Abnormally chilly weather to hover over D.C., may delay cicada outburst. [View all]
Highs in the 60s and lows in the 40s may hold off a mass cicada emergence for one to two more weeks.
Late April and the start of May offered a flash of summer, but warm weather has now retreated and may not return until the second half of the month. This may keep the much-anticipated outburst of cicadas at bay for at least one to two more weeks.
An unusually chilly weather pattern, not unlike what Europe has experienced for weeks, has just begin to settle over the eastern United States.
High temperatures most afternoons over the next seven to 10 days are not predicted to exceed the 60s, while nighttime lows will frequently dip into the 40s to near 50. The daily average temperatures, hovering in the 50s, will chill soils and probably keep most cicadas underground.
Cicada emergence is tied to soil temperatures at or above 64 degrees. They flirted with that threshold in recent days, and cicada sightings trickled in on our social media feeds. But the cicada swarm will probably await more sustained warmth.
https://www.washingtonpost.com/weather/2021/05/06/cicada-forecast-dc-cool-weather/?
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