National Weather Service Weather Forecast Office

Last Update: 1020 AM CDT TUE OCT 21

The areas in  light blue  have seen a freeze already this fall.  The areas in  blue  have seen a frost.

Here is a brief local climatology of frost and freeze dates. 

At Cedar Rapids,

• Coldest temperature so far this fall: 33 F October 21, 18, 16
• Frost information (36F):
  • The average first frost (36F) is September 30th
  • The earliest first frost (36F) is September 12th
  • The latest first frost (36F) is October 28th
• Freeze information (32F):
  • The average first freeze (32F) is October 6th
  • The earliest first freeze (32F) September 19th
  • The latest first freeze (32F) October 30th
• Hard Freeze information (28F):
  • The average first hard freeze (28F) is October 19th
  • The earliest hard freeze (28F) is September 30th
  • The latest hard freeze (28F) is November 7th

At Dubuque,

• Coldest temperature so far this fall: 32 F October 21
• Frost information (36F):
  • The average first frost (36F) is October 1st
  • The earliest first frost (36F) is September 10th
  • The latest first frost (36F) is October 28th
• Freeze information (32F):
  • The average first freeze (32F) is October 7th
  • The earliest first freeze (32F) September 24th
  • The latest first freeze (32F) November 12th
• Hard Freeze information (28F):
  • The average first hard freeze (28F) is October 18th
  • The earliest hard freeze (28F) is October 10th
  • The latest hard freeze (28F) is November 16th

 At Moline,

• Coldest temperature so far this fall: 33 F October 21
• Frost information (36F):
  • The average first frost (36F) is October 2nd
  • The earliest first frost (36F) is September 15th
  • The latest first frost (36F) is October 16th
• Freeze information (32F):
  • The average first freeze (32F) is October 9th
  • The earliest first freeze (32F) is September 19th
  • The latest first freeze (32F) is November 3rd
• Hard Freeze information (28F):
  • The average first hard freeze (28F) is October 23rd
  • The earliest first hard freeze (28F) is October 2nd
  • The latest hard freeze (28F) is November 12th

At Burlington,

• Coldest temperature so far this fall: 39 F October 17, 16, 2 
• Frost information (36F):
  • The average first frost (36F) is October 8th
  • The earliest first frost (36F) is September 15th
  • The latest first frost (36F) is October 28th
• Freeze information (32F):
  • The average first freeze (32F) is October 17th
  • The earliest first freeze (32F) is September 27th
  • The latest first freeze (32F) is November 7th
• Hard Freeze information (28F):
  • The average first hard freeze (28F) is November 1st
  • The earliest first hard freeze (28F) is October 2nd
  • The latest hard freeze (28F) is November 19th

Further Frost/Freeze information:

Earliest and Latest Frost and Freeze information for our area.

Fall and Spring frost/freeze probabilities for locations in Iowa, Illinois, and Missouri.