April Weather in Ukiah, United States

Last updated: June 24, 2025

In April, the average temperature in Ukiah, United States hovers around 12°C (53°F), but be prepared for a range that can dip as low as -2°C (29°F) or climb to a warm 30°C (86°F). Expect 79 mm (3.1 in) of precipitation spread across approximately 8 days, contributing to an average humidity level of 80%.

April Temperature in Ukiah

In April in Ukiah, the average temperature is 12°C (53°F), with maximums reaching up to 30°C (86°F) and minimums dipping as low as -2°C (29°F). Travelers should be prepared for a range of temperatures, making it essential to pack layers for both warm and cold conditions.

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

The chart illustrates April temperature patterns in Ukiah, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ukiah, April typically has an average temperature of 12°C (53°F), with highs reaching up to 30°C (86°F) and lows dropping to around -2°C (29°F).

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

April Precipitation in Ukiah

In Ukiah in April, the precipitation amount is 79 mm (3.1 in) during 8 days, indicating a relatively wet period for the area.

April Precipitation Trends in Ukiah

The chart displays monthly precipitation patterns in Ukiah, 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 Ukiah, April typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

April Humidity in Ukiah

In Ukiah in April humidity is 80%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill clinging to your skin, making outdoor activities less inviting and prompting the need for layered clothing to stay comfortable while traveling.

April Average Humidity in Ukiah

This chart illustrates the average monthly humidity levels in Ukiah, 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 Ukiah is approximately 80%, 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 Ukiah

In Ukiah 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 Ukiah.

Maximum UV Index Levels in Ukiah for April

The chart shows the monthly maximum UV Index (UVI) for Ukiah 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 Ukiah typically reaches 8, which falls under the very high exposure category.

Data source: Ukiah 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 Ukiah Compares to Other Months

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

This table compares monthly weather conditions in Ukiah, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	172 mm (6.8 inches)	86%	moderate
February Weather	8°C (46°F)	170 mm (6.7 inches)	84%	moderate
March Weather	9°C (48°F)	135 mm (5.3 inches)	83%	high
April Weather	12°C (53°F)	79 mm (3.1 inches)	80%	very high
May Weather	15°C (58°F)	54 mm (2.1 inches)	80%	extreme
June Weather	19°C (67°F)	3 mm (0.1 inches)	76%	extreme
July Weather	22°C (72°F)	1 mm (0.0 inches)	70%	extreme
August Weather	22°C (72°F)	1 mm (0.1 inches)	66%	very high
September Weather	19°C (67°F)	7 mm (0.3 inches)	68%	very high
October Weather	15°C (59°F)	54 mm (2.1 inches)	72%	high
November Weather	10°C (50°F)	92 mm (3.6 inches)	84%	moderate
December Weather	7°C (45°F)	115 mm (4.5 inches)	84%	moderate