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‘Exceptionally cold’ weather for May arrives tonight with near-freezing temperatures and bitter wind chills

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‘Exceptionally cold’ weather for May arrives tonight with near-freezing temperatures and bitter wind chills

Records are likely to fall in D.C., and there’s a ‘non-zero’ chance of snowflakes. Forecast wind chills at 8 a.m. Saturday from the American (GFS) model. Some of the coldest May weather the Washington region has experienced in modern times plunges into the area tonight and persists into the start of Mother’s Day. Freeze watches…

‘Exceptionally cold’ weather for May arrives tonight with near-freezing temperatures and bitter wind chills

Records are likely to fall in D.C., and there’s a ‘non-zero’ chance of snowflakes.

At Reagan National Airport

Forecast wind chills at 8 a.m. Saturday from the American (GFS) model.

A few of the coldest May weather the Washington area has experienced in modern-day times plunges into the area tonight and persists into the start of Mom’s Day. Freeze watches and warnings are in effect both tonight and Saturday night for numerous places west of the District. On Saturday, February-like wind chills in the 20 s start the day areawide.

The cold is thanks to a lobe of the polar vortex, crashing south into the eastern United States from the Arctic. Ratings of record low temperature levels are anticipated from Texas to Maine on Saturday.

The National Weather condition Service office serving the Washington area described an “incredibly cold air mass for May requirements” in recent forecast conversations, noting that temperatures at several different levels of the environment are most likely to challenge the least expensive levels on record for Might and are “more normal of mid winter.”

The average heat in Washington on Saturday is 74 degrees, whereas the actual high may have a hard time to go beyond the low 50 s, some 20 to 25 degrees below typical. Saturday is nearly specific to be the coldest Might day in Washington since a minimum of2008 Include winds gusting over 30 miles per hour and it will feel 10 degrees approximately cooler.

eastern United States

Predicted high temperature levels Saturday from the National Weather Service.

While computer models have withdrawed earlier forecasts for some wet snow in the area, there is still an outdoors opportunity a couple of flakes could blend with rain in our colder areas either late Friday or in any passing showers on Saturday. Snow this late in the spring has actually happened only 2 times in weather records going back to the late 1800 s in Washington.

Frost and freeze advisories for Friday and Saturday nights


HRRR model temperature projection between 8 p.m. Friday and 8 a.m. Saturday.

After increasing into the 60 s Friday, temperature levels throughout the region are forecasted to drop into the 30 s Friday night. The biggest drop in temperature is expected between 8 p.m. and 2 a.m. in the wake of the Arctic front. That’s also when a couple of snowflakes might mix in with rain, mainly towards the Interstate 81 passage and into the mountains. By the predawn hours, the majority of spots along and west of Interstate 95 ought to remain in the 30 s.

The finest possibility of freezing temperatures Friday night into Saturday early morning is close to and west of the Interstate 81 corridor, where a freeze caution is in result. In this zone, the Weather condition Service predicts temperature levels as low as 29 degrees. This zone includes Hagerstown and Winchester.

Temperatures might come close to freezing early Saturday in areas simply to the east of Interstate 81 corridor, consisting of a few of Washington’s far western and northern residential areas, which are under a freeze watch This zone includes northern Montgomery, western Howard and Frederick counties in Maryland (consisting of Germantown and Frederick), in addition to Loudoun and Fauquier counties (including Warrenton, Ashburn and Leesburg) in Virginia. Here the Weather Service states lows could drop to 31 degrees.

Its gon na feel more like March than May this weekend. Freeze potential is focused in areas west of DC and Baltimore tonight thanks to a gusty wind, but might be more widespread Saturday night as light winds, clear skies and dry air allow temperatures to plummet.

— National Weather Service Baltimore-Washington (@NWS_BaltWash) May 8, 2020

On Saturday night, the freeze watch expands further east, as temperature levels might drop a couple of degrees lower, and consists of some of Washington’s close-in western and northern residential areas, consisting of main and southern Montgomery, southern Howard, Fairfax, Prince William and Stafford counties.

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” Frost and freeze conditions could kill crops, other delicate greenery and perhaps harm unguarded outside plumbing,” both the freeze watch and cautioning state.

The informs even more recommend: “Take steps now to protect tender plants from the cold. To avoid freezing and possible bursting of outdoor pipes they should be covered, drained pipes, or enabled to drip gradually. Those that have in-ground sprinkler systems ought to drain them and cover above-ground pipelines to secure them from freezing.”

While Dulles International Airport could see freezing temperature levels on both Saturday and Sunday mornings, cold of this magnitude so late in the season is not extraordinary there.

Dulles’s latest freeze on record occurred on May 22, 2002, and, as just recently as in 2013, it occurred on Might14 This is why, if you live well north and west of the Beltway, it’s typically not safe to put in delicate plants until around Mom’s Day– with this year a case in point. Dulles’s average last freeze is around April 20.

Locations around downtown Washington and near the Potomac River and Chesapeake Bay should just see lows in the mid-30 s to near 40, where freeze issues are low.

The weekend weather condition might make history

The cold is most likely to establish or at least difficulty numerous low-temperature records and turning points for the region thinking about the time of year.

The National Weather condition Service put together an useful summary of all the records that could be challenged this weekend at Washington and Baltimore’s three airport areas, not simply for temperature however likewise for snow, considering a “non-zero” chance of flakes:


Snow and cold records which might be challenged between Friday night and Sunday. (National Weather Service)

The most likely records to be beaten consist of Baltimore-Washington International (BWI) Marshall Airport’s record low of 36 on Saturday, the record cold heats on Saturday at all three airports, and Dulles Airport’s record low of 33 on Sunday.

In addition to these records, think about the other possible temperature turning points that could take place:

  • If the high in Washington remains below 55 Saturday, it will be the very first such instance during May considering that2008 As recently as 2003, nevertheless, it occurred twice throughout the month.
  • In the not likely occasion temperature levels remain below 50 in Washington on Saturday, it would be the first instance because 1946 in May. Highs in the 40 s have actually taken place just 3 times in the modern-day record going back to 1871.
  • At Reagan National Airport, where Washington’s weather records have been kept since 1945, Saturday’s high could challenge the coldest mark so late in the season, embeded in 2008, when the high was 52.
  • While it is not likely temperatures will fall this far at National, if they drop to 34 either Saturday or Sunday, it would match the lowest so late in the season, embeded in 1947.
  • If the temperature level drops below 40 in Washington either Saturday or Sunday early morning, it would be almost a month later than typical. The average last date with a low in the 30 s in Washington is April 11.
  • If temperature levels at National drop into the 30 s, it would be only the 8th time this late or later on in the season, and the first circumstances of 30 s in May since 2005, when the thermometer dipped to 38 on May 3.

When it will turn warm?

Temperatures will remain cooler-than-normal through the middle of next week, however all indications point to a rather abrupt pattern change and arrival of warm weather condition in roughly 7 days.


Low and high temperature level forecast over the next 15 days from the European modeling system. (WeatherBell)

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