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January Weather in West Yarmouth, United States

Last updated: June 24, 2025

In January, the average temperature in West Yarmouth, United States hovers around 2°C (36°F). Expect chilly days, with minimum temperatures plunging to -14°C (6°F) and peaking at a maximum of 13°C (55°F). Be prepared for moderate precipitation, averaging 94 mm (3.7 in) over 10 days, and a notably high humidity level of 84%.

January Temperature in West Yarmouth

In January in West Yarmouth, the average temperature is 2°C (36°F). The maximum can reach 13°C (55°F), and the minimum can be as low as -14°C (6°F). Travelers should be prepared for a wide temperature range and dress in layers to stay comfortable during their visit.

January Weather in West Yarmouth: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in West Yarmouth, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In West Yarmouth, January typically has an average temperature of 2°C (36°F), with highs reaching up to 13°C (55°F) and lows dropping to around -14°C (6°F).
JanFebMarAprMayJunJulAugSepOctNovDec353638455363707266594839
Data source: Temperature data for West Yarmouth 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 West Yarmouth

In West Yarmouth in January, the precipitation amount is 94 mm (3.7 in) over a duration of 10 days.

January Precipitation Trends in West Yarmouth

The chart displays monthly precipitation patterns in West Yarmouth, 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 West Yarmouth, January typically receives around 94 mm (3.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec94123118137119918382118175102136
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in West Yarmouth

In West Yarmouth in January, humidity is 84%. With an average temperature of 2°C (36°F), this humidity feels like a cold, damp blanket wrapping around you, making outdoor activities less inviting and requiring extra layers to stay comfortable while traveling.

January Average Humidity in West Yarmouth

This chart illustrates the average monthly humidity levels in West Yarmouth, 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 West Yarmouth is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%82%79%75%78%76%76%76%75%80%80%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in West Yarmouth

In West Yarmouth in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in West Yarmouth, you can check the information here.

Maximum UV Index Levels in West Yarmouth for January

The chart shows the monthly maximum UV Index (UVI) for West Yarmouth 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 West Yarmouth typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468910998642
Data source: West Yarmouth 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 West Yarmouth Compares to Other Months

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

This table compares monthly weather conditions in West Yarmouth, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)94 mm (3.7 inches)84%moderate
February Weather2°C (36°F)123 mm (4.8 inches)84%moderate
March Weather3°C (38°F)118 mm (4.7 inches)82%high
April Weather7°C (46°F)137 mm (5.4 inches)79%very high
May Weather12°C (53°F)119 mm (4.7 inches)75%very high
June Weather17°C (63°F)91 mm (3.6 inches)78%very high
July Weather21°C (71°F)83 mm (3.3 inches)76%very high
August Weather22°C (72°F)82 mm (3.2 inches)76%very high
September Weather19°C (67°F)118 mm (4.7 inches)75%very high
October Weather15°C (59°F)175 mm (6.9 inches)75%high
November Weather9°C (48°F)102 mm (4.0 inches)80%moderate
December Weather4°C (40°F)136 mm (5.4 inches)80%low

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