Averages:

• Average Annual Rainfall: 12.17 inches (30.91 cm)
• Average First Occurrence of 100 °F (37.8 °C): May 26
• Average Monsoon Start Date: July 3
• Average First Freeze Date: November 24

Temperature Records:

• Record High Temperature: 117 °F (47.2 °C) on June 26, 1990
• Record Low Temperature: 6 °F (-14.4 °C) on January 7, 1913
• Warmest year: 1989, with an average temperature of 71.4 °F (21.9 °C)
• Coldest Year: 1912, with an average temperature of 65.0 °F (18.3 °C)
• Hottest Summer: 1994, with 82 of 92 days at or above 100 °F (37.8 °C)

Precipitation Records:

• Record One-day Precipitation: 3.93 inches (9.98 cm) on July 29, 1958
• Record One-day Snowfall: 6.8 inches (17.3 cm) on December 8, 1971
• Wettest Year: 1905, with 24.17 inches (61.39 cm) precipitation
• Driest Year: 1924, with 5.07 inches (12.88 cm) precipitation

Note: This information is the most currently available, but it will likely change in future years. Hopefully we won't have any new temperature records set… Well, at least not as long as I live here! I remember the record hot summer of 1994, and I hope to never see such a hellish summer again.