Unsettled would be a good word to sum up Thornton’s weather for June 2019. We experienced a series of troughs and fronts that kept things unsettled and suppressed temperatures. That however did not translate into a great deal of precipitation.
Cooler than normal temperatures were seen across much of the month. Even the later part of June saw some days with high temperatures only in the 60s.
It wasn’t even until the 26th of the month that Denver and Thornton recorded their first 90 degree day of the year. This was in fact the fifth latest occurrence of a 90 degree day in Denver and the latest since 1982.
Thornton’s average temperature for the month came in at 65.7 degrees. This made the month the second coolest June Thornton has recorded in 13 years. Denver saw a virtually identical average of 65.6 degrees. Both readings were below the long term Denver average for June of 67.4 degrees.
Temperatures in Thornton ranged from a high of 98.5 degrees of the 28th of the month down to a low of 40.7 degrees on the morning of the 10th. Denver’s highest reading of 96 degrees came on the 29th and its coolest of 42 degrees on the 10th.
Denver averages 1.98 inches of precipitation during the month of June. This year, Thornton fell short of the mark while Denver exceeded it. Here in Thornton we tallied 1.51 inches while Denver saw 2.24 inches.
Click here to view Thornton’s June 2019 climate report.


CLIMATE REPORT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
1129 AM MDT MON JUL 1 2019
...................................
...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF JUNE 2019...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2019
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 105 06/28/2018
06/26/2012
06/25/2012
LOW 30 06/02/1951
HIGHEST 96 06/29 104 -8 105 06/28
06/28
LOWEST 42 06/10 30 12 44 06/02
06/09
AVG. MAXIMUM 80.1 82.4 -2.3 88.8
AVG. MINIMUM 51.2 52.3 -1.1 56.0
MEAN 65.6 67.4 -1.8 72.4
DAYS MAX >= 90 5 7.9 -2.9 16
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.0 0.0 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 4.96 1882
MINIMUM T 1890
TOTALS 2.24 1.98 0.26 0.43
DAILY AVG. 0.07 0.07 0.00 0.01
DAYS >= .01 12 8.4 3.6 5
DAYS >= .10 6 4.6 1.4 2
DAYS >= .50 1 1.4 -0.4 0
DAYS >= 1.00 0 0.3 -0.3 0
GREATEST
24 HR. TOTAL 0.97 06/18 TO 06/18
SNOWFALL (INCHES)
RECORDS
TOTAL MM MM
TOTALS 0.0 0.0
DEGREE_DAYS
HEATING TOTAL 62 62 0 9
SINCE 7/1 6281 6058 223 5410
COOLING TOTAL 87 133 -46 241
SINCE 1/1 92 155 -63 289
FREEZE DATES
RECORD
EARLIEST 09/08/1962
LATEST 06/08/2007
EARLIEST 10/10 10/07
LATEST 05/22 05/05
.................................................................
WIND (MPH)
AVERAGE WIND SPEED 9.7
RESULTANT WIND SPEED/DIRECTION 3/182
HIGHEST WIND SPEED/DIRECTION 43/180 DATE 06/02
HIGHEST GUST SPEED/DIRECTION 56/200 DATE 06/02
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.60
NUMBER OF DAYS FAIR 1
NUMBER OF DAYS PC 26
NUMBER OF DAYS CLOUDY 3
AVERAGE RH (PERCENT) 54
WEATHER CONDITIONS. NUMBER OF DAYS WITH
0
5
0
1
0
0
1
HAZE 2
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.