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Allentown 7-day weather forecast
Stacker created the forecast for Allentown, Pennsylvania using data from OpenWeather. This week's high is 103 °F on Monday, while the low is 69 °F on Friday. There are expected to be 2 sunny days and rain on 4 days this week.
NWS Mount Holly NJ has issued an air quality alert until Tuesday at 12:00 AM and a extreme heat warning until Thursday at 08:00 PM.
Monday, June 23
- High of 103 °F, low of 77 °F (57% humidity)- Partly cloudy with a 0% chance of rain
- Very high risk of harm from sun exposure (10 UV index)
- Light breeze (7 mph wind)
- Sunrise at 5:31 AM, sunset at 8:36 PM
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1 / 6
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Tuesday, June 24
- High of 94 °F, low of 75 °F (54% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (10 UV index)
- Gentle breeze (9 mph wind)
- Sunrise at 5:32 AM, sunset at 8:36 PM
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (10 UV index)
- Gentle breeze (9 mph wind)
- Sunrise at 5:32 AM, sunset at 8:36 PM

2 / 6
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Wednesday, June 25
- High of 92 °F, low of 73 °F (56% humidity)
- Mostly sunny with a 94% chance of rain (2 mm of rain)
- Very high risk of harm from sun exposure (10 UV index)
- Gentle breeze (9 mph wind)
- Sunrise at 5:32 AM, sunset at 8:36 PM
- New moon
- Mostly sunny with a 94% chance of rain (2 mm of rain)
- Very high risk of harm from sun exposure (10 UV index)
- Gentle breeze (9 mph wind)
- Sunrise at 5:32 AM, sunset at 8:36 PM
- New moon

3 / 6
Dmitry Naumov // Shutterstock
Thursday, June 26
- High of 86 °F, low of 71 °F (72% humidity)
- Overcast with a 100% chance of rain (21 mm of rain)
- Very high risk of harm from sun exposure (11 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 5:32 AM, sunset at 8:36 PM
- Overcast with a 100% chance of rain (21 mm of rain)
- Very high risk of harm from sun exposure (11 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 5:32 AM, sunset at 8:36 PM

4 / 6
Valeriy Boyarskiy // Shutterstock
Friday, June 27
- High of 80 °F, low of 69 °F (83% humidity)
- Overcast with a 100% chance of rain (4 mm of rain)
- Gentle breeze (8 mph wind)
- Sunrise at 5:33 AM, sunset at 8:36 PM
- Overcast with a 100% chance of rain (4 mm of rain)
- Gentle breeze (8 mph wind)
- Sunrise at 5:33 AM, sunset at 8:36 PM

5 / 6
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Saturday, June 28
- High of 90 °F, low of 70 °F (64% humidity)
- Partly cloudy with a 100% chance of rain (13 mm of rain)
- Gentle breeze (11 mph wind)
- Sunrise at 5:33 AM, sunset at 8:36 PM
- Partly cloudy with a 100% chance of rain (13 mm of rain)
- Gentle breeze (11 mph wind)
- Sunrise at 5:33 AM, sunset at 8:36 PM
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6 / 6
Flamingo Images // Shutterstock
Sunday, June 29
- High of 90 °F, low of 71 °F (55% humidity)
- Partly cloudy with a 0% chance of rain
- Light breeze (7 mph wind)
- Sunrise at 5:33 AM, sunset at 8:36 PM
- Partly cloudy with a 0% chance of rain
- Light breeze (7 mph wind)
- Sunrise at 5:33 AM, sunset at 8:36 PM