http://www7.ncdc.noaa.gov/CDO/cdoextremescountryselect.cmd?exdsid=31

• Scroll down to United States and click the gray button
• Scroll down to your state and click the gray button
• Scroll down to your city (check to be sure the date range is correct) and click the gray button
• Scroll down and select Temperature; Extreme Maximum; By Month
• Put the same year in both boxes on the right and click the gray button
• You will find the high temperature for each month in the selected year in your city
• Hit the BACK button
• Change the scroll down menu to Temperature; Extreme Minimum; By Month and click the gray button
• You will find the low temperature for each month in the selected year in your city
• Hit the BACK button
• Change the year in both boxes on the right and click the gray button for data for a new year
• Continue in this way until you have lists of maximum and minimum temperatures for each year.