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Big Horn County, MT

An ordinary day in Big Horn County, MT: was cooler than 39 of 75 earlier years in the county average (county average from NOAA gridded data, 1951 to 2026).

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

High
69.3°F
Coldest since 2023
37th coldest of 76
Low
41.8°F
Warmest since 2025
23rd warmest of 76

No measurable precipitation in the county average of Big Horn County, MT for 5 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).

Every 29 September high of the county average in Big Horn County, MT since 1951: 69.3°F in 2026; the highest is 89.7°F, in 2010.
2023: 66.9°F2010: 89.7°F2026: 69.3°F 2026 69.3°F 2010 89.7°F since 2023 1951 2026
  • Normal range, 53.4 to 79.6°F
Every year as a table

Every 29 September low of the county average in Big Horn County, MT since 1951: 41.8°F in 2026; the lowest is 20.8°F, in 1985.

YearHigh, °FLow, °F
202669.341.8
202582.548.7
202486.349.5
202366.939.8
202284.448.2
202176.740
202069.937.7
201945.735.5
201843.834.3
20177140
201673.845.3
201566.739
201451.543.4
201362.638.4
201277.246.3
201175.238.4
201089.750.9
200968.333.2
200867.135.8
200778.144.9
200675.139.1
200562.233.5
200470.141.1
200365.239.8
200263.937.1
200187.848.9
200079.342.8
199953.629.2
199874.744.1
199770.739.3
19967339.4
199572.244.6
199482.246.6
199367.837.3
199274.635.5
199176.547
199063.735.2
198982.447.4
19886035.6
198765.234.3
198656.335.5
198531.820.8
198450.224.7
198344.237.3
198244.235.7
198171.543.4
198081.541.3
197979.139.3
197865.645.1
197764.342.4
197672.334.7
197573.939.1
197463.135.3
197372.938.4
197252.425.4
197159.935
197075.737.8
196976.540.4
196867.538.2
196784.244.1
196669.645
196541.632.7
196467.633.4
196375.741.3
196271.449.8
19616533.5
196065.135.9
195942.725.7
195868.436.9
19578246.2
195660.735.8
195565.434.4
195445.234
19537838.4
195277.939.4
195171.536.8

The month

September 2026 so far averaged 60.9°F in Big Horn County, MT, the warmest 1 to 29 September in the county average since 2025, tied 16th warmest of 76 (with 1997) (county average from NOAA gridded data, 1951 to 2026).

The month in words
  • August 2026 averaged 70.6°F in Big Horn County, MT, the warmest August in the county average since 2022, tied 16th warmest of 132 (with 2012) (county average from NOAA's monthly county data, 1895 to 2026).
  • Tuesday 29 September 2026: a high of 69.3°F averaged over Big Horn County, MT, the coldest 29 September day in the county average since 2023, 37th coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
  • Tuesday 29 September 2026: a low of 41.8°F averaged over Big Horn County, MT, the warmest 29 September night in the county average since 2025, 23rd warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
Days of the month without a value
0

Nearby

Sheridan, WY 52.0 mi, the nearest city with its own station