Weather in December in Fayetteville, Ar

• The average temperature in Fayetteville, Ar in December is cool at 3.3 °C (37.94 °F).
• Afternoons can be a little cool with average high temperatures reaching 9.2 °C (48.6 °F).
• Overnight temperatures are generally slightly cold with an average low of -2.5 °C (27.5 °F).
• The variation/ range of diurnal mean temperatures in December is 11.7 °C (21.1 °F).
• Precipitation averages for December are moderate with 79mm (3.1 in) recorded.
• The shortest day is 9h 42' long and the longest day is 9h 52' long with an average length of 9h 45'.

Weather Trend Graph for December in Fayetteville, Ar, Usa