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April Weather in Lake Ketchum, United States

Last updated: June 24, 2025

In April, the average temperature in Lake Ketchum, United States hovers around 9°C (49°F), with a chilly minimum of -1°C (31°F) and a warm maximum reaching 24°C (76°F). Expect 145 mm (5.7 in) of precipitation spread over 16 days, and prepare for high humidity averaging 86%—making it a rather damp month overall!

April Temperature in Lake Ketchum

In April in Lake Ketchum, the average temperature is 9°C (49°F). The maximum can reach 24°C (76°F), and the minimum can be as low as -1°C (31°F). Be sure to pack layers to accommodate the varying temperatures during your travels.

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

The chart illustrates April temperature patterns in Lake Ketchum, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lake Ketchum, April typically has an average temperature of 9°C (49°F), with highs reaching up to 24°C (76°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec403844495560646459494439
Data source: Temperature data for Lake Ketchum 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.

April Precipitation in Lake Ketchum

In Lake Ketchum in April, the precipitation amount is 145 mm (5.7 in) spread over 16 days, indicating a moderately wet period for the region.

April Precipitation Trends in Lake Ketchum

The chart displays monthly precipitation patterns in Lake 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 Lake Ketchum, April typically receives around 145 mm (5.7 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec21722217914583752226127204274255
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Lake Ketchum

In Lake Ketchum in April, humidity is 86%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill in the air, making travel uncomfortable as the moisture clings to your skin and thickens the atmosphere, creating a sense of heaviness that can tire you quickly.

April Average Humidity in Lake Ketchum

This chart illustrates the average monthly humidity levels in Lake 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 Lake Ketchum is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%88%86%82%82%85%77%76%88%88%89%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Lake Ketchum

In Lake Ketchum in April, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Lake Ketchum, you can refer to this Hourly UV Index in Lake Ketchum.

Maximum UV Index Levels in Lake Ketchum for April

The chart shows the monthly maximum UV Index (UVI) for Lake 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 Lake Ketchum typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987522
Data source: Lake 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 Lake Ketchum Compares to Other Months

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

This table compares monthly weather conditions in Lake Ketchum, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (40°F)217 mm (8.5 inches)87%low
February Weather4°C (39°F)222 mm (8.7 inches)86%moderate
March Weather6°C (44°F)179 mm (7.0 inches)88%moderate
April Weather9°C (49°F)145 mm (5.7 inches)86%high
May Weather13°C (55°F)83 mm (3.3 inches)82%very high
June Weather15°C (60°F)75 mm (2.9 inches)82%very high
July Weather18°C (64°F)22 mm (0.9 inches)85%very high
August Weather18°C (65°F)26 mm (1.0 inches)77%very high
September Weather15°C (60°F)127 mm (5.0 inches)76%high
October Weather10°C (50°F)204 mm (8.0 inches)88%moderate
November Weather7°C (45°F)274 mm (10.8 inches)88%low
December Weather4°C (40°F)255 mm (10.0 inches)89%low

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