Climate & Weather in Raleigh
Raleigh has a humid subtropical climate: hot, humid summers and mild-to-cool winters. NOAA-sourced data for Raleigh-Durham International Airport (RDU) puts January's average daily temperature around 50°F and July's mean around 81°F (with typical July highs near 90.8°F and lows near 71.7°F) -- genuine seasonal variation, distinct from Houston's essentially cold-season-free winter covered elsewhere in this project.
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Learn moreSummer: Hot and Humid, With a Real Ceiling
Raleigh's warm season runs roughly May through September, with July as the hottest month -- an average high near 90.8°F and an average low near 71.7°F, for a roughly 81°F mean, per NOAA-sourced RDU data reviewed this session. Combined with Piedmont humidity, this produces real, if not extreme, summer heat -- genuinely warm but with more day-to-night temperature swing than a Gulf Coast city typically sees.
Winter: Genuinely Cooler Than a Gulf Coast or Coastal Comparison
January, Raleigh's coolest month, averages around 50°F per data reviewed this session -- meaningfully cooler than Houston's roughly 53.8°F January mean (per NOAA data cited elsewhere in this project), and with a real, if still infrequent, chance of measurable snow or ice most winters. This is a genuine seasonal-variation difference worth flagging for anyone comparing Raleigh against a warmer, more snow-free Gulf Coast or Florida winter.
Hurricane Season, Framed Honestly for an Inland Piedmont City
Atlantic hurricane season runs June 1 through November 30, and as covered in full on the flood-hurricane-risk topic page, Raleigh's practical exposure during this window is inland rainfall and flooding from a storm's weakened remnants (as Hurricane Fran demonstrated in 1996), not direct landfall wind or storm surge. Spring (roughly March-May) is separately Raleigh's primary severe-thunderstorm and tornado season, a distinct calendar window from hurricane season.
Winter Weather and Ice
Raleigh sees occasional winter storms and ice events, including the documented extreme outlier of the January 25, 2000 blizzard (20.3 inches of snow over roughly a day) and, per aggregated regional reporting cited in the base Raleigh record, ice storms that have closed I-40 through the Triangle in past events. This is real, if infrequent, winter weather risk that a Gulf Coast or Florida comparison city generally would not carry to the same degree.
Key takeaways
- Per NOAA-sourced RDU data: January's average daily temperature is around 50°F; July's mean is around 81°F (highs near 90.8°F, lows near 71.7°F) -- Raleigh has genuine seasonal variation, including real winter cold, unlike near-winterless Gulf Coast cities.
- Hurricane season (June 1-November 30) exposure in Raleigh is about inland rainfall/flooding from a storm's weakened remnants, not direct landfall wind or storm surge -- see the flood-hurricane-risk topic page.
- Spring (roughly March-May) is Raleigh's separate, primary severe-thunderstorm and tornado season.
- Winter carries a real, if infrequent, snow/ice risk -- the January 2000 blizzard (20.3 inches) is the documented extreme outlier, and ice storms have closed I-40 through the Triangle in past events per aggregated regional reporting.
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