Climate
Huma County has a monsoon-influenced humid continental climate (Köppen Dwb) with very warm and humid summers and brutally cold and extremely dry winters. Although temperatures consistently averages above 10 °C (50 °F) from May to September, the mean annual temperature, at −1.01 °C (30.2 °F), is low enough to form sporadic permafrost on sheltered sites, which is unusual for areas with this climatic classification. More than 70% of the annual precipitation occurs from June to September.
| Climate data for Huma County (1971–2000) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average high °C (°F) | −19.6 (−3.3) |
−11.7 (10.9) |
−2 (28.4) |
9.2 (48.6) |
18.6 (65.5) |
24.9 (76.8) |
26.6 (79.9) |
24.1 (75.4) |
17.8 (64.0) |
7.0 (44.6) |
−7.5 (18.5) |
−18.2 (−0.8) |
5.77 |
| Average low °C (°F) | −31.3 (−24.3) |
−26.8 (−16.2) |
−17.3 (0.9) |
−3.7 (25.3) |
4.0 (39.2) |
11.1 (52.0) |
14.9 (58.8) |
12.5 (54.5) |
5.0 (41.0) |
−5.1 (22.8) |
−18.8 (−1.8) |
−28.7 (−19.7) |
−7.02 (19.36) |
| Precipitation mm (inches) | 5.3 (0.209) |
3.8 (0.15) |
7.7 (0.303) |
27.6 (1.087) |
41.3 (1.626) |
71.8 (2.827) |
114.0 (4.488) |
108.7 (4.28) |
51.2 (2.016) |
20.9 (0.823) |
11.3 (0.445) |
7.6 (0.299) |
471.2 (18.551) |
| % humidity | 71 | 67 | 60 | 54 | 52 | 68 | 76 | 79 | 72 | 61 | 68 | 73 | 66.8 |
| Avg. precipitation days | 7.7 | 4.6 | 4.8 | 7.5 | 10.2 | 13.6 | 14.5 | 14.2 | 11.4 | 7.2 | 7.1 | 8.5 | 111.3 |
| Mean monthly sunshine hours | 146.7 | 200.4 | 252.7 | 235.8 | 271.8 | 282.0 | 260.7 | 243.8 | 201.0 | 202.5 | 162.2 | 126.5 | 2,586.1 |
| Source: China Meteorological Administration | |||||||||||||
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