First & Last Frost Dates of New Hampshire Cities and Towns

  • SheelaBy
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New Hampshire’s weather changes a lot from place to place, which affects when plants can grow there. Some places like Laconia can grow plants for 178 days, while others like Littleton only have 125 days. This makes a big difference for anyone growing plants in the state.

Big cities like Manchester, Nashua, and Concord usually have more time to grow plants. But towns high up in the mountains, like Plymouth and Bethlehem, have less time because frost comes earlier in fall and stays later in spring, sometimes until May.

This guide helps gardeners and farmers know when frost happens in different New Hampshire cities and towns, showing the closest weather stations so they can plan when to plant and harvest.

New Hampshire Frost Dates Map

Type or Select your New Hampshire location in the selection box below, to find its frost dates.

New Hampshire Frost Dates Map

City Name

New Hampshire Frost Dates

Spring Last Frost
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—
Fall First Frost
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—
The nearest weather station to your location is — and is located at a distance of —.
These dates are based on NOAA Data with 30% probability derived from “U.S. Climate Normals 2020: U.S. Annual/Seasonal Climate Normals (1991-2020)”. This means there is a 30% chance that the first fall frost may occur before the shown date, and the last spring frost may occur after the shown date.

First & Last Frost Dates of New Hampshire Cities and Towns

These New Hampshire frost dates come from NCEI.gov’s weather records from 1991-2020. The dates show when there’s a 30% chance of frost happening.

The “Last Spring Frost Date” tells you when it’s usually safe to plant outside, though there’s still a small chance (30%) of frost coming.

The “First Fall Frost Date” tells you when frost usually starts in fall, but it might come a bit earlier (30% chance). Think of these dates as helpful hints, not sure things.

City Station ID Distance (mi) Fall First Frost Spring Last Frost Growing Season (Days)
Manchester USC00275211 3.14 10/06 05/04 171.0
Nashua USC00275712 1.83 10/05 05/04 173.0
Concord USW00014745 2.04 09/29 05/15 153.0
Derry USC00279278 6.50 10/05 05/05 170.0
Rochester USW00054791 3.25 10/04 05/05 170.0
Dover USW00054794 3.27 10/04 05/08 164.0
Salem USC00279278 8.45 10/05 05/05 170.0
Merrimack USW00014710 5.35 10/13 04/27 187.0
Londonderry USC00274234 5.14 10/02 05/08 163.0
Hudson USC00274234 1.80 10/02 05/08 163.0
Bedford USW00014710 3.90 10/13 04/27 187.0
Keene USC00274399 2.38 09/26 05/19 145.0
Portsmouth USC00273626 4.74 10/04 05/10 163.0
Goffstown USC00278972 8.27 10/03 05/06 165.0
Laconia USC00274480 1.51 10/12 05/04 178.0
Hampton USC00273626 5.81 10/04 05/10 163.0
Milford USC00275412 0.28 10/01 05/07 163.0
Exeter USC00273626 6.68 10/04 05/10 163.0
Windham USC00274234 5.73 10/02 05/08 163.0
Lebanon USW00094765 2.87 10/01 05/16 155.0
Hooksett USC00275211 4.51 10/06 05/04 171.0
Durham USC00272174 1.35 10/01 05/14 155.0
Pelham USC00274234 5.68 10/02 05/08 163.0
Claremont USC00275868 7.88 09/27 05/20 148.0
Hanover USC00273850 0.29 10/07 05/06 171.0
Somersworth USW00054791 3.08 10/04 05/05 170.0
Amherst USC00275412 1.93 10/01 05/07 163.0
Raymond USC00272800 5.04 09/30 05/14 155.0
Conway USC00275995 5.37 10/01 05/13 156.0
Barrington USW00054794 6.97 10/04 05/08 164.0
Newmarket USW00054795 2.25 10/01 05/13 157.0
Berlin USC00270690 1.04 09/23 05/20 144.0
Weare USC00278972 0.80 10/03 05/06 165.0
Hampstead USC00279278 2.72 10/05 05/05 170.0
Franklin USC00273182 1.83 09/30 05/13 154.0
Hollis USC00275703 5.57 10/04 05/03 169.0
Litchfield USC00275712 3.67 10/05 05/04 173.0
Seabrook USC00273626 9.22 10/04 05/10 163.0
Bow USW00014745 5.00 09/29 05/15 153.0
Gilford USC00274480 2.89 10/12 05/04 178.0
Plaistow USC00279278 7.47 10/05 05/05 170.0
Stratham USC00273626 4.58 10/04 05/10 163.0
Epping USC00272800 1.69 09/30 05/14 155.0
Pembroke USW00014745 3.14 09/29 05/15 153.0
Swanzey USC00274399 5.03 09/26 05/19 145.0
Belmont USC00274480 7.26 10/12 05/04 178.0
Atkinson USC00279278 5.72 10/05 05/05 170.0
Farmington USW00054791 10.36 10/04 05/05 170.0
Meredith USC00275350 2.76 10/10 05/02 179.0
Sandown USC00279278 1.45 10/05 05/05 170.0
Plymouth USC00276945 2.62 09/21 05/26 136.0
Wolfeboro USC00274480 13.01 10/12 05/04 178.0
Rindge USW00054770 3.73 10/01 05/11 160.0
Peterborough USC00274304 5.06 10/01 05/10 162.0
Newport USC00275868 0.93 09/27 05/20 148.0
Kingston USC00272800 6.67 09/30 05/14 155.0
Henniker USC00274218 3.89 09/28 05/12 153.0
New Boston USC00278972 7.83 10/03 05/06 165.0
Auburn USC00275211 2.50 10/06 05/04 171.0
Hopkinton USC00274218 2.80 09/28 05/12 153.0
Alton USC00274480 13.94 10/12 05/04 178.0
Littleton USC00270706 5.58 09/13 05/31 125.0
Hillsborough USC00278973 7.04 10/01 05/15 155.0
Brookline USC00272302 6.56 10/03 05/03 168.0
Loudon USW00014745 6.47 09/29 05/15 153.0
Rye USC00273626 3.14 10/04 05/10 163.0
Jaffrey USC00274304 0.94 10/01 05/10 162.0
Wakefield USW00054791 19.79 10/04 05/05 170.0
Nottingham USC00272800 5.88 09/30 05/14 155.0
New Ipswich USC00273658 5.27 10/01 05/17 156.0
Chester USC00279278 4.24 10/05 05/05 170.0
Moultonborough USC00272303 4.65 10/01 05/11 158.0
Barnstead USW00014745 14.98 09/29 05/15 153.0
Northfield USC00273182 4.01 09/30 05/13 154.0
Epsom USW00014745 8.15 09/29 05/15 153.0
Deerfield USC00272800 10.61 09/30 05/14 155.0
Charlestown USC00278856 13.61 09/30 05/14 158.0
Fremont USC00272800 4.02 09/30 05/14 155.0
Newton USC00279278 8.94 10/05 05/05 170.0
