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January Weather in East Alton, United States

Last updated: June 24, 2025

In January, the average temperature in East Alton, United States hovers around 0°C (32°F). While the conditions can be chilly, the minimum may dip to a frigid -23°C (-8°F), and the maximum can reach a mild 19°C (66°F). Expect 75 mm (3.0 in) of precipitation spread over about 8 days, and prepare for a notably high average humidity of 82%, adding to the overall atmosphere of this intriguing season.

January Temperature in East Alton

In January in East Alton, the average temperature is 0°C (32°F), with maximums reaching up to 19°C (66°F) and minimums plummeting as low as -23°C (-8°F). Be prepared for a wide range of temperatures when traveling to East Alton during this time.

January Weather in East Alton: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in East Alton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In East Alton, January typically has an average temperature of 0°C (32°F), with highs reaching up to 19°C (66°F) and lows dropping to around -23°C (-8°F).
JanFebMarAprMayJunJulAugSepOctNovDec313446546776797672594338
Data source: Temperature data for East Alton 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 East Alton

In East Alton in January, the total precipitation amount is 75 mm (3.0 in) over the course of 8 days.

January Precipitation Trends in East Alton

The chart displays monthly precipitation patterns in East Alton, 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 East Alton, January typically receives around 75 mm (3.0 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec7580133132156111100120641037557
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in East Alton

In East Alton in January, humidity is 82%. With an average temperature of 0°C (32°F), this humidity feels like an icy breath enveloping you, making each step outdoors a challenge as the cold dampness seeps into your clothes, chilling you to the bone and sapping your energy while traveling.

January Average Humidity in East Alton

This chart illustrates the average monthly humidity levels in East Alton, 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 East Alton is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%80%82%83%81%80%76%76%85%86%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in East Alton

In East Alton 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 East Alton, you can check the information here.

Maximum UV Index Levels in East Alton for January

The chart shows the monthly maximum UV Index (UVI) for East Alton 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 East Alton typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111199643
Data source: East Alton 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 East Alton Compares to Other Months

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

This table compares monthly weather conditions in East Alton, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)75 mm (3.0 inches)82%moderate
February Weather1°C (35°F)80 mm (3.1 inches)80%moderate
March Weather8°C (46°F)133 mm (5.2 inches)80%high
April Weather12°C (55°F)132 mm (5.2 inches)80%very high
May Weather19°C (67°F)156 mm (6.1 inches)82%very high
June Weather25°C (77°F)111 mm (4.4 inches)83%extreme
July Weather26°C (79°F)100 mm (3.9 inches)81%extreme
August Weather24°C (76°F)120 mm (4.7 inches)80%very high
September Weather22°C (72°F)64 mm (2.5 inches)76%very high
October Weather15°C (59°F)102 mm (4.0 inches)76%high
November Weather6°C (44°F)75 mm (2.9 inches)85%moderate
December Weather3°C (38°F)57 mm (2.2 inches)86%moderate

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