Summer for May through September. Years given are the year of the last month of the season. Type Means and Anomalies. Sea Level Pressure Climate Division Temperature Surface temperature averaged over US state climate divisions. Climate Division Precipitation Precipitation averaged over US state climate divisions.
Positive values indicate winds from the west.
Positive values indicate winds from the south. 700mb Omega Vertical velocity at 700mb. Positive values are downward. Information on the dataset and the dataset itself can be obtained from them.