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Other Stations in Allentown

About this Station

Allentown is located in the east central section of the state and in the Lehigh River valley. Twelve miles to the north is Blue Mountain, a ridge from l,000 to l,800 feet in height. The South Mountain, 500 to l,000 feet high, fringes the southern edge of the city. Otherwise the country is generally rolling with numerous small streams. A modified climate prevails. Temperatures are usually moderate and precipitation generally ample and dependable with the largest amounts occurring during the summer months when precipitation is generally showery. General climatological features of the area are slightly modified by the mountain ranges so that at times during the winter there is a temperature difference of l0 to l5 degrees between Allentown and Philadelphia, only 50 miles to the south.

The growing season averages l77 days, and generally ranges from l70 to l85 days. It begins late in April and ends late in October. The average occurrence of the last temperature of 32 degrees in the spring is late April, and the average first fall minimum of 32 degrees is mid-October.

Maximum temperatures during most years are not excessively high and temperatures above l00 degrees are seldom recorded. However, the average humidity in the valley is quite high, and combined with the normal summer temperatures, causes periods of discomfort. Winters in the valley are comparatively mild. Minimum temperatures during December, January, and February are usually below freezing, but below zero temperatures are seldom recorded.

Seasonal snowfall is quite variable. Freezing rain is a common problem throughout the Lehigh Valley. Snowstorms producing 10 inches or more occur an average of once in two years. The accumulation of snowfall over the drainage area of the Lehigh River to the north of Allentown, combined with spring rains, frequently presents a flood threat to the city and surrounding area. The valley is also subject to torrential rains that cause quick rises in the river and feeder creeks.

The area is seldom subject to destructive storms of large extent. Heavy thunderstorms and tornadoes occasionally cause damage over limited areas. An exception to the usual weather was the storm that battered the east coast on November 25, l950, when gusts of 88 mph were observed at the station.

Data Inventories

Please note that additional data (digital and non-digital) may be available for this station. Contact NCDC if additional details are needed.


Click on the following where available:


• DAT to obtain digital ascii data (charges may apply),
  Please do not order these data if you do not know what a Digital ASCII File is.
  
• INV to view inventory, or
  
• DOC to view documentation

Surface
DAT INV DOC 3200 -Cooperative Summary Of The Day
DAT INV DOC 3210 -Summary Of The Day - First Order
DAT INV DOC SOD -Daily Surface Data (TD3200/3210 combined)
DAT INV DOC 3220 -Summary Of The Month (SOM) Cooperative
DAT INV DOC 3240 -Hourly Precipitation Data
DAT INV DOC 3280 -Surface Airways Hourly And Airways Solar Radiation
DAT INV DOC 3290 -Summary Observation
DAT INV DOC 3292 -Weather Duration
DAT INV DOC 9950 -DATSAV 2 Surface (see Global Surface Station Information).

DATA

Additional data products may be available for this station. If you can't find what you are looking for here, please try our Most Popular Products page.

Forms, Publications, and Web Pages
Graphs and Other Images
Digital ASCII Files


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Forms, Publications, and Web Pages

Most of these products are publications that have been converted to on-line access. As such, these documents have column headings and are displayed in an easy-to-read format.

For additional information and product samples, click on the icon next to the desired product.

Hourly Precipitation Data for Pennsylvania
Daily/Monthly/Annual Pennsylvania Climatological Data
Record of Climatological Observations
Annual Climatological Summary
Storm Data Publication


Miscellaneous Storm Events in Lehigh County
    *All Drought Dust Storm Flood Fog Hail Hurricane & Tropical Storm Lightning Tornado Wild/Forest Fire Ocean/lake Surf Precipitation Snow & Ice Temperature Extremes Thunderstorm & High Wind

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Graphs and Other Images

Includes contour maps, time series, NEXRAD radar mosaics, and satellite images.

For additional information and product samples, click on the icon next to the desired product.

National Mosaic Reflectivity Images
Miscellaneous Satellite Images


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Digital ASCII Files

These files may or may not contain column headers. In order to use these files, you will need to import them into a spreadsheet or database package for presentation. Please do not order these data if you do not know what a Digital ASCII File is. A sample Digital ASCII File is available for viewing but content varies a great deal depending on your request. Other digital files are available Offline that may contain data for this station.

For additional information and product samples, click on the icon next to the desired product.

SOD -Daily Surface Data (TD3200/3210 combined)
3220 -Summary Of The Month (SOM) Cooperative
3240 -Hourly Precipitation Data

Station History

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NCDC / Climate-Radar Data Inventories / Locate Station / Search