As September closed at midnight on Monday, things were expected to heat up in Washington, but not because of the government. After a month of temperatures that were close to normal, forecasts call for a string of 80-degree days in the Washington region.

Highs in the lower 80s are expected from Tuesday through Saturday, according to the National Weather Service. That is about 10 degrees above normal.

The expected 80-degree days would contrast with the string of 70-degree days that the nation’s capital has recently reveled in.

Monday, the last day of the month, was pleasant, and typical of the other days in the sequence. The high of 76 and low of 56, meant the day’s temperature was above average, but only by a single degree, according to weather service figures.

September began with two 90-degree days. It included three more on the 10th, 11th and 12th. But by month’s end, the average for the entire 30 days was less than half a degree above normal.

However, it has been dry. No rain fell Monday, leaving the month at 1.22 inches, exactly 21 / 2 inches below normal.

For the entire year, precipitation has been closer to the norm, a little more than half an inch below the normal amount to this point, 30.12 inches.