QUINCY DAM 21, Illinois, USA:
Climate, Global Warming, and Daylight Charts and Data

Scroll down to see the all the data on which the charts are based. Also see Explanation, background, and discussion.
Global Warming/Climate Change for QUINCY DAM 21, Illinois, USA

One predicted temperature increase is
between 3°C and 5°C (5.4°F and 9.0°F).
See About the Global Warming Data for more information about this prediction.

climate chart for QUINCY DAM 21, IL
Daylight chart for {A['location']}, Illinois, USA

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Explanation, Data Sources, Background and Discussion.

Data for QUINCY DAM 21, Illinois, USA

NOAA Station Id: IL117077 Latitude: 39°54'21N Longitude: 091°25'41W Elevation: 483'

Sunrise and Sunset Data

The yellow section shows when the sun is up, and how this changes over the year. Use the time-of-day scales, on the left and right, and the month scale on the top and bottom, to tell approximately when sunrise and sunset occur. See Sunrise, Sunset, and Daylight for more info.

The sunrise and sunset times shown in the chart are approximate. They are accurate for the latitude, and show the precise amount of daylight, but the rise and set times may be offset (up or down in the chart) since I don't have an automated way of matching time zones to longitudes. The charts are made assuming that the location is in the middle of an evenly spaced time zone.

For precise times see US Naval Observatory. For QUINCY DAM 21, IL, use latitude 39°54'21N and longitude 091°25'41W in the form. You'll need to know the time zone of the location.

Climate (Average Weather) Data

StatisticUnitsJanFebMarAprMayJunJulAugSepOctNovDecAverage
Minimum Temperature°F1620.630.140.851.360.965.562.954.84332.521.141.63
Maximum Temperature°F33.74052.164.874.783.88885.877.966.350.937.962.99
Heating Degree Days124597174137514912012703326991101475.58
Cooling Degree Days000986232364302112120093.08
Monthly Precipitationinches1.361.742.933.484.613.263.893.093.452.53.12.222.97

First and Last Frost Dates


First FrostLast Frost
10%50%90%10%50%90%
OCT 05OCT 22NOV 08MAR 31APR 10APR 21
Explanation of frost dates.


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