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In Alaska, if all variables fall into place, the days near the solstice often produce the warmest temperatures several weeks before the normal temperatures peak. In Texas, the dry air from the Mexican Plateau allow for exceptional heat to move into Texas through the month of June, but is suppressed later in the summer. At the same time, a warming Gulf of Mexico slowly drives up the normal daily temperature through July (thanks to Richard Berler from KGNS in Laredo, Texas, for this analysis). South of Hudson Bay, a similar effect occurs in Ontario and Quebec.
