This page presents a long range weather forecast for Allentown in May as well as other months. You can quickly get a brief overview of the weather to expect in May on a daily basis.
The Allentown extended forecast data provided is based on the average values of previous years.
Long range weather forecast
Select a month and click on a day for more information:
Wednesday
May 1
16° / 7°
Thursday
May 2
25° / 12°
Friday
May 3
20° / 8°
Saturday
May 4
11° / 8°
Sunday
May 5
10° / 8°
Monday
May 6
21° / 9°
Tuesday
May 7
22° / 13°
Wednesday
May 8
27° / 16°
Thursday
May 9
25° / 14°
Friday
May 10
23° / 10°
Saturday
May 11
15° / 8°
Sunday
May 12
18° / 5°
Monday
May 13
20° / 6°
Tuesday
May 14
17° / 9°
Wednesday
May 15
14° / 7°
Thursday
May 16
22° / 11°
Friday
May 17
19° / 9°
Saturday
May 18
20° / 7°
Sunday
May 19
23° / 10°
Monday
May 20
23° / 13°
Tuesday
May 21
24° / 11°
Wednesday
May 22
23° / 12°
Thursday
May 23
22° / 12°
Friday
May 24
21° / 11°
Saturday
May 25
21° / 9°
Sunday
May 26
24° / 12°
Monday
May 27
23° / 14°
Tuesday
May 28
21° / 13°
Wednesday
May 29
23° / 12°
Thursday
May 30
23° / 12°
Friday
May 31
24° / 11°
Allentown 30 days weather forecast
Check out our estimated 30 days weather forecast for Allentown, this data is based on the average weather in Allentown in the last few years.
For a more accurate and detailed forecast, check out the 14 day weather for Allentown next to the desired date.