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April Weather in Nampa, United States

Last updated: June 24, 2025

In Nampa, United States, the average temperature in April hovers around 12°C (54°F). However, be prepared for a range, as temperatures can dip to a brisk -3°C (28°F) or soar to a warm 32°C (91°F). Expect 34 mm (1.3 in) of precipitation over approximately 6 days, and a notable average humidity of 79% adds to the overall experience of the month.

April Temperature in Nampa

In April in Nampa, the average temperature is 12°C (54°F), with maximums reaching 32°C (91°F) and minimums dropping as low as -3°C (28°F). This variability in temperature makes it essential for travelers to pack layers to ensure comfort during their visit.

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

The chart illustrates April temperature patterns in Nampa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nampa, April typically has an average temperature of 12°C (54°F), with highs reaching up to 32°C (91°F) and lows dropping to around -3°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec343747536272817968534335
Data source: Temperature data for Nampa 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 Nampa

In Nampa in April, the total precipitation amount is 34 mm (1.3 in) spread over 6 days.

April Precipitation Trends in Nampa

The chart displays monthly precipitation patterns in Nampa, 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 Nampa, April typically receives around 34 mm (1.3 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec4341343435192710212936
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Nampa

In Nampa in April, humidity is 79%. With an average temperature of 12°C (54°F), this humidity makes traveling feel quite muggy, leading to a sticky discomfort that can sap your energy and make outdoor activities less enjoyable.

April Average Humidity in Nampa

This chart illustrates the average monthly humidity levels in Nampa, 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 Nampa 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 Nampa

In Nampa 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 Nampa.

Maximum UV Index Levels in Nampa for April

The chart shows the monthly maximum UV Index (UVI) for Nampa 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 Nampa typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810111198642
Data source: Nampa 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 Nampa Compares to Other Months

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

This table compares monthly weather conditions in Nampa, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)43 mm (1.7 inches)88%moderate
February Weather3°C (37°F)41 mm (1.6 inches)89%moderate
March Weather8°C (47°F)34 mm (1.3 inches)85%high
April Weather12°C (54°F)34 mm (1.3 inches)79%very high
May Weather16°C (62°F)35 mm (1.4 inches)71%very high
June Weather22°C (72°F)19 mm (0.7 inches)71%extreme
July Weather27°C (82°F)1 mm (0.1 inches)66%extreme
August Weather26°C (79°F)7 mm (0.3 inches)50%very high
September Weather20°C (68°F)10 mm (0.4 inches)48%very high
October Weather12°C (53°F)21 mm (0.8 inches)65%high
November Weather6°C (43°F)29 mm (1.1 inches)84%moderate
December Weather2°C (35°F)35 mm (1.4 inches)87%low

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