Gilbert, Arizona, located in the Sonoran Desert, experiences a hot desert climate characterized by high temperatures and low annual rainfall. Understanding this climate is essential for residents and businesses to adapt and thrive in the region.
Climate Overview
Gilbert’s climate features:
- Hot Summers: The hot season lasts from late May to mid-September, with average daily high temperatures above 97°F (36°C). July is typically the hottest month, averaging a high of 105°F (41°C) and a low of 82°F (28°C).
- Mild Winters: The cool season spans from late November to late February, with average daily high temperatures below 73°F (23°C). January is usually the coolest month, with an average low of 41°F (5°C) and a high of 67°F (19°C).
- Low Precipitation: Annual rainfall averages around 9 inches (230 mm), with the majority occurring during the monsoon season from July to September.
Environmental Initiatives
To address the challenges posed by its arid climate, Gilbert has implemented several environmental programs:
Reclaimed Water Program
Since 1986, Gilbert has utilized 100% of its reclaimed water for non-potable purposes such as landscape irrigation. In 2020 alone, 2.9 billion gallons of reclaimed water were used, conserving potable water resources. Additionally, the town operates four recharge facilities that have replenished approximately 55 billion gallons of reclaimed water into the aquifer to date.
Green Gilbert Partnership Program
This program encourages local businesses to adopt sustainable practices focusing on pollution prevention, water conservation, and waste reduction. Participants receive personalized plans, staff training, and recognition for their efforts, fostering a community-wide commitment to environmental stewardship.
Electric Fire Truck Initiative
In partnership with Salt River Project (SRP), the Gilbert Fire & Rescue Department introduced Arizona’s first electric fire truck. This vehicle produces zero tailpipe emissions, offering a cleaner and quieter alternative to traditional diesel-powered fire trucks, and underscores the town’s dedication to reducing its carbon footprint.
By understanding Gilbert’s unique climate and supporting its environmental initiatives, residents and businesses can contribute to a sustainable and resilient community.

