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Washington County, TN

: September 2026 so far averaged 72.9°F in Washington County, TN, the warmest 1 to 29 September in the county average since 2019, 4th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).

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

High
76.1°F
Coldest since 2022
37th coldest of 76
Low
46.2°F
Coldest since 2022
24th coldest of 76

No measurable precipitation in the county average of Washington County, TN for 4 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).

Every 29 September low of the county average in Washington County, TN since 1951: 46.2°F in 2026; the lowest is 37°F, in 2022.
2022: 37°F2026: 46.2°F 2026 46.2°F since 2022 1951 2026
  • Normal range, 41.2 to 62.8°F
Every year as a table

Every 29 September high of the county average in Washington County, TN since 1951: 76.1°F in 2026; the highest is 89.7°F, in 2019.

YearHigh, °FLow, °F
202676.146.2
202581.258.2
20247762.8
202377.355.7
20226637
202180.852.4
202081.754.7
201989.764.5
201876.261.5
201784.856.1
201680.550.7
201579.863.8
201477.654.4
201374.752.4
201275.356.9
201176.551.5
20106952.2
200975.548.7
200876.854.9
200779.944.7
200670.544
200581.655.9
200472.256.4
200366.841.4
200279.756.7
200165.739.4
200072.943.4
199978.262.9
199887.962.8
199767.554.1
199670.946.5
199576.948
199473.344
199369.639.5
199271.947.4
19917439.1
199078.251.5
198969.645.4
198878.252.4
19877952.7
198686.563.1
198575.240.8
198462.851.2
198376.844.9
198276.547.2
198175.539.8
198061.949.8
197977.861.1
197877.952.3
197770.645.8
197674.260.2
197572.544.7
197479.258.8
197384.760.9
197279.864.2
197183.960.1
197068.539
196974.440.6
196880.348.5
196762.741.7
196670.759.3
196576.548.2
196475.363.2
196366.751.4
196264.239.7
196179.347.9
196071.656.9
195986.659.5
19587142.5
195757.545.4
195669.549
195580.355.5
195488.156.6
19538846
195282.251.8
195170.840.6

The month

August 2026 averaged 75.3°F in Washington County, TN, the warmest August in the county average since 2021, tied 26th warmest of 132 (with 2011, 2003, 1954 and 2 other years) (county average from NOAA's monthly county data, 1895 to 2026).

The month in words
  • Tuesday 29 September 2026: a high of 76.1°F averaged over Washington County, TN, the coldest 29 September day in the county average since 2022, 37th coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
  • Tuesday 29 September 2026: a low of 46.2°F averaged over Washington County, TN, the coldest 29 September night in the county average since 2022, 24th coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
Days of the month without a value
0

Nearby

Bristol-Johnson City, TN 13.8 mi, the nearest city with its own station