YEAR 2025 - GROWING DEGREE DAYS JANUARY THROUGH OCTOBER
CALCULATED AT BASE 50, BASE 40, AND BASE 32
January
Temperatures |
Growing Degree Days |
Day |
MAX |
MIN |
Base 50 |
Base 40 |
Base 32 |
1 |
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2 |
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3 |
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4 |
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5 |
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6 |
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7 |
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8 |
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9 |
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10 |
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11 |
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12 |
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13 |
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14 |
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15 |
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16 |
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17 |
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18 |
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19 |
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20 |
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21 |
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22 |
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23 |
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24 |
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25 |
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26 |
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27 |
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|
28 |
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|
29 |
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30 |
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31 |
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|
AV MAX |
AV MIN |
Total Base 50 |
Total Base 40 |
Total Base 32 |
|
|
|
|
|
|
February
Temperatures |
Growing Degree Days |
Day |
MAX |
MIN |
Base 50 |
Base 40 |
Base 32 |
1 |
|
|
|
|
|
2 |
|
|
|
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|
3 |
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4 |
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5 |
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6 |
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7 |
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8 |
|
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|
|
|
9 |
|
|
|
|
|
10 |
|
|
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|
|
11 |
|
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|
12 |
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13 |
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14 |
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15 |
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16 |
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17 |
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18 |
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19 |
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20 |
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21 |
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|
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22 |
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23 |
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|
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|
|
24 |
|
|
|
|
|
25 |
|
|
|
|
|
26 |
|
|
|
|
|
27 |
|
|
|
|
|
28 |
|
|
|
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|
29 |
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|
|
|
|
|
AV MAX |
AV MIN |
Total Base 50 |
Total Base 40 |
Total Base 32 |
|
34.1 |
21.1 |
0 |
6.5 |
54.5 |
March
Temperatures |
Growing Degree Days |
Day |
MAX |
MIN |
Base 50 |
Base 40 |
Base 32 |
1 |
49 |
28 |
0 |
4.5 |
8.5 |
2 |
39 |
26 |
0 |
0.0 |
3.5 |
3 |
33 |
15 |
0 |
0.0 |
0.5 |
4 |
37 |
20 |
0 |
0.0 |
2.5 |
5 |
34 |
25 |
0 |
0.0 |
1.0 |
6 |
37 |
16 |
0 |
0.0 |
2.5 |
7 |
38 |
13 |
0 |
0.0 |
3.0 |
8 |
38 |
13 |
0 |
0.0 |
3.0 |
9 |
42 |
19 |
0 |
1.0 |
5.0 |
10 |
49 |
34 |
0 |
4.5 |
9.5 |
11 |
43 |
34 |
0 |
1.5 |
6.5 |
12 |
46 |
35 |
0 |
3.0 |
8.5 |
13 |
49 |
32 |
0 |
4.5 |
8.5 |
14 |
44 |
26 |
0 |
2.0 |
6.0 |
15 |
47 |
24 |
0 |
3.5 |
7.5 |
16 |
53 |
25 |
1.5 |
6.5 |
10.5 |
17 |
60 |
27 |
5.0 |
10.0 |
14.0 |
18 |
61 |
27 |
5.5 |
10.5 |
14.5 |
19 |
65 |
28 |
7.5 |
12.5 |
16.5 |
20 |
66 |
28 |
8.0 |
13.0 |
17.0 |
21 |
64 |
33 |
7.0 |
12.0 |
16.5 |
22 |
52 |
29 |
1.0 |
6.0 |
10.0 |
23 |
46 |
23 |
0.0 |
3.0 |
7.0 |
24 |
38 |
18 |
0.0 |
0.0 |
3.0 |
25 |
33 |
17 |
0.0 |
0.0 |
0.5 |
26 |
36 |
19 |
0.0 |
0.0 |
2.0 |
27 |
44 |
30 |
0.0 |
2.0 |
6.0 |
28 |
48 |
35 |
0.0 |
4.0 |
9.5 |
29 |
47 |
33 |
0.0 |
3.5 |
8.0 |
30 |
44 |
27 |
0.0 |
2.0 |
6.0 |
31 |
47 |
27 |
0.0 |
3.5 |
7.5 |
|
|
|
|
|
|
|
AV MAX |
AVMIN |
Total Base 50 |
Total Base 40 |
Total Base 32 |
|
46.1 |
25.4 |
35.5 |
113 |
224.5 |
April
Temperatures |
Growing Degree Days |
Day |
MAX |
MIN |
Base 50 |
Base 40 |
Base 32 |
1 |
53 |
28 |
1.5 |
6.5 |
10.5 |
