Lake Nipmuc Association

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Lake Nipmuc, Mendon

Looking forward to another great year on Lake Nipmuc !

Weather station monitoring equipment is located on Lake Nipmuc in Mendon. 

Weather station status...  2015: Rain sensor has been down. January 2011: Wind sensor was down. 3/29/2009: Rain gauge reconnected.  7/4/2008: PC Power supply failure occurred (Replaced 7/5).   6/8/2008: Rain gauge sensor unit replaced / New anemometer with greater accuracy at low wind speeds installed.  Dew/humidity calibration under way (See quality analysis of weather station data performed by MADIS at the following link   1/11/2008: Heated rain gauge problem corrected. 

Click topic/item below in the left margin for detailed weather information.

Current Forecast
Current Radar
24 hour graph
48 hour graph
72 hour graph
Month to date graph
Daily report
NOAA report
Autoscale graphs
Sun / Moon detail
Weather station data
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(Records are based on readings made since January 2003)

Wireless access - For wireless access to the latest Lake Nipmuc weather conditions enter and bookmark the following URL in a web enabled cell phone:

Rapid fire data software courtesy of Weather Underground.

This weather station is located on Lake Nipmuc in Mendon, Massachusetts.

Weather instruments include anemometer, barometer, humidity, rainfall, and temperature (photos). 

This weather station has been in service since January 2003.  

The Citizen Weather Observer Program (CWOP) is a private-public partnership with three main goals: 1) to collect weather data contributed by citizens; 2) to make these data available for weather services and homeland security; and 3) to provide feedback to the data contributors so that they have the tools to check and improve their data quality. In fact, the web address,, stands for weather quality assurance. There are over 6,000 registered CWOP members world wide

CWOP members send their weather data by internet alone and internet-wireless combination to the findU server and then every 15 minutes, the entire data set is sent from the findU server to the NOAA MADIS server. The data are checked for quality and then redistributed to users. There are over 500 different user organizations of mesonet data. Here is a partial list:

  • NWS Weather Forecast Offices
  • National Center for Environmental Prediction
  • National Ocean Service
  • National Center for Atmospheric Research
  • Denver Urban Drainage and Flood Control District
  • Kennedy Space Center
  • NASA Marshall Space Flight Center
  • University Corporation for Atmospheric Research
  • Embry-Riddle Aeronautical University
  • MIT Lincoln Laboratories
  • University of Utah
  • Penn State University
  • Mississippi State University
  • University of Alaska
  • University of North Dakota
  • Hampton University
  • Texas A&M University
  • University of Hawaii
  • Florida State University
  • Weather Underground