Growing Season
in Maryland: January 1 - December 31, 2025


NOTE: Data From preliminary NCEI's nClimDiv-Daily Data set v1.0.0
Data labeled as scaled on January 8, 2026.

RegionDuration of the
Growing Season (days)		Day when
Growing Season*
Starts		Day when
Growing Season*
Ends		Number of Days
in the year with
Minimum Temperature
Above Freezing
Statewide 21411 Apr10 Nov272
Clim. Div. 1 21511 Apr11 Nov285
Clim. Div. 2 24611 Mar11 Nov282
Clim. Div. 3 24611 Mar11 Nov284
Clim. Div. 4 21510 Apr10 Nov281
Clim. Div. 5 21510 Apr10 Nov271
Clim. Div. 6 21011 Apr 6 Nov264
Clim. Div. 7 19118 Apr25 Oct254
Clim. Div. 8 18119 Apr16 Oct232
Allegany 19019 Apr25 Oct251
Anne Arundel 24610 Mar10 Nov285
Baltimore 21011 Apr 6 Nov262
Calvert 24611 Mar11 Nov282
Caroline 21511 Apr11 Nov271
Carroll 21011 Apr 6 Nov258
Cecil 21411 Apr10 Nov272
Charles 22210 Apr17 Nov286
Dorchester 24611 Mar11 Nov284
Frederick 21011 Apr 6 Nov265
Garrett 18119 Apr16 Oct232
Harford 21011 Apr 6 Nov265
Howard 21011 Apr 6 Nov265
Kent 21510 Apr10 Nov272
Montgomery 21110 Apr 6 Nov277
Prince George's21510 Apr10 Nov280
Queen Anne's 21510 Apr10 Nov272
Saint Mary's 24611 Mar11 Nov282
Somerset 24611 Mar11 Nov289
Talbot 24611 Mar11 Nov283
Washington 21011 Apr 6 Nov258
Wicomico 21511 Apr11 Nov282
Worcester 21511 Apr11 Nov285
Baltimore City 21510 Apr10 Nov283

*The Growing Season is defined as the period between the last frost of spring and the first frost of fall,
when Minimum Temperatures are greater than 32°F.