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North Arkansas Climate: Four Seasons, Real Winter

North Arkansas (Ozark Mountains, Boston Mountains, Springfield Plateau) enjoys a **humid subtropical climate with strong continental influence**—meaning **four distinct seasons**, including **genuine winter**.

Seasonal Profile (Harrison / Mountain Home / Fayetteville averages)

Ozark Influence

  • Elevation (1,000–2,500 ft): Cooler than Delta/Coastal Plain by 5–10°F.
  • Radiational Cooling: Valleys trap cold air → **frost pockets** (earlier frost, later thaw).
  • Microclimates: North-facing slopes = cooler, wetter; South-facing = warmer, drier.

Extremes

  • Record Low: **-24°F (-31°C)** (Gravette, 1905; Fayetteville -11°F / -24°C 1899).
  • Record High: **115°F (46°C)** (Ozark, 1936; Fort Smith 115°F).
  • Ice Storms: **2000, 2009, 2021** — catastrophic tree/power damage.

Not "Warm" Year-Round

If you expect Florida/Arizona winters, **North Arkansas will surprise you**. It's **cool/cold half the year**. But that's why it has **fall color, spring ephemerals, trout streams, and a real off-season**—a rarity in the South.

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    SeasonMonthsAvg High / LowCharacter
    WinterDec–Feb45–50°F / 25–30°F (7–10°C / -4 to -1°C)**Cold, frosty, occasional snow/ice.** Jan avg low ~26°F (-3°C). 5–15" snow/yr. Ice storms possible.
    SpringMar–May60–75°F / 40–55°F (16–24°C / 4–13°C)Volatile: severe storms, tornadoes, flash floods. Wildflowers (dogwood, redbud).
    SummerJun–Aug85–92°F / 65–70°F (29–33°C / 18–21°C)**Warm, humid.** Heat index often 95–105°F. Afternoon T-storms. July avg high ~90°F (32°C).
    FallSep–Nov70–55°F / 50–35°F (21–13°C / 10–2°C)**Peak season.** Dry, crisp, spectacular foliage (Oct–Nov). Best hiking, floating, festivals.