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April Weather in Rockford, United States

Last updated: June 24, 2025

In April, the average temperature in Rockford, United States is a comfortable 18°C (64°F). However, be prepared for a wide range, as temperatures can dip to a chilly 1°C (35°F) and soar up to a balmy 31°C (87°F). Expect some rain during your stay, with an average precipitation of 142 mm (5.6 in) across about 8 days. Plus, the average humidity hovers around a high 82%, adding to the local climate's character.

April Temperature in Rockford

In April in Rockford, the average temperature is 18°C (64°F). Maximums can reach 31°C (87°F) and minimums can be as low as 1°C (35°F). This is an ideal time to visit Rockford, as you can enjoy pleasant days while being prepared for cooler evenings.

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

The chart illustrates April temperature patterns in Rockford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rockford, April typically has an average temperature of 18°C (64°F), with highs reaching up to 31°C (87°F) and lows dropping to around 1°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec485459647277808077685450
Data source: Temperature data for Rockford 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 Rockford

In Rockford in April, the precipitation amount is 142 mm (5.6 in) over the course of 8 days.

April Precipitation Trends in Rockford

The chart displays monthly precipitation patterns in Rockford, 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 Rockford, April typically receives around 142 mm (5.6 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec1131561291421261501101208811983140
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Rockford

In Rockford in April humidity is 82%. With an average temperature of 18°C (64°F), this humidity feels like a warm, muggy embrace that can make exploring the area feel stifling, leaving travelers drenched in sweat and longing for respite in the shade.

April Average Humidity in Rockford

This chart illustrates the average monthly humidity levels in Rockford, 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 Rockford is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%81%77%77%72%73%73%85%88%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Rockford

In Rockford in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Rockford.

Maximum UV Index Levels in Rockford for April

The chart shows the monthly maximum UV Index (UVI) for Rockford 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 Rockford typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111119764
Data source: Rockford 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 Rockford Compares to Other Months

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

This table compares monthly weather conditions in Rockford, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (48°F)113 mm (4.5 inches)85%moderate
February Weather12°C (54°F)156 mm (6.1 inches)84%high
March Weather15°C (59°F)129 mm (5.1 inches)82%very high
April Weather18°C (64°F)142 mm (5.6 inches)82%very high
May Weather22°C (73°F)126 mm (5.0 inches)81%extreme
June Weather25°C (78°F)150 mm (5.9 inches)77%extreme
July Weather27°C (81°F)110 mm (4.3 inches)77%extreme
August Weather27°C (80°F)120 mm (4.7 inches)72%extreme
September Weather25°C (77°F)88 mm (3.5 inches)73%very high
October Weather20°C (69°F)119 mm (4.7 inches)73%high
November Weather12°C (55°F)83 mm (3.3 inches)85%high
December Weather10°C (51°F)140 mm (5.5 inches)88%moderate

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