April Weather in Campbell, United States

Last updated: June 24, 2025

In April, the average temperature in Campbell, United States hovers around 18°C (64°F), offering a pleasant climate for outdoor activities. However, be prepared for temperature fluctuations, as the minimum can plummet to 0°C (33°F), while the maximum may soar up to 33°C (91°F). Expect 189 mm (7.4 in) of precipitation spread over 10 days, making it a great idea to carry an umbrella. With an average humidity of 78%, the atmosphere can feel quite muggy, so plan your wardrobe accordingly!

April Temperature in Campbell

In April in Campbell, the average temperature is 18°C (64°F), with maximums reaching 33°C (91°F) and minimums dropping as low as 0°C (33°F). This wide temperature range makes it essential for travelers to pack layers to ensure comfort throughout their stay.

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

The chart illustrates April temperature patterns in Campbell, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Campbell, April typically has an average temperature of 18°C (64°F), with highs reaching up to 33°C (91°F) and lows dropping to around 0°C (33°F).

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

April Precipitation in Campbell

In Campbell in April, the total precipitation amount is 189 mm (7.4 in) spread over a duration of 10 days.

April Precipitation Trends in Campbell

The chart displays monthly precipitation patterns in Campbell, 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 Campbell, April typically receives around 189 mm (7.4 inches) of precipitation spread over approximately 10 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 Campbell

In Campbell in April, humidity is 78%. With an average temperature of 18°C (64°F), this humidity feels like a warm, thick blanket wrapping around you, making traveling feel a bit sticky and sluggish, yet the coolness of the air tempers the intensity, inviting you to explore at a leisurely pace.

April Average Humidity in Campbell

This chart illustrates the average monthly humidity levels in Campbell, 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 Campbell is approximately 78%, 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 Campbell

In Campbell in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Campbell.

Maximum UV Index Levels in Campbell for April

The chart shows the monthly maximum UV Index (UVI) for Campbell 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 Campbell typically reaches 10, which falls under the very high exposure category.

Data source: Campbell 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 Campbell Compares to Other Months

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

This table compares monthly weather conditions in Campbell, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	81 mm (3.2 inches)	80%	moderate
February Weather	9°C (48°F)	122 mm (4.8 inches)	79%	high
March Weather	15°C (59°F)	130 mm (5.1 inches)	78%	very high
April Weather	18°C (64°F)	189 mm (7.4 inches)	78%	very high
May Weather	23°C (73°F)	181 mm (7.1 inches)	81%	extreme
June Weather	27°C (81°F)	104 mm (4.1 inches)	78%	extreme
July Weather	29°C (84°F)	58 mm (2.3 inches)	73%	extreme
August Weather	29°C (84°F)	94 mm (3.7 inches)	66%	extreme
September Weather	26°C (79°F)	83 mm (3.3 inches)	65%	very high
October Weather	19°C (67°F)	143 mm (5.6 inches)	72%	very high
November Weather	13°C (56°F)	60 mm (2.3 inches)	82%	high
December Weather	10°C (51°F)	85 mm (3.4 inches)	87%	moderate