Allentown (PA)
April
Weather in Allentown, Pennsylvania for April 2026
Your guide to Allentown weather in April - trends and predictions
Special Weather Statement - See hour by hour.
So far, April 2026 in Allentown is slightly warmer than the historical average by 1.8 °F.
The forecast for the upcoming days in Allentown predicts a temperature of 16.9 °F, which is slightly above the historical average.
In general, the average temperature in Allentown at the beginning of April is 13.7 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 15.3 °F by the end of April.
The climate of Allentown in April is notably wet, with an average of 11 rainy days, and a total of 72.3 mm of precipitation.
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Temperatures
Rain 🌧️
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19
Dry days
11
Rainy days
0
Snow days
16°/6°
Temperatures
21 km/h
Avg max wind
68 %
Avg humidity
Allentown Weather April
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Temperatures trend during April in Allentown
See the weather trend as well as the moving average line
April weather in Allentown day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Apr. 1 |  Partly cloudy | 17° /6° | 15.8 mm | 3 | |
| Apr. 2 |  Overcast | 10° /1° | 0.1 mm | 2 | |
| Apr. 3 |  Moderate rain at times | 19° /3° | 1.1 mm | 3 | |
| Apr. 4 | Moderate or heavy rain shower | 17° /9° | 11 mm | 3 | |
| Apr. 5 | Moderate or heavy rain shower | 13° /5° | 4.2 mm | 2 | |
| Apr. 6 | Moderate or heavy rain shower | 12° /5° | 2.7 mm | 5 | |
| Apr. 7 |  Heavy rain at times | 8° /1° | 4.2 mm | 4 | |
| Apr. 8 | Partly cloudy | 8° /-2° | 0 mm | 5 | |
| Apr. 9 |  Sunny | 10° /-2° | 0 mm | 5 | |
| Apr. 10 |  Patchy rain possible | 13° /1° | 1.1 mm | 2 | |
| Apr. 11 | Moderate rain at times | 12° /4° | 3.5 mm | 5 | |
| Apr. 12 | Moderate or heavy rain shower | 8° /1° | 11.2 mm | 4 | |
| Apr. 13 | Overcast | 17° /4° | 0 mm | 5 | |
| Apr. 14 | Overcast | 21° /8° | 0 mm | 4 | |
| Apr. 15 | Patchy rain possible | 23° /11° | 0.1 mm | 6 | |
| Apr. 16 | Sunny | 35° /18° | 0.1 mm | 1.8 | |
| Apr. 17 |  Cloudy | 25° /13° | 0 mm | 1.4 | |
| Apr. 18 | Overcast | 21° /13° | 0 mm | 1.9 | |
| Apr. 19 |  Moderate rain | 12° /3° | 15.3 mm | 0.6 | |
| Apr. 20 | Patchy rain possible | 8° /-1° | 0.1 mm | 0.1 | |
| Apr. 21 | Patchy rain possible | 13° /-3° | 1 mm | 1 | |
| Apr. 22 | Partly cloudy | 16° /6° | 0.1 mm | 4 | |
| Apr. 23 | Partly cloudy | 19° /3° | 0 mm | 4 | |
| Apr. 24 | Cloudy | 21° /9° | 0 mm | 3 | |
| Apr. 25 | Patchy rain possible | 16° /6° | 4.8 mm | 2 | |
| Apr. 26 | Sunny | 16° /3° | 0 mm | 3 | |
| Apr. 27 | Partly cloudy | 17° /4° | 0 mm | 4 | |
| Apr. 28 | Moderate rain | 6° /5° | 6.6 mm | 2 | |
| Apr. 29 | Patchy rain possible | 11° /3° | 3.8 mm | 2 | |
| Apr. 30 | Overcast | 20° /12° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Allentown in April is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Allentown forecast closer to your planned date for the most up-to-date weather information.
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Allentown in April - FAQ
What are the expected maximum and minimum temperatures in Allentown during April?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 6°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Allentown during April?
Moderate rainfall is anticipated in Allentown during April, with a total of 72.3 mm spread over approximately 11 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Allentown during April?
The average wind speed in Allentown during April is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
April rainfall patterns in Allentown
Explore the daily rainfall trends and prepare for Allentowns April weather 💧
Typically, Allentown has 11 rainy days in April with a total of 72.3 mm of rainfall.
UV exposure in Allentown during April
Stay informed about UV levels for safe outdoor activities throughout the month of April ☀️
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