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Jefferson County, TX

: September 2026 so far averaged 82.4°F in Jefferson County, TX, the warmest 1 to 29 September in the county average since 2023, tied 4th warmest of 76 (with 2016) (county average from NOAA gridded data, 1951 to 2026).

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

High
90.2°F
Warmest since 2024
13th warmest of 76
Low
72.5°F
Warmest since 2019
11th warmest of 76

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

Every 29 September low of the county average in Jefferson County, TX since 1951: 72.5°F in 2026; the lowest is 47.1°F, in 1967.
2019: 75°F1967: 47.1°F2026: 72.5°F 2026 72.5°F 1967 47.1°F since 2019 1951 2026
  • Normal range, 55 to 74.5°F
Every year as a table

Every 29 September high of the county average in Jefferson County, TX since 1951: 90.2°F in 2026; the highest is 94.2°F, in 1998.

YearHigh, °FLow, °F
202690.272.5
202588.764.5
202491.361.1
202392.472.4
202285.558.5
202182.368.8
202081.755
201990.775
201881.270.8
20179171.3
201687.764.2
201583.368.8
201485.371
20138974.5
201287.571.2
201193.371.1
201083.359.1
200989.770.1
200886.261.1
200788.468.8
200684.960.8
200593.774.6
200486.664.1
200382.957.6
200287.667
200180.255.1
200083.754
199984.164.3
199894.274.6
199787.363.5
199675.852.3
199588.266
199489.561.3
199384.755
19928460
199179.256.2
19908964.2
198977.162.6
19888865.9
198777.870.7
19868976.1
198582.163.6
19847759.1
19838362.7
198287.666.5
198191.267.2
198089.373.9
197986.262.2
197875.766.6
197790.874.8
197680.567.3
197579.753.4
197489.359.7
197384.769
197284.971.5
197187.870.3
197077.758.1
196989.860.4
196884.459
196770.447.1
196685.162.5
196585.565.7
196473.964.4
196378.461.4
196283.862.5
196189.769
196078.860
195987.474.2
195878.562.4
195778.158.3
195692.964.9
195590.775.3
195485.773.6
195393.469.2
195287.961.4
195182.863.1

The month

August 2026 averaged 86°F in Jefferson County, TX, 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 90.2°F averaged over Jefferson County, TX, the warmest 29 September in the county average since 2024, 13th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
  • Tuesday 29 September 2026: a low of 72.5°F averaged over Jefferson County, TX, the warmest 29 September night in the county average since 2019, 11th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
Days of the month without a value
0

Nearby

Beaumont-Port Arthur, TX 10.0 mi, the nearest city with its own station