Monday was partly to mostly cloudy, colder and dry. High temperatures reached the mid 30s at midnight then slipped down in the mid 20s by mid-morning. Temperatures gradually cooled off after peaking some again in the mid afternoon down into the upper 20s by midnight observation time. 

The maximum temperature was 36.7° at 0001.

The minimum temperature was 26.5° at 0921.

Dew point temperatures ranged from a high of 19° @ 0020 down to a low of 7° @ 1300.

Relative humidity values ranged from a high of 57% @ 0230 down to a low of 31% @ 1605.

Barometric pressure ranged from a high of 30.17″ @ 0940 down to a low of 30.02″ @ 1700.

Monday had no precipitation. My January monthly total is 3.54″ and is also my year-to-date total for 2019.

My year-to-date snowfall is on hold temporarily unfortunately at 12.7″ with the seasonal total at 14.8″. I will have additions to these figures in Monday’s report with new snow falling Monday afternoon (see today’s featured image). 

My current online data (except for rainfall/snowfall – use the cocorahs link shown below for that dataset) is showing regularly on Weather Underground. My data is posted there every 5 minutes. My ID is KMDROCKV200 and my station is called “Gardens of Traville.” Data is online, normally just about in real-time now as it is
being updated on a 5 minute interval. The web address for my data on weather underground is:
https://www.wunderground.com/personal-weather-station/dashboard?ID=KMDROCKV200

I contribute my precipitation data daily to CoCoRaHS as Rockville 2.8 WNW, Station ID MD-MG-115 on https://www.cocorahs.org/

Please remember that Weather Underground precipitation data reflects what is recorded automatically through the tipping bucket VP2 gauge, just as it does on WxLink 2.0. The tipping bucket has been producing erratic values at times so should not be used save for general precipitation timing. For example during our big snowstorm earlier this month the snow didn’t melt at all during the storm, and only started to record precipitation amounts a few days later when the sun and above freezing temperatures started to melt the snow.

I actually use the data I post to CoCoRaHS from my 4 inch CoCoRaHS gauge I read manually as my “official” precipitation total each day. I also use a snow stake outside my balcony window to get an idea on how much snow has fallen (while it is snowing) and how much snow is on the ground.

Tuesday has been cloudy with midday light rain changing quickly over to snow as temps drop from the mid 30s to the low 30s currently and heading downward into the 20s by midnight with snow for a few more hours.   1-2 inches on the ground now (with snow covered roads and sidewalks); perhaps another inch before ending this evening. Clearing
out slowly later in the evening.

On Wednesday and Thursday, very cold temps/wind chills will be definitely in evidence. Wind chills may reach down to below the zero mark, air temps should only max out generally in the low 20s with lows in the low-mid teens, perhaps dipping into the single digits on Thursday morning. Sunny skies will at least warm the heart at times when the wind slacks off like it will occasionally.

Friday should moderate some with highs around 30°, lows in the upper teens with cloudy skies and snow showers likely at times.

Saturday and Sunday will moderate some more, with highs around 40° on Saturday and low 50s on Sunday and lows in the 20s under partly cloudy skies.

Midnight Monday night found the temperature at 28.4°, relative humidity 57%, pressure falling at 30.02″ and dew point at 15.1° under increasingly cloudy skies.

Currently at 1620 the temperature is 32.4° under cloudy skies and 1/2 mile visibility with light snow, relative humidity at 93%, barometric pressure rising at 29.86″, and the dew point at 31°.

Good afternoon from the Snowywalrus on this beautifully snowy, colder Tuesday. (Make sure you note today’s featured image, esp after enlarging the screen, showing this afternoon’s snow at 1530 EDT)