Heyang County
Heyang County (simplified Chinese: 合阳县; traditional Chinese: 合陽縣; pinyin: Héyáng Xiàn, 郃陽) is a county in Shaanxi Province, China, bordering Shanxi Province to the east across the Yellow River. It is under the administration of the prefecture-level city of Weinan.
History
Heyang County dates to at least the early Han, when Liu Bang's elder brother Liu Xi was demoted to being its marquess after fleeing a Xiongnu attack on Dai c. 200 BC.
Legacy
A species of stone loach, Triplophysa heyangensis, is named after Heyang County where it was first discovered.
Administrative divisions
As 2016, this county is divided to 12 towns.
- Towns
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Climate
| Climate data for Heyang (1991–2020 normals, extremes 1981–2010) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 16.2 (61.2) |
20.5 (68.9) |
27.7 (81.9) |
36.8 (98.2) |
37.1 (98.8) |
39.2 (102.6) |
39.2 (102.6) |
37.7 (99.9) |
37.3 (99.1) |
30.2 (86.4) |
23.6 (74.5) |
18.8 (65.8) |
39.2 (102.6) |
| Mean daily maximum °C (°F) | 3.8 (38.8) |
7.9 (46.2) |
14.1 (57.4) |
20.9 (69.6) |
25.8 (78.4) |
29.9 (85.8) |
30.8 (87.4) |
28.9 (84.0) |
24.1 (75.4) |
18.3 (64.9) |
11.4 (52.5) |
5.4 (41.7) |
18.4 (65.2) |
| Daily mean °C (°F) | −1.7 (28.9) |
2.1 (35.8) |
8.1 (46.6) |
14.5 (58.1) |
19.5 (67.1) |
24.0 (75.2) |
25.5 (77.9) |
23.8 (74.8) |
19.0 (66.2) |
12.9 (55.2) |
5.9 (42.6) |
−0.2 (31.6) |
12.8 (55.0) |
| Mean daily minimum °C (°F) | −6.0 (21.2) |
−2.2 (28.0) |
3.2 (37.8) |
8.7 (47.7) |
13.5 (56.3) |
18.4 (65.1) |
21.1 (70.0) |
19.9 (67.8) |
15.1 (59.2) |
8.7 (47.7) |
1.6 (34.9) |
−4.4 (24.1) |
8.1 (46.7) |
| Record low °C (°F) | −19.0 (−2.2) |
−15.0 (5.0) |
−12.7 (9.1) |
−4.3 (24.3) |
−0.8 (30.6) |
7.4 (45.3) |
13.3 (55.9) |
11.5 (52.7) |
2.6 (36.7) |
−6.0 (21.2) |
−16.5 (2.3) |
−21.2 (−6.2) |
−21.2 (−6.2) |
| Average precipitation mm (inches) | 6.2 (0.24) |
9.7 (0.38) |
15.4 (0.61) |
31.7 (1.25) |
47.7 (1.88) |
61.8 (2.43) |
99.9 (3.93) |
104.7 (4.12) |
79.9 (3.15) |
48.6 (1.91) |
19.9 (0.78) |
3.3 (0.13) |
528.8 (20.81) |
| Average precipitation days (≥ 0.1 mm) | 3.2 | 3.7 | 4.4 | 6.1 | 7.9 | 8.0 | 10.3 | 9.8 | 9.9 | 7.7 | 5.4 | 2.5 | 78.9 |
| Average snowy days | 4.0 | 3.3 | 1.7 | 0.2 | 0 | 0 | 0 | 0 | 0 | 0 | 1.6 | 3.1 | 13.9 |
| Average relative humidity (%) | 53 | 54 | 52 | 55 | 56 | 58 | 70 | 74 | 74 | 70 | 64 | 54 | 61 |
| Mean monthly sunshine hours | 179.8 | 167.8 | 206.9 | 229.9 | 240.5 | 230.9 | 231.6 | 221.1 | 175.9 | 170.6 | 164.2 | 178.6 | 2,397.8 |
| Percent possible sunshine | 57 | 54 | 55 | 58 | 55 | 53 | 53 | 54 | 48 | 49 | 54 | 59 | 54 |
| Source: China Meteorological Administration | |||||||||||||