If your allergy symptoms seem to arrive before autumn officially begins, you’re not imagining it. In Raleigh, warm late-summer temperatures, lingering humidity and delayed first frosts can allow fall allergens to appear earlier and stick around longer. According to the Asthma and Allergy Foundation of America, ragweed season often begins in August and can continue until the first hard frost.1
For a lot of our patients, that means sneezing, congestion and itchy eyes when they’re still expecting summer.
At Raleigh Capitol Ear, Nose, Throat & Allergy, one of the questions we hear most often is, “Why are my fall allergies starting already?” The answer usually comes down to what’s happening outdoors.
Why Raleigh’s Fall Allergy Season Often Begins Early
Fall allergies are closely tied to weather patterns.
When Raleigh experiences warm days deep into late summer, plants continue producing pollen. Humid weather can also encourage mold growth, particularly after periods of rain. Across the Research Triangle, these conditions often create overlapping allergy seasons where summer allergens haven’t fully disappeared before fall allergens arrive.
The U.S. Environmental Protection Agency notes that longer and more intense pollen seasons are being observed in many areas as growing seasons extend and frost arrives later in the year.2
How does that change things? You may start experiencing allergy symptoms in early August instead of September.
Three Common Fall Allergens Around Raleigh
Ragweed
Ragweed is usually the biggest fall allergy trigger.
You’re most likely to encounter it:
- Along roadsides
- Open fields
- Construction sites
- Undeveloped land around the Raleigh area
Common symptoms include sneezing, nasal congestion, postnasal drip and watery eyes.
The challenging part is that ragweed pollen can travel long distances on the wind, so you don’t need to be standing next to the plant to be affected.
Mold Spores
Fall leaves create ideal conditions for mold growth.
You may encounter mold spores around:
- Leaf piles
- Wooded parks
- Damp yards
- Walking trails following rainy weather
Symptoms can include congestion, coughing, throat irritation and itchy eyes. Many people mistake mold allergies for an early seasonal cold.
Weed Pollens
Pigweed and other fall weeds remain active well into the season.
These allergens are often present in:
- Vacant lots
- Rural edges of Wake County
- Parks with unmanaged vegetation
- Areas surrounding hiking trails
Symptoms frequently mirror other seasonal allergies, making testing helpful when the trigger isn’t obvious.
Do Fall Allergies Usually Start With Nasal Symptoms?
Yes. Congestion, sneezing and a runny nose are often the earliest signs of fall allergies, sometimes appearing weeks before cooler weather arrives. Many people initially assume they’re developing a cold.
Can Weather Changes Increase Allergy Symptoms?
Yes. Windy days spread pollen farther, while humidity can increase mold exposure. Many patients notice symptoms fluctuate significantly from one day to the next, depending on local weather conditions.
When Over-The-Counter Medications Aren’t Enough
Many people manage seasonal allergies successfully with antihistamines or nasal sprays.
Sometimes those treatments stop providing enough relief. If you’re dealing with recurring sinus pressure, ongoing congestion or symptoms that return year after year despite medication, allergy testing may help identify exactly what’s triggering your reactions.
Once those triggers are known, you can make more informed treatment decisions. For some patients, immunotherapy helps reduce long-term sensitivity to specific allergens rather than simply treating symptoms as they occur.
If fall allergies seem to be arriving earlier every year and you’re tired of guessing what’s causing them, Raleigh Capitol Ear, Nose, Throat & Allergy can help you better understand what’s behind your symptoms and discuss whether allergy testing or immunotherapy may be an appropriate next step.
Sources
1 Asthma and Allergy Foundation of America. “Ragweed Pollen Allergy.” Ragweed Pollen Allergy
2 U.S. Environmental Protection Agency. “Seasonality and Climate Change: A Review of Observed Evidence in the United States.” EPA Seasonality and Climate Change Report