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January Weather in Gresham, United States

Last updated: June 24, 2025

In January, the average temperature in Gresham, United States hovers around -7°C (19°F), with extremes ranging from a chilling -30°C (-23°F) to a milder 8°C (47°F). Expect about 37 mm (1.5 in) of precipitation spread across 6 days, contributing to an average humidity of 89% that adds to the wintery ambiance of the season.

January Temperature in Gresham

In January in Gresham, the average temperature is -7°C (19°F). The maximum can reach 8°C (47°F), and the minimum can be as low as -30°C (-23°F). It's advisable to pack warm clothing and prepare for potential extreme cold if you plan to travel during this time.

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

The chart illustrates January temperature patterns in Gresham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gresham, January typically has an average temperature of -7°C (19°F), with highs reaching up to 8°C (47°F) and lows dropping to around -30°C (-23°F).
JanFebMarAprMayJunJulAugSepOctNovDec191932425768726862483425
Data source: Temperature data for Gresham 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 Gresham

In Gresham in January, the precipitation amount is 37 mm (1.5 in) over the course of 6 days.

January Precipitation Trends in Gresham

The chart displays monthly precipitation patterns in Gresham, 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 Gresham, January typically receives around 37 mm (1.5 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec374959101106107111115771005055
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Gresham

In Gresham in January humidity is 89%. With an average temperature of -7°C (19°F), this humidity feels like an icy mist clinging to your skin, making travel uncomfortable as each breath brings in a sharp chill that bites through layers of clothing.

January Average Humidity in Gresham

This chart illustrates the average monthly humidity levels in Gresham, 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 Gresham is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%90%87%84%77%75%75%73%78%84%89%87%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Gresham

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

Maximum UV Index Levels in Gresham for January

The chart shows the monthly maximum UV Index (UVI) for Gresham 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 Gresham typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: Gresham 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 Gresham Compares to Other Months

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

This table compares monthly weather conditions in Gresham, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (19°F)37 mm (1.5 inches)89%low
February Weather-7°C (19°F)49 mm (1.9 inches)90%moderate
March Weather0°C (32°F)59 mm (2.3 inches)87%moderate
April Weather6°C (43°F)101 mm (4.0 inches)84%high
May Weather14°C (57°F)106 mm (4.2 inches)77%very high
June Weather20°C (68°F)107 mm (4.2 inches)75%very high
July Weather22°C (72°F)111 mm (4.4 inches)74%very high
August Weather20°C (69°F)115 mm (4.5 inches)73%very high
September Weather16°C (62°F)77 mm (3.0 inches)78%high
October Weather9°C (49°F)100 mm (3.9 inches)84%moderate
November Weather1°C (34°F)50 mm (2.0 inches)89%moderate
December Weather-4°C (25°F)55 mm (2.2 inches)87%low

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