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

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Explanation, Data Sources, Background and Discussion.

Data for KNOXVILLE, Iowa, USA

NOAA Station Id: IA134502 Latitude: 41°19'56N Longitude: 093°06'40W Elevation: 920'

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 KNOXVILLE, IA, use latitude 41°19'56N and longitude 093°06'40W in the form. You'll need to know the time zone of the location.

Climate (Average Weather) Data

Minimum Temperature°F10.716.427.138.250.559.864.962.553.241.828.716.639.20
Maximum Temperature°F29.335.74860.971.981.185.583.475.96447.133.659.70
Heating Degree Days13951091850468178191181003838141237546.17
Cooling Degree Days0004611833162638790076.92
Monthly Precipitationinches0.841.1823.874.464.364.394.23.642.742.281.132.92

First and Last Frost Dates

First FrostLast Frost
SEP 26OCT 12OCT 27APR 04APR 19MAY 05
Explanation of frost dates.

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