Window Climate Specs for Las Vegas, NV

Local risk and climate data for Las Vegas, NV are below, translated into plain terms for a window buyer rather than left as raw codes. Use it to check a proposed spec before you sign, not just to browse.

Licenses checked September 30, 2026 · Nevada State Contractors Board

3BIECC climate zone · ENERGY STAR South-Central zone

What zone 3B means for a Las Vegas window

Las Vegas-Henderson-North Las Vegas, NV runs a January average near 49°F and climbs to about 92°F by July, a swing that adds up to roughly 1,992 heating degree days most winters, with 3,407 on the summer cooling side of the ledger.

That load is the actual argument for paying up for a better U-factor in Las Vegas, separate from anything a brochure claims.

Zone 3B's requirement is the floor; Las Vegas'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 4.1 mi away.

Storm and weather risk around Las Vegas

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 Las Vegas home.

Ask specifically about design pressure and impact rating for Las Vegas, not just energy performance, if either risk rating comes back on the high side.

Strong wind: Relatively Moderate
Winter weather: Relatively Moderate

Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).

Guides to finish before Las Vegas 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.

Window installers with the longest license records in Las Vegas

Oldest license first, newest last, pulled directly from the state's file. This list isn't for sale.

A Cutting Edge Glass & MirrorWindow and glass contractor · 89118Verify license
A H EWindow and glass contractor · 89102Verify license
A T I WindowsWindow and glass contractor · 89119Verify license
Academy Glass Company INCWindow and glass contractor · 89118Verify license
All Glass & Aluminum LLCWindow and glass contractor · 89139Verify license
All In Installations LLCWindow and glass contractor · 89101Verify license
Allied Door And Glass LLCWindow and glass contractor · 89148Verify license
American Door Service INCWindow and glass contractor · 89128Verify license
American Eagle Glass LLCWindow and glass contractor · 89118Verify license
Andy Russo Jr INCWindow and glass contractor · 89118Verify license
Automatic Door & Glass LLCWindow and glass contractor · 89118Verify license
Avanti Glass And Mirror LLCWindow and glass contractor · 89113Verify license

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