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