PROJ00137

• Contract/PO #: C153467
• Contractor Name: Greeley, City of
• Contract Type: Loan
• Water District: 0
• County: Weld
• Bill Number: XB 99-999
• Loan Projects - Doc Type: Feasibility Study

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Spring is the wettest, cloudiest, and windiest season. Much of the
precipitation that occurs in spring falls as snow during the colder periods of
the season. In the summer, precipitation usually resul ts from scattered local
thunderstorms duri ng the afternoon and eveni ng. r~orni ngs are usually cl ear
and sunny. Autumn is generally the sunniest season. Periods of unpleasant
weather are generally brief. Winter has the least precipitation accumulation;
however, precipitation frequency is higher than in autumn. There is also more
cloudiness and higher relative humidity than in autumn. Winter weather can be
quite severe, but as a general rule the severity does not last long.

Climatological data were obtained for Greeley and Estes Park, Colorado. The
Estes Park station was chosen for its proximity to the reservoir site.
Stations closer to the site were not displayed because they had incomplete or
very short peri ods of record. Tabl es 1.1 and 1. 2 show the normal monthly
temperature and precipitation at each station. The term "normal" as applied
to temperature and preci pi tation refers to the 30-year average for the peri od
from 1951 through 1980. The monthly averages represent the averages of the
mean daily temperature and precipitation data.

The Greeley station is located at elevation 4810 feet. Extreme temperatures
range from _450F to 1070F. The hottest month is usually July and the coldest
January, with' normal monthly temperatures of 73.60F and 25.0oF, respectively;
Normal monthly preci pitati on vari es consi derably from 0.28 inches in February
to 2.50 inches in May. The growing season averages 138 days.

For the Estes Park station, daily temperature extremes have historically
varied between -390F and 980F. Normal monthly temperatures range from 27.30F
in January to 62.20F in July. The normal annual temperature is 43.20F. Normal
monthly precipitation ranges from 0.39 inches in February to 2;13 inches in
May. All of the winter precipitation falls as snow. The elevation of the
Estes Park station is 7525 feet.

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