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Washington County, KS

: September 2026 so far averaged 75.5°F in Washington County, KS, 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
77.8°F
Warmest since 2025
34th warmest of 76
Low
62.9°F
Warmest since 1998
4th warmest of 76

No measurable precipitation in the county average of Washington County, KS for 3 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, KS since 1951: 62.9°F in 2026; the lowest is 30.1°F, in 1984.
1998: 63.7°F1984: 30.1°F2026: 62.9°F 2026 62.9°F 1984 30.1°F since 1998 1951 2026
  • Normal range, 38.4 to 58°F
Every year as a table

Every 29 September high of the county average in Washington County, KS since 1951: 77.8°F in 2026; the highest is 96.7°F, in 1953.

YearHigh, °FLow, °F
202677.862.9
202588.556
202487.651
202393.162.3
202273.845.1
202189.261.3
202070.639.7
201968.854.5
201854.345.8
20177847.3
201670.145.2
201587.258.9
201483.855.6
201370.343.5
201276.342
201188.546.2
201077.450.4
200969.536.2
200887.557.9
200782.952.1
200664.242.4
200565.835.1
200471.846.5
200364.837.5
200286.655.3
200176.848.6
200084.645.7
199963.242.2
199886.663.7
199778.447.2
199670.138.5
199584.861.2
199480.748.2
199370.842.9
199264.239.1
199183.247
199076.151.7
198981.544.7
198873.852.4
198775.349.1
198687.559.6
198547.936.9
198453.530.1
198386.564.9
198285.262.9
198179.549.9
198066.955.1
197984.550.8
197877.647
197769.755
197659.835.9
197564.941.6
197466.937.1
19737152.8
197273.441.7
197183.563.4
197080.544.8
196981.655.3
196884.954.5
19676334.6
196675.545.2
196579.457.3
196469.338.1
196378.146.4
196269.446.4
196167.239.8
196075.148.7
195964.443
19587247.4
195775.745.1
195687.554.4
195575.151.5
195486.258
195396.761.3
195291.855.8
195165.341

The month

August 2026 averaged 77.6°F in Washington County, KS, the warmest August in the county average since 2023, tied 36th warmest of 132 (with 1941) (county average from NOAA's monthly county data, 1895 to 2026).

The month in words
  • Tuesday 29 September 2026: a high of 77.8°F averaged over Washington County, KS, the warmest 29 September in the county average since 2025, 34th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
  • Tuesday 29 September 2026: a low of 62.9°F averaged over Washington County, KS, the warmest 29 September night in the county average since 1998, tied 4th warmest of 76 (with 1982) (county average from NOAA gridded data, 1951 to 2026).
Days of the month without a value
0

Nearby

Concordia, KS 33.4 mi, the nearest city with its own station