March Weather in Ottumwa, United States

Last updated: June 24, 2025

In March, the average temperature in Ottumwa, United States hovers around 5°C (41°F). Expect a chilly atmosphere where temperatures can dip as low as -19°C (-3°F) and rise to a pleasant 23°C (74°F). With an average humidity of 77%, the month brings 93 mm (3.7 in) of precipitation over approximately 11 days. Dress accordingly to embrace both the brisk and mild moments!

March Temperature in Ottumwa

In March in Ottumwa, the average temperature is a cool 5°C (41°F). During this time, temperatures can rise to a maximum of 23°C (74°F) and plummet to a minimum of -19°C (-3°F). Be prepared for a wide range of weather conditions, making it essential to pack layers for your trip.

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

The chart illustrates March 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, March typically has an average temperature of 5°C (41°F), with highs reaching up to 23°C (74°F) and lows dropping to around -19°C (-3°F).

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

March Precipitation in Ottumwa

In Ottumwa in March, the precipitation amount is 93 mm (3.7 in) over the course of 11 days, indicating that rain is expected to be fairly frequent during that time.

March Precipitation Trends in Ottumwa

The chart displays monthly precipitation patterns in Ottumwa, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Ottumwa, March typically receives around 93 mm (3.7 inches) of precipitation spread over approximately 11 days.

Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

March Humidity in Ottumwa

In Ottumwa in March humidity is 77%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making traveling quite uncomfortable unless you're bundled up in warm layers.

March Average Humidity in Ottumwa

This chart illustrates the average monthly humidity levels in Ottumwa, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Ottumwa is approximately 77%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Ottumwa

In Ottumwa in March, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Ottumwa, you can refer to this Hourly UV Index in Ottumwa.

Maximum UV Index Levels in Ottumwa for March

The chart shows the monthly maximum UV Index (UVI) for Ottumwa in March, 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 March, the maximum UV index in Ottumwa typically reaches 6, which falls under the high exposure category.

Data source: Ottumwa March 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 March 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 March’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 March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
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 Weather	5°C (41°F)	93 mm (3.7 inches)	77%	high
April Weather	10°C (51°F)	77 mm (3.0 inches)	77%	very high
May Weather	17°C (64°F)	151 mm (5.9 inches)	77%	very high
June Weather	24°C (75°F)	137 mm (5.4 inches)	81%	extreme
July Weather	25°C (78°F)	74 mm (2.9 inches)	81%	very high
August Weather	24°C (75°F)	75 mm (3.0 inches)	77%	very high
September Weather	21°C (69°F)	129 mm (5.1 inches)	73%	very high
October Weather	12°C (54°F)	125 mm (4.9 inches)	75%	high
November Weather	4°C (40°F)	53 mm (2.1 inches)	85%	moderate
December Weather	0°C (33°F)	40 mm (1.6 inches)	83%	moderate