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April Weather in San Joaquin, United States

Last updated: June 24, 2025

In April, the average temperature in San Joaquin, United States is a pleasant 19°C (66°F). However, be prepared for fluctuations, as temperatures can dip to a chilly 5°C (41°F) and soar up to a sweltering 36°C (97°F). During this month, expect about 25 mm (1.0 in) of precipitation spread over approximately 5 days, with an average humidity level of around 78%.

April Temperature in San Joaquin

In April in San Joaquin, the average temperature is 19°C (66°F). Maximums can reach 36°C (97°F) and minimums can be as low as 5°C (41°F). This diverse temperature range makes San Joaquin an ideal destination for travelers seeking both warmth and cooler relief.

April Weather in San Joaquin: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in San Joaquin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Joaquin, April typically has an average temperature of 19°C (66°F), with highs reaching up to 36°C (97°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec515458667282888679685850
Data source: Temperature data for San Joaquin 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 San Joaquin

In San Joaquin in April, the total precipitation amount is 25 mm (1.0 in) over a span of 5 days.

April Precipitation Trends in San Joaquin

The chart displays monthly precipitation patterns in San Joaquin, 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 San Joaquin, April typically receives around 25 mm (1.0 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec6047652517201192249
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in San Joaquin

In San Joaquin in April, humidity is 78%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making traveling quite uncomfortable unless you're well-prepared with lightweight, breathable clothing and frequent breaks to stay hydrated.

April Average Humidity in San Joaquin

This chart illustrates the average monthly humidity levels in San Joaquin, 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 San Joaquin is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%84%82%78%71%64%59%54%55%62%78%80%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in San Joaquin

In San Joaquin in April, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in San Joaquin.

Maximum UV Index Levels in San Joaquin for April

The chart shows the monthly maximum UV Index (UVI) for San Joaquin 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 San Joaquin typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec4589111211119753
Data source: San Joaquin 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 San Joaquin Compares to Other Months

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

This table compares monthly weather conditions in San Joaquin, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (51°F)60 mm (2.4 inches)82%moderate
February Weather12°C (54°F)47 mm (1.9 inches)84%moderate
March Weather14°C (58°F)65 mm (2.5 inches)82%very high
April Weather19°C (66°F)25 mm (1.0 inches)78%very high
May Weather22°C (73°F)17 mm (0.7 inches)71%extreme
June Weather28°C (82°F)2 mm (0.1 inches)64%extreme
July Weather31°C (88°F)0 mm (0.0 inches)58%extreme
August Weather30°C (86°F)1 mm (0.0 inches)54%extreme
September Weather26°C (80°F)1 mm (0.0 inches)55%very high
October Weather20°C (68°F)9 mm (0.4 inches)62%high
November Weather14°C (58°F)22 mm (0.9 inches)78%moderate
December Weather10°C (51°F)49 mm (1.9 inches)80%moderate

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