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April Weather in Hartley, United States

Last updated: June 24, 2025

In Hartley, United States, the average temperature in April hovers around 13°C (56°F). While temperatures can dip as low as -6°C (21°F), they can also soar up to 32°C (89°F). Expect 37 mm (1.5 in) of precipitation over approximately 4 days, contributing to an average humidity of 61%.

April Temperature in Hartley

In April in Hartley, the average temperature is 13°C (56°F). The maximum can reach 32°C (89°F) and the minimum can be as low as -6°C (21°F). This diverse range of temperatures makes it essential for travelers to pack layers to ensure comfort in varying weather conditions.

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

The chart illustrates April temperature patterns in Hartley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hartley, April typically has an average temperature of 13°C (56°F), with highs reaching up to 32°C (89°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec373849556676797771574739
Data source: Temperature data for Hartley 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 Hartley

In Hartley in April, the precipitation amount is 37 mm (1.5 in) over the course of 4 days.

April Precipitation Trends in Hartley

The chart displays monthly precipitation patterns in Hartley, 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 Hartley, April typically receives around 37 mm (1.5 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec151039375943295431501214
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Hartley

In Hartley in April humidity is 61%. With an average temperature of 13°C (56°F), this humidity feels like an uncomfortable blanket surrounding you, making outdoor activities slightly sticky and the air a bit heavier, which might dampen the joy of exploring for travelers.

April Average Humidity in Hartley

This chart illustrates the average monthly humidity levels in Hartley, 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 Hartley is approximately 61%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%75%61%62%69%74%75%78%76%76%80%77%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Hartley

In Hartley in April, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Hartley.

Maximum UV Index Levels in Hartley for April

The chart shows the monthly maximum UV Index (UVI) for Hartley 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 Hartley typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468111112121110754
Data source: Hartley 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 Hartley Compares to Other Months

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

This table compares monthly weather conditions in Hartley, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)15 mm (0.6 inches)74%moderate
February Weather3°C (39°F)10 mm (0.4 inches)75%high
March Weather10°C (50°F)39 mm (1.5 inches)61%very high
April Weather13°C (56°F)37 mm (1.5 inches)61%extreme
May Weather19°C (66°F)58 mm (2.3 inches)69%extreme
June Weather24°C (76°F)43 mm (1.7 inches)74%extreme
July Weather26°C (79°F)29 mm (1.1 inches)75%extreme
August Weather25°C (77°F)54 mm (2.1 inches)78%extreme
September Weather22°C (71°F)31 mm (1.2 inches)76%very high
October Weather14°C (57°F)50 mm (2.0 inches)76%high
November Weather8°C (47°F)11 mm (0.5 inches)80%moderate
December Weather4°C (40°F)14 mm (0.6 inches)77%moderate

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