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 COLLEGE OBSERVATORY, Alaska, USA

One predicted temperature increase is
between 5°C and 10°C (9.0°F and 18.0°F).
See About the Global Warming Data for more information about this prediction.

climate chart for COLLEGE OBSERVATORY, AK
Daylight chart for {A['location']}, Alaska, USA

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Explanation, Data Sources, Background and Discussion.


NOAA Station Id: AK502107 Latitude: 64°51'33N Longitude: 147°50'20W Elevation: 621'

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 COLLEGE OBSERVATORY, AK, use latitude 64°51'33N and longitude 147°50'20W in the form. You'll need to know the time zone of the location.

Climate (Average Weather) Data

Minimum Temperature°F-12.5-9.81.2193546.550.14533.816-2.4-9.417.71
Maximum Temperature°F2.39.625.843.560.870.973.466.854.731.912.15.238.08
Heating Degree Days21751824159710125291951262976251274180620821128.50
Cooling Degree Days000005241510003.75
Monthly Precipitationinches0.610.440.340.20.61.681.961.951.321.010.780.820.98

First and Last Frost Dates

First FrostLast Frost
AUG 17AUG 30SEP 13MAY 12MAY 25JUN 07
Explanation of frost dates.

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