Bayan-Ovoo has a continental climate (Köppen climate classification Dwb) with warm summers and severely cold winters. Most precipitation falls in the summer as rain, with some snow in autumn and spring. Winters are quite dry, with occasional light snow.
| Climate data for Bayan-Ovoo, elevation 926 m (3,038 ft), (1991–2020 normals, extremes 1962–1990, 1999–2023) |
| Month |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Year |
| Record high °C (°F) |
1.9
(35.4) |
7.9
(46.2) |
22.3
(72.1) |
30.5
(86.9) |
39.7
(103.5) |
40.2
(104.4) |
39.8
(103.6) |
36.4
(97.5) |
34.1
(93.4) |
28.6
(83.5) |
15.6
(60.1) |
3.6
(38.5) |
40.2
(104.4) |
| Mean daily maximum °C (°F) |
−16.0
(3.2) |
−9.8
(14.4) |
1.2
(34.2) |
12.1
(53.8) |
19.9
(67.8) |
25.4
(77.7) |
27.2
(81.0) |
25.5
(77.9) |
19.6
(67.3) |
9.4
(48.9) |
−4.1
(24.6) |
−13.8
(7.2) |
8.1
(46.5) |
| Daily mean °C (°F) |
−21.7
(−7.1) |
−17.1
(1.2) |
−6.9
(19.6) |
4.1
(39.4) |
11.8
(53.2) |
18.1
(64.6) |
20.6
(69.1) |
18.0
(64.4) |
11.6
(52.9) |
1.5
(34.7) |
−10.8
(12.6) |
−19.3
(−2.7) |
0.8
(33.5) |
| Mean daily minimum °C (°F) |
−26.7
(−16.1) |
−23.8
(−10.8) |
−14.5
(5.9) |
−3.6
(25.5) |
3.2
(37.8) |
10.5
(50.9) |
13.7
(56.7) |
10.6
(51.1) |
3.5
(38.3) |
−5.4
(22.3) |
−16.5
(2.3) |
−24.1
(−11.4) |
−6.1
(21.0) |
| Record low °C (°F) |
−42.7
(−44.9) |
−40.3
(−40.5) |
−37.1
(−34.8) |
−20.3
(−4.5) |
−10.8
(12.6) |
−1.3
(29.7) |
1.1
(34.0) |
−3.4
(25.9) |
−12.0
(10.4) |
−24.8
(−12.6) |
−34.7
(−30.5) |
−42.5
(−44.5) |
−42.7
(−44.9) |
| Average precipitation mm (inches) |
3.0
(0.12) |
3.9
(0.15) |
4.3
(0.17) |
9.0
(0.35) |
20.9
(0.82) |
45.7
(1.80) |
66.1
(2.60) |
56.3
(2.22) |
26.8
(1.06) |
12.0
(0.47) |
7.4
(0.29) |
4.5
(0.18) |
259.9
(10.23) |
| Average precipitation days (≥ 1.0 mm) |
1.0 |
1.3 |
1.7 |
2.7 |
3.9 |
7.1 |
8.5 |
8.0 |
4.8 |
2.4 |
2.5 |
1.6 |
45.5 |
| Source 1: NOAA (extremes 1962–1990) [3] |
| Source 2: Starlings Roost Weather[4] |
