April Weather in Challis, United States

Last updated: June 24, 2025

In April, the average temperature in Challis, United States hovers around 0°C (33°F), with a minimum that can drop to -17°C (2°F) and a maximum reaching 15°C (59°F). Expect 49 mm (1.9 in) of precipitation spread over 12 days, contributing to a notably high average humidity of 87%. Prepare for a chilly and damp month!

April Temperature in Challis

In April in Challis, the average temperature is 0°C (33°F). Maximums can reach 15°C (59°F), while minimums can drop as low as -17°C (2°F). Be prepared for a wide range of temperatures and pack accordingly for your travels!

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

The chart illustrates April temperature patterns in Challis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Challis, April typically has an average temperature of 0°C (33°F), with highs reaching up to 15°C (59°F) and lows dropping to around -17°C (2°F).

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

April Precipitation in Challis

In Challis in April, the total precipitation amount is 49 mm (1.9 in) spread over 12 days.

April Precipitation Trends in Challis

The chart displays monthly precipitation patterns in Challis, 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 Challis, April typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 12 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 Challis

In Challis in April, humidity is 87%. With an average temperature of 0°C (33°F), this humidity feels like a damp chill that seeps into your bones, making every step feel heavier and the air thick and suffocating, often leading to a sense of discomfort while traveling.

April Average Humidity in Challis

This chart illustrates the average monthly humidity levels in Challis, 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 Challis is approximately 87%, 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 Challis

In Challis 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 Challis.

Maximum UV Index Levels in Challis for April

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

Data source: Challis 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 Challis Compares to Other Months

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

This table compares monthly weather conditions in Challis, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (16°F)	34 mm (1.3 inches)	94%	moderate
February Weather	-8°C (18°F)	65 mm (2.6 inches)	93%	moderate
March Weather	-3°C (27°F)	40 mm (1.6 inches)	91%	very high
April Weather	0°C (33°F)	49 mm (1.9 inches)	87%	very high
May Weather	6°C (44°F)	68 mm (2.7 inches)	83%	extreme
June Weather	13°C (55°F)	59 mm (2.3 inches)	80%	extreme
July Weather	18°C (65°F)	18 mm (0.7 inches)	75%	extreme
August Weather	17°C (63°F)	23 mm (0.9 inches)	66%	very high
September Weather	12°C (54°F)	30 mm (1.2 inches)	66%	very high
October Weather	3°C (37°F)	42 mm (1.7 inches)	77%	high
November Weather	-3°C (27°F)	34 mm (1.3 inches)	91%	moderate
December Weather	-9°C (16°F)	38 mm (1.5 inches)	96%	low