Crystal Lake's Climate Data and Its Top-Rated Window Pros
Local risk and climate data for Crystal Lake, IL sit below, translated into plain terms for a window buyer rather than left as raw codes. 10 installers follow that data instead of a license roster, their rank built from Google's star rating and how many people left one. Checked October 2026.
Google Maps ratings checked · How we rank
5AIECC climate zone · ENERGY STAR Northern zone
What zone 5A means for a Crystal Lake window
McHenry County's normal precipitation runs about 39.4 inches a year, with 35.1 inches of snow, which is a separate question from energy performance but still shapes which window details matter in Crystal Lake.
Moisture and glass performance are handled by different parts of a window's spec sheet, and a Crystal Lake buyer benefits from checking both instead of assuming one implies the other.
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 3.7 mi away.
Storm and weather risk around Crystal Lake
FEMA scores McHenry County's winter-weather risk as Relatively Moderate and its flood risk as Relatively Moderate.
Winter risk in Crystal Lake weighs on U-factor and condensation resistance; flood risk weighs more on sill height and drainage detailing than on the glass package.
Treat these as two separate conversations with a Crystal Lake contractor, not one.
- Hurricane
- Very Low
- Strong wind
- Relatively High
- 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 Crystal Lake 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.
10 top-rated window installers near Crystal Lake, IL
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.
- Arax Windows Work Window Repair & Glass ReplacementGoogle reviews
- Home Window Repair & Replacement CompanyGoogle reviews
- Jackson Exteriors Co.Google reviews
- Nova Window ReplacementGoogle reviews
- Fox River Glass & MirrorGoogle reviews
- Local Window Service Inc.Google reviews
- Indigo Window ReplacementGoogle reviews
- Your Window SolutionsGoogle reviews
- Contemporary Exteriors Inc.Google reviews
- SKY Window ReplacementGoogle reviews