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April Weather in Tri-City, United States

Last updated: June 24, 2025

In April, the average temperature in Tri-City, United States hovers around 10°C (49°F), with minimums dipping to -4°C (25°F) and maximums soaring up to 26°C (80°F). The region experiences 112 mm (4.4 in) of precipitation over approximately 13 days, contributing to an average humidity of 83%.

April Temperature in Tri-City

In April in Tri-City, the average temperature is 10°C (49°F). Maximum temperatures can reach 26°C (80°F), while minimum temperatures can drop as low as -4°C (25°F). Travelers should be prepared for a range of weather conditions, from mild days to chilly nights.

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

The chart illustrates April temperature patterns in Tri-City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tri-City, April typically has an average temperature of 10°C (49°F), with highs reaching up to 26°C (80°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec404044495562686862524539
Data source: Temperature data for Tri-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 Tri-City

In Tri-City in April, the precipitation amount is 112 mm (4.4 in) over the course of 13 days.

April Precipitation Trends in Tri-City

The chart displays monthly precipitation patterns in Tri-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 Tri-City, April typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec1401751241126131286167107140
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Tri-City

In Tri-City in April humidity is 83%. With an average temperature of 10°C (49°F), this humidity feels like a damp chill enveloping you, making outdoor activities feel more uncomfortable and potentially dampening your travel experience.

April Average Humidity in Tri-City

This chart illustrates the average monthly humidity levels in Tri-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 Tri-City is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%86%83%83%83%78%67%66%77%87%87%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Tri-City

In Tri-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 Tri-City.

Maximum UV Index Levels in Tri-City for April

The chart shows the monthly maximum UV Index (UVI) for Tri-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 Tri-City typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346810101098632
Data source: Tri-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 Tri-City Compares to Other Months

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

This table compares monthly weather conditions in Tri-City, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (40°F)140 mm (5.5 inches)84%moderate
February Weather4°C (40°F)175 mm (6.9 inches)85%moderate
March Weather7°C (44°F)124 mm (4.9 inches)86%high
April Weather10°C (49°F)112 mm (4.4 inches)83%very high
May Weather13°C (55°F)61 mm (2.4 inches)83%very high
June Weather17°C (62°F)31 mm (1.2 inches)83%very high
July Weather20°C (68°F)2 mm (0.1 inches)78%very high
August Weather20°C (68°F)8 mm (0.3 inches)67%very high
September Weather17°C (62°F)61 mm (2.4 inches)66%very high
October Weather11°C (52°F)67 mm (2.6 inches)77%high
November Weather7°C (45°F)107 mm (4.2 inches)87%moderate
December Weather4°C (39°F)140 mm (5.5 inches)87%low

Compare Tri-City's Climate with Cities Worldwide