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April Weather in Williams, United States

Last updated: June 24, 2025

In April, the average temperature in Williams, United States hovers around 9°C (49°F), presenting a pleasant climate with a minimum of -2°C (28°F) and a maximum reaching up to 27°C (80°F). Expect some rain, as precipitation averages 91 mm (3.6 in) over 11 days, contributing to a notable average humidity of 83%. Prepare accordingly to enjoy all that this season has to offer!

April Temperature in Williams

In April in Williams, the average temperature is 9°C (49°F). Maximum temperatures can reach 27°C (80°F), while minimums can dip as low as -2°C (28°F). It's a season of contrasts, so be prepared for both warm and chilly moments during your travels!

April Weather in Williams: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Williams, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Williams, April typically has an average temperature of 9°C (49°F), with highs reaching up to 27°C (80°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec393943495664717163534438
Data source: Temperature data for Williams 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.

April Precipitation in Williams

In Williams in April, the precipitation amount is 91 mm (3.6 in) over a period of 11 days.

April Precipitation Trends in Williams

The chart displays monthly precipitation patterns in Williams, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Williams, April typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec15015511291582136334297121
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Williams

In Williams in April, humidity is 83%. With an average temperature of 9°C (49°F), this humidity feels like a damp blanket wrapping around you, making outdoor activities uncomfortable for traveling and requiring extra layers to stay warm and dry.

April Average Humidity in Williams

This chart illustrates the average monthly humidity levels in Williams, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Williams is approximately 83%, 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 April generated using information from the Copernicus Climate Change Service.

April UV Index in Williams

In Williams in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Williams.

Maximum UV Index Levels in Williams for April

The chart shows the monthly maximum UV Index (UVI) for Williams in April, 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 April, the maximum UV index in Williams typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468101110108642
Data source: Williams April 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 April Weather in Williams Compares to Other Months

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

This table compares monthly weather conditions in Williams, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)150 mm (5.9 inches)84%moderate
February Weather4°C (40°F)155 mm (6.1 inches)85%moderate
March Weather6°C (44°F)112 mm (4.4 inches)86%high
April Weather9°C (49°F)91 mm (3.6 inches)83%very high
May Weather13°C (56°F)57 mm (2.3 inches)83%very high
June Weather18°C (64°F)21 mm (0.8 inches)83%extreme
July Weather22°C (71°F)3 mm (0.1 inches)78%very high
August Weather21°C (71°F)6 mm (0.3 inches)67%very high
September Weather17°C (63°F)33 mm (1.3 inches)66%very high
October Weather11°C (53°F)42 mm (1.6 inches)77%high
November Weather7°C (44°F)96 mm (3.8 inches)87%moderate
December Weather3°C (38°F)121 mm (4.8 inches)87%low

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