May was the fourth rainiest May on record for Longmont at the National Weather Service station.
Longmont saw 6.5 inches of rain this past May. The rainiest May ever as measured at one station was in 1995 when 7 inches fell. In 1957, there was 6.88 inches of rain and 6.86 in 1978. Data was missing for this station from 2003-2017.
This past month, the Longmont station received nearly two inches of rain on May 12 alone, according to NWS reporting. Precipitation was measured on 14 of the 31 days of the month, plus another three days with trace amounts, per CoCoRaHS.
According to the Colorado Climate Center, Longmont typically receives about 1.97 inches in May, making this past May more than 300% above average for precipitation. However, March and April were below average for precipitation in Longmont.
Just five days into June, precipitation is already at 1.48 inches. Longmont averages 1.75 inches for the whole month.
The precipitation has been benefiting all of Colorado. According to the U.S. Drought Monitor, as of May 30, more than three-quarters of the state is out of any short-term drought, including Longmont.
None of the state is considered to be in exceptional drought, the worst of the conditions, and only a small portion of the southeastern corner of the state is seeing extreme drought.
