Simpson County Climate
Simpson County, Mississippi
Avg Annual Temp
67.5°F
Annual Precip
57.5"
Annual Snowfall
0.7"
Extreme Heat Days
76.6
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Simpson County Weather
Deep South warmth in Simpson County
At 67.5°F, Simpson County's average annual temperature is roughly 12 degrees warmer than the national median. The county experiences the quintessential humid subtropical climate common to the Deep South.
Surpassing state temperature averages
Simpson County is significantly warmer than the average Mississippi county, exceeding the state mean of 63.9°F by over three degrees. It ranks as one of the warmest counties in the entire state.
Warmer than its northern neighbors
Simpson County's 67.5°F average makes it much warmer than Smith County to the east, which averages 62.4°F. This temperature gap creates distinct differences in local energy needs and planting zones.
Hot summers and consistent rain
July brings average highs of 84.1°F, contributing to 77 days of extreme heat annually. Winters are mild at 51.4°F, and the county receives a generous 57.5 inches of precipitation each year.
Outdoor gear for wet heat
Breathable, moisture-wicking clothing is a must for the 77 days of extreme heat and high humidity. Homeowners should ensure proper drainage systems to handle the 57.5 inches of annual rainfall.
Frequently Asked Questions
What is the average temperature in Simpson County?
How much rain does Simpson County get?
Does it snow in Simpson County?
How hot does Simpson County get in summer?
How cold are winters in Simpson County?
Track your own weather in Simpson County
Ambient Weather personal weather stations give you hyperlocal climate data.
Sponsored
Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.