July Weather in Casper, United States

Last updated: June 24, 2025

In Casper, United States, the average temperature in July is a pleasant 22°C (72°F). However, be prepared for temperature swings, as it can drop to a minimum of 6°C (43°F) and soar up to a maximum of 37°C (98°F). Expect some rain, with an average precipitation of 17 mm (0.7 in) spread over 5 days. Additionally, the average humidity sits at a comfortable 76%, making it an ideal time to enjoy everything this destination has to offer!

July Temperature in Casper

In July in Casper, the average temperature is 22°C (72°F). Maximums can reach 37°C (98°F), and minimums can be as low as 6°C (43°F). This makes Casper an ideal destination for travelers seeking pleasant weather while enjoying a mix of warm and cooler evenings.

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

The chart illustrates July 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, July typically has an average temperature of 22°C (72°F), with highs reaching up to 37°C (98°F) and lows dropping to around 6°C (43°F).

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

July Precipitation in Casper

In Casper in July, the precipitation amount is 17 mm (0.7 in) over the course of 5 days.

July Precipitation Trends in Casper

The chart displays monthly precipitation patterns in Casper, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Casper, July typically receives around 17 mm (0.7 inches) of precipitation spread over approximately 5 days.

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

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Millimeters (mm) Inches (in)

July Humidity in Casper

In Casper in July humidity is 76%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making travel slightly uncomfortable as you navigate through the thick, saturated air.

July Average Humidity in Casper

This chart illustrates the average monthly humidity levels in Casper, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Casper is approximately 76%, offering insight into how humid the weather typically is during this month.

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

July UV Index in Casper

In Casper in July, 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 July

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

Data source: Casper July 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 July 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 July’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 July’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