 | 1968 |
| 13 | 45.0 | 55.8 | 83.0 | 1977 | 34.3 | 16.0 | 1956 |
| 14 | 46.0 | 57.4 | 76.0 | 1949 | 34.5 | 19.0 | 1959 |
| 15 | 47.3 | 58.5 | 83.0 | 1960 | 36.1 | 20.0 | 1957 |
| 16 | 48.3 | 59.2 | 89.5 | 2002 | 37.4 | 18.0 | 1957 |
| 17 | 48.1 | 59.3 | 94.5 | 2002 | 36.8 | 20.5 | 1971 |
| 18 | 49.6 | 61.7 | 89.5 | 2002 | 37.4 | 20.5 | 1962 |
| 19 | 49.2 | 61.0 | 82.0 | 1985 | 37.5 | 23.0 | 1956 |
| 20 | 49.1 | 60.8 | 85.5 | 1976 | 37.3 | 20.5 | 1956 |
| 21 | 49.5 | 61.1 | 86.5 | 1957 | 37.9 | 22.0 | 1951 |
| 22 | 50.5 | 61.6 | 83.0 | 1985 | 39.4 | 22.0 | 1975 |
| 23 | 50.0 | 61.3 | 83.5 | 1973 | 38.6 | 25.0 | 1994 |
| 24 | 49.7 | 60.0 | 79.0 | 1957 | 39.4 | 24.0 | 1951 |
| 25 | 49.4 | 60.6 | 84.0 | 1960 | 38.2 | 25.0 | 1965 |
| 26 | 50.3 | 61.2 | 80.0 | 1985 | 39.4 | 24.0 | 1963 |
| 27 | 50.7 | 62.0 | 85.5 | 1990 | 39.4 | 25.0 | 1956 |
| 28 | 51.1 | 62.2 | 89.0 | 1990 | 40.1 | 21.5 | 1972 |
| 29 | 51.5 | 62.7 | 83.5 | 1974 | 40.2 | 24.5 | 1968 |
| 30 | 51.8 | 63.9 | 80.5 | 1956 | 39.8 | 25.0 | 1967 |
| Mean | 47.1 | 58.1 | 81.5 | 36.1 | 30.1 | ||
