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Jefferson County, MS

: September 2026 so far averaged 82°F in Jefferson County, MS, the warmest 1 to 29 September in the county average since the data begin in 1951 (county average from NOAA gridded data, 1951 to 2026).

Last updated . This page normally updates every day; the latest update is late.

High
92°F
Warmest since 2019
5th warmest of 76
Low
63.4°F
Warmest since 2023
25th warmest of 76

No measurable precipitation in the county average of Jefferson County, MS for 7 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).

Every 29 September high of the county average in Jefferson County, MS since 1951: 92°F in 2026; the highest is 97°F, in 1953.
2019: 94.1°F1953: 97°F2026: 92°F 2026 92°F 1953 97°F since 2019 1951 2026
  • Normal range, 79.4 to 90.1°F
Every year as a table

Every 29 September low of the county average in Jefferson County, MS since 1951: 63.4°F in 2026; the lowest is 36.3°F, in 1967.

YearHigh, °FLow, °F
20269263.4
202588.258.2
202486.759.6
20238863.4
202281.150.1
202179.668
202076.252.5
201994.167.2
201875.665
20179065.7
201686.559.1
201587.170.2
201483.168.3
201385.665.8
201287.464.3
201187.661.6
201082.652
200986.556.5
200884.356.2
20078663.4
20068447.7
200591.166.4
200483.554.4
200380.947.1
200285.261.3
200180.747.8
200083.248.7
199987.568.1
199885.873.3
19978761.4
199669.146
199585.858.6
199490.760
199382.247.4
199279.758.1
19918050.1
199091.155.8
198971.962.1
198887.766.3
198789.163.4
198692.268.9
198578.450.6
198475.451.8
198382.752.3
19828654.9
198191.463.3
198090.563.9
197984.561.1
197873.465.4
197788.969.2
19767464.1
19757745.3
197488.355
197387.270.2
197286.469.9
19718967.8
197077.250.1
196988.752.6
196885.455.2
196765.536.3
196683.260
196578.865.8
196470.163.3
19637756.5
196281.948.6
196187.160.6
19607456.2
195990.870
195878.552.2
195766.457.4
195690.551.4
195592.170.9
195489.768.5
19539757.9
195290.353.5
195181.453.2

The month

August 2026 averaged 84.5°F in Jefferson County, MS, the warmest August in the county average since 2023, 3rd warmest of 132 (county average from NOAA's monthly county data, 1895 to 2026).

The month in words
  • Tuesday 29 September 2026: a high of 92°F averaged over Jefferson County, MS, the warmest 29 September in the county average since 2019, 5th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
  • Tuesday 29 September 2026: a low of 63.4°F averaged over Jefferson County, MS, the warmest 29 September night in the county average since 2023, tied 25th warmest of 76 (with 2023, 2007 and 1987) (county average from NOAA gridded data, 1951 to 2026).
Days of the month without a value
0

Nearby

Tallulah-Vicksburg, LA 42.5 mi, the nearest city with its own station