30-year climate normals
Rankin County Climate and Weather Averages
Hottest month — August
92.2°average daily high. The coldest month is January, averaging a low of 36.6°F.
Rankin County gets 57.35" of precipitation a year and 1" of snow, and 29% of it falls in Feb, Mar, Apr.
Temperature through the year
Each bar spans the average daily low to the average daily high for that month.
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| January | 57.4° | 36.6° | 5.42" | 0.2" |
| February | 62.0° | 39.8° | 5.10" | 0.2" |
| March | 69.4° | 46.4° | 5.68" | 0.1" |
| April | 76.5° | 53.3° | 5.84" | 0.0" |
| May | 83.8° | 62.1° | 4.36" | 0.0" |
| June | 89.9° | 69.4° | 4.43" | 0.0" |
| July | 92.1° | 72.2° | 5.02" | 0.0" |
| August | 92.2° | 71.5° | 4.69" | 0.0" |
| September | 87.8° | 66.0° | 3.48" | 0.0" |
| October | 78.3° | 54.2° | 3.80" | 0.0" |
| November | 67.2° | 43.6° | 4.40" | 0.0" |
| December | 59.6° | 38.7° | 5.13" | 0.5" |
Rainfall by month
Precipitation is spread fairly evenly through the year here, with 29% falling in the wettest three months (Feb, Mar, Apr).
What this climate costs you
Degree days measure how hard a building has to work to stay comfortable. They are the reason two identical houses have very different power bills, and they are the link between the weather here and what you pay every month.
These are rough planning figures from degree days and the state electricity price, not a bill estimate. House size, insulation and fuel type move them a lot. See the full cost of owning a home in Rankin County, where electricity is one line of eight.
Common questions
What is the weather like in Rankin County?
Rankin County averages a high of 92.2°F in August and a low of 36.6°F in January. Annual precipitation is 57.35 inches, including 1 inches of snow.
When is the rainy season in Rankin County?
The wettest stretch is Feb, Mar, Apr, which accounts for 29% of the year's precipitation. Precipitation is relatively evenly distributed across the year.
How hot does it get in Rankin County?
The average daily high in August, the hottest month, is 92.2°F. That drives 2,402 cooling degree days a year, which is what your air conditioning has to work against.
Does it snow in Rankin County?
Yes. Rankin County averages 1 inches of snow a year.
Sources
- Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station JACKSON INTL AP, MS US (USW00003940), 8.5 miles from the county centroid.
- Heating and cooling degree days — NOAA, same station and period.
- Electricity price — US Energy Information Administration, Electric Power Monthly Table 5.6.A, Mississippi residential average.
- Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.