May Weather in Casselberry, FL

Typical weather conditions during May

Temperature

Average Temperature

78°F

Average High

88°F

Average Low

69°F

Precipitation & Humidity

Average Monthly Precipitation

4.64 inches

Rainy Days

20.8 days

Average Humidity

61%

Data Information

Data Years: 2020 - 2024

Last Updated: September 10, 2025