West Rockville MD Weather

Pleasant autumn temperatures have arrived for this first half of October period, particularly 40s minimums. The rain has been a bit below normal but not terribly dry like in much of September with a total of 1.05″ falling during this period  Dew points have generally been in the comfortable 40s and 50s. There were no thunderstorm days with 2 Sunny/ Clear days, 10 Partly Cloudy and 3 Cloudy days. The minimum temperature for this period was 44.3° on the 4th….

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September 2020 was actually a tad cooler but a bit drier than normal. My maximum temperature average (74.5°) was actually 2.6° below normal which was enough to overcome my minimum temperature average of 59.4° which was only 2.3° above normal, resulting in the mean temperature average of 67.0° to be 0.1° below normal. My total precipitation of 3.49″ was 0.54” below the Prism-derived normal value for my station of 4.03”. I still am having reasonable doubts about that average being…

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The heat has left us, hopefully for good, during this mid-September month period. The rain also left us as the 0.08″ that fell from the weak TS Sally remains was the only measurable rain that fell during the period. Dew points fell significantly through the period from mid-upper 60s at the beginning of the period down to the 30s at the end of the period. There were no thunderstorm days with 5 Sunny/ Clear days, 4 Partly Cloudy and 2…

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The heat from July and August continues to reduce as we head into September but with dew points generally remaining high as tropical moisture is still quite persistently hanging on. This first third of September period’s rains (2.64 inches total) were from a SW flow of sub-tropical moisture. There were 2 thunderstorm days with 2 Sunny/ Clear days, 6 Partly Cloudy and 3 Cloudy days. The minimum temperature for this period was 59.0° on the 6th, our first spell into…

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The relentless heat from July stayed away during this last August period. but the dew points remained high through most of the days till the last few days with dew  points dropping into the 50s to foreshadow the coming fall. This last third of August period’s rains (0.95″ total) were from a persistent SW flow of sub-tropical moisture, highlighted by a visit from the Hurricane Laura remnants on the 29th. There were 3 thunderstorm days with 1 Sunny/Clear day, 6…

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The heat and high dew points from July have partially left us as extreme heat has not resurfaced so far in August. However dew point temps remain high, peaking well into the 70s at the beginning and end of this period. Oddly enough the dew point values were a bit lower during Isaias’ visit, helped by the lower temperatures that were occurring. Much more rain fell well to my south and east, along with higher winds, resulting in floods, downed…

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The heat and high dew points left from the first half of July carried forward through the rest of July. From July 16-31, dew point temps remained high, peaking during the hottest days of the period (19-20) when the dew point reached 81 on the 20th. Light to moderate rains (3.87″) were spread out fairly evenly through the period, falling on 8 of the 15 days. There were 7 thunderstorm days, 1 sunny/clear day and just 3 cloudy days. We…

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The heat and high dew points left from the tail end of June carried forward into the first half of the month of July.  But not to the extreme that the official Washington DC DCA station has recorded, as their streak of 20 straight days of 90 max temps or greater is still in tact (June 26-July 15). Within that same period my station only reached a max temp of 90 or greater six times!  From July 1-15, dew point…

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Our wetter patterns from earlier in the month “washed out” a bit during this end of the month period with only 2 significantly rainy days (both featuring thunderstorms) with warm, increasingly more humid days and milder nights taking over. 80s max temps prevailed on all days, with 60s mins on the first 7 days of the period turning into low 70s mins on the last 3 days of the month. We had three total measurable rainfall days (1.17″) during the…

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