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January Weather in Coos Bay, United States

Last updated: June 24, 2025

In January, the average temperature in Coos Bay, United States hovers around 8°C (47°F). Temperatures can dip as low as -1°C (30°F) or rise to a pleasant 16°C (62°F). Expect a fair amount of rain, with 192 mm (7.6 in) of precipitation spread over 17 days. The air is notably humid, with an average humidity of 84%.

January Temperature in Coos Bay

In January in Coos Bay, the average temperature is 8°C (47°F). The maximum can reach 16°C (62°F), while the minimum can be as low as -1°C (30°F). Be prepared for varying weather conditions when traveling to Coos Bay during this month.

January Weather in Coos Bay: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Coos Bay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Coos Bay, January typically has an average temperature of 8°C (47°F), with highs reaching up to 16°C (62°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec474547505458606160555047
Data source: Temperature data for Coos Bay 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 Coos Bay

In Coos Bay in January, the total precipitation amount is 192 mm (7.6 in) over the course of 17 days.

January Precipitation Trends in Coos Bay

The chart displays monthly precipitation patterns in Coos Bay, 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 Coos Bay, January typically receives around 192 mm (7.6 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec1922201491185937364870150204
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Coos Bay

In Coos Bay in January, humidity is 84%. With an average temperature of 8°C (47°F), this humidity feels like a damp blanket wrapping around you, making travel feel heavy and a bit lethargic, as the air thickens with moisture and each step becomes a little more cumbersome.

January Average Humidity in Coos Bay

This chart illustrates the average monthly humidity levels in Coos Bay, 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 Coos Bay is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%86%83%83%83%78%67%66%77%87%87%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Coos Bay

In Coos Bay 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 Coos Bay, you can visit Hourly UV Index in Coos Bay.

Maximum UV Index Levels in Coos Bay for January

The chart shows the monthly maximum UV Index (UVI) for Coos Bay 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 Coos Bay typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec246710101098532
Data source: Coos Bay 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 Coos Bay Compares to Other Months

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

This table compares monthly weather conditions in Coos Bay, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)192 mm (7.6 inches)84%low
February Weather7°C (46°F)220 mm (8.7 inches)85%moderate
March Weather8°C (47°F)149 mm (5.9 inches)86%high
April Weather10°C (50°F)118 mm (4.6 inches)83%high
May Weather12°C (54°F)59 mm (2.3 inches)83%very high
June Weather14°C (58°F)37 mm (1.4 inches)83%very high
July Weather16°C (60°F)3 mm (0.1 inches)78%very high
August Weather16°C (61°F)6 mm (0.2 inches)67%very high
September Weather15°C (60°F)48 mm (1.9 inches)66%very high
October Weather13°C (55°F)70 mm (2.7 inches)77%moderate
November Weather10°C (51°F)150 mm (5.9 inches)87%moderate
December Weather8°C (47°F)204 mm (8.0 inches)87%low

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