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January Weather in Altoona, United States

Last updated: June 24, 2025

In January, the average temperature in Altoona, United States hovers around -8°C (17°F), with extremes ranging from a chilling -33°C (-26°F) to a milder 8°C (46°F). Expect a modest precipitation of 33 mm (1.3 in) over approximately 6 days, coupled with high humidity levels at 88%, creating a truly frosty atmosphere.

January Temperature in Altoona

In January in Altoona, the average temperature is -8°C (17°F). The maximum can reach 8°C (46°F), while the minimum can be as low as -33°C (-26°F). Travelers should be well-prepared for extreme cold conditions during this time.

January Weather in Altoona: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Altoona, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Altoona, January typically has an average temperature of -8°C (17°F), with highs reaching up to 8°C (46°F) and lows dropping to around -33°C (-26°F).
JanFebMarAprMayJunJulAugSepOctNovDec171833435870736963483324
Data source: Temperature data for Altoona generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Altoona

In Altoona, in January, the precipitation amount is 33 mm (1.3 in) over the course of 6 days.

January Precipitation Trends in Altoona

The chart displays monthly precipitation patterns in Altoona, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Altoona, January typically receives around 33 mm (1.3 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec33485595130132117127961115151
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Altoona

In Altoona in January humidity is 88%. With an average temperature of -8°C (17°F), this humidity feels like a biting chill, making travel uncomfortable and prompting the need for extra layers to ward off the damp cold that seeps into your bones.

January Average Humidity in Altoona

This chart illustrates the average monthly humidity levels in Altoona, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Altoona is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%89%86%85%79%80%80%78%80%84%89%85%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Altoona

In Altoona in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Altoona, you can visit Hourly UV Index in Altoona.

Maximum UV Index Levels in Altoona for January

The chart shows the monthly maximum UV Index (UVI) for Altoona in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Altoona typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458810997532
Data source: Altoona January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How January Weather in Altoona Compares to Other Months

Weather in Altoona varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Altoona, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Altoona, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (17°F)33 mm (1.3 inches)88%low
February Weather-8°C (18°F)48 mm (1.9 inches)89%moderate
March Weather1°C (34°F)55 mm (2.2 inches)86%moderate
April Weather6°C (44°F)95 mm (3.7 inches)85%very high
May Weather15°C (59°F)130 mm (5.1 inches)79%very high
June Weather21°C (70°F)132 mm (5.2 inches)80%very high
July Weather23°C (73°F)117 mm (4.6 inches)80%very high
August Weather21°C (70°F)127 mm (5.0 inches)78%very high
September Weather17°C (63°F)96 mm (3.8 inches)80%high
October Weather9°C (48°F)111 mm (4.4 inches)84%moderate
November Weather1°C (34°F)51 mm (2.0 inches)89%moderate
December Weather-4°C (24°F)51 mm (2.0 inches)85%low

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