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 HEBGEN DAM, Montana, 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 HEBGEN DAM, MT
Daylight chart for {A['location']}, Montana, USA

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Explanation, Data Sources, Background and Discussion.

Data for HEBGEN DAM, Montana, USA

NOAA Station Id: MT244038 Latitude: 44°52'00N Longitude: 111°20'21W Elevation: 6489'

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 HEBGEN DAM, MT, use latitude 44°52'00N and longitude 111°20'21W in the form. You'll need to know the time zone of the location.

Climate (Average Weather) Data

Minimum Temperature°F2.
Maximum Temperature°F21.427.136.345.957.868.276.976.666.452.132.721.548.58
Heating Degree Days16421369125091862634917218142477512011610876.42
Cooling Degree Days000003221730003.75
Monthly Precipitationinches3.072.42.611.832.973.1321.881.871.722.573.252.44

First and Last Frost Dates

First FrostLast Frost
AUG 15SEP 02SEP 20JUN 09JUN 22JUL 06
Explanation of frost dates.

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