The September just ended was the fourth-warmest on record in the Tri-Cities, and far more days than usual had temperatures of at least 90 degrees.
But after an unusually warm summer and start to fall, the Mid-Columbia should get some relief this month.
Temperatures should be near normal for October, according to the National Weather Service. Normal highs fall from 74 degrees at the start of the month to 58 degrees at the end. Normal lows fall from 47 degrees to 39 degrees.
Precipitation should be near or possibly above normal for the month, according to the weather service. Normal precipitation in November is 0.6 inch.
Three warm-weather records were set and two tied at Hanford in September, according to the Hanford Meteorology Station, which keeps daily records back to World War II.
-- On Sept. 13 a new high temperature record of 99 degrees was set for the date. That beat the old record of 98 degrees set in 1948.
-- On Sept. 14 the high temperature of 95 and on Sept. 15 the high temperature of 96 degrees tied the previous records for those dates.
-- On Sept. 11, the low temperature was 69 degrees, the warmest on record. The previous record was 66 degrees in 1969. The next day the low temperature was 70 degrees, warmer than the previous record of 67 degrees set in 1953.
Temperatures in the Tri-Cities averaged 70 degrees in September, which was 3.9 degrees above normal. That made it the fourth-warmest on record, with September 1938 the warmest with an average temperature of 70.8 degrees, according to the weather service.
Low temperatures were particularly warm. They averaged 58.9 degrees, which was 6.6 degrees above normal.
High temperatures in the Tri-Cities averaged 81.1 degrees, which was 1.2 degrees above normal. The highest, as measured in Kennewick, was 95 degrees on Sept. 12, and on 10 days the temperature was at least 90 degrees.
At Hanford the temperature in September averaged 69.3 degrees, which was 2.9 degrees above normal.
On 11 days the temperature was 90 degrees or warmer, compared to a normal of six days, according to the Hanford Meteorology Station.
That brought the total days for the year with temperatures of at least 90 degrees to 76 days, compared to a normal of 46 days. It was the third-highest total on record and only the fifth year on record with at least 70 days with temperatures of 90 degrees or higher.
However, there have been just 13 days this year with temperatures of at least 100 degrees at Hanford, compared to a normal of 14 days.
September was wetter than usual, with measurable amounts of rain falling on nine days in the Tri-Cities. It totaled 1.2 inches, which was 0.9 inch above normal.
Total precipitation for the year at Hanford has totaled 4.57 inches, which is about normal.
The peak wind gust in the Tri-Cities in September, as measured in Kennewick, was 40 mph on Sept. 28, according to the weather service. At Hanford the peak wind gust was 58 mph on Sept. 15.
-- Annette Cary: 582-1533; email@example.com