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April Weather in Flat River, United States

Last updated: June 24, 2025

In April, the average temperature in Flat River, United States hovers around 13°C (55°F). Expect a wide temperature range, with minimums plummeting to -4°C (25°F) and maximums soaring to 30°C (87°F). This month brings 171 mm (6.7 in) of rainfall over approximately 14 days, contributing to an average humidity level of 80%. Prepare for a mix of conditions as you explore!

April Temperature in Flat River

In April in Flat River, the average temperature is 13°C (55°F). The maximum can reach 30°C (87°F) and the minimum can be as low as -4°C (25°F). Be prepared for a range of temperatures, making it wise to pack both warm and lightweight clothing for your travels.

April Weather in Flat River: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Flat River, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Flat River, April typically has an average temperature of 13°C (55°F), with highs reaching up to 30°C (87°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec343747556675797571594440
Data source: Temperature data for Flat River 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 Flat River

In Flat River in April, the precipitation amount is 171 mm (6.7 in) over the course of 14 days.

April Precipitation Trends in Flat River

The chart displays monthly precipitation patterns in Flat River, 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 Flat River, April typically receives around 171 mm (6.7 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec801001341711519088119661157570
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Flat River

In Flat River in April humidity is 80%. With an average temperature of 13°C (55°F), this humidity feels like a damp blanket wrapping around you, making any outdoor activity feel stifling and heavy, which can lead to fatigue for travelers unaccustomed to such moist conditions.

April Average Humidity in Flat River

This chart illustrates the average monthly humidity levels in Flat River, 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 Flat River is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%81%80%80%83%83%76%69%68%72%83%87%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Flat River

In Flat River 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 Flat River.

Maximum UV Index Levels in Flat River for April

The chart shows the monthly maximum UV Index (UVI) for Flat River 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 Flat River typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679111111109753
Data source: Flat River 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 Flat River Compares to Other Months

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

This table compares monthly weather conditions in Flat River, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)80 mm (3.2 inches)83%moderate
February Weather3°C (37°F)100 mm (3.9 inches)81%high
March Weather9°C (48°F)134 mm (5.3 inches)80%high
April Weather13°C (55°F)171 mm (6.7 inches)80%very high
May Weather19°C (66°F)150 mm (5.9 inches)83%extreme
June Weather24°C (75°F)90 mm (3.5 inches)83%extreme
July Weather26°C (79°F)87 mm (3.4 inches)76%extreme
August Weather24°C (76°F)119 mm (4.7 inches)69%very high
September Weather22°C (71°F)66 mm (2.6 inches)68%very high
October Weather15°C (59°F)115 mm (4.5 inches)72%high
November Weather7°C (45°F)75 mm (3.0 inches)83%moderate
December Weather4°C (40°F)70 mm (2.8 inches)86%moderate

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