St. Augustine's Climate Data and Its Top-Rated Window Pros
ENERGY STAR groups St. Johns County into its Southern zone, the U-factor and SHGC target worth checking against any quote you get in St. Augustine. Below that spec discussion sit 7 installers, their order set by Google rating, since St. Augustine is outside this site's window license file. A high rating is worth a look, not a finished decision.
Google Maps ratings checked · How we rank
2AIECC climate zone · ENERGY STAR Southern zone
What zone 2A means for a St. Augustine window
Jacksonville, FL runs a January average near 58°F and climbs to about 82°F by July, a swing that adds up to roughly 803 heating degree days most winters, with 3,079 on the summer cooling side of the ledger.
That load is the actual argument for paying up for a better U-factor in St. Augustine, separate from anything a brochure claims.
Zone 2A's requirement is the floor; St. Augustine's specific load is what tells you whether beating that floor is worth the extra cost.
Data: U.S. EPA / DOE, ENERGY STAR, ENERGY STAR Version 7.0 Climate Zones by County/ZIP (Windows, Doors, and Skylights) (V7.0); Pacific Northwest National Laboratory (DOE Building America), Guide to Determining Climate Zone by County: Building America and IECC 2021 Updates (PNNL-33270) (2021 IECC), from the nearest NOAA station 1.6 mi away.
Storm and weather risk around St. Augustine
FEMA rates St. Johns County's hurricane risk as Relatively High and its wind risk as Relatively Low.
Neither rating changes a window's energy label, but both are exactly what impact-resistance and design-pressure ratings are built to answer for a St. Augustine home.
Ask specifically about design pressure and impact rating for St. Augustine, not just energy performance, if either risk rating comes back on the high side.
- Hurricane
- Relatively High
- Strong wind
- Relatively Low
Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).
Guides to finish before St. Augustine window bids come in
- How to Read an NFRC Window Label Four numbers on one sticker decide most of a window's real-world performance. Here's what each one means.
- ENERGY STAR Window Criteria by Climate Zone ENERGY STAR splits the country into four zones, each with its own numbers. Here they are, and why the Northern zone works backward from the other three.
- Impact Windows vs. Shutters in Florida's Hurricane Zones Florida gives homeowners two paths to a protected opening. Here's how each one is tested, and where the HVHZ raises the bar further.
7 top-rated window installers near St. Augustine, FL
The order below weighs a Google rating against its review count, the same way this site weighs a U-factor against a brochure claim: on the number, not the name. Treat it as a rating, never as proof of a license, bond or HVHZ approval.
- Lee & Cates Glass - St. AugustineGoogle reviews
- 24/7 Mobile GlassGoogle reviews
- Beason's GlassGoogle reviews
- Glass tech limited incGoogle reviews
- Coastal Sash & DoorGoogle reviews
- Extreme Window & Door SolutionsGoogle reviews
- Windows Doors and MoreGoogle reviews