April Weather in Ketchum, United States

Last updated: June 24, 2025

In April, the average temperature in Ketchum, United States hovers around 0°C (31°F). Expect chilly conditions with minimums dipping to -16°C (3°F) and highs reaching up to 14°C (57°F). With an average humidity of 76%, don't be surprised if you feel a bit damp. Rain may make an appearance as well, with approximately 52 mm (2.0 in) of precipitation spread over 11 days.

April Temperature in Ketchum

In April in Ketchum, the average temperature is 0°C (31°F). Maximums can reach 14°C (57°F), and minimums can be as low as -16°C (3°F). Be prepared for a chilly adventure, as this month can bring a mix of cold and milder weather conditions perfect for winter activities.

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

The chart illustrates April temperature patterns in Ketchum, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ketchum, April typically has an average temperature of 0°C (31°F), with highs reaching up to 14°C (57°F) and lows dropping to around -16°C (3°F).

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

April Precipitation in Ketchum

In Ketchum in April, the total precipitation amount is 52 mm (2.0 in), occurring over the course of 11 days.

April Precipitation Trends in Ketchum

The chart displays monthly precipitation patterns in Ketchum, 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 Ketchum, April typically receives around 52 mm (2.0 inches) of precipitation spread over approximately 11 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

April Humidity in Ketchum

In Ketchum in April humidity is 76%. With an average temperature of 0°C (31°F), this humidity feels like a heavy cloak enveloping you, making every breath feel damp and chilly, which can make traveling uncomfortable and invigorating all at once.

April Average Humidity in Ketchum

This chart illustrates the average monthly humidity levels in Ketchum, 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 Ketchum is approximately 76%, 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 Ketchum

In Ketchum in April, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Ketchum.

Maximum UV Index Levels in Ketchum for April

The chart shows the monthly maximum UV Index (UVI) for Ketchum 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 Ketchum typically reaches 9, which falls under the very high exposure category.

Data source: Ketchum 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 Ketchum Compares to Other Months

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

This table compares monthly weather conditions in Ketchum, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (17°F)	56 mm (2.2 inches)	91%	moderate
February Weather	-8°C (18°F)	86 mm (3.4 inches)	92%	moderate
March Weather	-3°C (26°F)	60 mm (2.4 inches)	85%	very high
April Weather	0°C (31°F)	52 mm (2.0 inches)	76%	very high
May Weather	4°C (40°F)	61 mm (2.4 inches)	66%	extreme
June Weather	11°C (52°F)	46 mm (1.8 inches)	62%	extreme
July Weather	16°C (62°F)	15 mm (0.6 inches)	53%	extreme
August Weather	15°C (60°F)	33 mm (1.3 inches)	42%	very high
September Weather	10°C (51°F)	30 mm (1.2 inches)	46%	very high
October Weather	2°C (35°F)	42 mm (1.6 inches)	64%	high
November Weather	-4°C (26°F)	46 mm (1.8 inches)	83%	moderate
December Weather	-9°C (16°F)	49 mm (1.9 inches)	87%	moderate