nomadseason

April Weather in Collinsville, United States

Last updated: June 24, 2025

In April, the average temperature in Collinsville, United States hovers around 16°C (62°F). Temperatures can vary significantly, dipping as low as 0°C (33°F) and soaring up to 30°C (87°F). This month also brings an average precipitation of 152 mm (6.0 in) over 9 days, contributing to a high average humidity of 82%.

April Temperature in Collinsville

In April in Collinsville, the average temperature is 16°C (62°F). Maximums can reach 30°C (87°F) and minimums can be as low as 0°C (33°F). This variation makes it advisable to pack layers and be prepared for both warm and cool weather during your travels.

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

The chart illustrates April temperature patterns in Collinsville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Collinsville, April typically has an average temperature of 16°C (62°F), with highs reaching up to 30°C (87°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec445056627176807975665147
Data source: Temperature data for Collinsville generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Collinsville

In Collinsville in April, the precipitation amount is 152 mm (6.0 in) distributed over 9 days.

April Precipitation Trends in Collinsville

The chart displays monthly precipitation patterns in Collinsville, 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 Collinsville, April typically receives around 152 mm (6.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec12219517415210515010613410913286159
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

April Humidity in Collinsville

In Collinsville in April, humidity is 82%. With an average temperature of 16°C (62°F), this humidity feels like a blanket of warmth enveloping you, making traveling feel sticky and heavy as you navigate through the air.

April Average Humidity in Collinsville

This chart illustrates the average monthly humidity levels in Collinsville, 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 Collinsville is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%85%82%83%82%78%67%64%75%87%89%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Collinsville

In Collinsville 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 Collinsville.

Maximum UV Index Levels in Collinsville for April

The chart shows the monthly maximum UV Index (UVI) for Collinsville 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 Collinsville typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111119864
Data source: Collinsville 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 Collinsville Compares to Other Months

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

This table compares monthly weather conditions in Collinsville, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)122 mm (4.8 inches)87%moderate
February Weather10°C (50°F)195 mm (7.7 inches)87%high
March Weather13°C (56°F)174 mm (6.9 inches)85%very high
April Weather16°C (62°F)152 mm (6.0 inches)82%very high
May Weather22°C (71°F)105 mm (4.1 inches)83%extreme
June Weather25°C (76°F)150 mm (5.9 inches)82%extreme
July Weather26°C (80°F)105 mm (4.2 inches)78%extreme
August Weather26°C (79°F)134 mm (5.3 inches)67%extreme
September Weather24°C (75°F)109 mm (4.3 inches)64%very high
October Weather19°C (66°F)132 mm (5.2 inches)74%very high
November Weather11°C (52°F)86 mm (3.4 inches)87%high
December Weather9°C (48°F)159 mm (6.3 inches)88%moderate

Compare Collinsville's Climate with Cities Worldwide