2 |
60 |
28 |
5.0 |
10.0 |
14.0 |
3 |
66 |
36 |
8.0 |
13.0 |
19.0 |
4 |
55 |
39 |
2.5 |
7.5 |
15.0 |
5 |
55 |
34 |
2.5 |
7.5 |
12.5 |
6 |
55 |
34 |
2.5 |
7.5 |
12.5 |
7 |
41 |
33 |
0.0 |
0.5 |
5.0 |
8 |
43 |
32 |
0.0 |
1.5 |
5.5 |
9 |
46 |
34 |
0.0 |
3.0 |
8.0 |
10 |
56 |
28 |
3.0 |
8.0 |
12.0 |
11 |
54 |
29 |
2.0 |
7.0 |
11.0 |
12 |
61 |
31 |
5.5 |
10.5 |
14.5 |
13 |
62 |
45 |
6.0 |
13.5 |
21.5 |
14 |
70 |
35 |
10.0 |
15.0 |
20.5 |
15 |
74 |
44 |
12.0 |
19.0 |
27.0 |
16 |
62 |
41 |
6.0 |
11.5 |
19.5 |
17 |
51 |
29 |
.5 |
5.5 |
9.5 |
18 |
47 |
31 |
0.0 |
3.5 |
7.5 |
19 |
45 |
24 |
0.0 |
2.5 |
6.5 |
20 |
46 |
20 |
0.0 |
3.0 |
7.0 |
21 |
55 |
30 |
2.5 |
7.5 |
11.5 |
22 |
54 |
28 |
2.0 |
7.0 |
11.0 |
23 |
57 |
24 |
3.5 |
8.5 |
12.5 |
24 |
64 |
28 |
7.0 |
12.0 |
16.0 |
25 |
68 |
42 |
9.0 |
15.0 |
23.0 |
26 |
62 |
40 |
6.0 |
11.0 |
19.0 |
27 |
58 |
40 |
4.0 |
9.0 |
17.0 |
28 |
55 |
41 |
2.5 |
8.0 |
16.0 |
29 |
54 |
40 |
2.0 |
7.0 |
15.0 |
30 |
48 |
32 |
0.0 |
4.0 |
8.0 |
|
|
|
|
|
|
|
AV MAX |
AV MIN |
Total Base 50 |
Total Base 40 |
Total Base 32 |
|
55.9 |
33.3 |
105.5 |
245 |
407.5 |
May
Temperatures |
Growing Degree Days |
Day |
MAX |
MIN |
Base 50 |
Base 40 |
Base 32 |
1 |
49 |
34 |
0.0 |
4.5 |
9.5 |
2 |
39 |
34 |
0.0 |
0.0 |
4.5 |
3 |
50 |
28 |
0.0 |
5.0 |
9.0 |
4 |
56 |
27 |
3.0 |
8.0 |
12.0 |
5 |
66 |
34 |
8.0 |
13.0 |
18.0 |
6 |
63 |
40 |
6.5 |
11.5 |
19.5 |
7 |
53 |
40 |
1.5 |
6.5 |
14.5 |
8 |
48 |
38 |
0.0 |
4.0 |
11.0 |
9 |
59 |
39 |
4.5 |
9.5 |
17.0 |
10 |
66 |
37 |
8.0 |
13.0 |
19.5 |
11 |
72 |
40 |
11.0 |
16.0 |
24.0 |
12 |
77 |
43 |
13.5 |
20.0 |
28.0 |
13 |
79 |
46 |
14.5 |
22.5 |
30.5 |
14 |
74 |
48 |
12.0 |
21.0 |
29.0 |
15 |
67 |
40 |
8.5 |
13.5 |
21.5 |
16 |
72 |
47 |
11.0 |
19.5 |
27.5 |
17 |
73 |
45 |
11.5 |
19.0 |
27.0 |
18 |
52 |
33 |
1.0 |
6.0 |
10.5 |
19 |
55 |
29 |
2.5 |
7.5 |
11.5 |
20 |
51 |
38 |
0.5 |
5.5 |
12.5 |
21 |
56 |
40 |
3.0 |
8.0 |
16.0 |
22 |
60 |
43 |
5.0 |
11.5 |
19.5 |
23 |
50 |
35 |
0.0 |
5.0 |
10.5 |
24 |
66 |
42 |
8.0 |
14.0 |
22.0 |
25 |
56 |
41 |
3.0 |
8.5 |
16.5 |
26 |
55 |
43 |
2.5 |
9.0 |
17.0 |
27 |
60 |
43 |
5.0 |
11.5 |
19.5 |
28 |
68 |
39 |
9.0 |
14.0 |
21.5 |
29 |
77 |
50 |
13.5 |
23.5 |
31.5 |
30 |
59 |
41 |
4.5 |
10.0 |
18.0 |
31 |
60 |
33 |
5.0 |
10.0 |
14.5 |
|
|
|
|
|
|
|
AV MAX |
AV MIN |
Total Base 50 |
Total Base 40 |
Total Base 32 |
|
60.9 |
39.0 |
176.0 |
350.5 |
563.0 |
June
Temperatures |
Growing Degree Days |
Day |
MAX |
MIN |
Base 50 |
Base 40 |
Base 32 |
1 |
66 |
37 |
8.0 |
13.0 |
19.5 |
2 |
67 |
43 |
8.5 |
15.0 |
23.0 |
3 |
61 |
49 |
5.5 |
15.0 |
23.0 |
4 |
58 |
