JUNE 2015 CLIMATOLOGICAL SUMMARY REISTERSTOWN CITY MARYLAND by Observer in charge/NJWO member Ray Muller

JUNE 2015 CLIMATOLOGICAL SUMMARY
REISTERSTOWN CITY MARYLAND
by Observer in charge/NJWO member Ray Muller

Average maximum temperature 82.0°
Average minimum temperature 65.5°
Average mean temperature 73.8°
High temperature 93° (23/1549)
Low temperature 54° (3/0654)
Max daily range in temperature 26° 92°-66° (11)
Min daily range in temperature 8° 62°-54° (3)
Number of 90° or more days 6
Min max temperature 62° (3)
Max min temperature 73° (23)
Heating degree days 13
Cooling degree days 300

Monthly precipitation 12.10″
Year-to-date precipitation (through 6/30) 26.63″
Max precipitation in 6 hours 0.86″ (1)
Max precipitation in 12 hours 1.21″ (1)
Max precipitation in 1 calendar day 2.46″ (1)
Number of precipitation days with .01″ or more 17
Number of precipitation days wth .10″ or more 11
Number of precipitation days with .50″ or more 9
Number of precipitation days with 1.00″or more 5
Number of precipitation days with 2.00″or more 1

Weather types
Fog 12
Dense Fog 2
Thunder 14
Haze 7
Smoke 2

Sky cover
Clear days 4
Partly cloudy days 14
Cloudy days 12
Mean sky cover (sunrise to sunset) 6.3
Estimated percent of possible sunshine 52

Pressure
Highest barometric pressure 30.24″ (3)
Lowest barometric pressure 29.64″ (28)

Winds
Daily prevailing direction West
Mean speed 11.3 MPH
Fastest mile 29 MPH from 280° (9)
Peak wind gust 42 MPH from the W (9)
Gale wind days 3
Damaging wind days 0

Relative Humidity
Mean relative humidity
0700 89%
1300 64%
1900 67%
Minimum relative humidity 41% (9/1500)
Maximum relative humidity 100% on 9 separate days, mostly AM

Minimum visibility 1/4 mile in dense fog (2)
Number of days with:
stratus clouds 5
fractostratus clouds 16
cumulus clouds 20
stratocumulus clouds 10
altocumulus clouds 14
altostratus clouds 10
cirrus clouds 14
cirrostratus clouds 7
cirrocumulus clouds 6
cumulonimbus clouds 5
mammatus clouds observed during a few special weather observations

Number of days with lightning: cloud-to-cloud (8 observed)
and cloud-to-ground (10 observed)
On the 1st and 9th cloud-to-ground lightning strikes were less than a minute apart at times according to my lightning detector.

Summary: Rainfall was over 8 inches above normal this month. Temperatures were slightly above normal.
Based on short term records back to June 2011, this is the wettest June on record for the Reisterstown Office location.


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