When to go · United States

When to go to Allentown

Twelve months of averages for Allentown, and what they say about when to go.

When to go

What the averages say

Mean daily highs and lows and the month's rain, averaged over 2001 to 2020.

On these averages, Allentown has a mean high between 18°C and 32°C and under 150 mm of rain in May to October.

Humid months (a high of 25°C or more with relative humidity of 70% or more): June to September.
Cold months (a mean high under 10°C): December to March.
The warmest month is July (30°C) and the coolest January (2°C). The wettest is July (126 mm) and the driest February (74 mm); about 1,234 mm of rain falls in a year.

How these sentences are worded

Each sentence is written from the figures by fixed rules, and says no more than they do. Mild to warm: a mean daily high from 18°C up to 32°C. Hot: 32°C or more. Cool: 10°C up to 18°C. Cold: under 10°C. Dry: under 50 mm of rain in the month; wet: 150 mm or more. Humid: a high of 25°C or more with relative humidity of 70% or more. A month is described as good for going when it is mild to warm and not wet.

Allentown: highs, lows and rainHighLowRain

The year at a glance

Mild to warm and dry
Mild to warm, humid or showery
Hot
Cool
Wet
Cold

JanCold
FebCold
MarCold
AprCool
MayMild–warm, mixed
JunMild–warm, mixed
JulMild–warm, mixed
AugMild–warm, mixed
SeptMild–warm, mixed
OctMild–warm, mixed
NovCool
DecCold

Month by month

Every month in Allentown

The whole year, with humidity, cloud and the sunlight reaching the ground.

Climate in Allentown by month: mean daily high and low, rain, and what the month is like
Month	High	Low	Rain	Humidity	Cloud	Sunlight (kWh/m²/day)	High in Dubai	What it is like
January	2°C	-7°C	75 mm	87%	66%	1.9	23°C	Cold
February	3°C	-6°C	74 mm	86%	64%	2.7	24°C	Cold
March	8°C	-2°C	91 mm	82%	63%	3.6	27°C	Cold
April	16°C	4°C	97 mm	78%	62%	4.8	31°C	Cool
May	22°C	10°C	104 mm	79%	64%	5.3	35°C	Mild to warm, humid or showery
June	27°C	15°C	124 mm	77%	59%	5.9	37°C	Mild to warm, humid or showery
July	30°C	18°C	126 mm	72%	54%	6	39°C	Mild to warm, humid or showery
August	29°C	17°C	118 mm	72%	54%	5.2	39°C	Mild to warm, humid or showery
September	25°C	13°C	119 mm	73%	52%	4.2	37°C	Mild to warm, humid or showery
October	18°C	7°C	116 mm	79%	58%	2.9	34°C	Mild to warm, humid or showery
November	11°C	1°C	86 mm	82%	60%	2.1	29°C	Cool
December	4°C	-4°C	104 mm	87%	68%	1.6	25°C	Cold

The Dubai column is Dubai's mean daily high, for comparison.

Modelled averages for an area about 50 km across, not a weather station's record: NASA POWER climatology, 2001–2020. These data were obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program.

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Plan a trip to Allentown More about Allentown When to go

Month

High

Low

Rain

Humidity

Cloud

Sunlight (kWh/m²/day)

High in Dubai

What it is like

January

2°C

-7°C

75 mm

87%

66%

1.9

23°C

Cold

February

3°C

-6°C

74 mm

86%

64%

2.7

24°C

Cold

March

8°C

-2°C

91 mm

82%

63%

3.6

27°C

Cold

April

16°C

4°C

97 mm

78%

62%

4.8

31°C

Cool

May

22°C

10°C

104 mm

79%

64%

5.3

35°C

Mild to warm, humid or showery

June

27°C

15°C

124 mm

77%

59%

5.9

37°C

Mild to warm, humid or showery

July

30°C

18°C

126 mm

72%

54%

39°C

Mild to warm, humid or showery

August

29°C

17°C

118 mm

72%

54%

5.2

39°C

Mild to warm, humid or showery

September

25°C

13°C

119 mm

73%

52%

4.2

37°C

Mild to warm, humid or showery

October

18°C

7°C

116 mm

79%

58%

2.9

34°C

Mild to warm, humid or showery

November

11°C

1°C

86 mm

82%

60%

2.1

29°C

Cool

December

4°C

-4°C

104 mm

87%

68%

1.6

25°C

Cold