Allenstown USW00014745 5.50 09/29 05/15 153.0
Northwood USC00272174 10.72 10/01 05/14 155.0
Brentwood USC00272800 3.65 09/30 05/14 155.0
Haverhill USC00270681 5.73 09/23 05/22 141.0
Lee USW00054795 3.34 10/01 05/13 157.0
Danville USC00279278 3.92 10/05 05/05 170.0
Ossipee USC00272303 14.19 10/01 05/11 158.0
Milton USW00054791 12.28 10/04 05/05 170.0
North Hampton USC00273626 3.31 10/04 05/10 163.0
Enfield USW00094765 8.10 10/01 05/16 155.0
New London USC00275629 8.43 10/03 05/07 165.0
Strafford USW00054791 13.61 10/04 05/05 170.0
Winchester USC00274399 11.81 09/26 05/19 145.0
Candia USC00275211 7.26 10/06 05/04 171.0
Pittsfield USW00014745 11.73 09/29 05/15 153.0
Tilton USC00273182 3.75 09/30 05/13 154.0
Greenland USC00273626 1.10 10/04 05/10 163.0
Gilmanton USC00274480 8.96 10/12 05/04 178.0
Boscawen USC00277833 5.42 09/23 05/20 145.0
Hinsdale USC00274399 13.36 09/26 05/19 145.0
Wilton USC00275412 4.57 10/01 05/07 163.0
Canaan USC00273530 9.40 09/20 05/28 134.0
Walpole USC00278856 3.19 09/30 05/14 158.0
Chesterfield USC00274399 6.78 09/26 05/19 145.0
Grantham USC00275868 10.14 09/27 05/20 148.0
Sunapee USC00275629 3.83 10/03 05/07 165.0
Campton USC00276945 2.72 09/21 05/26 136.0
Bartlett USC00275995 5.34 10/01 05/13 156.0
Bristol USC00273182 9.33 09/30 05/13 154.0
Lancaster USC00274556 0.69 09/25 05/24 139.0
Dunbarton USC00278972 6.27 10/03 05/06 165.0
Sanbornton USC00273182 3.82 09/30 05/13 154.0
Warner USC00274218 6.37 09/28 05/12 153.0
Tamworth USC00278614 0.36 09/19 05/23 137.0
Thornton USC00276945 7.68 09/21 05/26 136.0
New Durham USC00274480 16.58 10/12 05/04 178.0
Chichester USW00014745 6.32 09/29 05/15 153.0
Madison USC00278614 6.35 09/19 05/23 137.0
Antrim USC00278973 10.31 10/01 05/15 155.0
Gorham USC00273488 1.14 09/19 05/20 138.0
Mont Vernon USC00275412 4.03 10/01 05/07 163.0
Rollinsford USW00054791 5.89 10/04 05/05 170.0
Tuftonboro USC00272303 9.90 10/01 05/11 158.0
Bethlehem USC00270706 2.33 09/13 05/31 125.0
Plainfield USW00094765 5.80 10/01 05/16 155.0
Whitefield USW00054728 3.31 09/14 06/02 124.0
Canterbury USC00277833 8.68 09/23 05/20 145.0
Fitzwilliam USC00274304 7.19 10/01 05/10 162.0
East Kingston USC00272800 8.02 09/30 05/14 155.0
Andover USC00277833 7.19 09/23 05/20 145.0
New Hampton USC00275350 9.21 10/10 05/02 179.0
Hampton Falls USC00273626 7.50 10/04 05/10 163.0
Newbury USC00275629 2.31 10/03 05/07 165.0
Troy USC00274304 8.85 10/01 05/10 162.0
Marlborough USC00274399 6.38 09/26 05/19 145.0
Northumberland USC00276234 6.87 09/23 05/24 139.0
Colebrook USC00276234 15.32 09/23 05/24 139.0
Kensington USC00273626 8.83 10/04 05/10 163.0
Sutton USC00270913 5.80 09/22 05/21 143.0
Holderness USC00276945 4.69 09/21 05/26 136.0
Greenville USC00273658 1.28 10/01 05/17 156.0
Webster USC00277833 1.99 09/23 05/20 145.0
Ashland USC00276945 6.16 09/21 05/26 136.0
Madbury USW00054794 0.26 10/04 05/08 164.0
Deering USC00278973 4.75 10/01 05/15 155.0
Alstead USC00278856 8.78 09/30 05/14 158.0
Middleton USW00054791 15.71 10/04 05/05 170.0
Effingham USC00278614 15.44 09/19 05/23 137.0
Newfields USW00054795 5.15 10/01 05/13 157.0
Alexandria USC00273530 8.45 09/20 05/28 134.0
Hancock USC00274304 11.43 10/01 05/10 162.0
Lyme USC00273850 9.68 10/07 05/06 171.0
Westmoreland USC00278856 4.97 09/30 05/14 158.0
Freedom USC00278614 12.07 09/19 05/23 137.0
Bradford USC00270913 2.34 09/22 05/21 143.0
Lyndeborough USC00275412 7.61 10/01 05/07 163.0
Greenfield USC00278972 11.48 10/03 05/06 165.0
Cornish USC00275868 11.20 09/27 05/20 148.0
Lincoln USC00274734 0.25 09/30 05/11 156.0
