WEST ROCKVILLE MARYLAND WEATHER UPDATE – SATURDAY JULY 31, 2021
Saturday was a pleasantly cool end to the month of July. We only warmed up to the upper 70s by late afternoon under partly sunny skies most of the day that yielded
to mostly cloudy skies by early evening. The daily minimum temperature in the mid 60s was reached in the morning a few hours after sunrise.
The peak winds (only 15 MPH) were pretty light all day, strongest in the early afternoon, veering slightly to a westerly direction. Barometric pressures were highest
in the mid morning while the lowest were in the mid evening hours as our next rainy system starts to move in from the west.
Sunday should be mostly cloudy with rain starting early during the overnight, with highs around 80 and lows in the low 60s. Monday should be sunny, Tuesday cloudy,
and Wednesday and Thursday partly cloudy with little chances for rain, with highs in the low 80s and lows in the low-mid 60s.
Statistics for Saturday:
High temp 78.9 at 1739
Low temp 66.1 at 0745
Max humidity 77% at 2341
Min humidity 55% at 1339
Max dew point 65 at 2214
Min dew point 55 at 1339
Max barometric pressure 30.06″ at 1016
Low barometric pressure 29.93″ at 2051
Peak Wind Gust (PWG) 15 MPH from the W at 1411
Saturday’s average daily wind speed 5.4 (BWI) 4.1 (IAD)
Saturday’s average sky cover 0.6 (BWI) 0.6 (IAD)
Daily total precipitation 0 (BWI 0 IAD 0 – note total July monthly amounts 3.65 BWI and 2.43 DCA) Also please note a correction to my daily total precipitation for 7/17 –
1.28″ is the corrected value.
July total precipitation 3.36″ (updated with correction)
Year-to-date total precipitation 17.66″ (updated with correction – however this amount is under further review as my spreadsheet calculations show this amount should be 19.02″)
Sunrise 0609 (EDT)
Sunset 2021 (EDT)
Moon Last Quarter
Currently at 0207 AM EDT Sunday we have cloudy skies with a temperature of 70.0, barometer 29.91″ and falling, relative humidity 86%, dew point 66, winds SSW-SSE at 0-5 MPH. No rain has fallen since midnight into the tipping bucket VP2 gauge at the USG site across the street from me.
The attached image for today shows storm clouds building around 1600 on Thursday with rain sprinkling down a little bit outside of the entrance to my apartment building.