42 |
4.0 |
10.0 |
18.0 |
5 |
56 |
44 |
3.0 |
10.0 |
18.0 |
6 |
68 |
38 |
9.0 |
14.0 |
21.0 |
7 |
76 |
43 |
13.0 |
19.5 |
27.5 |
8 |
80 |
41 |
15.0 |
20.5 |
28.5 |
9 |
77 |
45 |
13.5 |
21.0 |
29.0 |
10 |
76 |
54 |
15.0 |
25.0 |
33.0 |
11 |
76 |
50 |
11.0 |
23.0 |
31.0 |
12 |
80 |
48 |
13.0 |
24.0 |
32.0 |
13 |
72 |
39 |
14.0 |
16.0 |
23.5 |
14 |
76 |
46 |
13.0 |
21.0 |
29.0 |
15 |
78 |
41 |
14.0 |
19.5 |
27.5 |
16 |
56 |
40 |
3.0 |
8.0 |
16.0 |
17 |
59 |
39 |
4.5 |
9.5 |
17.0 |
18 |
52 |
43 |
1.0 |
7.5 |
15.5 |
19 |
51 |
40 |
0.5 |
5.5 |
13.5 |
20 |
65 |
36 |
7.5 |
12.5 |
18.5 |
21 |
76 |
47 |
13.0 |
21.5 |
29.5 |
22 |
80 |
43 |
15.0 |
21.5 |
29.5 |
23 |
81 |
54 |
17.5 |
27.5 |
35.5 |
24 |
81 |
46 |
15.5 |
23.5 |
31.5 |
25 |
78 |
40 |
14.0 |
19.0 |
27.0 |
26 |
80 |
46 |
15.0 |
23.0 |
31.0 |
27 |
76 |
51 |
13.5 |
23.5 |
31.5 |
28 |
63 |
51 |
7.0 |
17.0 |
25.0 |
29 |
70 |
46 |
10.0 |
18.0 |
26.0 |
30 |
76 |
54 |
15.0 |
25.0 |
33.0 |
|
|
|
|
|
|
|
AV MAX |
AV MIN |
Total Base 50 |
Total Base 40 |
Total Base 32 |
|
|
|
|
|
|
July
Temperatures |
Growing Degree Days |
Day |
MAX |
MIN |
Base 50 |
Base 40 |
Base 32 |
1 |
68 |
49 |
9.0 |
18.5 |
26.5 |
2 |
69 |
48 |
9.5 |
18.5 |
26.5 |
3 |
71 |
52 |
11.5 |
21.5 |
29.5 |
4 |
67 |
49 |
8.5 |
18.0 |
26.0 |
5 |
76 |
47 |
13.0 |
21.5 |
29.5 |
6 |
81 |
55 |
18.0 |
28.0 |
36.0 |
7 |
81 |
51 |
16.0 |
26.0 |
34.0 |
8 |
84 |
51 |
17.5 |
27.5 |
35.5 |
9 |
89 |
53 |
19.5 |
29.5 |
37.5 |
10 |
94 |
53 |
19.5 |
29.5 |
37.5 |
11 |
93 |
55 |
20.5 |
30.5 |
38.5 |
12 |
93 |
51 |
18.5 |
28.5 |
36.5 |
13 |
89 |
53 |
19.5 |
29.5 |
37.5 |
14 |
89 |
53 |
19.5 |
29.5 |
37.5 |
15 |
93 |
52 |
19.0 |
29.0 |
37.0 |
16 |
91 |
52 |
19.0 |
29.0 |
37.0 |
17 |
89 |
50 |
18.0 |
28.0 |
36.0 |
18 |
92 |
60 |
23.0 |
33.0 |
41.0 |
19 |
90 |
55 |
20.5 |
30.5 |
38.5 |
20 |
91 |
55 |
20.5 |
30.5 |
38.5 |
21 |
96 |
57 |
21.5 |
31.5 |
39.5 |
22 |
96 |
57 |
21.5 |
31.5 |
39.5 |
23 |
94 |
58 |
22.0 |
32.0 |
40.0 |
24 |
93 |
50 |
18.0 |
28.0 |
36.0 |
25 |
95 |
56 |
21.0 |
31.0 |
39.0 |
26 |
80 |
43 |
15.0 |
21.5 |
29.5 |
27 |
79 |
44 |
14.5 |
21.5 |
29.5 |
28 |
79 |
47 |
14.5 |
23.0 |
31.0 |
29 |
80 |
46 |
15.0 |
23.0 |
31.0 |
30 |
84 |
58 |
21.0 |
31.0 |
39.0 |
31 |
68 |
55 |
11.5 |
21.5 |
29.5 |
|
|
|
|
|
|
|
AV MAX |
AV MIN |
Total Base 50 |
Total Base 40 |
Total Base 32 |
|
85 |
52.1 |
524 |
810.5 |
1050.5 |
August
Temperatures |
Growing Degree Days |
Day |
MAX |
MIN |
Base 50 |
Base 40 |
Base 32 |
1 |
83 |
50 |
16.5 |
26.5 |
34.5 |
2 |
90 |
53 |
21.5 |
29.5 |
37.5 |
3 |
94 |
54 |
24.0 |
30.0 |
38.0 |
4 |
84 |
64 |
24.0 |
34.0 |
42.0 |
5 |
66 |
57 |
11.5 |
21.5 |
29.5 |
6 |
75 |
52 |
13.5 |
23.5 |
31.5 |
7 |
82 |
56 |
19.0 |
29.0 |
37.0 |
8 |
75 |
47 |
12.5 |
21.0 |
29.0 |
9 |
76 |
46 |
13.0 |
21.0 |
29.0 |
10 |
82 |
50 |
16.0 |
26.0 |
34.0 |
11 |
83 |
47 |
16.5 |
25.0 |
33.0 |
12 |
79 |
51 |
15.0 |
25.0 |
33.0 |
13 |
79 |
51 |
15.0 |
25.0 |
33.0 |
14 |
79 |
50 |
14.5 |
24.5 |
32.5 |
15 |
81 |
51 |
16.0 |
26.0 |
34.0 |
16 |
88 |
53 |
20.5 |
29.5 |
37.5 |
17 |
69 |
46 |
9.5 |
17.5 |
25.5 |
18 |
83 |
50 |
16.5 |
26.5 |
34.5 |
19 |
89 |
55 |
22.0 |
30.5 |
38.5 |
20 |
89 |
52 |
20.5 |
29.0 |
37.0 |
21 |
82 |
55 |
18.5 |
28.5 |
36.5 |
22 |
74 |
41 |
12.0 |
17.5 |
25.5 |
23 |
84 |
49 |
17.0 |
26.5 |
34.5 |
24 |
89 |
45 |
19.5 |
25.5 |
33.5 |
25 |
72 |
48 |
11.0 |
20.0 |
28.0 |
26 |
64 |
38 |
7.0 |
12.0 |
19.0 |
27 |
77 |
41 |
13.5 |
19.0 |
27.0 |
28 |
81 |
44 |
15.5 |
22.5 |
30.5 |
29 |
49 |
40 |
0.0 |
4.5 |
12.5 |
30 |
70 |
41 |
10.0 |
15.5 |
23.5 |
31 |
81 |
43 |
15.5 |
22.0 |
30.0 |
|
|
|
|
|
|
|
AV MAX |
AV MIN |
Total Base 50 |
Total Base 40 |
Total Base 32 |
|
79 |
49.0 |
461.5 |
712.0 |
951.0 |
September
Temperatures |
Growing Degree Days |
Day |
MAX |
MIN |
Base 50 |
Base 40 |
Base 32 |
1 |
88 |
|
|
|
|
2 |
82 |
|
|
|
|
3 |
82 |
|
|
|
|
4 |
83 |
|
|
|
|
5 |
|
|
|
|
|
6 |
|
|
|
|
|
7 |
|
|
|
|
|
8 |
|
|
|
|
|
9 |
|
|
|
|
|
10 |
|
|
|
|
|
11 |
|
|
|
|
|
12 |
|
|
|
|
|
13 |
|
|
|
|
|
14 |
|
|
|
|
|
15 |
|
|
|
|
|
16 |
|
|
|
|
|
17 |
|
|
|
|
|
18 |
|
|
|
|
|
19 |
|
|
|
|
|
20 |
|
|
|
|
|
21 |
|
|
|
|
|
22 |
|
|
|
|
|
23 |
|
|
|
|
|
24 |
|
|
|
|
|
25 |
|
|
|
|
|
26 |
|
|
|
|
|
27 |
|
|
|
|
|
28 |
|
|
|
|
|
29 |
|
|
|
|
|
30 |
|
|
|
|
|
|
|
|
|
|
|
|
AV MAX |
AV MIN |
Total Base 50 |
Total Base 40 |
Total Base 32 |
|
|
|
|
|
|
October
Temperatures |
Growing Degree Days |
Day |
MAX |
MIN |
Base 50 |
Base 40 |
Base 32 |
1 |
|
|
|
|
|
2 |
|
|
|
|
|
3 |
|
|
|
|
|
4 |
|
|
|
|
|
5 |
|
|
|
|
|
6 |
|
|
|
|
|
7 |
|
|
|
|
|
8 |
|
|
|
|
|
9 |
|
|
|
|
|
10 |
|
|
|
|
|
11 |
|
|
|
|
|
12 |
|
|
|
|
|
13 |
|
|
|
|
|
14 |
|
|
|
|
|
15 |
|
|
|
|
|
16 |
|
|
|
|
|
17 |
|
|
|
|
|
18 |
|
|
|
|
|
19 |
|
|
|
|
|
20 |
|
|
|
|
|
21 |
|
|
|
|
|
22 |
|
|
|
|
|
23 |
|
|
|
|
|
24 |
|
|
|
|
|
25 |
|
|
|
|
|
26 |
|
|
|
|
|
27 |
|
|
|
|
|
28 |
|
|
|
|
|
29 |
|
|
|
|
|
30 |
|
|
|
|
|
31 |
|
|
|
|
|
|
|
|
|
|
|
|
AV MAX |
AV MIN |
Total Base 50 |
Total Base 40 |
Total Base 32 |
|
|
|
|
|
|
Northwestern Ag Research Center
4570 Montana Hwy 35
Kalispell, MT 59901
Tel: (406) 994-4312
Superintendent
Jessica A. Torrion
406-994-4304
jessica.torrion@montana.edu
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