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United States Department of Agriculture

Agricultural Research Service

Weather Data from Swan Lake Research Farm

Weather data for these pages is collected at the Swan Lake Research Farm, which is located in the North West corner of Section 35, Swan Lake Township, Stevens County (Approximately 6 miles north and 4 miles east of Morris, MN). 

45o 41' N Latitude and 95o 48' W Longitude.  Elevation 1125 feet.

Terms used are defined below this table.


2014 (recent days)

2014 Weather File

2013 Weather File

2012 Weather File

2011 Weather File

2010 Weather File

2009 Weather File

2008 Weather File

2007 Weather File

2006 Weather File

2005 Weather File

2004 Weather File

2003 Weather File

2002 Weather File

2001 Weather File

2000 Weather File

1999 Weather File

1998 Weather File

Terms used:

Air Temperature
The maximum and minimum air temperatures in degrees Fahrenheit from a shielded thermistor placed 6.56 feet above the ground.

Growing Degree Days
Accumulated degree days above a specified temperature (40, 50, or 50/86). All Growing Degree Days (GDD) are calculated using the formula: {(Tmax + Tmin)/2} - B = Growing Degree Days (GDD) where B represents a base temperature value of 40 or 50 degrees Fahrenheit. For the base 50/86 method, the following adjustments are made: 1) temperatures below 50 degrees F are set at 50 degrees F, and 2) temperatures above 86 degrees F are set at 86 degrees F. The starting date for the GDD calculation is when farmers generally start planting in our area.

Precipitation
Total precipitation in inches measured with a tipping bucket rain gauge.

Relative Humidity
The maximum and minimum relative humidity in percent (%).

Soil Temperatures
Maximum and minimum soil temperatures in degrees Fahrenheit from type T thermocouple under bare soil.

Solar Radiation
Average radiation measured three meters above ground, kilowatt hour per meter squared. Multiply by 24 hours to calculate daily total. The Solar Radiation sensor is often covered with snow during the winter months, so the value may be incorrect during those times.

Wind Speed
Average wind speed at two meter height in miles/hour.


Last Modified: 9/16/2014
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