The Worst Seasons For Mold: When Mold is Most Likely to Grow

Mold is an unsightly problem that affects many homes across the country. While mold can grow any time of year, certain seasons and climates are more conducive to mold growth. The worst seasons for mold also vary by location.

What is Mold?

Mold is an airborne fungus that occurs naturally in the air around us. In the presence of moisture, mold can flourish. Not only is it unsightly, but it can actually cause damage to walls, floors, ceilings, and other structural pieces of homes and buildings.

While the health risks associated with mold tend to be misleading, it can cause allergy-like symptoms. Those with reduced immune systems, the elderly, and the very young are most susceptible to mold-related health issues.

Talk to a local mold remediation specialist now at 1-888-443-3110 if you have mold.

The Worst Seasons For Mold

Seasonally, mold is most common from early spring through middle fall. Look for signs of excess moisture during the winter thaw, spring showers, and during humid summer months.

Concerns for Mold in the Spring

Spring can be the worst season for mold growth in areas with heavy rains or high water tables. Like the rebirth of plants, mold also beings to grow again in spring. Spring showers can provide the right environment for mold to invade.

Check your basement, unused windows and doors, and attic or crawl space after heavy rains for signs of water. Finished basements or attics may hide water and mold issues, so look for sagging or crumbling drywall and pay attention to funky odors.

Concerns for Mold in the Summer

Summer tends to be one of the worst seasons for mold growth throughout the Southeast and Midwest due to high humidity. Bathrooms and kitchens, already prone to high humidity, are most susceptible to mold growth. Poor ventilation makes the problem worse.

While AC units reduce humidity, the water extracted from the air needs to go somewhere. Water is typically routed to a drain, but older or poorly maintained units may leak in basements or crawl spaces.

Additionally, cold inside temperatures and hot and humid temperatures outside can lead to condensation around windows and doors. In either case, mold can begin to grow if you do not dry and clean these areas regularly.

Check weather sealing around windows and doors and make sure air conditioning drains are working properly. Install exhaust fans in humid kitchens and bathrooms and improve airflow in rooms with condensation.

The Most Common Questions About Mold Season

These are some of the most common questions we get about mold and seasonal mold growth.

At What Humidity Does Mold Grow?

There are always exceptions, but mold normally prefers 60% or higher humidity. Ideally, you should keep the humidity in your property between 30% and 50% to prevent mold. If you are checking the humidity levels in your home, make sure you test multiple areas. Humidity levels in basements, crawlspaces, and attics are often significantly different than in living spaces. When testing for humidity, allow sensors to normalize for several hours or overnight for the most accurate results.

At What Temperature Does Mold Grow?

Most types of mold prefer temperatures above 70 ° F/20° C, but some molds will tolerate lower temperatures. While room temperatures may be lower, appliances like dishwashers, dryers, and hot water heaters can generate enough heat to raise the temperature in small areas. With a constant source of water and the right humidity, the temperature boost from these appliances is enough to maintain mold even through the cold winter months.

Can Mold Grow in Cold Weather?

Mold typically prefers at least 60% humidity and temperatures above 70 ° F/20° C, but there are always exceptions. Mold can grow in cold weather if there is a consistent source of moisture. Even during extremely cold periods, most unfinished basements won’t get colder than 50 ° F/10° C. Furnaces, hot water tanks, and dryers can boost the temperature enough to allow mold to grow. Most living areas are kept between 65 ° F/18° C and 75 ° F/24° C during the winter, which is just right for mold to grow during the winter.

Hiring a Mold Removal Company

While you can clean up mold with a solution of bleach and water, this is only a temporary solution. Mold is always a symptom of a source of water. You need to resolve the source of moisture to permanently resolve the problem. If you don’t fix the water issue, the mold will eventually return. Mold can also spread further than your eyes can see. You may only see a few spots of mold when it’s growing in your walls or under the carpet. If mold reappears after your do-it-yourself cleaning attempts, it’s time to contact a mold remediation specialist.

As the largest network of restoration companies, Restoration Local will connect you with a qualified mold remediation company near you. Find a mold removal company near you now or call 1-888-443-3110 to speak with our on-call mold specialist in your area. They are experienced in resolving the originating source of moisture, removing the contaminated material, and cleaning the area to ensure it doesn’t return. Our on-call mold removal companies offer 24-hour service, 30-minute response time, and a free estimate.

Author: Jeff Rooks

Jeff Rooks writes restoration content that helps homeowners restore their lives after a disaster or accident. Most days, you can find him cycling through Tampa. He also enjoys exploring new and delicious food and beverages around the world.

Restoration Local® Difference

Upfront Free
We Work With
All Insurance!
60 Minute
Save You

It takes time and the right equipment to clean up any type of residential or commercial damage. Restoration Local® connects homeowners and property managers to the largest network of restoration companies and disaster mitigation contractors in the country.

With thousands of restoration companies covering 95% of the continental United States, it couldn’t be easier to find an experienced and reliable contractor in your area. You can even read reviews from other customers who had similar issues.

If you need restoration services, call now to talk with the local on-call contractor nearest you now. Our on-call restoration companies always offer 24-hour emergency services, 60-minute response time, and a free estimate on all restoration services.