The month of June was highly variable, as Colorado’s weather always is. However, high pressure dominated the pattern overall leading to a month with temperatures slightly above normal and precipitation below average.
We started out on the cool side of things and enjoyed a very wet first day of the month. Little did we know that the moisture we received on that day would make up the vast majority of the total for the entire month.
High pressure built and the next 10 days were largely dry and warmer than normal. The 11th, 12th and 13th did finally bring some precipitation to Thornton although the first two of those three days was unseasonably warm.
For the latter half of the month, dry and warm were the key weather words. Temperatures were above normal on 14 of the 17 days and only three days saw precipitation.
Thornton’s overall monthly temperature came in at 71.3 degrees. That is well above Denver’s historical June average of 67.4 degrees. Out at the airport, Denver’s average came in a bit cooler at 70.8 degrees.
Temperatures in Thornton ranged from a high of 98.6 degrees on the 21st down to a low of 47.6 degrees on the 14th. The Mile High City saw its highest reading of 98 degrees on the 21st as well and its coolest of 49 degrees on the 2nd.
In terms of precipitation, Denver averages 1.98 inches during the month of June. Here in Thornton we saw 1.75 inches while DIA recorded 1.62 inches.
Click here to view Thornton’s June 2016 climate report.


CLIMATE REPORT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
515 PM MDT SAT JUL 2 2016
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...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF JUNE 2016...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2016
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 105 06/26/2012
06/25/2012
LOW 30 06/02/1951
HIGHEST 98 06/21
LOWEST 49 06/02
AVG. MAXIMUM 85.5 82.4 3.1 82.9
AVG. MINIMUM 56.2 52.3 3.9 56.1
MEAN 70.8 67.4 3.4 69.5
DAYS MAX >= 90 12 7.9 4.1 6
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 1.62 1.98 -0.36 2.53 DAILY AVG. 0.05 0.07 -0.02 0.08 DAYS >= .01 7 8.4 -1.4 13
DAYS >= .10 4 4.6 -0.6 5
DAYS >= .50 1 1.4 -0.4 2
DAYS >= 1.00 0 0.3 -0.3 0
GREATEST
24 HR. TOTAL 0.63 06/13 TO 06/13 06/05 TO 06/05
DEGREE_DAYS
HEATING TOTAL 4 62 -58 11
SINCE 7/1 5560 6058 -498 5583
COOLING TOTAL 185 133 52 154
SINCE 1/1 188 155 33 158
FREEZE DATES
RECORD
EARLIEST 09/08/1962
LATEST 06/08/2007
EARLIEST 04/01 10/07
LATEST 05/08 05/05
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WIND (MPH)
AVERAGE WIND SPEED 9.0
RESULTANT WIND SPEED/DIRECTION 3/168
HIGHEST WIND SPEED/DIRECTION 43/270 DATE 06/13
HIGHEST GUST SPEED/DIRECTION 56/260 DATE 06/24
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.50
NUMBER OF DAYS FAIR 8
NUMBER OF DAYS PC 20
NUMBER OF DAYS CLOUDY 2
AVERAGE RH (PERCENT) 52
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 13 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 3
LIGHT RAIN 11 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 1
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 7 FOG W/VIS <= 1/4 MILE 0
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.