Wisconsin State Climatology Office
 John Young, Director & Professor Emeritus
Your climate information resource for Wisconsin
Wisconsin State Climatology Office
Wisconsin Climate Watch
  -Archive
  -Water Systems
  -Agriculture

Wisconsin Seasons

Wisconsin Climate History

Other Climate Data Links & Maps


Climate Change

Climate News

Climate Education & Outreach


Who We Are

SCO Site Map

Wisconsin Climate Watch


State Bulletin

Last 24 Hours

Last 7 Days

Last 30 Days

Last 90 Days

Monthly

Last 12 Months

Outside Wisconsin

Forecasts & Outlooks

CoCoRaHS


State Bulletin

LATE AUTUMN REPORT:  VARIABILITY WITH A WARM ENDING

Prof. Emeritus John Young, Wisconsin State Climatology Office Director
Dr. Edward Hopkins, Climatologist

9 November 2009

The persistent North American jet stream pattern that produced a chilly summer in Wisconsin became variable in the autumn. It started with a major shift to a warm September, followed by a cool October, and now is developing warm ending for November. So, while October felt like November, the reverse may be true for November.

The very dry conditions of late summer and September were slightly relieved by above-normal rains in late September and October. However, the year-long persistent rainfall deficit in northwestern Wisconsin continues to sustain a state of moderate drought  there.  The northwest division of the state has been below normal for several years, and deficits there have been particularly dramatic during 2009, until October. The U.S. Drought Monitor may be consulted for maps and animations for recent years.

Long-range outlooks indicate a probability of above normal temperatures for much of the remainder of November. Rainfall for the next weeks to months will tend to be more normal, probably not enough to provide a definite end to the northwestern Wisconsin deficit. These outlooks take into account computer projections of weather patterns, the tropical cycle called Madden-Julian Oscillation (MJO), the developing weak El Niño conditions in the Pacific, and recent climate trends. Details may be found at the NOAA Climate Prediction Center site.

ast 24 Hours - Courtesy of NWS Sullivan

Last 7 Days (Statewide Maps) - updated by 10:30am Central Time

Precipitation (inches)Mean
Temperature (F)
Low Temperature (F)High Temperature (F)
Precipitation Departure (inches)Mean Temperature Departure (F)Low Temperature Departure (F)High Temperature Departure (F)
Precipitation Percent of Average   

Last 30 Days (Statewide Maps) - updated by 10:30am Central Time

Precipitation (inches)Mean
Temperature (F)
Low Temperature (F)High Temperature (F)
Precipitation Departure (inches)Mean Temperature Departure (F)Low Temperature Departure (F)High Temperature Departure (F)
Precipitation Percent of Average   

Last 90 Days (Statewide Maps) - updated by 10:30am Central Time

Precipitation (inches)Mean
Temperature (F)
Low Temperature (F)High Temperature (F)
Precipitation Departure (inches)Mean Temperature Departure (F)Low Temperature Departure (F)High Temperature Departure (F)
Precipitation Percent of Average   

Monthly 2009 Statewide Maps -
Courtesy of Midwestern Regional Climate Center

  • Precipitation (inches) - and departures from 1971-2000 Normals
    MonthJanFebMarAprMayJunJulAugSepOctNovDec
    ActualAAAAAA A A A A A A
    DepartureDDDDDD D D D D D D

  • Mean Temperature (F) - and departures from 1971-2000 Normals
    MonthJanFebMarAprMayJunJulAugSepOctNovDec
    ActualAAAAAA A A A A A A
    DepartureDDDDDD D D D D D D

  • Snowfall (inches) - and departures from 1971-2000 Normals
    MonthJanFebMarAprMayJunJulAugSepOctNovDec
    ActualAAAAAA AAAA A A
    DepartureDDDDDD DDDD D D

  •  See archive of statewide monthly precipitation, temperature and snowfall maps for previous years (2001-2008)

Last 12 Months Averages

The data for these products come from the U.S. Cooperative Network, augmented by observations from NWS and FAA sites. These cooperative sites are operated by volunteer observers using approved instruments and observing techniques. Their efforts that provide sufficient data to generate these products are greatly appreciated.

  • Divisional Monthly Averages for Last 12 Months
    • Temperature (and departure from 1971-2000 normals)
      Division NW  NC  NE  WC  C  EC  SW  SC  SE 
      ActualAAAA AAAAA
      DepartureDDDD DDDDD
    • Precipitation (and departure from 1971-2000 normals)
      Division NW  NC  NE  WC  C  EC  SW  SC  SE 
      ActualAAAA AAAAA
      DepartureDDDD DDDDD

  • Divisional and Statewide Precipitation Data for Wisconsin
    updated daily  (Courtesy of Oklahoma Climatological Survey)
     

  • See archive of statewide data  for previous years (2001-2008)

Outside Wisconsin

Forecasts & Outlooks