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United States weather

Weather in Allegheny County, Pennsylvania for January 2027

Your guide to Allegheny County weather in January - trends and predictions

    Snow Forecast ❄️

  • Allegheny County typically experiences moderate snowfall in January, with an average of 6 snowy days.

    • Temperatures

  • In general, the average temperature in Allegheny County at the beginning of January is 3.1 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 0.8 °C by the end of January.

    • More

  • Is January a good time to visit Allegheny County? check out the best time to travel to Allegheny County page.

  • ✨ Is January a good time to visit Allegheny County? – Ask the AI Weatherman

Average dry days
18
Dry days
Average rainy days
7
Rainy days
Average snowy days
6
Snow days
Average temperatures
1°/-4°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
79 %
Avg humidity

Allegheny County Weather January

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

Temperatures trend during January in Allegheny County

See the weather trend as well as the moving average line

January weather in Allegheny County day by day

Click on a date for more information
December February
Date Weather Temperatures Rain Snow More
Jan. 1 Light rain
Light rain
 4° /-1° 3.2 mm 1.5 cm
Jan. 2 Overcast
Overcast
 3° /-1° 0.6 mm 0 cm
Jan. 3 Moderate or heavy rain shower
Moderate or heavy rain shower
 4° /0° 9.1 mm 0.2 cm
Jan. 4 Overcast
Overcast
 3° /-1° 0.8 mm 0.1 cm
Jan. 5 Overcast
Overcast
 4° /-3° 0 mm 0 cm
Jan. 6 Moderate rain
Moderate rain
 3° /-1° 14.6 mm 10.1 cm
Jan. 7 Light snow showers
Light snow showers
 1° /-2° 0.9 mm 0.7 cm
Jan. 8 Overcast
Overcast
 2° /-2° 0.4 mm 0.2 cm
Jan. 9 Light rain
Light rain
 5° /-1° 5.5 mm 0 cm
Jan. 10 Patchy rain possible
Patchy rain possible
 4° /-1° 1.8 mm 0.4 cm
Jan. 11 Light snow
Light snow
 4° /-2° 2.9 mm 1.5 cm
Jan. 12 Moderate rain
Moderate rain
 6° /-1° 10.7 mm 0 cm
Jan. 13 Overcast
Overcast
 4° /-2° 0.7 mm 0 cm
Jan. 14 Light snow
Light snow
 -1° /-6° 1.4 mm 0.1 cm
Jan. 15 Overcast
Overcast
 -3° /-8° 0 mm 0 cm
Jan. 16 Overcast
Overcast
 -1° /-7° 0.7 mm 0.6 cm
Jan. 17 Patchy rain possible
Patchy rain possible
 2° /-5° 2 mm 0 cm
Jan. 18 Light snow
Light snow
 1° /-3° 1.8 mm 1 cm
Jan. 19 Moderate or heavy rain shower
Moderate or heavy rain shower
 2° /-6° 7.3 mm 1.3 cm
Jan. 20 Patchy rain possible
Patchy rain possible
 -3° /-10° 0.5 mm 0.1 cm
Jan. 21 Light freezing rain
Light freezing rain
 -3° /-9° 1.3 mm 0.9 cm
Jan. 22 Light snow
Light snow
 -2° /-9° 1.5 mm 0 cm
Jan. 23 Light snow
Light snow
 -1° /-6° 1.3 mm 0 cm
Jan. 24 Light snow
Light snow
 -2° /-6° 2.9 mm 0 cm
Jan. 25 Moderate or heavy snow showers
Moderate or heavy snow showers
 2° /-4° 28 mm 15.7 cm
Jan. 26 Patchy rain possible
Patchy rain possible
 2° /-3° 1.7 mm 0.6 cm
Jan. 27 Overcast
Overcast
 0° /-6° 0.5 mm 0 cm
Jan. 28 Light snow
Light snow
 1° /-4° 6.4 mm 1 cm
Jan. 29 Light snow
Light snow
 0° /-4° 1 mm 0 cm
Jan. 30 Overcast
Overcast
 2° /-5° 0.9 mm 0.1 cm
Jan. 31 Light freezing rain
Light freezing rain
 1° /-5° 1.3 mm 0.1 cm
Next
Important Notice
Our weather forecast for Allegheny County 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 Allegheny County forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Allegheny County in January - FAQ

What are the expected maximum and minimum temperatures in Allegheny County during January?
Brace for cold days with temperatures not exceeding 1° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.

How much rainfall should be expected in Allegheny County during January?
Significant rainfall exceeding 111.6 mm is expected in Allegheny County during January, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.

Will it snow in Allegheny County in January 2027?
Allegheny County experiences an average snowfall of 36.3 cm during January, occurring over 6 days.

What are the typical wind conditions in Allegheny County during January?
The average wind speed in Allegheny County during January is 17 km/h, suggesting breezy to windy conditions, depending on your activities.

Allegheny County snow forecast January 2027

Track daily snowfall levels and discover Allegheny County’s snowy potential this January ❄️
On average, Allegheny County sees 6 snowy days during January, with approximately 36.3 cm of total snowfall.

January rainfall patterns in Allegheny County

Explore the daily rainfall trends and prepare for Allegheny Countys January weather 💧
Typically, Allegheny County has 7 rainy days in January with a total of 111.6 mm of rainfall.
Top locations in Allegheny County
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Pittsburgh
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