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Allentown
Water Temperature in Allentown in Lehigh River: Current and Forecast
On this page, you will find comprehensive information about the water temperature in Allentown in Lehigh River, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Current Water Temperature in Allentown
55°F
TODAY
56°F
YESTERDAY
60°F
A WEEK AGO
As of today, the minimum water temperature in Allentown ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Analysis, Historical Data, and Forecast of Water Temperature
Water Temperature Chart for Lehigh River in Allentown Over the Last 30 Days
Today the water temperature in Allentown is lower than the same day in previous years. The water temperature range here in October is from 46°F to 66°F. The water temperature has decreased over the past 7 days but has increased over the past month.
The forecasted water temperature values for Allentown are presented in the table below.
The actual water temperature values near the shore may differ by a few degrees from the stated values. For the development of the forecast, we use our own mathematical model that takes into account the current water temperature changes, historical data, and key weather trends, including wind strength and direction, and air temperature in each specific region.
Table of Daily Water Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| Oct 16 | 60°F | 56°F | |
| Oct 17 | 60°F | 56°F | |
| Oct 18 | 60°F | 56°F | |
| Oct 19 | 54°F | 56°F | |
| Oct 20 | 54°F | 56°F | |
| Oct 21 | 56°F | 56°F | |
| Oct 22 | 56°F | 56°F | |
| Oct 23 | 55°F | 56°F | |
| Oct 24 | 56°F | 55°F | |
| Oct 25 | 56°F | 55°F | |
| Oct 26 | 56°F | 55°F | |
| Oct 26 | 56°F | 55°F | |
| Oct 27 | 56°F | 55°F | |
| Oct 28 | 56°F | 55°F | |
| Oct 29 | 56°F | 55°F | |
| Oct 30 | 56°F | 55°F |
Water Temperature Ranges in Allentown by Month
January
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 40°F | 48°F |
February
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 42°F | 48°F |
March
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 44°F | 52°F |
April
| Minimum | Average | Maximum |
|---|---|---|
| 41°F | 50°F | 61°F |
May
| Minimum | Average | Maximum |
|---|---|---|
| 46°F | 56°F | 70°F |
June
| Minimum | Average | Maximum |
|---|---|---|
| 57°F | 65°F | 72°F |
July
| Minimum | Average | Maximum |
|---|---|---|
| 63°F | 68°F | 75°F |
August
| Minimum | Average | Maximum |
|---|---|---|
| 63°F | 71°F | 73°F |
September
| Minimum | Average | Maximum |
|---|---|---|
| 52°F | 61°F | 70°F |
October
| Minimum | Average | Maximum |
|---|---|---|
| 46°F | 56°F | 66°F |
November
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 47°F | 61°F |
December
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 40°F | 46°F |
Monthly Water Temperature Histogram for Lehigh River in Allentown
Known Beaches in the Area of Allentown?
Cedar Beach Park
Cedar Beach Park is a 1-stars sandy beach, located in a 2 km (1 miles) radius of Allentown.
Allentown Weather
OCTOBER 23
41°F / 55°F
overcastrain: 9% | wind: 14 mph
OCTOBER 24
39°F / 59°F
overcastrain: 9% | wind: 11 mph
Water Temperature in Allentown: General Trends and Swimming Opportunities
In Allentown, Pennsylvania, the Lehigh River is a prominent feature that runs through the city, providing a picturesque setting for outdoor activities. The temperature of the river water in this area is typically cool, especially during the spring and fall seasons. During summer, the water temperature generally ranges between 60°F and 70°F (15°C to 21°C). While this range may feel refreshing, it is too cold for comfortable, extended swimming for most people. The temperature fluctuates with seasonal changes, and colder temperatures are common during the early spring and late fall due to upstream water flows and weather patterns.
Swimming in the Lehigh River in Allentown is not a popular activity, mainly because of the river’s cold water and fast-moving currents. While some may choose to wade in the shallower, calmer sections, swimming is not generally recommended due to safety concerns related to the currents and the river's overall flow. The Lehigh River, especially in Allentown, is better known for activities like kayaking, fishing, and canoeing, which are enjoyed by residents and visitors in various sections of the river. The natural beauty and recreational potential make it a great spot for these activities, but the conditions are less ideal for swimming.
For swimming, residents of Allentown often look to other local options like swimming pools or nearby lakes. These locations typically offer more controlled, warmer environments for swimming. The cooler Lehigh River, combined with its faster currents, makes it more suitable for water sports and scenic relaxation rather than traditional swimming.
Geographical Location of Allentown
Frequently Asked Questions About Allentown and its Water Temperatures
What is the current water temperature in Allentown?
The water temperature today in Allentown is 55°F (12.8°C).
What is the water temperature in Allentown during the summer months?
The average water temperature in Allentown during the summer months is typically between 65°F to 71°F (19°C to 21°C), and it can reach up to 75°F (24°C) at its warmest. However, in some years, the temperature may exceed this range.
What is the water temperature in Allentown in May?
The average water temperature in Allentown in May ranges from 46°F to 70°F (8°C to 21°C).
What is the water temperature in Allentown in September?
The average water temperature in Allentown in September is typically between 52°F to 66°F (11°C to 19°C).
Is it possible to swim in the Lehigh River in Allentown, and what are the available options for doing so?
Yes, it is possible to swim in the Leigh River in Allentown. You can either swim at your own risk or participate in organized events like the Lehigh River Swim.

