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January Weather in Harvey, United States

Last updated: June 24, 2025

In January, the average temperature in Harvey, United States hovers around -6°C (21°F), with extremes ranging from a frosty -23°C (-8°F) to a milder 5°C (41°F). Expect a damp atmosphere, as the region experiences about 47 mm (1.8 in) of precipitation over 12 days. With an average humidity level of 92%, it's a time when the chill feels even more pronounced.

January Temperature in Harvey

In January in Harvey, the average temperature is -6°C (21°F). Maximums can reach 5°C (41°F) and minimums can be as low as -23°C (-8°F). Travelers should come prepared for cold weather and dress in layers to stay warm during their visit.

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

The chart illustrates January temperature patterns in Harvey, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harvey, January typically has an average temperature of -6°C (21°F), with highs reaching up to 5°C (41°F) and lows dropping to around -23°C (-8°F).
JanFebMarAprMayJunJulAugSepOctNovDec201928354757666559483426
Data source: Temperature data for Harvey 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 Harvey

In Harvey in January, the precipitation amount is 47 mm (1.8 in) over a period of 12 days.

January Precipitation Trends in Harvey

The chart displays monthly precipitation patterns in Harvey, 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 Harvey, January typically receives around 47 mm (1.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec4762599473977899991287968
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Harvey

In Harvey in January humidity is 92%. With an average temperature of -6°C (21°F), this humidity feels like an icy blanket that clings to your skin, making the cold air feel even more biting and heavy, which can be quite challenging for traveling.

January Average Humidity in Harvey

This chart illustrates the average monthly humidity levels in Harvey, 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 Harvey is approximately 92%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%93%88%86%77%74%71%72%76%83%86%90%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Harvey

In Harvey 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 Harvey, you can visit Hourly UV Index in Harvey.

Maximum UV Index Levels in Harvey for January

The chart shows the monthly maximum UV Index (UVI) for Harvey 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 Harvey typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245789987532
Data source: Harvey 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 Harvey Compares to Other Months

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

This table compares monthly weather conditions in Harvey, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)47 mm (1.8 inches)92%low
February Weather-7°C (19°F)62 mm (2.4 inches)92%moderate
March Weather-2°C (28°F)59 mm (2.3 inches)88%moderate
April Weather2°C (36°F)94 mm (3.7 inches)86%high
May Weather8°C (47°F)73 mm (2.9 inches)77%very high
June Weather14°C (57°F)97 mm (3.8 inches)74%very high
July Weather19°C (66°F)78 mm (3.1 inches)71%very high
August Weather18°C (65°F)99 mm (3.9 inches)72%very high
September Weather15°C (60°F)98 mm (3.9 inches)75%high
October Weather9°C (48°F)128 mm (5.0 inches)83%moderate
November Weather1°C (35°F)79 mm (3.1 inches)86%moderate
December Weather-3°C (26°F)68 mm (2.7 inches)90%low

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