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Johnson County, WY

: September 2026 so far averaged 60.6°F in Johnson County, WY, the warmest 1 to 29 September in the county average since 2024, tied 8th warmest of 76 (with 2023) (county average from NOAA gridded data, 1951 to 2026).

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

High
67.8°F
Warmest since 2025
36th warmest of 76
Low
43.3°F
Warmest since 2025
16th warmest of 76
Precipitation
0.02 in
Wettest since 2022
16th wettest of 76
Every 29 September low of the county average in Johnson County, WY since 1951: 43.3°F in 2026; the lowest is 17°F, in 1985.
2025: 49.1°F1985: 17°F2026: 43.3°F 2026 43.3°F 1985 17°F since 2025 1951 2026
  • Normal range, 31.9 to 44.7°F
Every year as a table

Every 29 September high of the county average in Johnson County, WY since 1951: 67.8°F in 2026; the highest is 87°F, in 2010.

YearHigh, °FLow, °F
202667.843.3
20258049.1
202486.248.2
202368.342.3
202279.446.4
202180.943.9
202060.233.2
201953.639.1
201845.231.4
201763.336.4
201674.744.4
201565.942.4
201449.744.3
201355.431.9
201273.542.3
20117741.6
20108750.1
200969.731.6
200868.436.1
200773.444.7
200671.538.3
200560.435.5
200466.440.6
200359.535.7
200264.837.6
200182.848.7
200075.240.9
199948.927.5
199872.242.9
199766.637
19966836.9
199570.642.5
199480.644.7
19936735.5
199273.134
199174.743.8
199064.836.6
198977.545.5
19885429.6
19876132
198650.430.8
198525.817
198445.821
198353.339.1
198240.837
198173.942
198080.939.9
197976.340.1
197867.843.4
197771.840.2
197666.133
19756834.4
197459.532.9
197367.434.4
197251.226.6
197158.737.4
197072.535.3
196977.441.1
196860.637.7
196779.744.9
196664.742.1
196538.531.2
196465.834.7
196368.840.8
196267.645.1
19616733.4
196062.837.8
195938.526.1
195867.136
19578242.4
195661.434.3
195564.132.8
195451.134.5
195371.940.2
195275.739.4
195169.238.5

The month

August 2026 averaged 68.9°F in Johnson County, WY, the warmest August in the county average since 2022, tied 16th warmest of 132 (with 1970) (county average from NOAA's monthly county data, 1895 to 2026).

The month in words
  • Tuesday 29 September 2026: a high of 67.8°F averaged over Johnson County, WY, the warmest 29 September in the county average since 2025, tied 36th warmest of 76 (with 1978) (county average from NOAA gridded data, 1951 to 2026).
  • Tuesday 29 September 2026: a low of 43.3°F averaged over Johnson County, WY, the warmest 29 September night in the county average since 2025, 16th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
  • Tuesday 29 September 2026: 0.02 in of precipitation averaged over Johnson County, WY, the wettest 29 September in the county average since 2022, tied 16th wettest of 76 (with 2022, 2018 and 1956) (county average from NOAA gridded data, 1951 to 2026).
Days of the month without a value
0

Nearby

Sheridan, WY 53.0 mi, the nearest city with its own station