Today (Saturday): We could reach 100 degrees today, at least with a coin toss. If so, it would be the first time the city has done so since 2016. As expected from the news, there will be plenty of sunshine. Most places will be over 100 degrees by lunchtime, with highs reaching 105 to 110 degrees by afternoon.
Highs across the region will range from 96 to 101 degrees, potentially threatening records especially in Baltimore (100 in 1988) and Dulles (99 in 1988). A record of 101 degrees in Washington DC in the same year is a bit far-fetched, though not entirely impossible. Confidence: Medium to High
tonight: Isolated storms will clear quickly as the sun sets, leaving partly cloudy skies and overcast skies. Heat index temperatures will rise to near 100 before dark and hover in the 90s overnight, making for an uncomfortable night. Lows will be in the mid 70s to low 80s, setting new records for warm lows. Reliability: Medium to High
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Tomorrow (Sunday): It will be very similar to today, but probably starting higher. The main question is how cloudy it will be in the afternoon. It usually takes almost complete sunshine to get super hot. Either way, it will be awful with temperatures in the mid 90s to around 100 degrees. With humidity, it will feel like 105 degrees. There may be scattered showers and storms moving in late afternoon. Reliability: Medium to High
tomorrow night: Scattered rain and storms will likely continue into the night. The cold front won’t pass through until before dawn or near sunrise, bringing more humidity and lows in the 70s F. Reliability: Medium to High
It’s hard to predict weather that’s close to 90 degrees Monday It looks like we’re taking a “break” from the heat, but it may feel that way after this weekend. Humidity will drop to moderate levels and the sun will be stronger, making it much more comfortable than today and tomorrow. Highs will be between 89 and 93. Reliability: Medium
TuesdayTemperatures will likely remain similar to Monday, maybe a degree warmer, but mostly in the low 90s. There will also still be plenty of sunshine and humidity levels will be relatively mild, but gradually increasing. Reliability: Medium
