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Allentown (PA)
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United States weather

Weather in Allentown, Pennsylvania for January 2026

Your guide to Allentown weather in January - trends and predictions

    Snow Forecast ❄️

  • With an average of 3 snowy days, Allentown usually enjoys a light touch of snow in January.
    According to Allentown snow forecast for January 2026, 1 snowy day is expected in the next 2 weeks at Monday, January 12.

    • Temperatures

  • The forecast for the upcoming days in Allentown predicts a temperature of 5.9 °F, which is slightly above the historical average.

  • In general, the average temperature in Allentown at the beginning of January is 2.1 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of 1.9 °F by the end of January.

    • Rain 🌧️

  • With an average of 2 rainy days, Allentown experiences minimal rainfall in January.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
26
Dry days
Average rainy days
2
Rainy days
Average snowy days
3
Snow days
Average temperatures
0°/-6°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
71 %
Avg humidity

Allentown Weather January

Move between months or click on a day
December
February
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Overcast
2°
2
Sunny
2°
3
Overcast
0°
4
Partly cloudy
0°
5
Overcast
1°
6
Overcast
3°
7
Fog
7°
8
Partly cloudy
10°
9
Patchy rain possible
8°
10
Patchy rain possible
16°
11
Partly cloudy
3°
12
Partly cloudy
4°
13
Partly cloudy
6°
14
Cloudy
4°
15
Partly cloudy
1°
16
Partly cloudy
6°
17
Overcast
10°
18
Sunny
4°
19
Moderate or heavy snow showers
1°
20
Cloudy
-4°
21
Overcast
-8°
22
Sunny
-7°
23
Overcast
-4°
24
Sunny
-1°
25
Overcast
-2°
26
Overcast
3°
27
Partly cloudy
2°
28
Cloudy
0°
29
Cloudy
6°
30
Partly cloudy
2°
31
Moderate rain
2°

Temperatures trend during January in Allentown

See the weather trend as well as the moving average line

January weather in Allentown day by day

Click on a date for more information
December February
Date Weather Temperatures Rain Snow More
Jan. 1 Overcast
Overcast
 2° /-2° 2.6 mm 0 cm
Jan. 2 Sunny
Sunny
 2° /-4° 0 mm 0 cm
Jan. 3 Overcast
Overcast
 0° /-5° 0 mm 0 cm
Jan. 4 Partly cloudy
Partly cloudy
 0° /-4° 0 mm 0 cm
Jan. 5 Overcast
Overcast
 1° /-6° 0 mm 0 cm
Jan. 6 Overcast
Overcast
 3° /-2° 0 mm 0 cm
Jan. 7 Fog
Fog
 7° /0° 0 mm 0 cm
Jan. 8 Partly cloudy
Partly cloudy
 10° /0° 0 mm 0 cm
Jan. 9 Patchy rain possible
Patchy rain possible
 8° /3° 1.1 mm 0 cm
Jan. 10 Patchy rain possible
Patchy rain possible
 16° /3° 0.2 mm 0 cm
Jan. 11 Partly cloudy
Partly cloudy
 3° /-2° 0 mm 0 cm
Jan. 12 Partly cloudy
Partly cloudy
 4° /-4° 0 mm 0 cm
Jan. 13 Partly cloudy
Partly cloudy
 6° /-2° 0 mm 0 cm
Jan. 14 Cloudy
Cloudy
 4° /-5° 0 mm 0 cm
Jan. 15 Partly cloudy
Partly cloudy
 1° /-5° 0 mm 0 cm
Jan. 16 Partly cloudy
Partly cloudy
 6° /-4° 0 mm 0 cm
Jan. 17 Overcast
Overcast
 10° /-1° 0 mm 0 cm
Jan. 18 Sunny
Sunny
 4° /-3° 0 mm 0 cm
Jan. 19 Moderate or heavy snow showers
Moderate or heavy snow showers
 1° /-5° 7.7 mm 4.4 cm
Jan. 20 Cloudy
Cloudy
 -4° /-11° 0 mm 0 cm
Jan. 21 Overcast
Overcast
 -8° /-15° 0 mm 0 cm
Jan. 22 Sunny
Sunny
 -7° /-17° 0 mm 0 cm
Jan. 23 Overcast
Overcast
 -4° /-12° 0 mm 0 cm
Jan. 24 Sunny
Sunny
 -1° /-10° 0 mm 0 cm
Jan. 25 Overcast
Overcast
 -2° /-11° 0 mm 0 cm
Jan. 26 Overcast
Overcast
 3° /-5° 0 mm 0 cm
Jan. 27 Partly cloudy
Partly cloudy
 2° /-8° 0 mm 0 cm
Jan. 28 Cloudy
Cloudy
 0° /-3° 0 mm 0 cm
Jan. 29 Cloudy
Cloudy
 6° /-2° 0 mm 0 cm
Jan. 30 Partly cloudy
Partly cloudy
 2° /-6° 0 mm 0 cm
Jan. 31 Moderate rain
Moderate rain
 2° /-1° 12.1 mm 0 cm
Next
Important Notice
Our weather forecast for Allentown in January is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Allentown forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Allentown in January - FAQ

What are the expected maximum and minimum temperatures in Allentown during January?
Brace for cold days with temperatures not exceeding 0° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Allentown during January?
In January, Allentown can expect light to moderate rainfall, totaling 32.8 mm across approximately 2 days. Occasional showers are possible, and planning ahead for them could be helpful.
Will it snow in Allentown in January 2026?
Allentown experiences an average snowfall of 7.11 cm during January, occurring over 3 days.
What are the typical wind conditions in Allentown during January?
The average wind speed in Allentown during January is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

Allentown snow forecast January 2026

Track daily snowfall levels and discover Allentown’s snowy potential this January ❄️
On average, Allentown sees 3 snowy days during January, with approximately 7.1 cm of total snowfall.

January rainfall patterns in Allentown

Explore the daily rainfall trends and prepare for Allentowns January weather 💧
Typically, Allentown has 2 rainy days in January with a total of 32.8 mm of rainfall.

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Location coordinates Where is Allentown?

Get accurate weather forecasts for Allentown, located at latitude 40.608 and longitude -75.49. Stay updated with localized weather information tailored for Allentown.

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