The climate in Sandersville is pleasant and consistently mild, with features typical of a southern climate. According to scientific standards, Sandersville has a humid subtropical climate, moderate year-round with an average annual temperature of 65 degrees Fahrenheit. Summer weather in Sandersville is generally very warm and sunny, and the winters are pleasingly mild.

Summers typically consist of long spells of warm and humid weather. Average afternoon high temperatures are in the lower 90s. Readings of 90 or higher can be expected on 70 to 80 days. Overnight lows usually range from the upper 60s to lower 70s.

July is the warmest month with an average daily high temperature of 91 degrees, followed closely by June and August at 89 and 90 respectively. The highest recorded temperature was 107 degrees in 1986.

Temperatures during winter months are more variable. Normally, long stretches of mild weather will alternate with brief cold spells. Winter high temperatures average in the mid 50s to lower 60s. Lows average in the mid 30s. Lows of 32 degrees or lower can be expected on 40 to 50 days.

The average low temperature is 51.58 degrees year around with the coldest average nights coming in January at 34 degrees. December and February lows average 36 degrees. The lowest recorded temperature was minus 3 degrees in 1985.

Temperature variations between night and day tend to be moderate during summer with a difference that can reach 21 degrees Fahrenheit, and moderate during winter with an average difference of 23 degrees Fahrenheit.

Spring can be a short season in Sandersville, with pleasant weather and temperatures while it lasts. Autumn is a dry season and the month of October is usually the driest month of the year, with temperatures reaching daily highs of 77°F, which can drop at night-time to 50°F.

Spring and Autumn seasons are characterized by much variability from day to day and from year to year. The average date of first freeze is in mid-November. The average date of the last freeze in the spring is in mid to late March.

A measurable amount of rain falls on about 120 days each year. Sandersville gets 47 inches of rain per year compared to the U.S. average of 37. The number of days with any measurable precipitation is 101. March is the average wettest month. Snowfall is very rare ... with less than an inch a year compared to the national average of 25 inches.

Averaging over many years, driest months are September and October and the wettest month is March. Thunderstorms are common in the spring and summer months. On a typical year, thunder will be heard on 50 to 60 days.

On average, there are 216 sunny days per year in Sandersville. The comfort index, which is based on humidity during the hot months, is a 27 out of 100, where higher is more comfortable. The U.S. average on the comfort index is 44.