WEATHER IN Allentown
Climate tables. Data for Allentown.
Monthly temperature
| Month | Record low | Average low | Average | Average high | Record high |
| january | -26.1 (1994) | -5.7 | -1.1 | 3.6 | 22.2 (1950) |
| february | -24.4 (1934) | -4.9 | 0.2 | 5.3 | 24.4 (1985) |
| march | -20.6 (1934) | -0.8 | 4.8 | 10.4 | 30.6 (1998) |
| april | -11.1 (1923) | 4.6 | 11.0 | 17.4 | 33.9 (1976) |
| may | -2.2 (1947) | 10.3 | 16.7 | 23.1 | 36.1 (1962) |
| june | 3.9 (1945) | 15.5 | 21.6 | 27.7 | 37.8 (1925) |
| july | 7.8 (2001) | 18.2 | 24.2 | 30.2 | 40.6 (1966) |
| august | 5.0 (1986) | 17.1 | 23.1 | 29.1 | 37.8 (1955) |
| september | -1.1 (1947) | 12.9 | 19.1 | 25.2 | 37.2 (1980) |
| october | -6.1 (1940) | 6.6 | 12.6 | 18.6 | 33.3 (1927) |
| november | -16.1 (1938) | 1.2 | 6.6 | 12.1 | 27.2 (1950) |
| december | -22.2 (1950) | -2.9 | 1.7 | 6.2 | 22.2 (2006) |
| year | -26.1 (1994) | 4.9 | 10.6 | 16.3 | 40.6 (1966) |
Monthly precipitation
| Month | Average | Record low | Record high | Daily high |
| january | 84 | 17 (1981) | 214 (1979) | 60 (1949) |
| february | 70 | 14 (2002) | 194 (2008) | 75 (2008) |
| march | 92 | 23 (2006) | 184 (1913) | 76 (1952) |
| april | 93 | 16 (1985) | 256 (1952) | 88 (2005) |
| may | 93 | 2 (1964) | 270 (1984) | 82 (1972) |
| june | 112 | 9 (1949) | 267 (1938) | 92 (1938) |
| july | 135 | 8 (1999) | 265 (1969) | 144 (2010) |
| august | 116 | 19 (1995) | 342 (2011) | 121 (1933) |
| september | 123 | 3 (1943) | 330 (2011) | 162 (1999) |
| october | 105 | 4 (1963) | 334 (2005) | 221 (2005) |
| november | 82 | 11 (1931) | 246 (1972) | 85 (1972) |
| december | 98 | 10 (1955) | 200 (1973) | 68 (1953) |
| year | 1152 | 731 (1941) | 1822 (2011) | 221 (2005) |
Number of days with solid, liquid, and mixed precipitation
| Type of precipitation | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Wind speed, m/s
| jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
The frequency of different wind directions, %
| direction | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Air humidity, %
| jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Snow cover
| Month | jul | aug | sep | oct | nov | dec | jan | feb | mar | apr | may | jun | Year |
| number of days | |||||||||||||
| height (sm) | |||||||||||||
| max height (sm) |
Cloudy, score
| month | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
| total | |||||||||||||
| low |
Number of clear, cloudy and cloudy days
| month | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
| Total cloud | |||||||||||||
| Low cloud | |||||||||||||
Number of days with different phenomena
| phenomenon | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
The frequency of different types of clouds, %
| type of clouds | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |