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

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Explanation, Data Sources, Background and Discussion.

Data for CHINOOK, Montana, USA

NOAA Station Id: MT241722 Latitude: 48°35'06N Longitude: 109°14'01W Elevation: 2345'

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 CHINOOK, MT, use latitude 48°35'06N and longitude 109°14'01W in the form. You'll need to know the time zone of the location.

Climate (Average Weather) Data

StatisticUnitsJanFebMarAprMayJunJulAugSepOctNovDecAverage
Minimum Temperature°F-0.56.216.729.940.849.953.151.438.627.213.43.727.53
Maximum Temperature°F25.933.445.158.969.177.88483.772.159.240.329.756.60
Heating Degree Days162412651058618318108386931467511451497727.42
Cooling Degree Days00007741471482500033.42
Monthly Precipitationinches0.540.320.560.992.292.291.661.341.430.660.470.511.09

First and Last Frost Dates


First FrostLast Frost
10%50%90%10%50%90%
SEP 02SEP 12SEP 22APR 30MAY 18JUN 04
Explanation of frost dates.


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