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April Weather in Idaho City, United States

Last updated: June 24, 2025

In Idaho City, United States, the average temperature in April hovers around 4°C (40°F). Expect chilly lows of -11°C (13°F), while sunny days can reach a pleasant 23°C (73°F). Prepare for some rain, as the area sees an average precipitation of 79 mm (3.1 in) over 12 days, accompanied by a relatively high humidity of 79%.

April Temperature in Idaho City

In April in Idaho City, the average temperature is 4°C (40°F), with maximums reaching 23°C (73°F) and minimums dropping as low as -11°C (13°F). This varying climate makes it essential for travelers to pack both warm and light clothing to comfortably enjoy their visit.

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

The chart illustrates April temperature patterns in Idaho City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Idaho City, April typically has an average temperature of 4°C (40°F), with highs reaching up to 23°C (73°F) and lows dropping to around -11°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec252635404959706858433325
Data source: Temperature data for Idaho City 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 City

In Idaho City in April, the precipitation amount is 79 mm (3.1 in) over a period of 12 days.

April Precipitation Trends in Idaho City

The chart displays monthly precipitation patterns in Idaho City, 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 City, April typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec981269079684752131517785
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Idaho City

In Idaho City in April, humidity is 79%. With an average temperature of 4°C (40°F), this humidity feels like a chilly dampness that wraps around you, making outdoor activities uncomfortable and leaving you longing for warmth as your breath hangs in the air.

April Average Humidity in Idaho City

This chart illustrates the average monthly humidity levels in Idaho City, 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 City is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%89%85%79%71%71%66%50%48%65%84%87%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Idaho City

In Idaho City 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 City.

Maximum UV Index Levels in Idaho City for April

The chart shows the monthly maximum UV Index (UVI) for Idaho City 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 City typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3578111111109642
Data source: Idaho City 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 City Compares to Other Months

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

This table compares monthly weather conditions in Idaho City, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)98 mm (3.9 inches)88%moderate
February Weather-3°C (26°F)126 mm (5.0 inches)89%moderate
March Weather1°C (35°F)90 mm (3.6 inches)85%high
April Weather4°C (40°F)79 mm (3.1 inches)79%very high
May Weather9°C (49°F)68 mm (2.7 inches)71%extreme
June Weather15°C (60°F)47 mm (1.8 inches)71%extreme
July Weather21°C (70°F)5 mm (0.2 inches)66%extreme
August Weather20°C (68°F)20 mm (0.8 inches)50%very high
September Weather14°C (58°F)31 mm (1.2 inches)48%very high
October Weather6°C (43°F)51 mm (2.0 inches)65%high
November Weather1°C (33°F)77 mm (3.0 inches)84%moderate
December Weather-4°C (25°F)85 mm (3.4 inches)87%low

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