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 PORTLAND INTL AP, Maine, 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 PORTLAND INTL AP, ME
Daylight chart for {A['location']}, Maine, USA

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Explanation, Data Sources, Background and Discussion.


NOAA Station Id: ME176905 Latitude: 43°38'32N Longitude: 070°18'16W Elevation: 45'

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 PORTLAND INTL AP, ME, use latitude 43°38'32N and longitude 070°18'16W in the form. You'll need to know the time zone of the location.

Climate (Average Weather) Data

Minimum Temperature°F12.515.625.234.744.252.958.657.248.537.429.518.736.25
Maximum Temperature°F30.934.142.252.863.372.878.877.368.957.947.136.455.21
Heating Degree Days1346114198564936111619371995237901152609.83
Cooling Degree Days00007511441202410028.92
Monthly Precipitationinches4.

First and Last Frost Dates

First FrostLast Frost
SEP 26OCT 06OCT 15APR 19MAY 02MAY 15
Explanation of frost dates.

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