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Climate Room

Weather Now | Forecast Lab

Daily climate summary


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Data from ACIS

Warm and cool day counts

Washington, DC
Highs at or above 90° in 2026
days
Through May 18
Cumulative
90°+ day tick
1991-2020 avg
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Cumulative days
1991-2020 avg
Daily high
Data from ACIS

Data by month


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Data from ACIS

Annual temperature summary

Washington, DC
Observed temperatures in 2026
avg high
avg low
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Data from ACIS

Annual precipitation summary

Washington, DC
Precipitation in 2026
Deficit through May 7
Observed
Normal
Deficit
Surplus
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Observed
Cumulative
Normal cumulative
Departure
Data from ACIS

Winter season breakdown


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Data from ACIS

12-month precipitation

Washington, DC
Monthly Precipitation
12-month window - observed vs. 1991-2020 normals
-
12-month deficit
Average
Below normal
Above normal

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Observed
Normal
Departure
% normal
Data from ACIS

U.S. Drought Monitor

U.S. Drought Monitor – Washington region

Degree days


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Data from ACIS

CO₂ concentration