Tuesday, October 1, 2013

September 2013 Lincoln, NE, Climate Summary

Headline:  September 2013 was warmer and drier than normal for Lincoln, NE.

The highest temperature observed in Lincoln, NE in September 2013 was a record high of 100F on September 9 and this was also the highest temperature for the year.  

It is interesting to note that Lincoln, NE also hit 100F on August 30, 2013 as well as back on May 14, 2013.  There has been no other year like this in the data archive (which extends back to 1887) with such an early first 100F or higher and another 100F or higher at the end of the summer season.

The September 2013 precipitation total in Lincoln, NE was 1.99 inches or 1.03 inches below normal.  September was the 4th month in a row with below normal precipitation for Lincoln, NE.  The total June 1-September 30, 2013 precipitation in Lincoln was only 6.59 inches or 7.65 inches below the normal June-September total of 14.24 inches (see the table below the graph for the Year 2013 precipitation totals).  The total June 1 -September 30, 2013 precipitation was only 45% of normal.

The following graph shows the Lincoln, NE, September 2013 daily high and low temperatures compared to normal daily highs and lows.  NOTE:  September 2013 statistics are located below the graph.
The Red Line is the normal high and the Blue Line is the normal low.
The top of each vertical bar is the high for the day and the bottom of each vertical bar is the low for the day.
Lincoln, NE, Year 2013 Monthly Precipitation compared to normal

Here are the Lincoln, NE, summary statistics for September 2013.

September 2013 Temperature Statistics:
Average High Temperature 83.6 F (4.9 degrees ABOVE Normal)
Average Low Temperature 57.6 F (4.3 degrees ABOVE Normal)
Mean Temperature 70.6 F (4.6 degrees ABOVE Normal)
Note: Mean temperature = the average of all the highs and lows
Number of days ABOVE Normal = 21
Number of Days BELOW Normal = 6
Number of Days exactly Normal = 3
Number of Days 90F or higher = 9 days (5 days above normal)
Number of Days 90F or higher January 1-September 30, 2013 = 41 days (exactly normal)
Highest temperature 100 F on September 9 (hottest day of the year along with the 100 F on
           May 14 and August 30)
Lowest temperature 43 F on September 29
Record high temperature of 100F tied on September 9 (also set in 1931)

September 2013 Precipitation Statistics:
Total precipitation 1.99 inches (1.03 inches BELOW Normal)
Heaviest precipitation 0.62 inches on September 10
Normal January 1 - September 30 precipitation =  24.58 inches
Total precipitation January 1-August 31, 2013 = 22.44 inches
January 1 - September 30 precipitation deficit =  2.14 inches

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