天气趋势 meaning in English

weather outlook
weather prospect
weather trend
weather-trend

Weather trend vis 10km , temporarily down to 3km in rain showers
天气趋势：能见度10公里，短时降到3公里有阵雨。
This paper analyzes the relationships among precipitation , runoff and crop water requirement , and investigates the effects of integrated drought - resistant technologies during whole growth period on the production of corn and millet in north part of shanxi province , based on the forecasting of long - term climate trend and the objective assessment of annual water supply and demand on farmlands
摘要通过对降水量、地面径流量、作物需水量的综合分析，结合山西省中长期天气趋势预报，在客观定量地评价年度内农田水分盈亏指标的基础上，实施集成旱作技术，对玉米和谷子进行全生育期农田管理，取得明显效果。