April Weather in Gillette, United States

Last updated: June 24, 2025

In April, the average temperature in Gillette, United States is a brisk 6°C (42°F). However, temperatures can vary widely, with a minimum of -20°C (-4°F) and a maximum reaching 27°C (81°F). Expect about 61 mm (2.4 in) of precipitation over 11 days, accompanied by an average humidity of 70%. Stay prepared for the unpredictable weather!

April Temperature in Gillette

In April in Gillette, the average temperature is 6°C (42°F), with maximums reaching 27°C (81°F) and minimums dropping as low as -20°C (-4°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates April temperature patterns in Gillette, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gillette, April typically has an average temperature of 6°C (42°F), with highs reaching up to 27°C (81°F) and lows dropping to around -20°C (-4°F).

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

April Precipitation in Gillette

In Gillette in April, the total precipitation amount is 61 mm (2.4 in) over the course of 11 days.

April Precipitation Trends in Gillette

The chart displays monthly precipitation patterns in Gillette, 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 Gillette, April typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 11 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 Gillette

In Gillette in April, humidity is 70%. With an average temperature of 6°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and requiring extra layers to stay warm and comfortable while exploring.

April Average Humidity in Gillette

This chart illustrates the average monthly humidity levels in Gillette, 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 Gillette is approximately 70%, 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 Gillette

In Gillette in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Gillette.

Maximum UV Index Levels in Gillette for April

The chart shows the monthly maximum UV Index (UVI) for Gillette 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 Gillette typically reaches 10, which falls under the very high exposure category.

Data source: Gillette 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 Gillette Compares to Other Months

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

This table compares monthly weather conditions in Gillette, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	19 mm (0.8 inches)	78%	moderate
February Weather	-5°C (23°F)	26 mm (1.0 inches)	79%	moderate
March Weather	3°C (38°F)	33 mm (1.3 inches)	71%	high
April Weather	6°C (42°F)	61 mm (2.4 inches)	70%	very high
May Weather	12°C (53°F)	67 mm (2.6 inches)	75%	very high
June Weather	19°C (67°F)	39 mm (1.6 inches)	82%	extreme
July Weather	23°C (74°F)	56 mm (2.2 inches)	84%	extreme
August Weather	21°C (71°F)	35 mm (1.4 inches)	85%	very high
September Weather	16°C (62°F)	43 mm (1.7 inches)	79%	very high
October Weather	6°C (44°F)	47 mm (1.9 inches)	75%	moderate
November Weather	3°C (37°F)	20 mm (0.8 inches)	75%	moderate
December Weather	-1°C (30°F)	24 mm (0.9 inches)	81%	low