June Weather in Casper, United States

Last updated: June 24, 2025

In June, the average temperature in Casper, United States hovers around 18°C (65°F). Expect a range of 1°C (34°F) as the minimum and a scorching 37°C (99°F) at its peak. With an average humidity of 75%, the weather brings a certain mugginess, complemented by 30 mm (1.2 in) of precipitation spread over 5 days. Stay prepared for a mix of warm sunshine and occasional rain!

June Temperature in Casper

In June in Casper, the average temperature is 18°C (65°F). Maximums can reach 37°C (99°F), while minimums can drop as low as 1°C (34°F). Be prepared for a wide range of temperatures when traveling to Casper during this month.

June Weather in Casper: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Casper, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Casper, June typically has an average temperature of 18°C (65°F), with highs reaching up to 37°C (99°F) and lows dropping to around 1°C (34°F).

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

June Precipitation in Casper

In Casper in June, the precipitation amount is 30 mm (1.2 in) over the course of 5 days.

June Precipitation Trends in Casper

The chart displays monthly precipitation patterns in Casper, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Casper, June typically receives around 30 mm (1.2 inches) of precipitation spread over approximately 5 days.

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

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Millimeters (mm) Inches (in)

June Humidity in Casper

In Casper in June, humidity is 75%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket that can make outdoor exploration feel a bit stifling, potentially leading to discomfort during travel activities.

June Average Humidity in Casper

This chart illustrates the average monthly humidity levels in Casper, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Casper is approximately 75%, offering insight into how humid the weather typically is during this month.

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

June UV Index in Casper

In Casper in June, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Casper.

Maximum UV Index Levels in Casper for June

The chart shows the monthly maximum UV Index (UVI) for Casper in June, 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 June, the maximum UV index in Casper typically reaches 12, which falls under the extreme exposure category.

Data source: Casper June 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 June Weather in Casper Compares to Other Months

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

This table compares monthly weather conditions in Casper, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	23 mm (0.9 inches)	79%	moderate
February Weather	-7°C (19°F)	31 mm (1.2 inches)	81%	high
March Weather	-1°C (31°F)	48 mm (1.9 inches)	70%	high
April Weather	3°C (38°F)	59 mm (2.3 inches)	67%	extreme
May Weather	10°C (50°F)	70 mm (2.7 inches)	70%	very high
June Weather	18°C (65°F)	30 mm (1.2 inches)	75%	extreme
July Weather	22°C (72°F)	17 mm (0.7 inches)	76%	extreme
August Weather	21°C (69°F)	19 mm (0.7 inches)	76%	extreme
September Weather	16°C (60°F)	29 mm (1.2 inches)	72%	very high
October Weather	5°C (41°F)	43 mm (1.7 inches)	70%	high
November Weather	1°C (34°F)	26 mm (1.0 inches)	76%	moderate
December Weather	-5°C (24°F)	27 mm (1.1 inches)	81%	moderate