Dillon city, Montana

Official LSAD Designation: Dillon city • Census GEOID: 3020800 • Beaverhead County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Dillon city.

Reference Weather Station: DILLON U OF MONTANA WESTERN, MT US (ID: USC00242409) • Located 0.7 miles from community center • Elevation: 1,563.3 m

Month	Average High (°F)	Average Low (°F)	Mean Temp (°F)	Precipitation (in)
January	33.3°	14.5°	23.9°	0.31"
February	36.7°	15.8°	26.3°	0.35"
March	45.9°	22.5°	34.2°	0.67"
April	54.3°	28.4°	41.3°	1.51"
May	64.4°	36.1°	50.3°	1.93"
June	72.8°	42.2°	57.5°	1.92"
July	82.9°	47.6°	65.2°	0.91"
August	80.9°	45.5°	63.2°	0.86"
September	70.8°	39.3°	55.1°	0.89"
October	56.4°	30.3°	43.3°	0.95"
November	41.3°	21.0°	31.1°	0.52"
December	31.6°	13.2°	22.4°	0.45"

2010–2025, completed calendar years only.

NOAA station DILLON U OF MONTANA WESTERN, MT US (ID: USC00242409) • 0.7 miles from community center .

This is the same reference station used for monthly normals.

Show annual mean of daily highs and lows

Annual mean Annual mean of daily highs Annual mean of daily lows

Annual temperature data table (°F)

Annual station temperatures, 2010–2025. Unavailable means no reported value.
Year	Annual mean (°F)	Annual mean of daily highs (°F)	Annual mean of daily lows (°F)
2010	43.2	56.3	30.1
2011	43.4	56.8	30.0
2012	46.1	60.5	31.8
2013	44.4	58.1	30.7
2014	43.6	57.0	30.3
2015	45.6	59.1	32.1
2016	44.5	57.8	31.3
2017	43.3	56.4	30.3
2018	43.1	56.3	30.0
2019	Unavailable	Unavailable	Unavailable
2020	44.1	57.5	30.6
2021	Unavailable	Unavailable	Unavailable
2022	Unavailable	Unavailable	Unavailable
2023	43.4	55.6	31.3
2024	46.0	58.6	33.4
2025	45.3	58.4	32.1

Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.