PROJ00318

• Contract/PO #: C153618
• Contractor Name: Greeley, City of
• Contract Type: Loan
• Water District: 3
• County: Larimer
• Bill Number: SB 87-15
• Loan Projects - Doc Type: Feasibility Study

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separated from the Paci fi c Ocean by the mountai ns, Gree1 ey experi ences
relative humidity, low average precipitation, and considerable sunshine.
city has an average of 325 sunny days per year.

a low
The

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 results from scattered local
thunderstonns duri ng the afternoon and eveni ng. Morni ngs are usually c1 ear
and sunny. Autumn is generally the sunni est season. Peri ods of unp1 easant
weather are generally bri ef. l~i nter has the 1 east precipi tati on accumu1 ati on;
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. Tab1 es 1.1 and 1. 2 show the normal monthly
temperature and precipitation at each station. The tenn "nonnal" as applied
to temperature and preci pi tati on 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 Gree1 ey stati on is located at e1 evati on 4810 feet. Extreme temperaturp.s
range from _450F to 1070F. The hottest month is usually July and the coldest,
January, wi th normal monthly temperatures of 73.60F and 25. OOF, respecti ve1y.
Normal monthly preci pi tati on vari es consi derab1y from 0.28 inches in February
to 2.50 inches in May. The gro\~ing season averages 138 days.

For the Estes Park station, daily temperature extremes have historically
vari ed between _390F and 980F. Nonna1 monthly temperatures range from 27. 3DF
in January to 62.20F in July. The nonna1 annual temperature is 43.2DF.
Nonna1 monthly precipitation ranges from 0.39 inches in February to 2.13
inches in May. All the winter precipitation falls as snow. The elevation of
the Estes Park station is 7525 feet.

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