Climate Chart of Raleigh, USA

Climate overview

Temperature

Monthly mean temperatures are lowest in January, at 5.4 °C, and highest in July, at 26.5 °C. These are averages for each month, not daytime maximum temperatures, so they describe the broad monthly temperature pattern rather than the full range visitors might encounter within a day. Across the calendar-month means, the unweighted mean is 16.3 °C. It is a summary of those monthly averages, not a day-weighted annual average.

Rain

Mean daily rainfall is highest in September, at 4.64 mm/day, and lowest in October, at 2.74 mm/day. These are daily mean amounts, not monthly rainfall totals; the lower monthly mean does not guarantee dry days or indicate how often rain falls. The unweighted mean across the calendar-month daily rainfall means is 3.39 mm/day. It offers an overall reference, but does not describe the rainfall on any particular day.

Sunshine

Mean daily sunshine duration is highest in July, at 11.35 hours/day, and lowest in December, at 6.01 hours/day. These averages can help with planning for daylight outdoor activities, but sunshine duration is not the same as day length. The unweighted mean across the monthly sunshine-duration averages is 8.68 hours/day per day, a broad reference rather than a promise of sunshine on a given date.

Snow

Mean daily snowfall reaches its highest monthly average in January, at 1.94 mm/day. The unweighted mean across the calendar-month averages is 0.39 mm/day per day. These figures do not establish how many days have snow, its depth or how long snow remains on the ground.