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 NATIONAL ARBORETUM DC, Maryland, 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 NATIONAL ARBORETUM DC, MD
Daylight chart for {A['location']}, Maryland, USA

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Explanation, Data Sources, Background and Discussion.


NOAA Station Id: MD186350 Latitude: 38°54'00N Longitude: 076°59'00W Elevation: 50'

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 NATIONAL ARBORETUM DC, MD, use latitude 38°54'00N and longitude 076°59'00W in the form. You'll need to know the time zone of the location.

Climate (Average Weather) Data

Minimum Temperature°F242633.442.252.461.866.964.856.944.135.728.244.70
Maximum Temperature°F4346.455.36675.884.488.987.480.4695847.766.86
Heating Degree Days97780764133210860135283544837380.92
Cooling Degree Days0004802493993451442200103.58
Monthly Precipitationinches3.572.843.923.264.293.634.

First and Last Frost Dates

First FrostLast Frost
OCT 12OCT 26NOV 09MAR 28APR 09APR 20
Explanation of frost dates.

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