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April Weather in Idaho Falls, United States

Last updated: June 24, 2025

In April, the average temperature in Idaho Falls, United States hovers around 7°C (45°F). While you may experience chilly lows of -9°C (17°F), sunny days can bring warmth up to a pleasant 25°C (78°F). Expect to see about 55 mm (2.2 in) of precipitation over 12 days, with an average humidity level of 81%, creating a cool and potentially damp atmosphere.

April Temperature in Idaho Falls

In April in Idaho Falls, the average temperature is 7°C (45°F), with maximum temperatures reaching up to 25°C (78°F) and minimums dropping as low as -9°C (17°F). Be prepared for a wide range of temperatures and pack accordingly for your trip!

April Weather in Idaho Falls: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Idaho Falls, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Idaho Falls, April typically has an average temperature of 7°C (45°F), with highs reaching up to 25°C (78°F) and lows dropping to around -9°C (17°F).
JanFebMarAprMayJunJulAugSepOctNovDec242737455464737161453526
Data source: Temperature data for Idaho Falls 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 Idaho Falls

In Idaho Falls in April, the total precipitation amount is 55 mm (2.2 in) over a span of 12 days.

April Precipitation Trends in Idaho Falls

The chart displays monthly precipitation patterns in Idaho Falls, 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 Idaho Falls, April typically receives around 55 mm (2.2 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec404843555831111627393241
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Idaho Falls

In Idaho Falls in April, humidity is 81%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill wrapping around you, making outdoor adventures slightly uncomfortable and requiring extra layers to stay warm while exploring.

April Average Humidity in Idaho Falls

This chart illustrates the average monthly humidity levels in Idaho Falls, 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 Idaho Falls is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%95%90%81%71%64%59%49%52%69%86%91%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Idaho Falls

In Idaho Falls 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 Idaho Falls.

Maximum UV Index Levels in Idaho Falls for April

The chart shows the monthly maximum UV Index (UVI) for Idaho Falls 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 Idaho Falls typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3578101111109643
Data source: Idaho Falls 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 Idaho Falls Compares to Other Months

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

This table compares monthly weather conditions in Idaho Falls, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)40 mm (1.6 inches)95%moderate
February Weather-3°C (27°F)48 mm (1.9 inches)95%moderate
March Weather3°C (37°F)43 mm (1.7 inches)90%high
April Weather7°C (45°F)55 mm (2.2 inches)81%very high
May Weather12°C (54°F)58 mm (2.3 inches)71%very high
June Weather18°C (65°F)31 mm (1.2 inches)64%extreme
July Weather23°C (74°F)11 mm (0.4 inches)59%extreme
August Weather21°C (71°F)16 mm (0.6 inches)49%very high
September Weather16°C (61°F)26 mm (1.0 inches)52%very high
October Weather7°C (45°F)39 mm (1.5 inches)69%high
November Weather2°C (36°F)32 mm (1.3 inches)86%moderate
December Weather-4°C (26°F)41 mm (1.6 inches)91%moderate

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