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March Weather in Collinsville, United States

Last updated: June 24, 2025

In March, the average temperature in Collinsville, United States hovers around 15°C (59°F). Expect a minimum of -7°C (20°F) and a maximum of 31°C (88°F), showcasing a significant temperature range. During this month, anticipate 115 mm (4.5 in) of precipitation spread over about 10 days, with an average humidity level of 78%. Get ready for a blend of cool and warm days, along with occasional rain!

March Temperature in Collinsville

In March in Collinsville, the average temperature is 15°C (59°F). The maximum can reach 31°C (88°F), and the minimum can be as low as -7°C (20°F). This diverse temperature range makes Collinsville an exciting destination for travelers seeking both warm days and chilly evenings.

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

The chart illustrates March 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, March typically has an average temperature of 15°C (59°F), with highs reaching up to 31°C (88°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec454758637380848378665550
Data source: Temperature data for Collinsville 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.

March Precipitation in Collinsville

In Collinsville in March, the precipitation amount is 115 mm (4.5 in) over a span of 10 days.

March Precipitation Trends in Collinsville

The chart displays monthly precipitation patterns in Collinsville, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Collinsville, March typically receives around 115 mm (4.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec578811510613910548941211435359
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Collinsville

In Collinsville in March, humidity is 78%. With an average temperature of 15°C (59°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities a bit more tiring and requiring frequent breaks for hydration as you explore the area.

March Average Humidity in Collinsville

This chart illustrates the average monthly humidity levels in Collinsville, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Collinsville is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%78%78%81%78%73%66%65%72%82%87%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Collinsville

In Collinsville in March, 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 Collinsville.

Maximum UV Index Levels in Collinsville for March

The chart shows the monthly maximum UV Index (UVI) for Collinsville in March, 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 March, the maximum UV index in Collinsville typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110864
Data source: Collinsville March 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 March 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 March’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 March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)57 mm (2.2 inches)80%moderate
February Weather8°C (47°F)88 mm (3.5 inches)79%high
March Weather15°C (59°F)115 mm (4.5 inches)78%very high
April Weather17°C (64°F)106 mm (4.2 inches)78%very high
May Weather23°C (73°F)138 mm (5.5 inches)81%extreme
June Weather27°C (81°F)105 mm (4.1 inches)78%extreme
July Weather29°C (84°F)47 mm (1.9 inches)73%extreme
August Weather29°C (84°F)94 mm (3.7 inches)66%extreme
September Weather25°C (78°F)121 mm (4.7 inches)65%very high
October Weather19°C (66°F)143 mm (5.6 inches)72%very high
November Weather13°C (55°F)53 mm (2.1 inches)82%high
December Weather10°C (50°F)59 mm (2.3 inches)87%moderate

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