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January Weather in Sidney, United States

Last updated: June 24, 2025

In January, the average temperature in Sidney, United States hovers around -4°C (25°F), with a minimum dropping to an icy -28°C (-18°F) and a maximum reaching a mild 17°C (62°F). Expect to encounter 79 mm (3.1 in) of precipitation spread over 12 days, contributing to an average humidity of 90%. Stay prepared for chilly and damp conditions!

January Temperature in Sidney

In January in Sidney, the average temperature is -4°C (25°F), with maximums reaching 17°C (62°F) and minimums dipping as low as -28°C (-18°F). Travelers should be prepared for a significant temperature range and pack accordingly for both warmth and cooler conditions.

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

The chart illustrates January temperature patterns in Sidney, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sidney, January typically has an average temperature of -4°C (25°F), with highs reaching up to 17°C (62°F) and lows dropping to around -28°C (-18°F).
JanFebMarAprMayJunJulAugSepOctNovDec252834465766716963533830
Data source: Temperature data for Sidney 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 Sidney

In Sidney in January, the precipitation amount is 79 mm (3.1 in) over a period of 12 days.

January Precipitation Trends in Sidney

The chart displays monthly precipitation patterns in Sidney, 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 Sidney, January typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec79939012212811313411910214810194
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Sidney

In Sidney in January humidity is 90%. With an average temperature of -4°C (25°F), this humidity feels like a dense, icy blanket wrapping around you, making travel feel particularly stifling in the cold despite the sub-zero temperatures.

January Average Humidity in Sidney

This chart illustrates the average monthly humidity levels in Sidney, 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 Sidney is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Sidney

In Sidney 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 Sidney, you can check the information here.

Maximum UV Index Levels in Sidney for January

The chart shows the monthly maximum UV Index (UVI) for Sidney 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 Sidney typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346910101098642
Data source: Sidney 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 Sidney Compares to Other Months

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

This table compares monthly weather conditions in Sidney, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)79 mm (3.1 inches)90%moderate
February Weather-2°C (28°F)93 mm (3.7 inches)90%moderate
March Weather1°C (34°F)90 mm (3.6 inches)87%high
April Weather8°C (46°F)122 mm (4.8 inches)88%very high
May Weather14°C (58°F)128 mm (5.0 inches)82%very high
June Weather19°C (66°F)113 mm (4.4 inches)79%very high
July Weather22°C (71°F)134 mm (5.3 inches)78%very high
August Weather21°C (69°F)119 mm (4.7 inches)76%very high
September Weather17°C (63°F)102 mm (4.0 inches)78%very high
October Weather11°C (53°F)148 mm (5.8 inches)84%high
November Weather3°C (38°F)101 mm (4.0 inches)89%moderate
December Weather-1°C (31°F)93 mm (3.7 inches)86%low

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