FORECAST IN DETAIL
We have abnormally splendid summer to enjoy again, but it’s fleeting. Drier air, clearer skies, and comfortable–but still warm–high temperatures are the rules today. As we head through this weekend and into early next week, we have increasing chances of a more unfriendly summertime spell. What does that mean? More muggy air, more clouds, higher chances of showers and storms, and hotter temperatures. As long as you are celebrating the long weekend near some water, we won’t mind this increased sweat too much! Maybe?
Tonight: Roll those windows down if driving, or pull them up if staying at home. The air is nice. Do some recreation if you can! Skies stay mostly starry until nearer dawn, when low temperatures bottom out around 60 well north and west of down (in clearer spots) to upper 60s inside the Beltway. Note the crescent moon on the western horizon may be hazing up as the evening wears on and atmospheric moisture increases a bit, ahead of pre-dawn clouds. Breezes remain light around 5 mph out of the southeast. Shower chances may start just before dawn, at around 10%. Confidence: High
For related traffic news, check out Dr. Gridlock. Keep reading for the forecast through the weekend…
Tomorrow (Saturday): We could be fighting off some periodic clouds at times, but we still should see some sunshine. Nothing much should deter you from finding the nearest, pool, beach or park! Shower and thunderstorm chances remain low at around 10-20%. Yes, the humidity should be very noticeable, but may remain just below oppressive levels (dew points should stay below 70 degrees). High temperatures should get into the mid-80s fairly easily by late afternoon. Some spots south of town could near 90 degrees. Light south breezes may blow between 5-10 mph. Confidence: Medium-High
Tomorrow night: Any evening showers or an isolated storm (15-25% chance) should die quickly after sunset. The air remains muggy and thick. Breezes, if we are lucky enough to feel them, could lightly blow around 5 mph out of the south or southwest. Because of persistent clouds and the southerly direction of the breezes, temperatures barely cool at all. Some upper 60s might be possible outside of the Beltway, but a couple spots downtown may only bottom out in the mid-70s. Confidence: Medium
Sunday: May have more clouds than sun and a much more dynamic atmosphere. Still, be sure to use that sunscreen. Eventually by mid-to-late afternoon, the atmosphere should have a better (50-60%) chance of percolating some showers and storms. We should experience very muggy high temperatures in a toasty range of the upper 80s to low 90s. Remember if you hear thunder roar, head indoors! Be sure to avoid water and tall trees, as examples, please. Confidence: Medium
A LOOK AHEAD
Sunday night: Showers and thunderstorms may persist (40-50% chance) into the evening and early overnight hours. Even after rain dies down, clouds may persist. We may miss, by cloud obscuration, what CWG teammate David Streit calls “another impressive conjunction of the crescent moon, Mars, and Saturn in the western horizon after sunset.” Though who really wants to stand outside for long in such oppressively muggy air, eh? Overnight low temperatures barely cool before dawn, bottoming out in the upper 60s to lower 70s. Confidence: Medium
Our Labor Day (Monday) gives us a summery send-off. Sunshine should stay fairly bright, at least through morning hours. Perceptible humidity and some haze may also accompany temperatures heading up toward the mid-80s to around 90. Maybe a degree or two warmer, if afternoon thunderstorms (40-50% chance of occurring) don’t develop until very late in the day. Allow some extra time driving back from the beach, if you see storm clouds building. Confidence: Medium
Tuesday looks like a fairly typical summer weather day for D.C., with muggy, hazy, and hot conditions. High temperatures should at least hit 90 in most locations, if not mid-90s in a few spots south of town. Skies should remain bright enough to make you sweat under that sun, though showers and thunderstorms could erupt (30% chance) by afternoon. Confidence: Low-Medium
Beach Weather and water could be fairly ideal for beach-goers at all locations from NJ to NC!
Maryland beaches, and northward, should start the weekend in the upper 70s to lower 80s with Labor Day making the mid-to-upper 80s. Low temperatures mainly hold in the 60s. Virginia and North Carolina beaches should see high temperatures in the low-to-mid 80s climb to the upper 80s to lower 90s by Labor Day. Low temperatures range from mid-60s early in the weekend to lower 70s later. Thunderstorm chances do not really show up until Sunday night in most areas–even then they only rise to about 30%-45% on Monday. Ocean temps are mainly mid-to-upper 70s, and waves should only run 1-3 feet as winds remain on the light side behind our long-gone offshore hurricane, Cristobal.