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January Weather in Harvey, United States

Last updated: June 24, 2025

In January, the average temperature in Harvey, United States is a chilling -11°C (12°F), with extremes ranging from a frigid -38°C (-36°F) to a milder 6°C (43°F). Expect about 15 mm (0.6 in) of precipitation over 4 days, and be prepared for high humidity levels, averaging 84%.

January Temperature in Harvey

In January in Harvey, the average temperature is -11°C (12°F), with a maximum that can reach 6°C (43°F) and a minimum that can drop as low as -38°C (-36°F). It's advisable to prepare for very cold conditions and dress warmly if you plan to 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 -11°C (12°F), with highs reaching up to 6°C (43°F) and lows dropping to around -38°C (-36°F).
JanFebMarAprMayJunJulAugSepOctNovDec11826385567716859432818
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 15 mm (0.6 in) occurring over the course of 4 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 15 mm (0.6 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec151925304173717058592327
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 84%. With an average temperature of -11°C (12°F), this humidity feels like a heavy, frosty blanket that clings to your skin, making every breath feel chilled and every step a bit more laborious, which can be quite challenging for travelers.

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 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%88%78%75%76%79%78%78%69%71%82%84%
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.
JanFebMarAprMayJunJulAugSepOctNovDec2459910987532
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-11°C (12°F)15 mm (0.6 inches)84%low
February Weather-13°C (9°F)19 mm (0.7 inches)88%moderate
March Weather-3°C (27°F)25 mm (1.0 inches)78%moderate
April Weather3°C (38°F)30 mm (1.2 inches)75%very high
May Weather13°C (55°F)41 mm (1.6 inches)76%very high
June Weather20°C (68°F)72 mm (2.9 inches)79%very high
July Weather22°C (71°F)71 mm (2.8 inches)78%very high
August Weather20°C (68°F)70 mm (2.7 inches)78%very high
September Weather15°C (59°F)58 mm (2.3 inches)69%high
October Weather6°C (43°F)59 mm (2.3 inches)71%moderate
November Weather-2°C (28°F)23 mm (0.9 inches)82%moderate
December Weather-8°C (18°F)27 mm (1.1 inches)84%low

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