Francestown USC00278972 7.69 10/03 05/06 165.0
Lisbon USC00270681 12.52 09/23 05/22 141.0
Dublin USC00274304 7.41 10/01 05/10 162.0
Sandwich USC00272303 3.64 10/01 05/11 158.0
Unity USC00275868 8.53 09/27 05/20 148.0
Bennington USC00278973 10.69 10/01 05/15 155.0
Rumney USC00279091 6.70 10/01 05/18 154.0
Salisbury USC00277833 2.02 09/23 05/20 145.0
Wilmot USC00273530 8.15 09/20 05/28 134.0
Mason USC00273658 3.13 10/01 05/17 156.0
Woodstock USC00274734 4.53 09/30 05/11 156.0
Stoddard USC00270913 13.68 09/22 05/21 143.0
Grafton USC00273530 0.41 09/20 05/28 134.0
Temple USC00273658 3.65 10/01 05/17 156.0
Milan USW00094700 0.37 09/13 06/04 120.0
Springfield USC00273530 6.48 09/20 05/28 134.0
Danbury USC00273530 5.25 09/20 05/28 134.0
Orford USC00279091 11.47 10/01 05/18 154.0
Richmond USC00274399 13.03 09/26 05/19 145.0
Washington USC00270913 7.45 09/22 05/21 143.0
Bridgewater USC00276945 10.91 09/21 05/26 136.0
Lempster USC00275629 8.80 10/03 05/07 165.0
Franconia USC00270706 7.07 09/13 05/31 125.0
Bath USC00270681 9.22 09/23 05/22 141.0
Jackson USC00275995 6.81 10/01 05/13 156.0
Jefferson USC00274329 1.30 09/25 05/14 153.0
Center Harbor USC00275350 1.24 10/10 05/02 179.0
Hill USC00273182 4.60 09/30 05/13 154.0
Harrisville USC00274304 10.48 10/01 05/10 162.0
New Castle USC00273626 6.58 10/04 05/10 163.0
Dalton USC00270706 7.79 09/13 05/31 125.0
South Hampton USC00273626 11.90 10/04 05/10 163.0
Acworth USC00275868 12.35 09/27 05/20 148.0
Monroe USC00270706 17.82 09/13 05/31 125.0
Surry USC00274399 5.46 09/26 05/19 145.0
Wentworth USC00279091 0.35 10/01 05/18 154.0
Croydon USC00275868 5.15 09/27 05/20 148.0
Warren USC00279091 4.07 10/01 05/18 154.0
Pittsburg USC00272999 5.61 09/18 05/31 129.0
Carroll USW00054728 4.83 09/14 06/02 124.0
Newington USC00273626 5.47 10/04 05/10 163.0
Brookfield USC00274480 20.00 10/12 05/04 178.0
Goshen USC00275629 4.08 10/03 05/07 165.0
Gilsum USC00274399 8.19 09/26 05/19 145.0
Albany USC00275995 7.20 10/01 05/13 156.0
Stewartstown USC00272999 12.01 09/18 05/31 129.0
Piermont USC00270681 7.93 09/23 05/22 141.0
Marlow USC00278856 13.19 09/30 05/14 158.0
Sullivan USC00274399 7.34 09/26 05/19 145.0
Sugar Hill USC00270706 9.44 09/13 05/31 125.0
Columbia USC00276234 11.87 09/23 05/24 139.0
Langdon USC00278856 9.60 09/30 05/14 158.0
Nelson USC00274399 10.43 09/26 05/19 145.0
Hebron USC00276945 9.93 09/21 05/26 136.0
Stratford USC00276234 2.34 09/23 05/24 139.0
Lyman USC00270681 14.88 09/23 05/22 141.0
Groton USC00276945 10.89 09/21 05/26 136.0
Waterville Valley USC00278961 0.65 09/22 05/21 140.0
Stark USC00279966 7.93 09/16 05/30 128.0
Landaff USC00270681 10.21 09/23 05/22 141.0
Eaton USC00278614 11.37 09/19 05/23 137.0
Shelburne USC00273488 5.95 09/19 05/20 138.0
Chatham USC00275995 9.53 10/01 05/13 156.0
Sharon USW00054770 4.50 10/01 05/11 160.0
Benton USC00270681 5.32 09/23 05/22 141.0
Dorchester USC00279091 7.78 10/01 05/18 154.0
Randolph USC00273488 4.38 09/19 05/20 138.0
Dummer USW00094700 2.63 09/13 06/04 120.0
Easton USC00274734 9.76 09/30 05/11 156.0
Errol USC00272846 1.46 09/16 05/26 130.0
Clarksville USC00272999 9.87 09/18 05/31 129.0
Orange USC00273530 6.16 09/20 05/28 134.0
Windsor USC00270913 8.13 09/22 05/21 143.0
Roxbury USC00274399 6.11 09/26 05/19 145.0
Ellsworth USC00276945 7.62 09/21 05/26 136.0
Hart’s Location USC00275995 11.30 10/01 05/13 156.0
Millsfield USC00272846 4.64 09/16 05/26 130.0
Cambridge USC00272846 7.43 09/16 05/26 130.0
Dixville USC00272846 8.96 09/16 05/26 130.0
Success USC00270690 5.59 09/23 05/20 144.0

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