Warm and Muggy October Days in the Twin Cities

STATE CLIMATOLOGY OFFICE - DNR WATERS --- FOR IMMEDIATE RELEASE --- OCTOBER 3, 2005

Subject: Warm and muggy October days in the Twin Cities.

On Sunday, October 2 the minimum temperature in the Twin Cities was 65 degrees. This set a record high minimum for the date, beating the old record of 62 set back in 1897. On Monday, October 3 it was even warmer with a minimum a sticky 72 degrees. This smashed the old record of 65 degrees set back in 1931. Not only did this break the record high minimum for the date, but it was the warmest minimum ever for October. The old record was 69 degrees set on October 8, 1997. It was one of only eight times the mercury has stayed at 65 or greater for a minimum temperature during an October day. The eight dates the thermometer stayed at or above 65 in October:


 Year Month Day Tmax Tmin
 1922  10     4   89   68
 1931  10     3   77   65
 1962  10    14   79   65
 1968  10    14   72   66
 1968  10    15   85   66
 1997  10     8   74   69
 2005  10     2   78   65
 2005  10     3   85   72

Not only was the Twin Cities seeing August-like temperatures, it was muggy as well. Air conditioners were getting a rare October workout. The dew point temperature hovered in the mid 60's for three days from October 2-4. The highest dew point temperature was 69 degrees on both October 3 and 4, setting records for those two dates. The old records were 64 degrees for October 3 set back in 1926 and the record for October 4 was 64 degrees in 1955.


STATE CLIMATOLOGY OFFICE - DNR WATERS --- FOR IMMEDIATE RELEASE --- OCTOBER 5, 2005

Subject: two more muggy October days in the Twin Cities

As mentioned in a narrative released Monday by this office, a all-time daily high dew point temperature record was set on Monday in the Twin Cities. This humid air mass persisted into Tuesday and early Wednesday, contributing to the extraordinarily heavy rainfall. One more high dew point temperature record has now been established in October 2005:

Daily Maximum Dew point Temperatures - Minneapolis/St. Paul International Airport
Monday, October 3       new record: 69 degrees F   old record: 64 (set in 1926)
Tuesday, October 4      new record: 69 degrees F   old record: 64 (set in 1955)
Wednesday, October 5    new record: 67 degrees F   old record: 65 (also set in 1955)

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URL: http://climate.umn.edu/doc/journal/warm_051003.htm
Last modified: October 7, 2005