April Weather in Stillwater, United States

Last updated: June 24, 2025

In Stillwater, United States, the average temperature in April hovers around 6°C (43°F), making it a chilly yet invigorating time of year. Temperatures can swing dramatically, with minimums dipping as low as -15°C (5°F) and soaring to a balmy 28°C (82°F). Expect 87 mm (3.4 in) of precipitation over 10 days, contributing to an average humidity of 84%—perfect for cozy indoor activities or exploring the scenic outdoors!

April Temperature in Stillwater

In April in Stillwater, the average temperature is 6°C (43°F). Maximums can reach 28°C (82°F), and minimums can be as low as -15°C (5°F). Be prepared for a wide range of temperatures if you're planning to travel during this time.

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

The chart illustrates April temperature patterns in Stillwater, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stillwater, April typically has an average temperature of 6°C (43°F), with highs reaching up to 28°C (82°F) and lows dropping to around -15°C (5°F).

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

April Precipitation in Stillwater

In Stillwater in April, the precipitation amount is 87 mm (3.4 in) over the course of 10 days.

April Precipitation Trends in Stillwater

The chart displays monthly precipitation patterns in Stillwater, 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 Stillwater, April typically receives around 87 mm (3.4 inches) of precipitation spread over approximately 10 days.

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

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Millimeters (mm) Inches (in)

April Humidity in Stillwater

In Stillwater in April, humidity is 84%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that penetrates your clothing, making outdoor excursions uncomfortable and prompting travelers to seek refuge indoors or find warm, sheltered spots to enjoy their surroundings.

April Average Humidity in Stillwater

This chart illustrates the average monthly humidity levels in Stillwater, 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 Stillwater is approximately 84%, offering insight into how humid the weather typically is during this month.

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

April UV Index in Stillwater

In Stillwater in April, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Stillwater.

Maximum UV Index Levels in Stillwater for April

The chart shows the monthly maximum UV Index (UVI) for Stillwater 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 Stillwater typically reaches 7, which falls under the high exposure category.

Data source: Stillwater 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 Stillwater Compares to Other Months

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

This table compares monthly weather conditions in Stillwater, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (17°F)	29 mm (1.1 inches)	87%	low
February Weather	-8°C (17°F)	38 mm (1.5 inches)	90%	moderate
March Weather	0°C (33°F)	56 mm (2.2 inches)	85%	moderate
April Weather	6°C (43°F)	87 mm (3.4 inches)	84%	high
May Weather	15°C (59°F)	134 mm (5.3 inches)	78%	very high
June Weather	21°C (71°F)	103 mm (4.1 inches)	80%	very high
July Weather	23°C (74°F)	104 mm (4.1 inches)	81%	very high
August Weather	21°C (70°F)	122 mm (4.8 inches)	81%	very high
September Weather	18°C (64°F)	110 mm (4.3 inches)	81%	high
October Weather	9°C (48°F)	102 mm (4.0 inches)	84%	moderate
November Weather	0°C (33°F)	39 mm (1.5 inches)	88%	moderate
December Weather	-5°C (23°F)	55 mm (2.2 inches)	84%	low