Thursday was very cold, sunny, with slowly lessening winds. My coldest min temperature of the season so far in the early AM (6.3°) was followed by daytime temperatures that mostly held in the teens, easily the coldest day of the year and season so far. The winds not only lessened by late afternoon, but in the evening started to switch around to a light southerly direction that made for a not so cold evening in the teens. Colder mins and maxs were recorded back a year ago in early January 2018, so this cold is not unprecedented even with my short station history. Snow pack evaporated a bit in the very dry air, with dew point temperatures mostly below zero all day. 

The maximum temperature was 20.8° at 1647.

The minimum temperature was 6.3° at 2354.

Dew point temperatures ranged from a low of -11° @ 0357 up to a high of 5° @ 2247.

Relative humidity values ranged from a low of 31% @ 1300 up to a high of 65% @ 2224.

Barometric pressure ranged from a low of 30.35″ @ 0000 up to a high of 30.54″ @ 1049.

Thursday had no precipitation. My final January monthly total is 3.58″ and is also my year-to-date total for 2019.

No snow fell on Wednesday. 1.5 inches of snow remains on the ground. My year-to-date snowfall is now 14.9″ with the seasonal total at 17.0″.

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.

Friday should moderate some with highs in the mid 20s, lows in the mid teens with cloudy skies and 1-2″ of snow falling later in the day possible from a midwest clipper system as we are in a winter weather advisory. 

Saturday and Sunday will moderate some more, with highs in the mid 40s on Saturday and low 50s on Sunday and lows in the 20s on Saturday and mid 30s on Sunday under partly cloudy skies.

Early in the week milder conditions continue, with mid-upper 50s on Monday and Tuesday with lows above freezing both days under clear skies Monday and partly cloudy skies on Tuesday.

Midnight Thursday night found the temperature at 14.7°, relative humidity 59%, pressure steady at 30.46″ and the dew point at 2.9° under partly cloudy skies.

Currently at 0527 the temperature is 17.4° under cloudy skies, relative humidity at 49%, barometric pressure steady at 30.47″, and the dew point at 1°.

Good morning from the Snowywalrus on this cloudy, not quite as cold Friday.