We predict the coolest and wettest October in 11 years in D.C.

It may be hard to come back from this cold and wet start to the month.

October is rolling in like a chilled pumpkin beer. Monday morning’s lows in the 40s came two weeks ahead of the first instance of 40s last year in Washington. Highs in the 50s are also a sharp contrast to the 80s on this date in 2021. With over an inch of rain already, October has experienced a dismally cool start that will be hard to overcome by Halloween.

Our October outlook favors temperatures to near to below normal — 0 to 3 degrees cooler than the 30-year average of 60.8 degrees; last year’s average was a very warm 66.3 degrees.

We project rainfall to be near to above normal, 0 to 0.5 inches above the 30-year normal of 3.66 inches; last year registered a slightly dry 3.27 inches.

Our most recent cooler-than-normal October was 2015, while our most recent wet October was 2020. But our most recent cool and wet October together was 11 years ago.

https://www.washingtonpost.com/weather/2022/10/03/dc-october-outlook-2022-cool/?