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旧 Dec 22nd, 2012, 19:10     #13
sumyi
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作者: dalplex 查看帖子
这样呀。那我的研究一下假期的问题。

中美的冬天很正式吗?
自己看看吧

The average temperature in Lima, Peru is 19.1 °C (66 °F).
The range of average monthly temperatures is 7 °C.
The warmest average max/ high temperature is 27 °C (81 °F) in February & March.
The coolest average min/ low temperature is 14 °C (57 °F) in June, July, August, September & October.
Lima receives on average 28 mm (1.1 in) of precipitation annually or 2 mm (0.1 in) each month.
On balance there are 124 days annually on which greater than 0.1 mm (0.004 in) of precipitation (rain, sleet, snow or hail) occurs or 10 days on an average month.
The month with the driest weather is February & April when on balance 0 mm (0.0 in) of rainfall (precipitation) occurs.
The month with the wettest weather is August when on balance 6 mm (0.2 in) of rain, sleet, hail or snow falls across 20 days.
Mean relative humidity for an average year is recorded as 87.2% and on a monthly basis it ranges from 84% in February & March to 90% in June, July, August & September.
Hours of sunshine range between 1.0 hours per day in August and 7.8 hours per day in March.
On balance there are 1474 sunshine hours annually and approximately 4.0 sunlight hours for each day.
On balance there are 0 days annually with measurable frost and in July there are on average 0 days with fr
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感谢 sumyi
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dalplex (Dec 22nd, 2012)