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Template:Allentown, Pennsylvania weatherbox

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Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 72
(22)
81
(27)
87
(31)
93
(34)
97
(36)
100
(38)
105
(41)
100
(38)
99
(37)
93
(34)
81
(27)
72
(22)
105
(41)
Mean maximum °F (°C) 60.2
(15.7)
60.6
(15.9)
70.6
(21.4)
83.2
(28.4)
89.3
(31.8)
92.6
(33.7)
94.8
(34.9)
92.8
(33.8)
89.2
(31.8)
80.4
(26.9)
70.9
(21.6)
61.7
(16.5)
95.9
(35.5)
Mean daily maximum °F (°C) 38.4
(3.6)
41.6
(5.3)
50.8
(10.4)
63.4
(17.4)
73.5
(23.1)
81.9
(27.7)
86.4
(30.2)
84.3
(29.1)
77.4
(25.2)
65.5
(18.6)
53.8
(12.1)
43.1
(6.2)
63.3
(17.4)
Daily mean °F (°C) 30.1
(−1.1)
32.4
(0.2)
40.7
(4.8)
51.8
(11.0)
62.0
(16.7)
70.9
(21.6)
75.6
(24.2)
73.6
(23.1)
66.3
(19.1)
54.6
(12.6)
43.9
(6.6)
35.0
(1.7)
53.1
(11.7)
Mean daily minimum °F (°C) 21.8
(−5.7)
23.2
(−4.9)
30.5
(−0.8)
40.3
(4.6)
50.6
(10.3)
59.9
(15.5)
64.7
(18.2)
62.8
(17.1)
55.2
(12.9)
43.8
(6.6)
34.1
(1.2)
26.8
(−2.9)
42.8
(6.0)
Mean minimum °F (°C) 4.2
(−15.4)
5.9
(−14.5)
14.1
(−9.9)
25.9
(−3.4)
35.3
(1.8)
46.5
(8.1)
53.7
(12.1)
51.1
(10.6)
39.9
(4.4)
28.7
(−1.8)
19.1
(−7.2)
11.7
(−11.3)
1.8
(−16.8)
Record low °F (°C) −15
(−26)
−12
(−24)
−5
(−21)
12
(−11)
28
(−2)
39
(4)
46
(8)
41
(5)
30
(−1)
21
(−6)
3
(−16)
−8
(−22)
−15
(−26)
Average precipitation inches (mm) 3.30
(84)
2.77
(70)
3.63
(92)
3.67
(93)
3.65
(93)
4.40
(112)
5.30
(135)
4.56
(116)
4.84
(123)
4.14
(105)
3.24
(82)
3.86
(98)
47.36
(1,203)
Average snowfall inches (cm) 9.8
(25)
10.8
(27)
6.3
(16)
0.5
(1.3)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.2
(0.51)
0.9
(2.3)
4.6
(12)
33.1
(84)
Average extreme snow depth inches (cm) 6.4
(16)
7.9
(20)
4.9
(12)
0.3
(0.76)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.2
(0.51)
0.6
(1.5)
2.9
(7.4)
12.4
(31)
Average precipitation days (≥ 0.01 in) 11.4 10.1 10.9 11.8 12.4 11.4 11.0 10.2 9.6 9.9 8.9 11.5 129.1
Average snowy days (≥ 0.1 in) 5.1 4.3 2.6 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.5 2.9 15.7
Average relative humidity (%) 70 66 62 61 66 68 70 72 74 72 70 71 69
Percent possible sunshine 43 48 53 47 54 63 57 56 54 53 45 42 51
Source: NOAA (relative humidity 1981–2010)[1][2][3]

References

  1. ^ "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved August 8, 2021.
  2. ^ "Station: Allentown INTL AP, PA". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Retrieved August 8, 2021.
  3. ^ "Local Climatological Data Annual Summary with Comparative Data for Allentown, Pennsylvania (KABE)" (PDF). National Oceanic and Atmospheric Administration. Archived from the original (PDF) on August 9, 2021. Retrieved August 8, 2021.
  1. ^ Mean monthly maxima and minima (i.e. the highest and lowest temperature readings during an entire month or year) calculated based on data at said location from 1981 to 2010.
  2. ^ Official records for Allentown were kept at Allentown Gas Company from March 1922 to December 1943, and at Lehigh Valley Int'l since January 1944. For more information, see ThreadEx.