According to the Köppen Climate Classification system, Mildred has a cold semi-arid climate, abbreviated "BSk" on climate maps. The hottest temperature recorded in Mildred was 110 °F (43.3 °C) on July 15, 2002, while the coldest temperature recorded was −46 °F (−43.3 °C) on December 22, 1989.[5]
| Climate data for Mildred, Montana, 1991–2020 normals, extremes 1979–present |
| Month |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Year |
| Record high °F (°C) |
64 (18) |
73 (23) |
83 (28) |
92 (33) |
102 (39) |
109 (43) |
110 (43) |
108 (42) |
105 (41) |
94 (34) |
78 (26) |
66 (19) |
110 (43) |
| Mean maximum °F (°C) |
50.9 (10.5) |
55.0 (12.8) |
70.2 (21.2) |
80.7 (27.1) |
87.0 (30.6) |
94.4 (34.7) |
101.1 (38.4) |
100.4 (38.0) |
95.9 (35.5) |
83.5 (28.6) |
66.8 (19.3) |
52.6 (11.4) |
102.9 (39.4) |
| Mean daily maximum °F (°C) |
28.6 (−1.9) |
33.2 (0.7) |
45.5 (7.5) |
57.3 (14.1) |
67.3 (19.6) |
77.5 (25.3) |
87.2 (30.7) |
86.6 (30.3) |
75.6 (24.2) |
59.1 (15.1) |
43.8 (6.6) |
32.2 (0.1) |
57.8 (14.4) |
| Daily mean °F (°C) |
17.1 (−8.3) |
21.2 (−6.0) |
32.3 (0.2) |
43.3 (6.3) |
53.3 (11.8) |
63.6 (17.6) |
71.4 (21.9) |
69.9 (21.1) |
59.3 (15.2) |
45.1 (7.3) |
31.6 (−0.2) |
20.9 (−6.2) |
44.1 (6.7) |
| Mean daily minimum °F (°C) |
5.6 (−14.7) |
9.3 (−12.6) |
19.1 (−7.2) |
29.3 (−1.5) |
39.4 (4.1) |
49.7 (9.8) |
55.6 (13.1) |
53.2 (11.8) |
43.0 (6.1) |
31.2 (−0.4) |
19.4 (−7.0) |
9.7 (−12.4) |
30.4 (−0.9) |
| Mean minimum °F (°C) |
−22.4 (−30.2) |
−13.8 (−25.4) |
−5.3 (−20.7) |
12.7 (−10.7) |
25.6 (−3.6) |
37.1 (2.8) |
44.1 (6.7) |
39.3 (4.1) |
28.9 (−1.7) |
14.3 (−9.8) |
−3.6 (−19.8) |
−16.8 (−27.1) |
−27.7 (−33.2) |
| Record low °F (°C) |
−43 (−42) |
−38 (−39) |
−32 (−36) |
−8 (−22) |
15 (−9) |
28 (−2) |
34 (1) |
27 (−3) |
13 (−11) |
−10 (−23) |
−28 (−33) |
−46 (−43) |
−46 (−43) |
| Average precipitation inches (mm) |
0.29 (7.4) |
0.33 (8.4) |
0.57 (14) |
1.54 (39) |
2.83 (72) |
2.30 (58) |
2.03 (52) |
1.26 (32) |
1.35 (34) |
1.15 (29) |
0.37 (9.4) |
0.30 (7.6) |
14.32 (362.8) |
| Average precipitation days (≥ 0.01 in) |
3.8 |
3.4 |
4.4 |
5.9 |
8.8 |
7.7 |
6.7 |
4.5 |
4.6 |
4.6 |
3.0 |
3.3 |
60.7 |
| Source 1: NOAA[6] |
| Source 2: National Weather Service[5] |