April Weather in Lanark, United States

Last updated: June 24, 2025

In April, the average temperature in Lanark, United States is a cool 9°C (48°F), with fluctuations ranging from a chilly -8°C (18°F) to a warm 28°C (82°F). Expect 108 mm (4.2 in) of precipitation spread over 12 days, accompanied by an average humidity of 85%.

April Temperature in Lanark

In April in Lanark, the average temperature is 9°C (48°F). Maximum temperatures can reach 28°C (82°F), while minimums can drop to as low as -8°C (18°F). Travelers should be prepared for a wide range of weather conditions when visiting during this time.

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

The chart illustrates April temperature patterns in Lanark, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lanark, April typically has an average temperature of 9°C (48°F), with highs reaching up to 28°C (82°F) and lows dropping to around -8°C (18°F).

Data source: Temperature data for Lanark generated using information from the Copernicus Climate Change Service.

April Precipitation in Lanark

In Lanark in April, the total precipitation amount is 108 mm (4.2 in) spread over 12 days.

April Precipitation Trends in Lanark

The chart displays monthly precipitation patterns in Lanark, 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 Lanark, April typically receives around 108 mm (4.2 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

April Humidity in Lanark

In Lanark in April humidity is 85%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill enveloping you, making outdoor activities less enjoyable and requiring extra layers to stay warm and comfortable while traveling.

April Average Humidity in Lanark

This chart illustrates the average monthly humidity levels in Lanark, 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 Lanark is approximately 85%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Lanark

In Lanark 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 Lanark.

Maximum UV Index Levels in Lanark for April

The chart shows the monthly maximum UV Index (UVI) for Lanark 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 Lanark typically reaches 8, which falls under the very high exposure category.

Data source: Lanark 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 Lanark Compares to Other Months

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

This table compares monthly weather conditions in Lanark, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	59 mm (2.3 inches)	82%	moderate
February Weather	-4°C (25°F)	59 mm (2.3 inches)	83%	moderate
March Weather	4°C (39°F)	82 mm (3.2 inches)	84%	high
April Weather	9°C (48°F)	108 mm (4.2 inches)	85%	very high
May Weather	16°C (61°F)	148 mm (5.8 inches)	79%	very high
June Weather	22°C (72°F)	129 mm (5.1 inches)	82%	very high
July Weather	24°C (76°F)	89 mm (3.5 inches)	80%	very high
August Weather	22°C (73°F)	82 mm (3.2 inches)	81%	very high
September Weather	20°C (67°F)	119 mm (4.7 inches)	80%	very high
October Weather	12°C (53°F)	113 mm (4.4 inches)	82%	high
November Weather	3°C (38°F)	49 mm (1.9 inches)	88%	moderate
December Weather	0°C (32°F)	51 mm (2.0 inches)	84%	low