GREENFIELD, Iowa, 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 GREENFIELD, Iowa, 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 GREENFIELD, IA
Daylight chart for {A['location']}, Iowa, USA

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Explanation, Data Sources, Background and Discussion.

Data for GREENFIELD, Iowa, USA

NOAA Station Id: IA133438 Latitude: 41°17'55N Longitude: 094°27'21W Elevation: 1340'

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 GREENFIELD, IA, use latitude 41°17'55N and longitude 094°27'21W in the form. You'll need to know the time zone of the location.

Climate (Average Weather) Data

StatisticUnitsJanFebMarAprMayJunJulAugSepOctNovDecAverage
Minimum Temperature°F1217.827.939.150.259.564.261.853.341.829.117.239.49
Maximum Temperature°F30.136.649.462.872.982.185.884.177.265.347.233.860.61
Heating Degree Days1362105981742917316419893618071225530.08
Cooling Degree Days0006651913152669760078.83
Monthly Precipitationinches0.991.052.263.734.314.284.653.693.942.512.221.312.91

First and Last Frost Dates


First FrostLast Frost
10%50%90%10%50%90%
SEP 22OCT 08OCT 25APR 11APR 25MAY 08
Explanation of frost dates.


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