Les huit zones climatiques (H1a, H1b, H1c, H2a, H2b, H2c, H2d et H3) sont définies selon le tableau ci-dessous :

| Département |Zone climatique| |----------------------------|---------------| | 01 ― Ain | H1c | | 02 ― Aisne | H1a | | 03 ― Allier | H1c | |04 ― Alpes-de-Haute-Provence| H2d | | 05 ― Hautes-Alpes | H1c | | 06 ― Alpes-Maritimes | H3 | | 07 ― Ardèche | H2d | | 08 ― Ardennes | H1b | | 09 ― Ariège | H2c | | 10 ― Aube | H1b | | 11 ― Aude | H3 | | 12 ― Aveyron | H2c | | 13 ― Bouches-du-Rhône | H3 | | 14 ― Calvados | H1a | | 15 ― Cantal | H1c | | 16 ― Charente | H2b | | 17 ― Charente-Maritime | H2b | | 18 ― Cher | H2b | | 19 ― Corrèze | H1c | | 2A ― Corse-du-Sud | H3 | | 2B ― Haute-Corse | H3 | | 21 ― Côte-d'Or | H1c | | 22 ― Côtes-d'Armor | H2a | | 23 ― Creuse | H1c | | 24 ― Dordogne | H2c | | 25 ― Doubs | H1c | | 26 ― Drôme | H2d | | 27 ― Eure | H1a | | 28 ― Eure-et-Loir | H1a | | 29 ― Finistère | H2a | | 30 ― Gard | H3 | | 31 ― Haute-Garonne | H2c | | 32 ― Gers | H2c | | 33 ― Gironde | H2c | | 34 ― Hérault | H3 | | 35 ― Ille-et-Vilaine | H2a | | 36 ― Indre | H2b | | 37 ― Indre-et-Loire | H2b | | 38 ― Isère | H1c | | 39 ― Jura | H1c | | 40 ― Landes | H2c | | 41 ― Loir-et-Cher | H2b | | 42 ― Loire | H1c | | 43 ― Haute-Loire | H1c | | 44 ― Loire-Atlantique | H2b | | 45 ― Loiret | H1b | | 46 ― Lot | H2c | | 47 ― Lot-et-Garonne | H2c | | 48 ― Lozère | H2d | | 49 ― Maine-et-Loire | H2b | | 50 ― Manche | H2a | | 51 ― Marne | H1b | | 52 ― Haute-Marne | H1b | | 53 ― Mayenne | H2b | | 54 ― Meurthe-et-Moselle | H1b | | 55 ― Meuse | H1b | | 56 ― Morbihan | H2a | | 57 ― Moselle | H1b | | 58 ― Nièvre | H1b | | 59 ― Nord | H1a | | 60 ― Oise | H1a | | 61 ― Orne | H1a | | 62 ― Pas-de-Calais | H1a | | 63 ― Puy-de Dôme | H1c | | 64 ― Pyrénées-Atlantiques | H2c | | 65 ― Hautes-Pyrénées | H2c | | 66 ― Pyrénées-Orientales | H3 | | 67 ― Bas-Rhin | H1b | | 68 ― Haut-Rhin | H1b | | 69 ― Rhône | H1c | | 70 ― Haute-Saône | H1b | | 71 ― Saône-et-Loire | H1c | | 72 ― Sarthe | H2b | | 73 ― Savoie | H1c | | 74 ― Haute-Savoie | H1c | | 75 ― Paris | H1a | | 76 ― Seine-Maritime | H1a | | 77 ― Seine-et-Marne | H1a | | 78 ― Yvelines | H1a | | 79 ― Deux-Sèvres | H2b | | 80 ― Somme | H1a | | 81 ― Tarn | H2c | | 82 ― Tarn-et-Garonne | H2c | | 83 ― Var | H3 | | 84 ― Vaucluse | H2d | | 85 ― Vendée | H2b | | 86 ― Vienne | H2b | | 87 ― Haute-Vienne | H1c | | 88 ― Vosges | H1b | | 89 ― Yonne | H1b | | 90 ― Territoire de Belfort | H1b | | 91 ― Essonne | H1a | | 92 ― Hauts-de-Seine | H1a | | 93 ― Seine-Saint-Denis | H1a | | 94 ― Val-de-Marne | H1a | | 95 ― Val-d'Oise | H1a |