Frost dates
Frost dates by state
Typical last spring frost and first fall frost for thousands of U.S. weather stations, from NOAA’s 1991–2020 climate normals. Pick a state for every station, town by town, or get the dates for your exact spot in the Field almanac.
- Alabama last Mar 22 · first Nov 9
- Alaska last May 16 · first Sep 22
- Arizona last Mar 31 · first Nov 12
- Arkansas last Mar 27 · first Nov 6
- California last Feb 27 · first Nov 29
- Colorado last May 11 · first Oct 4
- Connecticut last Apr 25 · first Oct 17
- Delaware last Apr 7 · first Nov 4
- Florida last Mar 1 · first Nov 30
- Georgia last Mar 21 · first Nov 12
- Idaho last May 16 · first Sep 29
- Illinois last Apr 18 · first Oct 21
- Indiana last Apr 21 · first Oct 21
- Iowa last Apr 28 · first Oct 10
- Kansas last Apr 19 · first Oct 20
- Kentucky last Apr 15 · first Oct 25
- Louisiana last Mar 2 · first Nov 24
- Maine last May 8 · first Oct 2
- Maryland last Apr 8 · first Nov 2
- Massachusetts last Apr 27 · first Oct 14
- Michigan last May 8 · first Oct 11
- Minnesota last May 5 · first Oct 2
- Mississippi last Mar 17 · first Nov 12
- Missouri last Apr 12 · first Oct 24
- Montana last May 20 · first Sep 21
- Nebraska last May 2 · first Oct 7
- Nevada last May 12 · first Oct 4
- New Hampshire last May 8 · first Oct 4
- New Jersey last Apr 16 · first Oct 27
- New Mexico last Apr 29 · first Oct 17
- New York last May 4 · first Oct 12
- North Carolina last Apr 1 · first Nov 4
- North Dakota last May 13 · first Sep 27
- Ohio last Apr 24 · first Oct 22
- Oklahoma last Apr 5 · first Nov 1
- Oregon last Apr 22 · first Oct 22
- Pennsylvania last Apr 28 · first Oct 19
- Rhode Island last Apr 22 · first Oct 20
- South Carolina last Mar 26 · first Nov 9
- South Dakota last May 8 · first Oct 1
- Tennessee last Apr 7 · first Oct 29
- Texas last Mar 15 · first Nov 15
- Utah last May 11 · first Oct 5
- Vermont last May 13 · first Oct 1
- Virginia last Apr 14 · first Oct 28
- Washington last Apr 22 · first Oct 20
- West Virginia last Apr 26 · first Oct 20
- Wisconsin last May 5 · first Oct 6
- Wyoming last May 20 · first Sep 24
Dates after each state are the middle of its stations; mountains and valleys vary widely.