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April Weather in Ottumwa, United States

Last updated: June 24, 2025

In April, the average temperature in Ottumwa, United States hovers around 10°C (51°F), but be prepared for a wide range, with minimums dipping to -10°C (15°F) and maximums soaring to 30°C (86°F). Expect about 77 mm (3.0 in) of precipitation over 10 days, and keep in mind the average humidity sits at a notable 77%, making the air feel quite moist. Enjoy your stay!

April Temperature in Ottumwa

In April in Ottumwa, the average temperature is 10°C (51°F). Maximums can reach up to 30°C (86°F), while minimums can drop as low as -10°C (15°F). This temperature variability means travelers should be prepared for both warm and chilly conditions during their visit.

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

The chart illustrates April temperature patterns in Ottumwa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ottumwa, April typically has an average temperature of 10°C (51°F), with highs reaching up to 30°C (86°F) and lows dropping to around -10°C (15°F).
JanFebMarAprMayJunJulAugSepOctNovDec242641506375787569544033
Data source: Temperature data for Ottumwa 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 Ottumwa

In Ottumwa in April, the total precipitation amount is 77 mm (3.0 in) spread over a duration of 10 days.

April Precipitation Trends in Ottumwa

The chart displays monthly precipitation patterns in Ottumwa, 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 Ottumwa, April typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec5050937715113774751291255340
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Ottumwa

In Ottumwa in April humidity is 77%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill that can make outdoor activities somewhat uncomfortable, causing clothes to cling to your skin and breathing to feel heavier, which may deter longer sightseeing adventures.

April Average Humidity in Ottumwa

This chart illustrates the average monthly humidity levels in Ottumwa, 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 Ottumwa is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%80%77%78%77%81%81%77%73%75%85%83%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Ottumwa

In Ottumwa 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 Ottumwa.

Maximum UV Index Levels in Ottumwa for April

The chart shows the monthly maximum UV Index (UVI) for Ottumwa 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 Ottumwa typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35689111098643
Data source: Ottumwa 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 Ottumwa Compares to Other Months

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

This table compares monthly weather conditions in Ottumwa, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (24°F)50 mm (2.0 inches)78%moderate
February Weather-3°C (27°F)50 mm (2.0 inches)80%moderate
March Weather5°C (41°F)93 mm (3.7 inches)77%high
April Weather10°C (51°F)77 mm (3.0 inches)77%very high
May Weather17°C (64°F)151 mm (5.9 inches)77%very high
June Weather24°C (75°F)137 mm (5.4 inches)81%extreme
July Weather25°C (78°F)74 mm (2.9 inches)81%very high
August Weather24°C (75°F)75 mm (3.0 inches)77%very high
September Weather21°C (69°F)129 mm (5.1 inches)73%very high
October Weather12°C (54°F)125 mm (4.9 inches)75%high
November Weather4°C (40°F)53 mm (2.1 inches)85%moderate
December Weather0°C (33°F)40 mm (1.6 inches)83%moderate

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